#!/usr/bin/env bash
set -euo pipefail
cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.."
command -v docker >/dev/null || { echo 'Docker가 필요합니다.' >&2; exit 1; }
docker compose version >/dev/null
# Compose가 해석한 설정만 사용합니다. .env를 셸 코드로 실행하지 않습니다.
resolved="$(docker compose config --environment)"
while IFS='=' read -r key value; do
  case "$key" in
    TRILIUM_KO_PORT|TRILIUM_KO_BIND|TRILIUM_KO_DATA_DIR|TRILIUM_KO_IMAGE) export "$key=$value" ;;
  esac
done <<< "$resolved"
unset resolved
export TRILIUM_KO_PORT="${TRILIUM_KO_PORT:-8082}"
export TRILIUM_KO_BIND="${TRILIUM_KO_BIND:-127.0.0.1}"
export TRILIUM_KO_DATA_DIR="${TRILIUM_KO_DATA_DIR:-./data}"
[[ "$TRILIUM_KO_PORT" =~ ^[0-9]+$ ]] && ((TRILIUM_KO_PORT>0 && TRILIUM_KO_PORT<65536)) || { echo '포트는 1~65535의 숫자여야 합니다.' >&2; exit 1; }
docker compose config --quiet
if [[ -d "$TRILIUM_KO_DATA_DIR" ]]; then
  data_absolute="$(cd -- "$TRILIUM_KO_DATA_DIR" && pwd)"
  own="$(docker compose ps -q trilium)"
  for running in $(docker ps -q --no-trunc); do
    [[ "$running" == "$own" ]] && continue
    mounted="$(docker inspect --format '{{range .Mounts}}{{if eq .Destination "/home/node/trilium-data"}}{{.Source}}{{end}}{{end}}' "$running")"
    if [[ "$mounted" == "$data_absolute" ]]; then echo '다른 컨테이너가 이 데이터를 사용 중입니다. 해당 컨테이너를 먼저 중지하세요.' >&2; exit 1; fi
  done
fi
old_container="$(docker compose ps -aq trilium)"
old_image=''
rollback_image=''
if [[ -n "$old_container" ]]; then
  old_image="$(docker inspect --format '{{.Image}}' "$old_container")"
  rollback_image="trilium-korean-rollback:$(date -u +%Y%m%dT%H%M%SZ)-$$"
  docker image tag "$old_image" "$rollback_image"
fi
echo '검증된 버전의 한국어 이미지를 빌드합니다.'
docker compose build trilium
backup=''
stopped=0
trap 'if [[ "$stopped" == 1 && -n "$old_container" ]]; then docker start "$old_container" >/dev/null || true; fi' ERR
if [[ -d "$TRILIUM_KO_DATA_DIR" ]]; then
  if [[ -n "$old_container" ]]; then docker compose stop trilium; stopped=1; fi
  backup="$PWD/backups/$(date -u +%Y%m%dT%H%M%SZ)-$$"
  mkdir -p -- "$backup"; chmod 700 "$backup"
  data_absolute="$(cd -- "$TRILIUM_KO_DATA_DIR" && pwd)"
  docker run --rm --user 0 --entrypoint sh -v "$data_absolute:/backup-source:ro" -v "$backup:/backup-target" "${TRILIUM_KO_IMAGE:-trilium-korean:2.0.0}" -c 'umask 077; tar -czpf /backup-target/data.tar.gz -C /backup-source .'
  printf '%s\n' "$rollback_image" > "$backup/previous-image.txt"
  printf '%s\n' "$old_image" > "$backup/previous-image-id.txt"
  cp docker-compose.yml "$backup/docker-compose.yml"
  [[ ! -f .env ]] || cp .env "$backup/.env"
  echo "데이터 백업: $backup"
fi
if docker compose up -d --no-build --wait --wait-timeout 180; then
  stopped=0
  echo "배포 완료: http://${TRILIUM_KO_BIND}:${TRILIUM_KO_PORT}"
  echo '새 설치라면 초기 설정에서 새 문서를 만든 뒤 한국어를 선택하세요.'
else
  stopped=0
  echo '기동 검증에 실패했습니다.' >&2
  if [[ -n "$old_image" ]]; then
    echo '이전 이미지로 되돌립니다. 데이터 백업은 유지합니다.' >&2
    TRILIUM_KO_IMAGE="$rollback_image" docker compose up -d --no-build --pull never --wait --wait-timeout 180 || true
  fi
  [[ -z "$backup" ]] || echo "데이터 복구용 백업: $backup/data.tar.gz" >&2
  exit 1
fi