#!/usr/bin/env bash
# Развёртывание Nextcloud через Docker Compose
# Запускать БЕЗ sudo: ./install.sh [домен_или_ip]

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "${SCRIPT_DIR}"

# shellcheck source=../lib/common.sh
source "${SCRIPT_DIR}/../lib/common.sh"

drop_root_if_sudo "${SCRIPT_DIR}/install.sh" "$@"

RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; NC='\033[0m'
log_info()  { echo -e "${GREEN}[INFO]${NC} $*"; }
log_warn()  { echo -e "${YELLOW}[WARN]${NC} $*"; }
log_error() { echo -e "${RED}[ERROR]${NC} $*" >&2; }

DOMAIN=""
DOCKER_AUTO="prompt"

prompt_path() {
  local label="$1"
  local default="$2"
  local value=""
  read -r -p "${label} [${default}]: " value
  echo "${value:-$default}"
}

parse_args() {
  local args=()
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --install-docker) DOCKER_AUTO="yes"; shift ;;
      --skip-docker)    DOCKER_AUTO="skip"; shift ;;
      -h|--help)
        echo "Использование: ./install.sh [--install-docker|--skip-docker] [домен]"
        exit 0
        ;;
      *) args+=("$1"); shift ;;
    esac
  done
  DOMAIN="${args[0]:-}"
}

ensure_docker_ready() {
  ensure_docker "${SCRIPT_DIR}/install-docker.sh" "${DOCKER_AUTO}" || {
    log_error "Docker недоступен. Установите вручную:"
    log_error "  sudo ./install-docker.sh $(id -un)"
    exit 1
  }
}

prompt_storage_paths() {
  echo ""
  echo "=== Пути хранения (вне nextcloud_install) ==="
  CONFIG_DIR="$(prompt_path "Конфиг Nextcloud (config.php)" "${NEXTCLOUD_CONFIG_DIR:-/var/nextcloud/config}")"
  DATADIR="$(prompt_path "Файлы пользователей" "${NEXTCLOUD_DATADIR:-/mnt/hgfs/nextcloud_data}")"
  APPDATA="$(prompt_path "appdata (App Store, превью)" "${NEXTCLOUD_APPDATA:-/var/nextcloud/appdata}")"
  CUSTOM_APPS="$(prompt_path "Приложения из магазина" "${NEXTCLOUD_CUSTOM_APPS:-/var/nextcloud/custom_apps}")"
  BACKUP_DIR="$(prompt_path "Каталог бэкапов" "${NEXTCLOUD_BACKUP_DIR:-/var/nextcloud/backups}")"

  sed -i "s|^NEXTCLOUD_CONFIG_DIR=.*|NEXTCLOUD_CONFIG_DIR=${CONFIG_DIR}|" .env
  sed -i "s|^NEXTCLOUD_DATADIR=.*|NEXTCLOUD_DATADIR=${DATADIR}|" .env
  sed -i "s|^NEXTCLOUD_APPDATA=.*|NEXTCLOUD_APPDATA=${APPDATA}|" .env
  sed -i "s|^NEXTCLOUD_CUSTOM_APPS=.*|NEXTCLOUD_CUSTOM_APPS=${CUSTOM_APPS}|" .env
  sed -i "s|^NEXTCLOUD_BACKUP_DIR=.*|NEXTCLOUD_BACKUP_DIR=${BACKUP_DIR}|" .env
  # shellcheck disable=SC1091
  source .env
}

prepare_env() {
  if [[ ! -f ".env" ]]; then
    bash "${SCRIPT_DIR}/setup-env.sh" "${DOMAIN}"
  fi
  grep -q 'CHANGE_ME' .env && { log_error "В .env остались CHANGE_ME — пересоздайте: rm .env && ./setup-env.sh"; exit 1; }
  # shellcheck disable=SC1091
  source .env
  if [[ -z "${NEXTCLOUD_INSTANCEID:-}" ]]; then
    NEXTCLOUD_INSTANCEID="$(openssl rand -base64 48 | tr -dc 'a-z0-9' | head -c 12)"
    echo "NEXTCLOUD_INSTANCEID=${NEXTCLOUD_INSTANCEID}" >> .env
    log_warn "Добавлен NEXTCLOUD_INSTANCEID в .env"
  fi
  if [[ -t 0 ]]; then
    prompt_storage_paths
  elif [[ -z "${NEXTCLOUD_CONFIG_DIR:-}" ]]; then
    log_error "Задайте NEXTCLOUD_CONFIG_DIR в .env или запустите ./install.sh в интерактивном терминале"
    exit 1
  fi
}

config_write() {
  config_write_file "$1"
}

restore_config_defaults() {
  local src="${SCRIPT_DIR}/config.defaults"
  local cfg="${NEXTCLOUD_CONFIG_DIR}"
  if [[ ! -d "${src}" ]]; then
    log_warn "Нет ${src}/ — пропуск шаблонов config"
    return 0
  fi
  log_info "Проверка config для установки/переустановки..."
  prepare_config_for_reinstall "${src}" "${cfg}" "${NEXTCLOUD_INSTANCEID}"
}

ensure_instanceid_config() {
  # shellcheck disable=SC1091
  source .env
  local cfg="${NEXTCLOUD_CONFIG_DIR}"
  config_write_file "${cfg}/instanceid.config.php" <<EOF
<?php
\$CONFIG = array (
  'instanceid' => '${NEXTCLOUD_INSTANCEID}',
);
EOF
  config_write_file "${cfg}/datadir.config.php" <<'EOF'
<?php
$CONFIG = array (
  'check_data_directory_permissions' => false,
);
EOF
  fix_config_permissions "${cfg}"
  log_info "instanceid → ${NEXTCLOUD_INSTANCEID}"
}

prepare_host_dirs() {
  # shellcheck disable=SC1091
  source .env
  local dirs=(
    "${NEXTCLOUD_CONFIG_DIR}"
    "${NEXTCLOUD_DATADIR}"
    "${NEXTCLOUD_APPDATA}"
    "${NEXTCLOUD_CUSTOM_APPS}"
  )

  for d in "${dirs[@]}"; do
    if [[ ! -d "${d}" ]]; then
      log_info "Создание ${d}"
    fi
    ensure_host_dir "${d}"
    chown_wwwdata_dir "${d}"
  done

  if [[ ! -d "${NEXTCLOUD_BACKUP_DIR}" ]]; then
    log_info "Создание ${NEXTCLOUD_BACKUP_DIR}"
  fi
  ensure_host_dir "${NEXTCLOUD_BACKUP_DIR}"
  sudo chown "$(id -u):$(id -g)" "${NEXTCLOUD_BACKUP_DIR}"
  sudo chmod 0775 "${NEXTCLOUD_BACKUP_DIR}"

  sudo touch "${NEXTCLOUD_DATADIR}/.ncdata" 2>/dev/null || true
  sudo chown 33:33 "${NEXTCLOUD_DATADIR}/.ncdata" 2>/dev/null || true

  log_info "Хранилище (вне nextcloud_install):"
  echo "  config       → ${NEXTCLOUD_CONFIG_DIR}"
  echo "  data         → ${NEXTCLOUD_DATADIR}"
  echo "  appdata      → ${NEXTCLOUD_APPDATA}  (appdata_${NEXTCLOUD_INSTANCEID})"
  echo "  custom_apps  → ${NEXTCLOUD_CUSTOM_APPS}"
  echo "  backups      → ${NEXTCLOUD_BACKUP_DIR}"
}

prepare_dirs() {
  prepare_host_dirs
  restore_config_defaults
  ensure_instanceid_config
}

deploy_stack() {
  log_info "Загрузка образов..."
  run_compose pull
  log_info "Запуск контейнеров..."
  run_compose up -d
  ensure_app_code_ready

  local waited=0 port
  port="$(grep '^NEXTCLOUD_PORT=' .env | cut -d= -f2 || echo 8080)"
  log_info "Ожидание Nextcloud на порту ${port}..."
  while [[ ${waited} -lt 120 ]]; do
    curl -sf "http://127.0.0.1:${port}/status.php" &>/dev/null && break
    sleep 5; waited=$((waited + 5)); echo -n "."
  done
  echo ""

  # shellcheck disable=SC1091
  source .env
  ensure_nextcloud_installed "${port}" || true
  fix_config_permissions "${NEXTCLOUD_CONFIG_DIR}"
}

print_summary() {
  # shellcheck disable=SC1091
  source .env
  log_info "=== Nextcloud (Docker) развёрнут ==="
  echo "  URL:     http://127.0.0.1:${NEXTCLOUD_PORT:-8080}"
  echo "  Логин:   ${NEXTCLOUD_ADMIN_USER:-admin} (пароль в .env)"
  echo "  config:  ${NEXTCLOUD_CONFIG_DIR}"
  echo "  data:    ${NEXTCLOUD_DATADIR}"
  log_warn "HTTPS: ./enable-docker-ssl.sh your.domain (порт 8443)"
}

main() {
  parse_args "$@"
  log_info "Docker-установка Nextcloud"
  ensure_docker_ready
  prepare_env
  prepare_dirs
  deploy_stack
  print_summary
}

main "$@"