/***********************************************************************************************************************************************************************
 * File Name: profile.controller.js  (admin)
 * Type of Program: Controller
 * Description: Self-service profile management for admin users.
 *              All routes require: authenticate → requireAdmin()
 *
 *              Endpoints:
 *              GET    /api/admin/profile          → view own profile
 *              PUT    /api/admin/profile          → update personal_info
 *              POST   /api/admin/profile/avatar   → upload / replace avatar
 *              DELETE /api/admin/profile/avatar   → remove avatar
 *
 * Author: Kenneth Obsequio (@lash0000)
 * Date Created: Jun. 18, 2026
 ***********************************************************************************************************************************************************************/
'use strict';

const mdl_Users                  = require('../../models/users/users.mdl');
const R                          = require('../../utils/response.util');
const { uploadFile, deleteFile } = require('../../services/s3.service');
const { resolveUserAvatar }      = require('../../utils/resolveAvatar.util');

// ─── GET own profile ───────────────────────────────────────────────────────────

exports.getProfile = async (req, res) => {
  try {
    const user = await mdl_Users.findByPk(req.user.user_id, {
      attributes: { exclude: ['password', 'otp_code', 'otp_expires_at'] },
    });
    return R.success(res, 'Profile retrieved.', await resolveUserAvatar(user));
  } catch (err) {
    return R.error(res, 'Could not retrieve profile.', 500);
  }
};

// ─── PUT update own profile ────────────────────────────────────────────────────

exports.updateProfile = async (req, res) => {
  try {
    const user = await mdl_Users.findByPk(req.user.user_id);
    const { personal_info } = req.body;

    const merged = {
      ...(user.personal_info || {}),
      ...(personal_info || {}),
      name: {
        ...((user.personal_info?.name) || {}),
        ...((personal_info?.name) || {}),
      },
    };

    await user.update({ personal_info: merged });

    const updated = await mdl_Users.findByPk(req.user.user_id, {
      attributes: { exclude: ['password', 'otp_code', 'otp_expires_at'] },
    });
    return R.success(res, 'Profile updated.', await resolveUserAvatar(updated));
  } catch (err) {
    console.error('[ADMIN] updateProfile error:', err);
    return R.error(res, 'Profile update failed.', 500);
  }
};

// ─── POST upload own avatar ────────────────────────────────────────────────────

exports.uploadAvatar = async (req, res) => {
  try {
    if (!req.file) return R.error(res, 'No file provided.', 400);

    const user = await mdl_Users.findByPk(req.user.user_id);

    // Remove old avatar from S3 before replacing
    const oldKey = user.personal_info?.avatar?.uuid;
    if (oldKey) await deleteFile(oldKey).catch(() => {});

    const { url, uuid } = await uploadFile({
      buffer:       req.file.buffer,
      originalname: req.file.originalname,
      mimetype:     req.file.mimetype,
      ownerType:    'avatar',
    });

    const merged = {
      ...(user.personal_info || {}),
      avatar: {
        url,
        uuid,
        name:      req.file.originalname,
        mime_type: req.file.mimetype,
        size:      req.file.size,
      },
    };

    await user.update({ personal_info: merged });

    const updated = await mdl_Users.findByPk(req.user.user_id, {
      attributes: { exclude: ['password', 'otp_code', 'otp_expires_at'] },
    });
    return R.success(res, 'Avatar updated.', await resolveUserAvatar(updated));
  } catch (err) {
    console.error('[ADMIN] uploadAvatar error:', err);
    return R.error(res, 'Avatar upload failed.', 500);
  }
};

// ─── DELETE remove own avatar ──────────────────────────────────────────────────

exports.deleteAvatar = async (req, res) => {
  try {
    const user = await mdl_Users.findByPk(req.user.user_id);
    const key  = user.personal_info?.avatar?.uuid;
    if (!key) return R.error(res, 'No avatar to remove.', 404);

    await deleteFile(key).catch(() => {});

    const merged = { ...(user.personal_info || {}), avatar: null };
    await user.update({ personal_info: merged });

    return R.success(res, 'Avatar removed.');
  } catch (err) {
    console.error('[ADMIN] deleteAvatar error:', err);
    return R.error(res, 'Could not remove avatar.', 500);
  }
};