#!/bin/bash
set -euo pipefail

# Source environment vars (crond runs in a minimal env)
if [ -f /etc/restic-backup.env ]; then
    set -a
    . /etc/restic-backup.env
    set +a
fi

echo "==> Backup started at $(date -Iseconds)"

# Run pre-backup hook
if [ -x /hooks/pre-backup.sh ]; then
    echo "==> Running pre-backup hook"
    /hooks/pre-backup.sh
fi

# Run restic backup
echo "==> Running restic backup: $BACKUP_SOURCE"
restic backup $BACKUP_SOURCE

# Apply retention policy
echo "==> Applying retention policy: daily=$KEEP_DAILY weekly=$KEEP_WEEKLY monthly=$KEEP_MONTHLY yearly=$KEEP_YEARLY"
restic forget --prune \
    --keep-daily="$KEEP_DAILY" \
    --keep-weekly="$KEEP_WEEKLY" \
    --keep-monthly="$KEEP_MONTHLY" \
    --keep-yearly="$KEEP_YEARLY"

# Run post-backup hook
if [ -x /hooks/post-backup.sh ]; then
    echo "==> Running post-backup hook"
    /hooks/post-backup.sh
fi

echo "==> Backup finished at $(date -Iseconds)"