<?php

namespace app\api\controller;

use think\Cache;
use think\Env;

class Wechat extends Base
{

    protected $appid;
    protected $appsecret;

    public function __construct(\think\Request $request = null)
    {
        parent::__construct($request);
        $this->appid = Env::get('wechat.appid', '');
        $this->appsecret = Env::get('wechat.appsecret', '');
    }

    /**
     * 获取微信公众号 access_token（带缓存）
     */
    private function getAccessToken()
    {
        $cacheKey = 'wechat_access_token';
        $token = Cache::get($cacheKey);
        if ($token) {
            return $token;
        }

        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->appsecret}";
        $res = json_decode(myGet($url), true);

        if (!isset($res['access_token'])) {
            return false;
        }

        Cache::set($cacheKey, $res['access_token'], $res['expires_in'] - 200);
        return $res['access_token'];
    }

    /**
     * 获取公众号图文素材列表
     *
     * @param int offset 起始位置，默认0
     * @param int count  获取数量，默认10，最大20
     */
    public function getArticleList()
    {
        $data = $this->request->param();
        $offset = isset($data['offset']) ? intval($data['offset']) : 0;
        $count = isset($data['count']) ? intval($data['count']) : 10;

        if ($count > 20) {
            $count = 20;
        }

        $accessToken = $this->getAccessToken();
        if (!$accessToken) {
            return jsonError('获取access_token失败，请检查appid和appsecret配置');
        }

        $url = "https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token={$accessToken}";
        $postData = [
            'type'   => 'news',
            'offset' => $offset,
            'count'  => $count,
        ];

        $res = json_decode(myPost1($url, $postData), true);

        if (isset($res['errcode']) && $res['errcode'] != 0) {
            return jsonError('微信接口错误: ' . ($res['errmsg'] ?? '未知错误'));
        }

        $list = [];
        if (isset($res['item'])) {
            foreach ($res['item'] as $item) {
                $articles = [];
                $newsItems = isset($item['content']['news_item']) ? $item['content']['news_item'] : [];
                foreach ($newsItems as $news) {
                    $articles[] = [
                        'title'              => $news['title'] ?? '',
                        'thumb_media_id'     => $news['thumb_media_id'] ?? '',
                        'thumb_url'          => $news['thumb_url'] ?? '',
                        'author'             => $news['author'] ?? '',
                        'digest'             => $news['digest'] ?? '',
                        'content_source_url' => $news['content_source_url'] ?? '',
                        'url'                => $news['url'] ?? '',
                    ];
                }
                $list[] = [
                    'media_id'    => $item['media_id'],
                    'update_time' => isset($item['content']['update_time']) ? date('Y-m-d H:i:s', $item['content']['update_time']) : '',
                    'articles'    => $articles,
                ];
            }
        }

        return jsonSuccess([
            'total_count' => $res['total_count'] ?? 0,
            'item_count'  => $res['item_count'] ?? 0,
            'list'        => $list,
        ]);
    }

    /**
     * 获取公众号图文素材详情
     *
     * @param string media_id 素材的media_id
     */
    public function getArticleDetail()
    {
        $data = $this->request->param();
        if (!isset($data['media_id']) || $data['media_id'] == '') {
            return jsonError('media_id不能为空');
        }

        $accessToken = $this->getAccessToken();
        if (!$accessToken) {
            return jsonError('获取access_token失败，请检查appid和appsecret配置');
        }

        $url = "https://api.weixin.qq.com/cgi-bin/material/get_material?access_token={$accessToken}";
        $postData = [
            'media_id' => $data['media_id'],
        ];

        $res = json_decode(myPost1($url, $postData), true);

        if (isset($res['errcode']) && $res['errcode'] != 0) {
            return jsonError('微信接口错误: ' . ($res['errmsg'] ?? '未知错误'));
        }

        $articles = [];
        $newsItems = isset($res['news_item']) ? $res['news_item'] : [];
        foreach ($newsItems as $news) {
            $articles[] = [
                'title'              => $news['title'] ?? '',
                'thumb_media_id'     => $news['thumb_media_id'] ?? '',
                'thumb_url'          => $news['thumb_url'] ?? '',
                'author'             => $news['author'] ?? '',
                'digest'             => $news['digest'] ?? '',
                'content'            => $news['content'] ?? '',
                'content_source_url' => $news['content_source_url'] ?? '',
                'url'                => $news['url'] ?? '',
            ];
        }

        return jsonSuccess([
            'media_id' => $data['media_id'],
            'articles' => $articles,
        ]);
    }

    /**
     * 获取已发布的文章列表（发布接口）
     *
     * @param int offset 起始位置，默认0
     * @param int count  获取数量，默认10，最大20
     * @param int no_content 1=不返回content字段，0=返回，默认0
     */
    public function getPublishedArticles()
    {
        $data = $this->request->param();
        $offset = isset($data['offset']) ? intval($data['offset']) : 0;
        $count = isset($data['count']) ? intval($data['count']) : 10;
        $noContent = isset($data['no_content']) ? intval($data['no_content']) : 0;

        if ($count > 20) {
            $count = 20;
        }

        $accessToken = $this->getAccessToken();
        if (!$accessToken) {
            return jsonError('获取access_token失败，请检查appid和appsecret配置');
        }

        $url = "https://api.weixin.qq.com/cgi-bin/freepublish/batchget?access_token={$accessToken}";
        $postData = [
            'offset'     => $offset,
            'count'      => $count,
            'no_content' => $noContent,
        ];

        $res = json_decode(myPost1($url, $postData), true);

        if (isset($res['errcode']) && $res['errcode'] != 0) {
            return jsonError('微信接口错误: ' . ($res['errmsg'] ?? '未知错误'));
        }

        $list = [];
        if (isset($res['item'])) {
            foreach ($res['item'] as $item) {
                $articles = [];
                $newsItems = isset($item['content']['news_item']) ? $item['content']['news_item'] : [];
                foreach ($newsItems as $news) {
                    $article = [
                        'title'              => $news['title'] ?? '',
                        'author'             => $news['author'] ?? '',
                        'digest'             => $news['digest'] ?? '',
                        'thumb_url'          => $news['thumb_url'] ?? '',
                        'content_source_url' => $news['content_source_url'] ?? '',
                        'url'                => $news['url'] ?? '',
                        'is_deleted'         => $news['is_deleted'] ?? false,
                    ];
                    if (!$noContent) {
                        $article['content'] = $news['content'] ?? '';
                    }
                    $articles[] = $article;
                }
                $list[] = [
                    'article_id'  => $item['article_id'] ?? '',
                    'update_time' => isset($item['content']['update_time']) ? date('Y-m-d H:i:s', $item['content']['update_time']) : '',
                    'articles'    => $articles,
                ];
            }
        }

        return jsonSuccess([
            'total_count' => $res['total_count'] ?? 0,
            'item_count'  => $res['item_count'] ?? 0,
            'list'        => $list,
        ]);
    }

    /**
     * 获取已发布的文章详情
     *
     * @param string article_id 发布文章的article_id
     */
    public function getPublishedArticleDetail()
    {
        $data = $this->request->param();
        if (!isset($data['article_id']) || $data['article_id'] == '') {
            return jsonError('article_id不能为空');
        }

        $accessToken = $this->getAccessToken();
        if (!$accessToken) {
            return jsonError('获取access_token失败，请检查appid和appsecret配置');
        }

        $url = "https://api.weixin.qq.com/cgi-bin/freepublish/getarticle?access_token={$accessToken}";
        $postData = [
            'article_id' => $data['article_id'],
        ];

        $res = json_decode(myPost1($url, $postData), true);

        if (isset($res['errcode']) && $res['errcode'] != 0) {
            return jsonError('微信接口错误: ' . ($res['errmsg'] ?? '未知错误'));
        }

        $articles = [];
        $newsItems = isset($res['news_item']) ? $res['news_item'] : [];
        foreach ($newsItems as $news) {
            $articles[] = [
                'title'              => $news['title'] ?? '',
                'author'             => $news['author'] ?? '',
                'digest'             => $news['digest'] ?? '',
                'thumb_url'          => $news['thumb_url'] ?? '',
                'content'            => $news['content'] ?? '',
                'content_source_url' => $news['content_source_url'] ?? '',
                'url'                => $news['url'] ?? '',
                'is_deleted'         => $news['is_deleted'] ?? false,
            ];
        }

        return jsonSuccess([
            'article_id' => $data['article_id'],
            'articles'   => $articles,
        ]);
    }
}