'use strict';

const mdl_NotificationTemplate = require('../../models/notifications/notification_template.mdl');
const R           = require('../../utils/response.util');
const logActivity = require('../../utils/logActivity.util');

// ─── GET /admin/notification-templates ─────────────────────────────────────────

exports.getNotificationTemplates = async (req, res) => {
  try {
    const templates = await mdl_NotificationTemplate.findAll({
      order: [['notify_type', 'ASC'], ['type', 'ASC']],
    });
    return R.success(res, 'Announcement templates retrieved.', templates);
  } catch (err) {
    console.error('[ADMIN][GET NOTIFICATION TEMPLATES]', err);
    return R.error(res, 'Could not retrieve announcement templates.', 500);
  }
};

// ─── GET /admin/notification-templates/:id ─────────────────────────────────────

exports.getNotificationTemplate = async (req, res) => {
  try {
    const template = await mdl_NotificationTemplate.findByPk(req.params.id);
    if (!template) return R.error(res, 'Announcement template not found.', 404);
    return R.success(res, 'Announcement template retrieved.', template);
  } catch (err) {
    console.error('[ADMIN][GET NOTIFICATION TEMPLATE]', err);
    return R.error(res, 'Could not retrieve announcement template.', 500);
  }
};

// ─── PUT /admin/notification-templates/:id ─────────────────────────────────────
// No create/delete endpoints — every row is is_system by definition (a new
// type needs a code call site before it means anything), so there is nothing
// valid to create or delete through this UI.

exports.updateNotificationTemplate = async (req, res) => {
  try {
    const template = await mdl_NotificationTemplate.findByPk(req.params.id);
    if (!template) return R.error(res, 'Announcement template not found.', 404);

    const { label, title, message, publish } = req.body;

    if (title !== undefined && !title.trim())     return R.error(res, 'title cannot be empty.', 400);
    if (message !== undefined && !message.trim()) return R.error(res, 'message cannot be empty.', 400);

    // "Publish" writes title/message straight to the live columns
    // renderNotification() reads and clears any pending draft. A plain save
    // (no publish flag) writes into draft_title/draft_message instead, so
    // real notifications keep using the last-published content until an
    // admin comes back and explicitly publishes again.
    const isPublishing = publish === true || publish === 'true';
    const nextTitle     = title   ?? template.draft_title   ?? template.title;
    const nextMessage   = message ?? template.draft_message ?? template.message;

    await template.update({
      label: label ?? template.label,
      ...(isPublishing
        ? {
            status:        'sent',
            title:         nextTitle,
            message:       nextMessage,
            draft_title:   null,
            draft_message: null,
            last_sent_at:  new Date(),
          }
        : {
            draft_title:   nextTitle,
            draft_message: nextMessage,
          }),
    });

    logActivity(req.user?.user_id, 'update_notification_template', { entityType: 'notification_template', entityId: template.notification_template_id, details: { type: template.type, published: isPublishing } });

    return R.success(res, 'Announcement template updated.', template);
  } catch (err) {
    console.error('[ADMIN][UPDATE NOTIFICATION TEMPLATE]', err);
    return R.error(res, 'Could not update announcement template.', 500);
  }
};