<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------

declare(strict_types=1);

namespace addon\haonav\controller;
use ywxapp\controller\FrontendBase;

use addon\haonav\model\Favorite as FavoriteModel;
use addon\haonav\model\FavoriteShare as FavoriteShareModel;
use addon\haonav\model\Configure as ConfigureModel;

/**
 * 用户云端收藏（登录后「我的导航」跨端同步）
 *
 * 认证：复用框架前台 Auth（Authorization 头或 access_token Cookie）。
 * 未登录时接口返回 code=401，前端自动回退 localStorage。
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class Favorite extends FrontendBase
{
    protected $noNeedLogin = ['*'];
    protected $noNeedVerify = ['*'];

    protected function initialize()
    {
    }

    /**
     * 当前登录用户ID，未登录返回 0
     */
    protected function uid(): int
    {
        if ($this->auth && $this->auth->isLogin) {
            $info = $this->auth->info;
            if (is_array($info)) {
                return (int)($info['id'] ?? 0);
            }
            return (int)($info->id ?? 0);
        }
        return 0;
    }

    /**
     * 登录态 + 收藏列表
     * GET /haonav/favorite/list
     */
    public function list()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('未登录', 401);
        }
        $list = FavoriteModel::where('user_id', $uid)
            ->order('sort', 'asc')
            ->order('id', 'asc')
            ->select();
        return $this->result->success($list);
    }

    /**
     * 新增收藏
     * POST /haonav/favorite/add  {link_id?,title,url,icon?}
     */
    public function add()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $url   = trim((string)$this->request->post('url', ''));
        $title = trim((string)$this->request->post('title', ''));
        if ($url === '' || $title === '') {
            return $this->result->error('参数不完整');
        }
        if (!preg_match('#^https?://#i', $url) && strpos($url, '/') !== 0) {
            return $this->result->error('网址格式不正确');
        }
        $exists = FavoriteModel::where('user_id', $uid)->where('url', $url)->find();
        if ($exists) {
            return $this->result->success([], '已在我的导航');
        }
        $maxSort = (int)FavoriteModel::where('user_id', $uid)->max('sort');
        $model = new FavoriteModel();
        $model->user_id = $uid;
        $model->link_id = (int)$this->request->post('link_id', 0);
        $model->title   = mb_substr($title, 0, 100);
        $model->url     = mb_substr($url, 0, 500);
        $model->icon    = mb_substr((string)$this->request->post('icon', ''), 0, 200);
        $model->sort    = $maxSort + 1;
        $model->save();
        return $this->result->success(['id' => $model->id], '已收藏');
    }

    /**
     * 移除收藏
     * POST /haonav/favorite/remove {id} 或 {url}
     */
    public function remove()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $id  = (int)$this->request->post('id', 0);
        $url = trim((string)$this->request->post('url', ''));
        $q = FavoriteModel::where('user_id', $uid);
        if ($id) {
            $q->where('id', $id);
        } elseif ($url !== '') {
            $q->where('url', $url);
        } else {
            return $this->result->error('参数不完整');
        }
        $q->delete();
        return $this->result->success([], '已移除');
    }

    /**
     * 保存排序
     * POST /haonav/favorite/sort {ids:[3,1,2]}
     */
    public function sort()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $ids = $this->request->post('ids', []);
        if (is_string($ids)) {
            $ids = json_decode($ids, true);
        }
        if (!is_array($ids) || !$ids) {
            return $this->result->error('参数不完整');
        }
        $sort = 1;
        foreach ($ids as $id) {
            FavoriteModel::where('user_id', $uid)->where('id', (int)$id)->update(['sort' => $sort++]);
        }
        return $this->result->success([], '已保存');
    }

    /**
     * 一次性把本地收藏合并到云端（登录后同步）
     * POST /haonav/favorite/merge {items:[{title,url,icon},...]}
     */
    public function merge()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $items = $this->request->post('items', []);
        if (is_string($items)) {
            $items = json_decode($items, true);
        }
        if (is_array($items)) {
            $maxSort = (int)FavoriteModel::where('user_id', $uid)->max('sort');
            foreach ($items as $it) {
                $url   = trim((string)($it['url'] ?? ''));
                $title = trim((string)($it['title'] ?? ''));
                if ($url === '' || $title === '') {
                    continue;
                }
                $exists = FavoriteModel::where('user_id', $uid)->where('url', $url)->find();
                if ($exists) {
                    continue;
                }
                $model = new FavoriteModel();
                $model->user_id = $uid;
                $model->link_id = (int)($it['id'] ?? 0);
                $model->title   = mb_substr($title, 0, 100);
                $model->url     = mb_substr($url, 0, 500);
                $model->icon    = mb_substr((string)($it['icon'] ?? ''), 0, 200);
                $model->sort    = ++$maxSort;
                $model->save();
            }
        }
        $list = FavoriteModel::where('user_id', $uid)->order('sort', 'asc')->order('id', 'asc')->select();
        return $this->result->success($list, '同步完成');
    }

    /**
     * 获取当前用户的收藏夹分享配置（登录）
     * GET /haonav/favorite/share
     */
    public function share()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $row = FavoriteShareModel::forUser($uid);
        return $this->result->success($this->shareData($row));
    }

    /**
     * 保存分享配置：开关 / 标题 / 重置令牌（登录）
     * POST /haonav/favorite/sharesave {enabled,title?,reset?}
     */
    public function shareSave()
    {
        $uid = $this->uid();
        if (!$uid) {
            return $this->result->error('请先登录', 401);
        }
        $row = FavoriteShareModel::forUser($uid);
        $row->enabled = (int)$this->request->post('enabled', $row->enabled) ? 1 : 0;
        $title = trim((string)$this->request->post('title', ''));
        if ($title !== '') {
            $row->title = mb_substr($title, 0, 100);
        }
        if ((int)$this->request->post('reset', 0) === 1) {
            $row->token = FavoriteShareModel::genToken();
        }
        $row->save();
        return $this->result->success($this->shareData($row), '已保存');
    }

    /**
     * 组装分享配置返回数据（含完整分享链接）
     */
    protected function shareData(FavoriteShareModel $row): array
    {
        return [
            'enabled' => (int)$row->enabled,
            'token'   => (string)$row->token,
            'title'   => (string)$row->title,
            'views'   => (int)$row->views,
            'url'     => $this->request->domain() . '/haonav/favorite/shared/' . $row->token . '.html',
        ];
    }

    /**
     * 公开的收藏夹分享页（无需登录，凭 token 访问）
     * GET /haonav/favorite/shared/:token
     */
    public function shared($token = '')
    {
        $token = trim((string)$token);
        $row = $token !== '' ? FavoriteShareModel::where('token', $token)->find() : null;

        $valid = $row && (int)$row->enabled === 1;
        $list = [];
        if ($valid) {
            $list = FavoriteModel::where('user_id', $row->user_id)
                ->order('sort', 'asc')
                ->order('id', 'asc')
                ->select();
            // 访问计数（不含所有者本人重复刷新的精确去重，简单自增即可）
            FavoriteShareModel::where('id', $row->id)->inc('views')->update();
        }

        $title = $valid ? ($row->title ?: '收藏夹分享') : '收藏夹不存在或未公开';
        $this->view->assign('valid', $valid);
        $this->view->assign('shareTitle', $title);
        $this->view->assign('list', $list);
        $this->view->assign('count', is_countable($list) ? count($list) : 0);
        $this->view->assign('seo', [
            'title'       => $title . ' - 网址导航',
            'keywords'    => '收藏夹,分享,网址导航',
            'description' => (string)ConfigureModel::getVal('seo_description', '简洁实用的网址导航'),
        ]);
        $this->view->assign('siteUrl', $this->request->domain());
        return $this->view->fetch('favorite/shared');
    }
}