[Unit]
Description=Monthly mirror update – Timeshift backup then GhostMirror refresh
Documentation=https://github.com/vbextreme/ghostmirror
After=network-online.target
Wants=network-online.target

[Service]
Type=oneshot

# Step 1: Timeshift RSYNC snapshot before touching anything
ExecStart=/bin/sh -c '/usr/bin/timeshift --create --rsync \
    --comments "pre-ghostmirror monthly mirror update $(date +%%Y-%%m-%%d %%H:%%M:%%S)" \
    --scripted'

# Step 2: Fetch & rank mirror pool
# -c  countries: Switzerland (primary), Germany, Italy + Austria, France, Netherlands
# -L  30 candidates
# -S  drop errored mirrors, prefer synced + fresh + nearest
ExecStart=/usr/bin/ghostmirror \
    -P -o \
    -c Switzerland,Germany,Italy,Austria,France,Netherlands \
    -l /etc/pacman.d/mirrorlist \
    -L 30 \
    -S state,outofdate,morerecent,ping

# Step 3: Speed-test candidates, write final top 10 to mirrorlist
# -m  use the file from step 2
# -u  file is already uncommented
# -s  light speed test (~6 MiB per mirror)
# -L  keep top 10
# -S  stability + speed on top of sync/freshness
ExecStart=/usr/bin/ghostmirror \
    -P -o \
    -m /etc/pacman.d/mirrorlist \
    -u \
    -l /etc/pacman.d/mirrorlist \
    -L 10 \
    -s light \
    -S state,outofdate,morerecent,estimated,speed

Nice=10
IOSchedulingClass=best-effort
IOSchedulingPriority=5
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target