#!/usr/bin/env bash
# PostgreSQL + MariaDB + Gitea 저장소 일일 통합 백업
# 운영 cron 예: 0 2 * * * cd /path/ncue_backup && bash scripts/daily-backup.sh >> /var/log/ncue-backup.log 2>&1
set -euo pipefail

REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
# shellcheck source=scripts/lib/load-env.sh
source "$REPO_ROOT/scripts/lib/load-env.sh"
# shellcheck source=scripts/lib/common.sh
source "$REPO_ROOT/scripts/lib/common.sh"

load_project_env "$REPO_ROOT/.env"

BACKUP_DIR="${BACKUP_DIR:-$REPO_ROOT/backup}"
BACKUP_STAMP="${BACKUP_STAMP:-$(date +%Y%m%d)}"
BACKUP_RUN_DIR="$BACKUP_DIR/$BACKUP_STAMP"
export BACKUP_DIR BACKUP_STAMP BACKUP_RUN_DIR

mkdir -p "$BACKUP_RUN_DIR" "$BACKUP_DIR/latest"

echo "[$(log_ts)] daily-backup start → $BACKUP_RUN_DIR"

failures=0

run_step() {
  local name="$1"
  local script="$2"
  echo "[$(log_ts)] daily-backup step: $name"
  if bash "$script"; then
    echo "[$(log_ts)] daily-backup step ok: $name"
  else
    echo "[$(log_ts)] daily-backup step failed: $name" >&2
    failures=$((failures + 1))
  fi
}

run_step "postgresql" "$REPO_ROOT/scripts/pg-backup.sh"
run_step "mariadb" "$REPO_ROOT/scripts/mr-backup.sh"
run_step "gitea" "$REPO_ROOT/scripts/gitea-backup.sh"

ln -sfn "$BACKUP_RUN_DIR" "$BACKUP_DIR/latest"

prune_old_backups "$BACKUP_DIR" "${BACKUP_RETENTION_DAYS:-30}"

if [[ "$failures" -gt 0 ]]; then
  echo "[$(log_ts)] daily-backup finished with ${failures} failure(s)." >&2
  exit 1
fi

echo "[$(log_ts)] daily-backup done → $BACKUP_DIR/latest"