#!/bin/bash
set -euo pipefail

# Lade DB-Verbindungswerte aus .env
source .env

echo "[1/4] Sicherstellen, dass .env mit echten Werten existiert..."
test -f .env || { echo "Fehler: .env fehlt!"; exit 1; }

PG_SU_USER="${PG_SUPERUSER:-postgres}"
PG_SU_PASS="${PG_SUPERPASS:-}"
DB_HOST="${DB_HOSTNAME}"
DB_PORT="${DB_PORT:-5432}"
APP_DB="${DB_DATABASE}"
APP_USER="${DB_USERNAME}"

if [ -z "$PG_SU_PASS" ]; then
  echo "Fehler: PG_SUPERUSER und/oder PG_SUPERPASS müssen in .env gesetzt sein."
  exit 1
fi

echo "[2/4] PostgreSQL DB '${APP_DB}' prüfen/anlegen..."
export PGPASSWORD="${PG_SU_PASS}"
if ! psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${PG_SU_USER}" -d postgres -tAc "SELECT 1 FROM pg_database WHERE datname = '${APP_DB}'" | grep -q 1; then
  echo "  Database wird angelegt..."
  # Alte Backends trennen
  psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${PG_SU_USER}" -d postgres -c \
    "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = '${APP_DB}';" || true
  sleep 2
  psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${PG_SU_USER}" -d postgres -c \
    "DROP DATABASE IF EXISTS ${APP_DB};" || true
  sleep 2
  psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${PG_SU_USER}" -d postgres -c \
    "CREATE DATABASE ${APP_DB} OWNER ${APP_USER};"
else
  echo "  Database existiert bereits."
fi

echo "[3/4] Extensions sicherstellen..."
export PGPASSWORD="${DB_PASSWORD}"
psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${APP_USER}" -d "${APP_DB}" -c "CREATE EXTENSION IF NOT EXISTS vector;"
psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${APP_USER}" -d "${APP_DB}" -c "CREATE EXTENSION IF NOT EXISTS cube CASCADE;"

echo "[4/4] Upload-Verzeichnis erstellen und Stack starten..."
mkdir -p /mnt/docker/immich/upload
docker compose up -d --remove-orphans

echo ""
echo "Done. Logs prüfen mit: docker compose logs -f immich-server"