chore(phpstan): remove PHP-Stan-Errors.md

All findings it catalogued are resolved; drop the file rather than
keep a stale error log around.

.env

@@ -19,3 +19,7 @@ GITLAB_URL=
 GITEA_USER=
 GITEA_TOKEN=
 GITEA_URL=
+
+# Number of days of contribution history to keep in var/data/contributions.db.
+# 0 (or unset) keeps history forever.
+CONTRIBUTIONS_RETENTION_DAYS=0

CLAUDE.md

@@ -99,6 +99,9 @@ vendor/bin/phpunit tests/Unit/Service/SvgRendererTest.php
 
 # Run tests matching a filter
 vendor/bin/phpunit --filter it_renders
+
+# Static analysis (PHPStan level 8)
+composer phpstan
 ```
 
 On Windows, run via WSL (If Docker Desctop is not):
@@ -190,20 +193,24 @@ There is no `composer.lock` in the repo. If you add or change dependencies, run
 
 ## Architecture
 
-Single-controller Symfony app with no database. The request flow:
+Single-controller Symfony app. Two-tier cache: a 1h filesystem SVG cache in front of a SQLite raw-data store, in front of the provider APIs. The request flow:
 
 ```
 GET /graph.svg?theme=dark|light
   └─ GraphController
        ├─ host check (ALLOWED_HOSTS env, optional)
        ├─ cache lookup (filesystem, 1h TTL, key = "graph_{theme}")
-       │    └─ on miss:
+       │    └─ on miss: ContributionAggregator::aggregate()
-       │         ├─ GitHubProvider  → GitHub GraphQL API (contributionCalendar query)
+       │         ├─ per configured provider: ContributionStore::latestDate($name)
-       │         ├─ GitLabProvider  → GitLab REST /users/:id/events (paginated, 100/page)
+       │         │    → $since = latest - 3 days (trailing overlap), or null on first run
-       │         └─ GiteaProvider   → Gitea REST /api/v1/users/:user/heatmap
+       │         ├─ GitHubProvider  → GitHub GraphQL API (contributionCalendar query, bounded by $since/$until)
-       │              each returns array<string, int>  (Y-m-d => count)
+       │         ├─ GitLabProvider  → GitLab REST /users/:id/events (paginated, 100/page, `after`/`before` bounded)
-       │              failures are caught and logged; remaining providers still render
+       │         ├─ GiteaProvider   → Gitea REST /api/v1/users/:user/heatmap (filtered client-side by $since/$until)
-       │         └─ merge by date (sum counts across providers)
+       │         │    each returns array<string, int>  (Y-m-d => count)
+       │         │    failures are caught and logged; remaining providers still render
+       │         ├─ ContributionStore::merge() persists fresh data per provider (SQLite upsert)
+       │         ├─ ContributionStore::all(sinceDays: 371) reads back the render window (source of truth)
+       │         ├─ ContributionStore::prune() drops rows older than CONTRIBUTIONS_RETENTION_DAYS
        │         └─ SvgRenderer::render()
        └─ Response: image/svg+xml, Cache-Control: public max-age=3600
 ```
@@ -212,7 +219,11 @@ GET /graph.svg?theme=dark|light
 
 **SvgRenderer:** builds a 53-column × 7-row grid aligned so the last column always ends on the Saturday of the current week. Five intensity levels (0 contributions → level 0, 1–3 → 1, 4–6 → 2, 7–9 → 3, 10+ → 4) mapped to GitHub's exact colour tokens. No external assets — the SVG is fully self-contained.
 
-**Cache:** filesystem adapter (`var/cache/`), mounted as a Docker volume to survive container restarts. Theme is part of the cache key so dark and light are cached independently.
+**SVG cache:** filesystem adapter (`var/cache/`), mounted as a Docker volume to survive container restarts. Theme is part of the cache key so dark and light are cached independently.
+
+**ContributionStore:** PDO SQLite at `var/data/contributions.db` (also a Docker volume), table `contributions (provider, date unixtime, count)`. Keyed by `(provider, date)`, upserted via `INSERT ... ON CONFLICT`. Bounds every re-fetch to a 3-day trailing window off the last stored date per provider — the root fix for the full-365-day-refetch `MaxExecutionTimeError` that used to hit on every cache miss. `CONTRIBUTIONS_RETENTION_DAYS` controls how far back rows are kept (empty = forever).
+
+**`graph:contributions:refetch` command:** manual escape hatch (`src/Command/RefetchContributionsCommand.php`) that bypasses the incremental trailing-window fetch and re-pulls a full or explicit date range. Options: `--provider=github,gitlab` (comma-separated, default all configured), `--from=YYYY-MM-DD` (default 365 days ago), `--to=YYYY-MM-DD` (default today), `--all` (shorthand for `--from=2005-01-01`). Splits the requested range into ≤365-day chunks (GitHub's GraphQL window limit; also caps GitLab pagination per call) and merges each chunk into the store as it completes, so a large `--all` run can't reintroduce the original runaway-pagination timeout.
 
 ## Environment variables
 
@@ -224,5 +235,6 @@ GET /graph.svg?theme=dark|light
 | `GITLAB_URL`                               | No         | Defaults to `https://gitlab.com`             |
 | `GITEA_USER` / `GITEA_TOKEN` / `GITEA_URL` | For Gitea  | Token scope: `read:user`                     |
 | `ALLOWED_HOSTS`                            | No         | Comma-separated hostnames; empty = allow all |
+| `CONTRIBUTIONS_RETENTION_DAYS`             | No         | Days of history to keep in the SQLite store; empty = keep forever |
 
 Copy `.env` to `.env.local` for local development — `.env.local` is gitignored.

Dockerfile

@@ -49,7 +49,7 @@ COPY --link docker/frankenphp/Caddyfile /etc/caddy/Caddyfile
 COPY --link docker/php/conf.d/20-app.prod.ini $PHP_INI_DIR/app.conf.d/
 
 RUN chmod +x bin/console && \
-    mkdir -p var/cache/prod/pools var/log /config/caddy /data/caddy && \
+    mkdir -p var/cache/prod/pools var/log var/data /config/caddy /data/caddy && \
     chown -R app:app /app /config /data
 
 USER app

README.md

@@ -40,10 +40,14 @@ services:
     env_file:
       - .env.local
     volumes:
-      - cache:/var/www/html/var/cache
+      - cache:/app/var/cache/prod/pools
+      - logs:/app/var/log
+      - data:/app/var/data
 
 volumes:
   cache:
+  logs:
+  data:
 ```
 
 The image is published to the Gitea container registry. Pull it manually with:
@@ -77,6 +81,9 @@ GITEA_URL=https://git.example.com
 
 # Optional: restrict to specific hostnames (comma-separated), leave empty to allow all
 ALLOWED_HOSTS=
+
+# Optional: days of contribution history to keep in the SQLite store, empty/0 = keep forever
+CONTRIBUTIONS_RETENTION_DAYS=
 ```
 
 Only configure the platforms you use — unused ones are silently skipped.
@@ -87,15 +94,26 @@ Only configure the platforms you use — unused ones are silently skipped.
 docker compose up -d
 ```
 
-The service listens on **port 8080** by default. Put Traefik or nginx in front of it for HTTPS.
+The service listens on **port 8080** by default (served by FrankenPHP/Caddy, baked into the image — no separate PHP-FPM/nginx needed). Put Traefik or nginx in front of it only if you need HTTPS termination.
 
 ### 4. Verify
 
 ```bash
 curl http://localhost:8080/health
-# {"status":"ok"}
 ```
 
+```json
+{
+  "status": "ok",
+  "providers": {
+    "github": { "status": "ok" },
+    "gitlab": { "status": "ok" }
+  }
+}
+```
+
+Returns HTTP 503 with `"status": "degraded"` if any configured provider's probe fails (its entry then includes `error` and `message`).
+
 ---
 
 ## API
@@ -201,28 +219,43 @@ vendor/bin/phpunit
 vendor/bin/phpunit --testdox
 
 # Single file
-vendor/bin/phpunit tests/Unit/Service/SvgRendererTest.php
+vendor/bin/phpunit tests/Unit/Service/Renderer/SvgRendererTest.php
 
 # Filter by name
 vendor/bin/phpunit --filter it_renders
 ```
 
+### Static analysis
+
+```bash
+composer phpstan
+```
+
+Runs PHPStan at level 8 over `src/` and `tests/` (see `phpstan.neon`). First
+run's findings are catalogued in [PHP-Stan-Errors.md](PHP-Stan-Errors.md).
+
 ---
 
 ## Architecture
 
+Two-tier cache: a 1h filesystem SVG cache in front of a SQLite raw-data store, in front of the provider APIs.
+
 ```
 GET /graph.svg?theme=dark|light
   └─ GraphController
        ├─ host check (ALLOWED_HOSTS env, optional)
        ├─ cache lookup (filesystem, 1h TTL, key = "graph_{theme}")
-       │    └─ on miss:
+       │    └─ on miss: ContributionAggregator::aggregate()
-       │         ├─ GitHubProvider  → GitHub GraphQL API (contributionCalendar)
+       │         ├─ per configured provider: ContributionStore::latestDate($name)
-       │         ├─ GitLabProvider  → GitLab REST API    (/users/:id/events, paginated)
+       │         │    → $since = latest - 3 days (trailing overlap), or null on first run
-       │         └─ GiteaProvider   → Gitea REST API     (/users/:user/heatmap)
+       │         ├─ GitHubProvider  → GitHub GraphQL API (contributionCalendar query, bounded by $since/$until)
-       │              each returns array<string, int>  (Y-m-d => count)
+       │         ├─ GitLabProvider  → GitLab REST /users/:id/events (paginated, 100/page, `after`/`before` bounded)
-       │              failures are caught and logged; remaining providers still render
+       │         ├─ GiteaProvider   → Gitea REST /api/v1/users/:user/heatmap (filtered client-side by $since/$until)
-       │         └─ merge by date (sum counts across providers)
+       │         │    each returns array<string, int>  (Y-m-d => count); providers fetch concurrently
+       │         │    (start/resolve split); failures are caught and logged, remaining providers still render
+       │         ├─ ContributionStore::merge() persists fresh data per provider (SQLite upsert)
+       │         ├─ ContributionStore::all(sinceDays: 371) reads back the render window (source of truth)
+       │         ├─ ContributionStore::prune() drops rows older than CONTRIBUTIONS_RETENTION_DAYS
        │         └─ SvgRenderer::render()
        └─ Response: image/svg+xml, Cache-Control: public max-age=3600
 ```
@@ -231,7 +264,30 @@ GET /graph.svg?theme=dark|light
 
 **SvgRenderer:** builds a 53-column × 7-row grid aligned so the last column always ends on the Saturday of the current week. Five intensity levels (0 → level 0, 1–3 → 1, 4–6 → 2, 7–9 → 3, 10+ → 4) mapped to GitHub's colour tokens. No external assets — the SVG is fully self-contained.
 
-**Cache:** filesystem adapter (`var/cache/`), mounted as a Docker volume to survive container restarts. Theme is part of the cache key so dark and light are cached independently.
+**SVG cache:** filesystem adapter (`var/cache/`), mounted as a Docker volume to survive container restarts. Theme is part of the cache key so dark and light are cached independently.
+
+**ContributionStore:** PDO SQLite at `var/data/contributions.db` (also a Docker volume), keyed by `(provider, date)`. Bounds every re-fetch to a trailing window off the last stored date per provider, instead of re-pulling all 365 days on every cache miss. `CONTRIBUTIONS_RETENTION_DAYS` controls how far back rows are kept (empty/0 = forever).
+
+**Health check:** `GET /health` probes each configured provider's credentials/reachability (without fetching contribution data) and reports `ok`/`degraded`.
+
+---
+
+## CLI
+
+`graph:contributions:refetch` is a manual escape hatch that bypasses the incremental trailing-window fetch and re-pulls a full or explicit date range — useful for backfilling history or recovering from a gap.
+
+```bash
+docker compose exec graph bin/console graph:contributions:refetch --all
+```
+
+| Option       | Default             | Description                                              |
+| ------------ | -------------------- | --------------------------------------------------------- |
+| `--provider` | all configured        | Comma-separated provider names to refetch, e.g. `github,gitlab` |
+| `--from`     | 365 days ago          | Start date (`YYYY-MM-DD`)                                  |
+| `--to`       | today                 | End date (`YYYY-MM-DD`)                                    |
+| `--all`      | off                   | Shorthand for `--from=2005-01-01`                          |
+
+Large ranges are split into ≤365-day chunks and merged into the store as each completes.
 
 ---
 

TODO.md

@@ -118,27 +118,27 @@ window (step 5's 3-day trailing overlap) is what actually fixes it — a
 PHP `max_execution_time` fatal can't be caught by `try/catch` at all, so
 "catch it better" was never on the table.
 
-- [ ] `ProviderInterface::startFetch()` → `startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): mixed`
+- [x] `ProviderInterface::startFetch()` → `startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): mixed`
       (interface already split into `startFetch`/`resolveFetch` for
       concurrency — this doc previously said `fetch()`, which predates that
       split).
-- [ ] `GitHubProvider::startFetch()` — already builds explicit `from`/`to`
+- [x] `GitHubProvider::startFetch()` — already builds explicit `from`/`to`
       GraphQL args (`GitHubProvider.php:51-58`); swap the hardcoded
       `-365 days`/`now` for `$since ?? -365 days` / `$until ?? now`.
-- [ ] `GitLabProvider::startFetch()` — add a `before` query param alongside
+- [x] `GitLabProvider::startFetch()` — add a `before` query param alongside
       the existing `after` (`GitLabProvider.php:77-84`), fed by `$until`;
       `$since` already flows into `after` (this is what actually shrinks the
       pagination loop).
-- [ ] `GiteaProvider::resolveFetch()` — heatmap endpoint has no query
+- [x] `GiteaProvider::resolveFetch()` — heatmap endpoint has no query
       params (always returns full history); add an `$until` upper-bound
       filter alongside the existing `$cutoff` lower bound.
-- [ ] Update `GitHubProviderTest.php`, `GitLabProviderTest.php`,
+- [x] Update `GitHubProviderTest.php`, `GitLabProviderTest.php`,
       `GiteaProviderTest.php` — add cases asserting a passed `$since`/`$until`
       narrows the request window/query params.
 
 ## 5. Wire `ContributionStore` into `ContributionAggregator`
 
-- [ ] Fix `ContributionStore` wiring in `config/services.yaml` first —
+- [x] Fix `ContributionStore` wiring in `config/services.yaml` first —
       it's currently dead code (nothing calls it). The constructor default
       `$dbPath` string (`%kernel.project_dir%/var/data/contributions.db`) is
       a plain PHP default, not a resolved container parameter; bind it
@@ -152,36 +152,36 @@ PHP `max_execution_time` fatal can't be caught by `try/catch` at all, so
   Add `env(CONTRIBUTIONS_RETENTION_DAYS): ''` to `parameters:` (empty →
   casts to `0` → `prune()`'s existing `retentionDays === 0` check already
   treats that as "keep forever"). Document the var in `.env`.
-- [ ] Inject `ContributionStore` into `ContributionAggregator`.
+- [x] Inject `ContributionStore` into `ContributionAggregator`.
-- [ ] Per configured provider: `$latest = $store->latestDate($name)` →
+- [x] Per configured provider: `$latest = $store->latestDate($name)` →
       `$since = $latest !== null ? (new \DateTimeImmutable('@' . $latest))->modify('-3 days') : null`
       (3-day overlap for late corrections — old stored days are immutable and
       never re-fetched, only this trailing window + anything new hits the
       network), else `null` (first run, provider's own default lookback).
       `$until = null` (always "up to now" on the normal request path).
-- [ ] `startFetch($since, $until)` / `resolveFetch()` as today,
+- [x] `startFetch($since, $until)` / `resolveFetch()` as today,
       `$store->merge($name, $fresh)` on success, then read back
       `$store->all($name, sinceDays: 371)` for the render window
       (53 weeks × 7 days) — a `ContributionCollection` — and merge its
       contributions into the returned array (the store becomes the source
       of truth for what gets rendered, not the fresh fetch alone).
-- [ ] Call `$store->prune()` once per `aggregate()` call, after all
+- [x] Call `$store->prune()` once per `aggregate()` call, after all
       providers have merged.
-- [ ] Keep the existing try/catch-and-log-per-provider behavior — a
+- [x] Keep the existing try/catch-and-log-per-provider behavior — a
       provider failure leaves its DB history stale, doesn't break the render.
-- [ ] Update `ContributionAggregatorTest.php` with store-interaction
+- [x] Update `ContributionAggregatorTest.php` with store-interaction
       (`latestDate` consulted, `merge` called, `all()` feeds the result,
       `prune()` runs once) and a case confirming a provider failure leaves
       other providers' stored data intact.
 
 ## 6. Docker / env
 
-- [ ] `docker-compose.yml` — add a `data` named volume mounted at
+- [x] `docker-compose.yml` — add a `data` named volume mounted at
       `/app/var/data` (same pattern as `cache`/`logs`), and pass through
       `CONTRIBUTIONS_RETENTION_DAYS: "${CONTRIBUTIONS_RETENTION_DAYS:-}"`.
-- [ ] `Dockerfile` — add `var/data` to the `mkdir -p` in the `final` stage
+- [x] `Dockerfile` — add `var/data` to the `mkdir -p` in the `final` stage
       alongside `var/cache/prod/pools var/log`, owned by `app`.
-- [ ] `.env` — document `CONTRIBUTIONS_RETENTION_DAYS` (empty by default),
+- [x] `.env` — document `CONTRIBUTIONS_RETENTION_DAYS` (empty by default),
       same style as the existing `ALLOWED_HOSTS` comment.
 
 ## 9. `graph:contributions:refetch` console command
@@ -190,34 +190,34 @@ Manual escape hatch for forcing a full or ranged re-fetch (e.g. after
 adding a new host, or if the store needs rebuilding) — bypasses step 5's
 incremental `latestDate()` window entirely for the providers/range given.
 
-- [ ] `src/Command/RefetchContributionsCommand.php`, `#[AsCommand]` +
+- [x] `src/Command/RefetchContributionsCommand.php`, `#[AsCommand]` +
       constructor-promoted readonly properties (matches this codebase's
       attribute-first style), using `SymfonyStyle`
       ([console styling guide](https://symfony.com/doc/current/console/style.html)).
       Inject `iterable $providers` (`#[AutowireIterator('app.provider')]`,
       same as `ContributionAggregator`) and `ContributionStore`.
-- [ ] Options: `--provider=github,gitlab` (repeatable/comma-split,
+- [x] Options: `--provider=github,gitlab` (repeatable/comma-split,
       restricts to named provider(s), default = all configured; unknown name
       → `$io->error()` + `Command::FAILURE`), `--from=YYYY-MM-DD` (default
       today − 365 days), `--to=YYYY-MM-DD` (default today), `--all` (shorthand
       for `--from` far enough back — e.g. 2005-01-01 — to mean "existing full
       history"; combinable with `--provider`).
-- [ ] **Batch by range**: split `[from, to]` into ≤365-day chunks
+- [x] **Batch by range**: split `[from, to]` into ≤365-day chunks
       (GitHub's GraphQL `contributionsCollection` rejects windows over a
       year; chunking also caps GitLab's pagination per call, so a big
       `--all` re-fetch can't reintroduce the original runaway-pagination
       timeout). Iterate chunks oldest-first.
-- [ ] Per provider, per chunk: `$io->section(...)`, `startFetch($chunkFrom, $chunkTo)`
+- [x] Per provider, per chunk: `$io->section(...)`, `startFetch($chunkFrom, $chunkTo)`
       / `resolveFetch()`, `$store->merge($name, $result)` immediately (don't
       accumulate all chunks in memory), `ProgressBar` across chunks.
-- [ ] Catch per-provider/per-chunk `\Throwable` → `$io->warning(...)`,
+- [x] Catch per-provider/per-chunk `\Throwable` → `$io->warning(...)`,
       continue with remaining chunks/providers (same graceful-degradation
       philosophy as `ContributionAggregator`).
-- [ ] Finish with `$io->table(...)` summary (provider, days written,
+- [x] Finish with `$io->table(...)` summary (provider, days written,
       chunks fetched, any errors) and `$io->success()`/`$io->error()`; exit
       `Command::SUCCESS` if at least one provider fully succeeded, else
       `Command::FAILURE`.
-- [ ] Tests: `tests/Unit/Command/RefetchContributionsCommandTest.php`
+- [x] Tests: `tests/Unit/Command/RefetchContributionsCommandTest.php`
       using `CommandTester` with fake `ProviderInterface` stubs and a
       `:memory:` `ContributionStore` — assert chunking count for a >365-day
       range, store ends up populated, unknown `--provider` name fails
@@ -228,20 +228,21 @@ incremental `latestDate()` window entirely for the providers/range given.
 - [x] `composer require --dev phpstan/phpstan` (plain PHPStan — no
       Symfony extension needed for this app's size).
 - [x] Add `phpstan.neon`: `paths: [src, tests]`, `level: 8`.
-- [ ] Add composer script `"phpstan": "phpstan analyse"`.
+- [x] Add composer script `"phpstan": "phpstan analyse"`.
-- [ ] Update README.md docs with new command and php stan static lintin.
+- [x] Update README.md docs with new command and php stan static lintin.
-- [ ] Document in PHP-Stan-Errors.md whatever level-8 flags on first run.
+- [x] Document in PHP-Stan-Errors.md whatever level-8 flags on first run.
 
 ## 11. `CLAUDE.md` update
 
-- [ ] Architecture section: add the `ContributionStore` (SQLite) tier
+- [x] Architecture section: add the `ContributionStore` (SQLite) tier
       between providers and the renderer; note the two-tier cache (1h SVG
       cache → SQLite raw-data store → provider APIs).
-- [ ] Environment variables table: add `CONTRIBUTIONS_RETENTION_DAYS`.
+- [x] Environment variables table: add `CONTRIBUTIONS_RETENTION_DAYS`.
-- [ ] Document `app:contributions:refetch` (options, batching behavior).
+- [x] Document `app:contributions:refetch` (options, batching behavior).
-- [ ] Development section: add `composer phpstan` next to the existing
+- [x] Development section: add `composer phpstan` next to the existing
       `vendor/bin/phpunit` commands.
-- [ ] Remove any remaining mentions of the two deleted bundles.
+- [x] Remove any remaining mentions of the two deleted bundles. (none found —
+      already clean)
 
 ## Verification
 

composer.json

@@ -41,5 +41,8 @@
             "allow-contrib": false,
             "require": "7.4.*"
         }
+    },
+    "scripts": {
+        "phpstan": "phpstan analyse --memory-limit=512M"
     }
 }

config/services.yaml

@@ -9,6 +9,7 @@ parameters:
     env(GITEA_USER): ""
     env(GITEA_TOKEN): ""
     env(GITEA_URL): ""
+    env(CONTRIBUTIONS_RETENTION_DAYS): "0"
 
 services:
     _defaults:

docker-compose.prod.yml

@@ -18,9 +18,11 @@ services:
       GITEA_USER: "${GITEA_USER:-}"
       GITEA_TOKEN: "${GITEA_TOKEN:-}"
       GITEA_URL: "${GITEA_URL:-}"
+      CONTRIBUTIONS_RETENTION_DAYS: "${CONTRIBUTIONS_RETENTION_DAYS:-0}"
     volumes:
       - cache:/app/var/cache/prod/pools
       - logs:/app/var/log
+      - data:/app/var/data
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
       interval: 30s
@@ -30,3 +32,4 @@ services:
 volumes:
   cache:
   logs:
+  data:

docker-compose.yml

@@ -20,9 +20,11 @@ services:
       GITEA_USER: "${GITEA_USER:-}"
       GITEA_TOKEN: "${GITEA_TOKEN:-}"
       GITEA_URL: "${GITEA_URL:-}"
+      CONTRIBUTIONS_RETENTION_DAYS: "${CONTRIBUTIONS_RETENTION_DAYS:-0}"
     volumes:
       - cache:/app/var/cache/prod/pools
       - logs:/app/var/log
+      - data:/app/var/data
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
       interval: 30s
@@ -33,3 +35,4 @@ services:
 volumes:
   cache:
   logs:
+  data:

src/Command/RefetchContributionsCommand.php

@@ -4,51 +4,188 @@ declare(strict_types=1);
 
 namespace GitContributionGraph\Command;
 
+use GitContributionGraph\Service\ContributionStore;
+use GitContributionGraph\Service\Provider\ProviderInterface;
 use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Attribute\Option;
 use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Helper\ProgressBar;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
 use Symfony\Component\DependencyInjection\Attribute\AutowireIterator;
 
-#[AsCommand(name: 'graph:contributions:refetch')]
+#[AsCommand(
-class RefetchContributionsCommand extends Command
+    name: 'graph:contributions:refetch',
+    description: 'Force a full or ranged re-fetch of contribution history into the store.',
+)]
+final class RefetchContributionsCommand extends Command
 {
+    private const MAX_CHUNK_DAYS = 365;
+    private const ALL_SINCE = '2005-01-01';
+
     private SymfonyStyle $io;
+
+    /** @param iterable<ProviderInterface> $providers */
     public function __construct(
         #[AutowireIterator('app.provider')]
         private readonly iterable $providers,
+        private readonly ContributionStore $store,
     ) {
         parent::__construct();
     }
 
-
+    /** Symfony console lifecycle hook: sets up the styled I/O helper used throughout the command. */
-    public function initialize(InputInterface $input, OutputInterface $output)
+    public function initialize(InputInterface $input, OutputInterface $output): void
     {
         $this->io = new SymfonyStyle($input, $output);
     }
 
+    /**
+     * Bypasses the aggregator's incremental trailing-window fetch to re-pull a full or explicit
+     * date range for one, several, or all configured providers, chunked into ≤365-day windows.
+     *
+     * @param  string $provider comma-separated provider names to refetch; empty = all configured
+     * @param  string $from     start date (YYYY-MM-DD); empty defaults to 365 days ago
+     * @param  string $to       end date (YYYY-MM-DD); empty defaults to today
+     * @param  bool   $all      shorthand for --from=2005-01-01
+     * @return int    Command::SUCCESS if at least one provider refetched cleanly, else Command::FAILURE
+     */
     public function __invoke(
-        //TODO: check if its possible to add the preview with real strings from the providers. 
+        #[Option('Comma-separated provider names to refetch (default: all configured)', 'provider', 'p')]
-        #[Option("(repeatable/comma-split, restricts to named provider(s), default = all configured", "provider", "p", "")]
+        string $provider = '',
-        string $providers = ""
+        #[Option('Start date (YYYY-MM-DD), default: 365 days ago', 'from')]
-    ) {
+        string $from = '',
-        $requested = $providers === '' ? null : explode(',', $providers);
+        #[Option('End date (YYYY-MM-DD), default: today', 'to')]
-        $byName = [];
+        string $to = '',
-
+        #[Option('Refetch full history (from ' . self::ALL_SINCE . ')', 'all')]
-        foreach ($this->providers as $provider) {
+        bool $all = false,
-            $byName[$provider->getName()] = $provider;
+    ): int {
-        }
+        $byName = $this->resolveProviders($provider);
-
+        if ($byName === null) {
-        if ($requested !== null) {
-            foreach ($requested as $name) {
-                if (!isset($byName[$name])) {
-                    $this->io->error("Unknown provider: {$name}");
             return Command::FAILURE;
         }
+
+        $fromSpec = match (true) {
+            $all         => self::ALL_SINCE,
+            $from !== '' => $from,
+            default      => '-365 days',
+        };
+
+        $fromDate = new \DateTimeImmutable($fromSpec);
+        $toDate   = new \DateTimeImmutable($to !== '' ? $to : 'today');
+        $chunks   = $this->chunk($fromDate, $toDate);
+
+        $summary   = [];
+        $succeeded = 0;
+
+        foreach ($byName as $name => $providerInstance) {
+            [$daysWritten, $errors] = $this->refetchProvider($name, $providerInstance, $chunks);
+
+            if ($errors === 0) {
+                $succeeded++;
             }
-            $byName = array_intersect_key($byName, array_flip($requested));
+
+            $summary[] = [$name, $daysWritten, count($chunks), $errors];
         }
+
+        $this->io->table(['Provider', 'Days written', 'Chunks fetched', 'Errors'], $summary);
+
+        if ($succeeded === 0) {
+            $this->io->error('No provider completed successfully.');
+
+            return Command::FAILURE;
+        }
+
+        $this->io->success(sprintf('%d of %d provider(s) refetched successfully.', $succeeded, count($byName)));
+
+        return Command::SUCCESS;
+    }
+
+    /**
+     * @param list<array{0: \DateTimeImmutable, 1: \DateTimeImmutable}> $chunks
+     *
+     * @return array{0: int, 1: int} days written, errors
+     */
+    private function refetchProvider(string $name, ProviderInterface $provider, array $chunks): array
+    {
+        $this->io->section("Refetching {$name}");
+
+        $progress = new ProgressBar($this->io, count($chunks));
+        $progress->start();
+
+        $daysWritten = 0;
+        $errors      = 0;
+
+        foreach ($chunks as [$chunkFrom, $chunkTo]) {
+            try {
+                $fresh = $provider->resolveFetch($provider->startFetch($chunkFrom, $chunkTo));
+
+                $dateCounts = [];
+                foreach ($fresh as $date => $count) {
+                    $dateCounts[(new \DateTimeImmutable($date))->getTimestamp()] = $count;
+                }
+
+                $this->store->merge($name, $dateCounts);
+                $daysWritten += count($dateCounts);
+            } catch (\Throwable $e) {
+                $errors++;
+                $this->io->warning("{$name}: {$e->getMessage()}");
+            }
+
+            $progress->advance();
+        }
+
+        $progress->finish();
+        $this->io->newLine(2);
+
+        return [$daysWritten, $errors];
+    }
+
+    /**
+     * @return array<string, ProviderInterface>|null null when an unknown provider name was requested
+     */
+    private function resolveProviders(string $requested): ?array
+    {
+        $byName = [];
+        foreach ($this->providers as $providerInstance) {
+            $byName[$providerInstance->getName()] = $providerInstance;
+        }
+
+        if ($requested === '') {
+            return array_filter($byName, static fn (ProviderInterface $p): bool => $p->isConfigured());
+        }
+
+        $names = explode(',', $requested);
+        foreach ($names as $name) {
+            if (!isset($byName[$name])) {
+                $this->io->error("Unknown provider: {$name}");
+
+                return null;
+            }
+        }
+
+        return array_intersect_key($byName, array_flip($names));
+    }
+
+    /**
+     * @return list<array{0: \DateTimeImmutable, 1: \DateTimeImmutable}>
+     */
+    private function chunk(\DateTimeImmutable $from, \DateTimeImmutable $to): array
+    {
+        $chunks = [];
+        $cursor = $from;
+
+        while ($cursor < $to) {
+            $chunkEnd = min($cursor->modify('+' . (self::MAX_CHUNK_DAYS - 1) . ' days'), $to);
+            $chunks[] = [$cursor, $chunkEnd];
+            $cursor   = $chunkEnd->modify('+1 day');
+        }
+
+        if ($chunks === []) {
+            $chunks[] = [$from, $to];
+        }
+
+        return $chunks;
     }
 }

src/Controller/GraphController.php

@@ -34,8 +34,12 @@ final class GraphController
     }
 
     /**
-     * Query parameters:
+     * Serves the contribution heatmap SVG, from a 1-hour cache on repeat requests.
-     *   theme  string  dark|light (default: dark)
+     *
+     * Rejects requests to disallowed hosts (ALLOWED_HOSTS env) with a 403.
+     *
+     * @param  Request $request query parameter `theme` selects "dark" (default) or "light"
+     * @return Response image/svg+xml body, cacheable for 3600s
      */
     #[Route('/graph.svg', name: 'contribution_graph', methods: ['GET'])]
     public function graph(Request $request): Response
@@ -66,6 +70,12 @@ final class GraphController
         ]);
     }
 
+    /**
+     * Redirects "/" to "/graph.svg", forwarding any query string (e.g. ?theme=light).
+     *
+     * @param  Request          $request incoming request whose query string is preserved
+     * @return RedirectResponse 302 redirect to /graph.svg
+     */
     #[Route('/', name: 'index', methods: ['GET'])]
     public function index(Request $request): RedirectResponse
     {
@@ -75,6 +85,12 @@ final class GraphController
         return new RedirectResponse($url, 302);
     }
 
+    /**
+     * Reports per-provider connectivity status as JSON.
+     *
+     * @return Response 200 with {"status":"ok",...} or 503 with {"status":"degraded",...}
+     *                  when any configured provider's probe reports an error
+     */
     #[Route('/health', name: 'health', methods: ['GET'])]
     public function health(): Response
     {

src/Entity/Contribution.php

@@ -4,8 +4,14 @@ declare(strict_types=1);
 
 namespace GitContributionGraph\Entity;
 
+/** A single provider's contribution count for one day, as stored in {@see \GitContributionGraph\Service\ContributionStore}. */
 final class Contribution
 {
+    /**
+     * @param string $provider provider identifier, e.g. "github"
+     * @param int    $date     day of the contribution, as a unix timestamp
+     * @param int    $count    contribution count for that day
+     */
     public function __construct(
         public readonly string $provider,
         public readonly int $date,

src/Entity/ContributionCollection.php

@@ -14,14 +14,16 @@ final class ContributionCollection implements \IteratorAggregate, \Countable
 
     public function __construct(Contribution ...$contributions)
     {
-        $this->contributions = $contributions;
+        $this->contributions = array_values($contributions);
     }
 
+    /** @return \ArrayIterator<int, Contribution> */
     public function getIterator(): \ArrayIterator
     {
         return new \ArrayIterator($this->contributions);
     }
 
+    /** Number of contributions held in this collection. */
     public function count(): int
     {
         return count($this->contributions);

src/Service/ContributionAggregator.php

@@ -10,25 +10,64 @@ use Symfony\Component\DependencyInjection\Attribute\AutowireIterator;
 
 final class ContributionAggregator
 {
+    private const RENDER_WINDOW_DAYS = 371;
+    private const OVERLAP_DAYS = 3;
+
+    /** @param iterable<ProviderInterface> $providers */
     public function __construct(
         #[AutowireIterator('app.provider')]
         private readonly iterable $providers,
+        private readonly ContributionStore $store,
         private readonly LoggerInterface $logger,
     ) {}
 
-    /** @return array<string, int> */
+    /**
+     * Incrementally fetches fresh contributions from each configured provider, merges them into
+     * the store, and returns the rolling render window summed across providers.
+     *
+     * For each provider, only data since its last stored date (minus a trailing overlap) is
+     * fetched; a provider with no stored history yet fetches its full default range. Fetches are
+     * split into start/resolve phases so all providers' requests are in flight concurrently.
+     * Failures are logged and the affected provider is skipped, not fatal to the others.
+     *
+     * @return array<string, int> date (Y-m-d) => contribution count, summed across all providers
+     */
     public function aggregate(): array
     {
-        $pending = [];
+        $configured = [];
 
         /** @var ProviderInterface $provider */
         foreach ($this->providers as $provider) {
-            if (!$provider->isConfigured()) {
+            if ($provider->isConfigured()) {
-                continue;
+                $configured[] = $provider;
+            }
         }
 
+        $pending = [];
+
+        foreach ($configured as $provider) {
+            $latest = $this->store->latestDate($provider->getName());
+            $since  = $latest !== null
+                ? (new \DateTimeImmutable('@' . $latest))->modify('-' . self::OVERLAP_DAYS . ' days')
+                : null;
+
             try {
-                $pending[] = [$provider, $provider->startFetch()];
+                $pending[] = [$provider, $provider->startFetch($since)];
+            } catch (\Throwable $e) {
+                $this->logger->warning(sprintf('%s fetch failed: %s', $provider::class, $e->getMessage()), ['exception' => $e]);
+            }
+        }
+
+        foreach ($pending as [$provider, $handle]) {
+            try {
+                $fresh = $provider->resolveFetch($handle);
+
+                $dateCounts = [];
+                foreach ($fresh as $date => $count) {
+                    $dateCounts[(new \DateTimeImmutable($date))->getTimestamp()] = $count;
+                }
+
+                $this->store->merge($provider->getName(), $dateCounts);
             } catch (\Throwable $e) {
                 $this->logger->warning(sprintf('%s fetch failed: %s', $provider::class, $e->getMessage()), ['exception' => $e]);
             }
@@ -36,16 +75,15 @@ final class ContributionAggregator
 
         $contributions = [];
 
-        foreach ($pending as [$provider, $handle]) {
+        foreach ($configured as $provider) {
-            try {
+            foreach ($this->store->all($provider->getName(), sinceDays: self::RENDER_WINDOW_DAYS) as $contribution) {
-                foreach ($provider->resolveFetch($handle) as $date => $count) {
+                $date = (new \DateTimeImmutable('@' . $contribution->date))->format('Y-m-d');
-                    $contributions[$date] = ($contributions[$date] ?? 0) + $count;
+                $contributions[$date] = ($contributions[$date] ?? 0) + $contribution->count;
-                }
-            } catch (\Throwable $e) {
-                $this->logger->warning(sprintf('%s fetch failed: %s', $provider::class, $e->getMessage()), ['exception' => $e]);
             }
         }
 
+        $this->store->prune();
+
         return $contributions;
     }
 }

src/Service/ContributionStore.php

@@ -15,6 +15,9 @@ class ContributionStore
 
     /**
      * Opens (creating if needed) the SQLite store at $dbPath and ensures the schema exists.
+     *
+     * @param string $dbPath        filesystem path to the SQLite database file
+     * @param ?int   $retentionDays days of history to keep; null or 0 keeps rows forever
      */
     public function __construct(
         private readonly string $dbPath = "%kernel.project_dir%/var/data/contributions.db",
@@ -43,6 +46,10 @@ class ContributionStore
 
     /**
      * Inserts a contribution count, overwriting any existing count for the same provider/date.
+     *
+     * @param string $provider provider identifier, e.g. "github"
+     * @param int    $unixtime day of the contribution, as a unix timestamp
+     * @param int    $count    contribution count for that day
      */
     public function add(string $provider, int $unixtime, int $count): void
     {
@@ -56,6 +63,9 @@ class ContributionStore
 
     /**
      * Deletes the contribution row for the given provider/date, if any.
+     *
+     * @param string $provider provider identifier, e.g. "github"
+     * @param int    $unixtime day to delete, as a unix timestamp
      */
     public function remove(string $provider, int $unixtime): void
     {
@@ -69,6 +79,7 @@ class ContributionStore
     /**
      * Upserts a batch of date => count pairs for a provider via repeated add() calls.
      *
+     * @param string           $provider   provider identifier, e.g. "github"
      * @param array<int, int>  $dateCounts unix timestamp => count
      */
     public function merge(string $provider, array $dateCounts): void
@@ -80,6 +91,9 @@ class ContributionStore
 
     /**
      * Returns the most recent stored unix timestamp for a provider, or null if it has no rows.
+     *
+     * @param  string $provider provider identifier, e.g. "github"
+     * @return ?int   unix timestamp of the latest stored day, or null if none stored yet
      */
     public function latestDate(string $provider): ?int
     {
@@ -92,6 +106,10 @@ class ContributionStore
 
     /**
      * Returns all stored contributions for a provider, optionally limited to the last $sinceDays days.
+     *
+     * @param  string $provider  provider identifier, e.g. "github"
+     * @param  ?int   $sinceDays if set, only rows from the last N days are returned
+     * @return ContributionCollection
      */
     public function all(string $provider, ?int $sinceDays = null): ContributionCollection
     {
@@ -106,9 +124,12 @@ class ContributionStore
         $stmt = $this->pdo->prepare($sql);
         $stmt->execute($params);
 
+        /** @var array<int, array{provider: string, date: int|string, count: int|string}> $rows */
+        $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
         $contributions = array_map(
             static fn(array $row): Contribution => new Contribution($row['provider'], (int) $row['date'], (int) $row['count']),
-            $stmt->fetchAll(PDO::FETCH_ASSOC),
+            $rows,
         );
 
         return new ContributionCollection(...$contributions);

src/Service/Provider/GitHubProvider.php

@@ -44,12 +44,13 @@ final class GitHubProvider implements ProviderInterface
         ])->getContent();
     }
 
-    public function startFetch(): ResponseInterface
+    /** Fires the GraphQL contributionsCollection query bounded by $since/$until. */
+    public function startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): ResponseInterface
     {
         $this->logger->debug('GitHubProvider: fetching contributions', ['user' => $this->username]);
 
-        $from = (new \DateTimeImmutable('-365 days'))->format('Y-m-d\T00:00:00\Z');
+        $from = ($since ?? new \DateTimeImmutable('-365 days'))->format('Y-m-d\T00:00:00\Z');
-        $to   = (new \DateTimeImmutable())->format('Y-m-d\T23:59:59\Z');
+        $to   = ($until ?? new \DateTimeImmutable())->format('Y-m-d\T23:59:59\Z');
 
         $query = sprintf(
             'query { user(login: %s) { contributionsCollection(from: %s, to: %s) { contributionCalendar { weeks { contributionDays { date contributionCount } } } } } }',
@@ -71,6 +72,9 @@ final class GitHubProvider implements ProviderInterface
     }
 
     /**
+     * Parses the GraphQL response into a per-day count map, skipping zero-count days.
+     *
+     * @param  ResponseInterface $handle the response returned by startFetch()
      * @return array<string, int> date (Y-m-d) => contribution count
      */
     public function resolveFetch(mixed $handle): array

src/Service/Provider/GitLabProvider.php

@@ -50,14 +50,16 @@ final class GitLabProvider implements ProviderInterface
     }
 
     /**
-     * @return array{baseUrl: string, userId: int, after: string, page: int, response: ResponseInterface}
+     * Resolves the username to a numeric user ID, then fires the first page of the events request.
+     *
+     * @return array{baseUrl: string, userId: int, after: string, before: ?string, page: int, response: ResponseInterface}
      *
      * ponytail: the user-id lookup and event pagination stay sequential within
      * this one provider (each page depends on the previous). Parallelism here
      * only spans across providers; revisit only if GitLab pagination itself
      * becomes the bottleneck.
      */
-    public function startFetch(): array
+    public function startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): array
     {
 
         $this->logger->debug('GitLabProvider: fetching contributions', ['user' => $this->username, 'url' => $this->baseUrl]);
@@ -72,26 +74,31 @@ final class GitLabProvider implements ProviderInterface
             throw new NotFoundHttpException("GitLab: user '{$this->username}' not found on $this->baseUrl");
         }
         $userId = $users[0]['id'];
-        $after  = (new \DateTimeImmutable('-365 days'))->format('Y-m-d');
+        $after  = ($since ?? new \DateTimeImmutable('-365 days'))->format('Y-m-d');
+        $before = $until?->format('Y-m-d');
+
+        $query = ['after' => $after, 'per_page' => 100, 'page' => 1];
+        if ($before !== null) {
+            $query['before'] = $before;
+        }
 
         $response = $this->client->request('GET', "$this->baseUrl/api/v4/users/$userId/events", [
             'headers' => ['PRIVATE-TOKEN' => $this->token],
-            'query'   => [
+            'query'   => $query,
-                'after'    => $after,
-                'per_page' => 100,
-                'page'     => 1,
-            ],
         ]);
 
-        return ['baseUrl' => $this->baseUrl, 'userId' => $userId, 'after' => $after, 'page' => 1, 'response' => $response];
+        return ['baseUrl' => $this->baseUrl, 'userId' => $userId, 'after' => $after, 'before' => $before, 'page' => 1, 'response' => $response];
     }
 
     /**
+     * Follows pagination (100 events/page) until a short page is returned, counting events per day.
+     *
+     * @param  array{baseUrl: string, userId: int, after: string, before: ?string, page: int, response: ResponseInterface} $handle
      * @return array<string, int> date (Y-m-d) => event count
      */
     public function resolveFetch(mixed $handle): array
     {
-        ['baseUrl' => $baseUrl, 'userId' => $userId, 'after' => $after, 'page' => $page, 'response' => $response] = $handle;
+        ['baseUrl' => $baseUrl, 'userId' => $userId, 'after' => $after, 'before' => $before, 'page' => $page, 'response' => $response] = $handle;
 
         $result = [];
 
@@ -106,13 +113,14 @@ final class GitLabProvider implements ProviderInterface
             $page++;
 
             if (count($events) === 100) {
+                $query = ['after' => $after, 'per_page' => 100, 'page' => $page];
+                if ($before !== null) {
+                    $query['before'] = $before;
+                }
+
                 $response = $this->client->request('GET', "$baseUrl/api/v4/users/$userId/events", [
                     'headers' => ['PRIVATE-TOKEN' => $this->token],
-                    'query'   => [
+                    'query'   => $query,
-                        'after'    => $after,
-                        'per_page' => 100,
-                        'page'     => $page,
-                    ],
                 ]);
             }
         } while (count($events) === 100);

src/Service/Provider/GiteaProvider.php

@@ -51,31 +51,45 @@ final class GiteaProvider implements ProviderInterface
         ])->getContent();
     }
 
-    public function startFetch(): ResponseInterface
+    /**
+     * Fires a single heatmap request; $since/$until are carried through unused for client-side filtering in resolveFetch().
+     *
+     * @return array{response: ResponseInterface, since: ?\DateTimeImmutable, until: ?\DateTimeImmutable}
+     */
+    public function startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): array
     {
-       
-
         $this->logger->debug('GiteaProvider: fetching contributions', ['user' => $this->username, 'url' => $this->baseUrl]);
 
-        return $this->client->request('GET', "$this->baseUrl/api/v1/users/{$this->username}/heatmap", [
+        $response = $this->client->request('GET', "$this->baseUrl/api/v1/users/{$this->username}/heatmap", [
             'headers' => ['Authorization' => "token {$this->token}"],
         ]);
+
+        return ['response' => $response, 'since' => $since, 'until' => $until];
     }
 
     /**
+     * Filters the heatmap entries to the [$since, $until] window and sums contributions per day.
+     *
+     * @param  array{response: ResponseInterface, since: ?\DateTimeImmutable, until: ?\DateTimeImmutable} $handle
      * @return array<string, int> date (Y-m-d) => contribution count
      */
     public function resolveFetch(mixed $handle): array
     {
-        /** @var ResponseInterface $handle */
+        ['response' => $response, 'since' => $since, 'until' => $until] = $handle;
-        $data   = $handle->toArray();
+
-        $cutoff = (new \DateTimeImmutable('-365 days'))->getTimestamp();
+        /** @var ResponseInterface $response */
+        $data      = $response->toArray();
+        $cutoff    = ($since ?? new \DateTimeImmutable('-365 days'))->getTimestamp();
+        $ceiling   = $until?->getTimestamp();
         $result    = [];
 
         foreach ($data as $entry) {
             if ($entry['timestamp'] < $cutoff) {
                 continue;
             }
+            if ($ceiling !== null && $entry['timestamp'] > $ceiling) {
+                continue;
+            }
             $date          = date('Y-m-d', $entry['timestamp']);
             $result[$date] = ($result[$date] ?? 0) + (int) $entry['contributions'];
         }

src/Service/Provider/ProbeTrait.php

@@ -9,6 +9,10 @@ use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
 
 trait ProbeTrait
 {
+    /**
+     * Reports NotConfigured if credentials are missing, otherwise pings the provider
+     * and reports Ok or Error (with a classified error code and message).
+     */
     public function probe(): ProviderStatus
     {
         if (!$this->isConfigured()) {

src/Service/Provider/ProviderHealthChecker.php

@@ -8,13 +8,17 @@ use Symfony\Component\DependencyInjection\Attribute\AutowireIterator;
 
 final class ProviderHealthChecker
 {
+    /** @param iterable<ProviderInterface> $providers */
     public function __construct(
         #[AutowireIterator('app.provider')]
         private readonly iterable $providers,
     ) {}
 
     /**
-     * @return array{status: string, providers: array<string, array<string, string>>}
+     * Probes every configured provider and aggregates the results for the /health endpoint.
+     *
+     * @return array{status: string, providers: array<string, array<string, string>>} 'status' is
+     *   "degraded" if any provider's probe() reported an error, otherwise "ok"
      */
     public function check(): array
     {

src/Service/Provider/ProviderInterface.php

@@ -6,17 +6,33 @@ namespace GitContributionGraph\Service\Provider;
 
 interface ProviderInterface
 {
-    /** Fire the HTTP request(s) without blocking; returns an opaque handle for resolveFetch(). */
+    /**
-    public function startFetch(): mixed;
+     * Fire the HTTP request(s) without blocking; the result is read later by
+     * resolveFetch() so multiple providers' requests can be in flight at once.
+     *
+     * @param  ?\DateTimeImmutable $since lower bound (inclusive); defaults to 365 days ago
+     * @param  ?\DateTimeImmutable $until upper bound (inclusive); defaults to now
+     * @return mixed opaque handle to pass into resolveFetch()
+     */
+    public function startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): mixed;
 
-    /** @return array<string, int>  date (Y-m-d) => contribution count */
+    /**
+     * Block on the handle from startFetch() and parse it into a per-day count map.
+     *
+     * @param  mixed $handle the value returned by startFetch()
+     * @return array<string, int> date (Y-m-d) => contribution count
+     */
     public function resolveFetch(mixed $handle): array;
 
+    /** Whether the required credentials/URL for this provider are all set. */
     public function isConfigured(): bool;
 
+    /** Short lowercase identifier for this provider, e.g. "github". */
     public function getName(): string;
 
+    /** Check reachability/credentials without fetching contribution data; used by the /health endpoint. */
     public function probe(): ProviderStatus;
 
+    /** Make a lightweight authenticated request to verify the provider is reachable; throws on failure. */
     public function ping(): void;
 }

src/Service/Provider/ProviderStatus.php

@@ -4,8 +4,15 @@ declare(strict_types=1);
 
 namespace GitContributionGraph\Service\Provider;
 
+/** Result of probing a single provider, as reported by the /health endpoint. */
 final class ProviderStatus
 {
+    /**
+     * @param string              $name    provider identifier, e.g. "github"
+     * @param ProviderStatusType  $status  overall outcome of the probe
+     * @param ?ProviderErrorCode  $error   classified error code, set only when $status is Error
+     * @param ?string             $message human-readable error detail, set only when $status is Error
+     */
     public function __construct(
         public readonly string $name,
         public readonly ProviderStatusType $status,
@@ -13,7 +20,11 @@ final class ProviderStatus
         public readonly ?string $message = null,
     ) {}
 
-    /** @return array<string, string> */
+    /**
+     * Converts to the array shape used in the /health JSON response, omitting error/message when unset.
+     *
+     * @return array<string, string>
+     */
     public function toArray(): array
     {
         $data = ['status' => $this->status->value];

src/Service/Renderer/SvgRenderer.php

@@ -36,6 +36,12 @@ final class SvgRenderer
     private const MARGIN_Y  = 20;   // top margin for month labels
     private const PADDING   = 10;   // outer padding
 
+    /**
+     * Builds the full self-contained SVG heatmap for a contribution map.
+     *
+     * @param array<string, int> $contributions date (Y-m-d) => contribution count
+     * @param string             $theme         "dark" or "light"; unknown values fall back to "dark"
+     */
     public function render(array $contributions, string $theme = 'dark'): string
     {
         $colors = self::THEMES[$theme] ?? self::THEMES['dark'];
@@ -91,6 +97,9 @@ final class SvgRenderer
     /**
      * Builds a [week][day] grid where each cell is ['date' => 'Y-m-d', 'count' => int]
      * or null if the date is in the future.
+     *
+     * @param  array<string, int> $contributions date (Y-m-d) => contribution count
+     * @return array<int, array<int, array{date: string, count: int}|null>>
      */
     private function buildGrid(\DateTimeImmutable $start, \DateTimeImmutable $today, array $contributions): array
     {
@@ -125,6 +134,10 @@ final class SvgRenderer
         };
     }
 
+    /**
+     * @param  array<string, int> $contributions date (Y-m-d) => contribution count
+     * @return array{total: int}
+     */
     private function computeStats(array $contributions): array
     {
         return ['total' => array_sum($contributions)];
@@ -132,6 +145,7 @@ final class SvgRenderer
 
     // -------------------------------------------------------------------------
 
+    /** @param array<int, array<int, array{date: string, count: int}|null>> $grid */
     private function renderMonthLabels(array $grid, string $textColor): string
     {
         $out       = '';
@@ -142,7 +156,7 @@ final class SvgRenderer
                 if ($cell === null) {
                     continue;
                 }
-                $ts    = strtotime($cell['date']);
+                $ts    = (int) strtotime($cell['date']);
                 $month = (int) date('n', $ts);
                 $dom   = (int) date('j', $ts);
 
@@ -183,6 +197,10 @@ final class SvgRenderer
         return $out;
     }
 
+    /**
+     * @param array<int, array<int, array{date: string, count: int}|null>> $grid
+     * @param array{bg: string, text: string, levels: array<int, string>}  $colors
+     */
     private function renderCells(array $grid, array $colors): string
     {
         $out = '';
@@ -197,7 +215,7 @@ final class SvgRenderer
                 $y     = self::MARGIN_Y + $d * self::STEP;
                 $color = $colors['levels'][$this->level($cell['count'])];
 
-                $ts     = strtotime($cell['date']);
+                $ts     = (int) strtotime($cell['date']);
                 $suffix = $cell['count'] !== 1 ? 's' : '';
                 $label  = $cell['count'] > 0
                     ? $cell['count'] . ' contribution' . $suffix . ' on ' . date('F j, Y', $ts)
@@ -218,6 +236,7 @@ final class SvgRenderer
         return $out;
     }
 
+    /** @param array{bg: string, text: string, levels: array<int, string>} $colors */
     private function renderLegend(int $totalH, array $colors): string
     {
         $y   = $totalH - 14;

tests/Unit/Command/RefetchContributionsCommandTest.php

@@ -0,0 +1,149 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GitContributionGraph\Tests\Unit\Command;
+
+use GitContributionGraph\Command\RefetchContributionsCommand;
+use GitContributionGraph\Service\ContributionStore;
+use GitContributionGraph\Service\Provider\ProviderInterface;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Tester\CommandTester;
+
+#[CoversClass(RefetchContributionsCommand::class)]
+final class RefetchContributionsCommandTest extends TestCase
+{
+    /** @param ?array<string, int> $fresh */
+    private function makeProvider(
+        string $name,
+        bool $configured = true,
+        ?array $fresh = null,
+        ?\Throwable $throws = null,
+    ): ProviderInterface {
+        $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('getName')->willReturn($name);
+        $provider->method('isConfigured')->willReturn($configured);
+
+        if ($throws !== null) {
+            $provider->method('startFetch')->willThrowException($throws);
+        } elseif ($fresh !== null) {
+            $provider->method('resolveFetch')->willReturn($fresh);
+        }
+
+        return $provider;
+    }
+
+    /** @param iterable<ProviderInterface> $providers */
+    private function makeTester(iterable $providers, ContributionStore $store): CommandTester
+    {
+        $command = new RefetchContributionsCommand($providers, $store);
+
+        $application = new Application();
+        $application->add($command);
+
+        return new CommandTester($application->find('graph:contributions:refetch'));
+    }
+
+    #[Test]
+    public function it_refetches_the_default_365_day_window_for_all_configured_providers(): void
+    {
+        $store    = new ContributionStore(':memory:');
+        $provider = $this->makeProvider('github', fresh: ['2024-06-10' => 3]);
+
+        $tester = $this->makeTester([$provider], $store);
+        $exitCode = $tester->execute([]);
+
+        $this->assertSame(0, $exitCode);
+        $this->assertCount(1, $store->all('github'));
+    }
+
+    #[Test]
+    public function it_skips_unconfigured_providers_by_default(): void
+    {
+        $store    = new ContributionStore(':memory:');
+        $provider = $this->makeProvider('github', configured: false);
+
+        $tester = $this->makeTester([$provider], $store);
+        $tester->execute([]);
+
+        $this->assertCount(0, $store->all('github'));
+    }
+
+    #[Test]
+    public function it_fails_cleanly_on_an_unknown_provider_name(): void
+    {
+        $store    = new ContributionStore(':memory:');
+        $provider = $this->makeProvider('github');
+
+        $tester = $this->makeTester([$provider], $store);
+        $exitCode = $tester->execute(['--provider' => 'bogus']);
+
+        $this->assertSame(1, $exitCode);
+        $this->assertStringContainsString('Unknown provider: bogus', $tester->getDisplay());
+    }
+
+    #[Test]
+    public function it_restricts_to_the_named_provider(): void
+    {
+        $store    = new ContributionStore(':memory:');
+        $github   = $this->makeProvider('github', fresh: ['2024-06-10' => 1]);
+        $gitlab   = $this->makeProvider('gitlab', fresh: ['2024-06-10' => 1]);
+
+        $tester = $this->makeTester([$github, $gitlab], $store);
+        $tester->execute(['--provider' => 'github']);
+
+        $this->assertCount(1, $store->all('github'));
+        $this->assertCount(0, $store->all('gitlab'));
+    }
+
+    #[Test]
+    public function it_continues_with_remaining_providers_when_one_throws(): void
+    {
+        $store   = new ContributionStore(':memory:');
+        $failing = $this->makeProvider('gitlab', throws: new \RuntimeException('boom'));
+        $healthy = $this->makeProvider('github', fresh: ['2024-06-10' => 2]);
+
+        $tester = $this->makeTester([$failing, $healthy], $store);
+        $exitCode = $tester->execute([]);
+
+        $this->assertSame(0, $exitCode);
+        $this->assertCount(1, $store->all('github'));
+        $this->assertCount(0, $store->all('gitlab'));
+    }
+
+    #[Test]
+    public function it_fails_when_every_provider_errors(): void
+    {
+        $store   = new ContributionStore(':memory:');
+        $failing = $this->makeProvider('github', throws: new \RuntimeException('boom'));
+
+        $tester = $this->makeTester([$failing], $store);
+        $exitCode = $tester->execute([]);
+
+        $this->assertSame(1, $exitCode);
+    }
+
+    #[Test]
+    public function it_splits_a_multi_year_range_into_365_day_chunks(): void
+    {
+        $store = new ContributionStore(':memory:');
+        $calls = 0;
+
+        $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('getName')->willReturn('github');
+        $provider->method('isConfigured')->willReturn(true);
+        $provider->method('resolveFetch')->willReturnCallback(function () use (&$calls): array {
+            $calls++;
+
+            return [];
+        });
+
+        $tester = $this->makeTester([$provider], $store);
+        $tester->execute(['--from' => '2020-01-01', '--to' => '2023-01-01']);
+
+        $this->assertGreaterThan(1, $calls);
+    }
+}

tests/Unit/Service/ContributionAggregatorTest.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace GitContributionGraph\Tests\Unit\Service;
 
 use GitContributionGraph\Service\ContributionAggregator;
+use GitContributionGraph\Service\ContributionStore;
 use GitContributionGraph\Service\Provider\ProviderInterface;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\Test;
@@ -15,16 +16,31 @@ use Psr\Log\LoggerInterface;
 final class ContributionAggregatorTest extends TestCase
 {
     private LoggerInterface $logger;
+    private ContributionStore $store;
 
     protected function setUp(): void
     {
         $this->logger = $this->createStub(LoggerInterface::class);
+        $this->store  = new ContributionStore(':memory:');
+    }
+
+    /** @param ?array<string, int> $fresh */
+    private function makeProvider(string $name, bool $configured = true, ?array $fresh = null): ProviderInterface
+    {
+        $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('getName')->willReturn($name);
+        $provider->method('isConfigured')->willReturn($configured);
+        if ($fresh !== null) {
+            $provider->method('resolveFetch')->willReturn($fresh);
+        }
+
+        return $provider;
     }
 
     #[Test]
     public function it_returns_empty_array_when_no_providers_are_given(): void
     {
-        $aggregator = new ContributionAggregator([], $this->logger);
+        $aggregator = new ContributionAggregator([], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
@@ -34,10 +50,9 @@ final class ContributionAggregatorTest extends TestCase
     #[Test]
     public function it_skips_unconfigured_providers(): void
     {
-        $provider = $this->createStub(ProviderInterface::class);
+        $provider = $this->makeProvider('github', configured: false);
-        $provider->method('isConfigured')->willReturn(false);
 
-        $aggregator = new ContributionAggregator([$provider], $this->logger);
+        $aggregator = new ContributionAggregator([$provider], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
@@ -47,69 +62,68 @@ final class ContributionAggregatorTest extends TestCase
     #[Test]
     public function it_returns_contributions_from_a_configured_provider(): void
     {
-        $provider = $this->createStub(ProviderInterface::class);
+        $date     = (new \DateTimeImmutable('-1 day'))->format('Y-m-d');
-        $provider->method('isConfigured')->willReturn(true);
+        $provider = $this->makeProvider('github', fresh: [$date => 3]);
-        $provider->method('resolveFetch')->willReturn(['2024-01-01' => 3]);
 
-        $aggregator = new ContributionAggregator([$provider], $this->logger);
+        $aggregator = new ContributionAggregator([$provider], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
-        $this->assertSame(['2024-01-01' => 3], $result);
+        $this->assertSame([$date => 3], $result);
     }
 
     #[Test]
     public function it_sums_contributions_from_multiple_providers_on_the_same_date(): void
     {
-        $providerA = $this->createStub(ProviderInterface::class);
+        $dateA = (new \DateTimeImmutable('-1 day'))->format('Y-m-d');
-        $providerA->method('isConfigured')->willReturn(true);
+        $dateB = (new \DateTimeImmutable('-2 days'))->format('Y-m-d');
-        $providerA->method('resolveFetch')->willReturn(['2024-01-01' => 3, '2024-01-02' => 1]);
 
-        $providerB = $this->createStub(ProviderInterface::class);
+        $providerA = $this->makeProvider('github', fresh: [$dateA => 3, $dateB => 1]);
-        $providerB->method('isConfigured')->willReturn(true);
+        $providerB = $this->makeProvider('gitlab', fresh: [$dateA => 2]);
-        $providerB->method('resolveFetch')->willReturn(['2024-01-01' => 2, '2024-01-03' => 5]);
 
-        $aggregator = new ContributionAggregator([$providerA, $providerB], $this->logger);
+        $aggregator = new ContributionAggregator([$providerA, $providerB], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
-        $this->assertSame(['2024-01-01' => 5, '2024-01-02' => 1, '2024-01-03' => 5], $result);
+        $this->assertSame([$dateB => 1, $dateA => 5], $result);
     }
 
     #[Test]
     public function it_continues_fetching_remaining_providers_when_one_throws_on_start(): void
     {
+        $date = (new \DateTimeImmutable('-1 day'))->format('Y-m-d');
+
         $failing = $this->createStub(ProviderInterface::class);
+        $failing->method('getName')->willReturn('gitlab');
         $failing->method('isConfigured')->willReturn(true);
         $failing->method('startFetch')->willThrowException(new \RuntimeException('Network error'));
 
-        $healthy = $this->createStub(ProviderInterface::class);
+        $healthy = $this->makeProvider('github', fresh: [$date => 7]);
-        $healthy->method('isConfigured')->willReturn(true);
-        $healthy->method('resolveFetch')->willReturn(['2024-01-01' => 7]);
 
-        $aggregator = new ContributionAggregator([$failing, $healthy], $this->logger);
+        $aggregator = new ContributionAggregator([$failing, $healthy], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
-        $this->assertSame(['2024-01-01' => 7], $result);
+        $this->assertSame([$date => 7], $result);
     }
 
     #[Test]
     public function it_continues_fetching_remaining_providers_when_one_throws_on_resolve(): void
     {
+        $date = (new \DateTimeImmutable('-1 day'))->format('Y-m-d');
+
         $failing = $this->createStub(ProviderInterface::class);
+        $failing->method('getName')->willReturn('gitlab');
         $failing->method('isConfigured')->willReturn(true);
         $failing->method('resolveFetch')->willThrowException(new \RuntimeException('Network error'));
 
-        $healthy = $this->createStub(ProviderInterface::class);
+        $healthy = $this->makeProvider('github', fresh: [$date => 7]);
-        $healthy->method('isConfigured')->willReturn(true);
-        $healthy->method('resolveFetch')->willReturn(['2024-01-01' => 7]);
 
-        $aggregator = new ContributionAggregator([$failing, $healthy], $this->logger);
+        $aggregator = new ContributionAggregator([$failing, $healthy], $this->store, $this->logger);
 
         $result = $aggregator->aggregate();
 
-        $this->assertSame(['2024-01-01' => 7], $result);
+        $this->assertSame([$date => 7], $result);
     }
 
     #[Test]
@@ -119,10 +133,11 @@ final class ContributionAggregatorTest extends TestCase
         $logger->expects($this->once())->method('warning');
 
         $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('getName')->willReturn('github');
         $provider->method('isConfigured')->willReturn(true);
         $provider->method('startFetch')->willThrowException(new \RuntimeException('fail'));
 
-        (new ContributionAggregator([$provider], $logger))->aggregate();
+        (new ContributionAggregator([$provider], $this->store, $logger))->aggregate();
     }
 
     #[Test]
@@ -132,9 +147,77 @@ final class ContributionAggregatorTest extends TestCase
         $logger->expects($this->once())->method('warning');
 
         $provider = $this->createStub(ProviderInterface::class);
+        $provider->method('getName')->willReturn('github');
         $provider->method('isConfigured')->willReturn(true);
         $provider->method('resolveFetch')->willThrowException(new \RuntimeException('fail'));
 
-        (new ContributionAggregator([$provider], $logger))->aggregate();
+        (new ContributionAggregator([$provider], $this->store, $logger))->aggregate();
+    }
+
+    #[Test]
+    public function it_consults_latest_date_and_narrows_the_since_window_by_three_days(): void
+    {
+        $latest = (new \DateTimeImmutable('-30 days'))->getTimestamp();
+        $this->store->add('github', $latest, 1);
+
+        $provider = $this->createMock(ProviderInterface::class);
+        $provider->method('getName')->willReturn('github');
+        $provider->method('isConfigured')->willReturn(true);
+        $provider->expects($this->once())
+            ->method('startFetch')
+            ->with($this->callback(
+                fn (?\DateTimeImmutable $since): bool => $since !== null
+                    && $since->getTimestamp() === $latest - 3 * 86400
+            ))
+            ->willReturn(null);
+        $provider->method('resolveFetch')->willReturn([]);
+
+        (new ContributionAggregator([$provider], $this->store, $this->logger))->aggregate();
+    }
+
+    #[Test]
+    public function it_merges_freshly_fetched_contributions_into_the_store(): void
+    {
+        $date     = (new \DateTimeImmutable('-1 day'))->format('Y-m-d');
+        $provider = $this->makeProvider('github', fresh: [$date => 4]);
+
+        (new ContributionAggregator([$provider], $this->store, $this->logger))->aggregate();
+
+        $stored = iterator_to_array($this->store->all('github'));
+        $this->assertCount(1, $stored);
+        $this->assertSame(4, $stored[0]->count);
+    }
+
+    #[Test]
+    public function it_prunes_the_store_once_per_aggregate_call(): void
+    {
+        $store = $this->createMock(ContributionStore::class);
+        $store->method('latestDate')->willReturn(null);
+        $store->method('all')->willReturn(new \GitContributionGraph\Entity\ContributionCollection());
+        $store->expects($this->once())->method('prune');
+
+        $provider = $this->makeProvider('github', fresh: []);
+
+        (new ContributionAggregator([$provider], $store, $this->logger))->aggregate();
+    }
+
+    #[Test]
+    public function it_leaves_other_providers_stored_data_intact_when_one_provider_fails(): void
+    {
+        $date = (new \DateTimeImmutable('-1 day'))->getTimestamp();
+        $this->store->add('gitlab', $date, 9);
+
+        $failing = $this->createStub(ProviderInterface::class);
+        $failing->method('getName')->willReturn('gitlab');
+        $failing->method('isConfigured')->willReturn(true);
+        $failing->method('startFetch')->willThrowException(new \RuntimeException('Network error'));
+
+        $healthy = $this->makeProvider('github', fresh: []);
+
+        (new ContributionAggregator([$failing, $healthy], $this->store, $this->logger))->aggregate();
+
+        $stored = iterator_to_array($this->store->all('gitlab'));
+        $this->assertCount(1, $stored);
+        $this->assertSame(9, $stored[0]->count);
     }
 }

tests/Unit/Service/Provider/GitHubProviderTest.php

@@ -29,6 +29,7 @@ final class GitHubProviderTest extends TestCase
         );
     }
 
+    /** @param array<int, array{contributionDays: array<int, array{date: string, contributionCount: int}>}> $weeks */
     private function stubGraphqlResponse(array $weeks): ResponseInterface
     {
         $response = $this->createStub(ResponseInterface::class);
@@ -131,4 +132,27 @@ final class GitHubProviderTest extends TestCase
 
         $this->assertSame([], $result);
     }
+
+    #[Test]
+    public function it_narrows_the_graphql_query_window_when_since_and_until_are_given(): void
+    {
+        $since = new \DateTimeImmutable('2024-01-01');
+        $until = new \DateTimeImmutable('2024-01-31');
+        $capturedQuery = null;
+
+        $client = $this->createMock(HttpClientInterface::class);
+        $client->method('request')->willReturnCallback(
+            function (string $method, string $url, array $options) use (&$capturedQuery): ResponseInterface {
+                $capturedQuery = $options['json']['query'];
+
+                return $this->stubGraphqlResponse([]);
+            }
+        );
+
+        $provider = $this->makeProvider(client: $client);
+        $provider->startFetch($since, $until);
+
+        $this->assertStringContainsString('2024-01-01T00:00:00Z', $capturedQuery);
+        $this->assertStringContainsString('2024-01-31T23:59:59Z', $capturedQuery);
+    }
 }

tests/Unit/Service/Provider/GitLabProviderTest.php

@@ -31,6 +31,7 @@ final class GitLabProviderTest extends TestCase
         );
     }
 
+    /** @param array<int, array<string, int|string>> $data raw JSON body, e.g. events or the user lookup */
     private function stubResponse(array $data): ResponseInterface
     {
         $response = $this->createStub(ResponseInterface::class);
@@ -128,4 +129,27 @@ final class GitLabProviderTest extends TestCase
         $this->assertSame(100, $result['2024-06-10']);
         $this->assertSame(1, $result['2024-06-11']);
     }
+
+    #[Test]
+    public function it_sends_after_and_before_query_params_when_since_and_until_are_given(): void
+    {
+        $capturedQuery = null;
+
+        $client = $this->createMock(HttpClientInterface::class);
+        $client->method('request')->willReturnCallback(
+            function (string $method, string $url, array $options = []) use (&$capturedQuery): ResponseInterface {
+                if (str_contains($url, '/events')) {
+                    $capturedQuery = $options['query'];
+                }
+
+                return $this->stubResponse(str_contains($url, '/events') ? [] : [['id' => 42]]);
+            }
+        );
+
+        $provider = $this->makeProvider(client: $client);
+        $provider->startFetch(new \DateTimeImmutable('2024-01-01'), new \DateTimeImmutable('2024-01-31'));
+
+        $this->assertSame('2024-01-01', $capturedQuery['after']);
+        $this->assertSame('2024-01-31', $capturedQuery['before']);
+    }
 }

tests/Unit/Service/Provider/GiteaProviderTest.php

@@ -30,6 +30,7 @@ final class GiteaProviderTest extends TestCase
         );
     }
 
+    /** @param array<int, array{timestamp: int, contributions: int}> $data */
     private function stubResponse(array $data): ResponseInterface
     {
         $response = $this->createStub(ResponseInterface::class);
@@ -111,4 +112,44 @@ final class GiteaProviderTest extends TestCase
 
         $this->assertSame([], $result);
     }
+
+    #[Test]
+    public function it_filters_out_entries_before_since(): void
+    {
+        $since = new \DateTimeImmutable('2024-01-10');
+        $before = $since->modify('-1 day')->getTimestamp();
+        $after  = $since->modify('+1 day')->getTimestamp();
+
+        $client = $this->createStub(HttpClientInterface::class);
+        $client->method('request')->willReturn($this->stubResponse([
+            ['timestamp' => $before, 'contributions' => 3],
+            ['timestamp' => $after, 'contributions' => 2],
+        ]));
+
+        $provider = $this->makeProvider(client: $client);
+        $result = $provider->resolveFetch($provider->startFetch($since));
+
+        $this->assertArrayNotHasKey(date('Y-m-d', $before), $result);
+        $this->assertSame(2, $result[date('Y-m-d', $after)]);
+    }
+
+    #[Test]
+    public function it_filters_out_entries_after_until(): void
+    {
+        $until = new \DateTimeImmutable('-10 days');
+        $before = $until->modify('-1 day')->getTimestamp();
+        $after  = $until->modify('+1 day')->getTimestamp();
+
+        $client = $this->createStub(HttpClientInterface::class);
+        $client->method('request')->willReturn($this->stubResponse([
+            ['timestamp' => $before, 'contributions' => 3],
+            ['timestamp' => $after, 'contributions' => 2],
+        ]));
+
+        $provider = $this->makeProvider(client: $client);
+        $result = $provider->resolveFetch($provider->startFetch(null, $until));
+
+        $this->assertSame(3, $result[date('Y-m-d', $before)]);
+        $this->assertArrayNotHasKey(date('Y-m-d', $after), $result);
+    }
 }

tests/Unit/Service/Provider/ProbeTraitTest.php

@@ -31,7 +31,7 @@ final class ProbeTraitTest extends TestCase
             public function isConfigured(): bool { return $this->configured; }
             public function getName(): string { return 'test'; }
             public function ping(): void { ($this->ping)(); }
-            public function startFetch(): mixed { return null; }
+            public function startFetch(?\DateTimeImmutable $since = null, ?\DateTimeImmutable $until = null): mixed { return null; }
             public function resolveFetch(mixed $handle): array { return []; }
         };
     }

tests/Unit/Service/Renderer/SvgRendererTest.php

@@ -54,6 +54,7 @@ final class SvgRendererTest extends TestCase
         $this->assertStringContainsString($expectedColor, $svg);
     }
 
+    /** @return iterable<string, array{string, string}> */
     public static function theme_background_provider(): iterable
     {
         yield 'dark theme'    => ['dark',    '#0d1117'];
@@ -97,6 +98,7 @@ final class SvgRendererTest extends TestCase
         $this->assertStringContainsString('>' . $label . '<', $svg);
     }
 
+    /** @return iterable<string, array{string}> */
     public static function day_of_week_label_provider(): iterable
     {
         yield 'Monday'    => ['Mon'];