#!/bin/bash
# Daily USB backup. Dumps DBs for consistency, then rsyncs everything.
set -euo pipefail

FAILURES=()

# Check the USB drive is actually mounted
if ! mountpoint -q /mnt/backup; then
    echo "FATAL: /mnt/backup is not mounted" >&2
    exit 1
fi

# Dump Nextcloud PostgreSQL for consistency
if docker exec nextcloud-db pg_dumpall -U nextcloud > /opt/argento/docker/nextcloud/db/pg_dumpall.sql.tmp; then
    mv /opt/argento/docker/nextcloud/db/pg_dumpall.sql.tmp /opt/argento/docker/nextcloud/db/pg_dumpall.sql
else
    rm -f /opt/argento/docker/nextcloud/db/pg_dumpall.sql.tmp
    FAILURES+=("nextcloud pg_dump")
fi

# Dump Gitea SQLite for consistency
sqlite3 /opt/argento/docker/gitea/data/gitea/gitea.db \
    ".backup /opt/argento/docker/gitea/data/gitea/gitea.db.bak" \
    || FAILURES+=("gitea sqlite backup")

# Dump Jellyfin SQLite DBs for consistency
for db in jellyfin library; do
    sqlite3 /opt/argento/docker/jellyfin/config/data/${db}.db \
        ".backup /opt/argento/docker/jellyfin/config/data/${db}.db.bak" \
        || FAILURES+=("jellyfin ${db} sqlite backup")
done

# Single rsync covers everything: configs, app data, media, DB dumps
RSYNC_OPTS="-a --delete"
[ -t 1 ] && RSYNC_OPTS="$RSYNC_OPTS --info=progress2"
rsync $RSYNC_OPTS /opt/argento/ /mnt/backup/argento/ \
    || FAILURES+=("rsync argento")

if [ ${#FAILURES[@]} -gt 0 ]; then
    echo "BACKUP FAILED: ${FAILURES[*]}" >&2
    exit 1
fi

echo "Backup completed successfully at $(date)"