#!/bin/bash
# =============================================================================
# Frigate Clip Sync: USB Drive → NAS
# Copies alert/detection clips and exports to NAS for long-term retention.
# Frigate handles short-term cleanup on USB (7 days).
# The cleanup-frigate-media.sh script handles NAS cleanup (90 days).
# Run via cron: 0 2 * * * /mnt/docker-data/scripts/sync-frigate-to-nas.sh
# =============================================================================

USB_DIR="/mnt/frigate-recordings"
NAS_DIR="/mnt/docker-data/media/frigate"
LOG_FILE="/var/log/frigate-sync.log"

log() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') $1" | tee -a "$LOG_FILE"
}

# Verify both paths exist
if [ ! -d "$USB_DIR" ]; then
    log "ERROR: USB drive not mounted at $USB_DIR"
    exit 1
fi

if [ ! -d "$NAS_DIR" ]; then
    log "ERROR: NAS not mounted at $NAS_DIR"
    exit 1
fi

log "=== Frigate clip sync started ==="

# Sync clips (alert/detection event media)
if [ -d "$USB_DIR/clips" ]; then
    log "Syncing clips..."
    rsync -av --no-o --no-g "$USB_DIR/clips/" "$NAS_DIR/clips/" >> "$LOG_FILE" 2>&1
    log "Clips sync complete"
fi

# Sync exports (user-saved clips)
if [ -d "$USB_DIR/exports" ]; then
    log "Syncing exports..."
    rsync -av --no-o --no-g "$USB_DIR/exports/" "$NAS_DIR/exports/" >> "$LOG_FILE" 2>&1
    log "Exports sync complete"
fi

# Report sizes
USB_CLIPS=$(du -sh "$USB_DIR/clips" 2>/dev/null | cut -f1)
USB_RECORDINGS=$(du -sh "$USB_DIR/recordings" 2>/dev/null | cut -f1)
NAS_CLIPS=$(du -sh "$NAS_DIR/clips" 2>/dev/null | cut -f1)
NAS_EXPORTS=$(du -sh "$NAS_DIR/exports" 2>/dev/null | cut -f1)

log "USB clips: $USB_CLIPS | USB recordings: $USB_RECORDINGS"
log "NAS clips: $NAS_CLIPS | NAS exports: $NAS_EXPORTS"
log "=== Sync complete ==="