<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
declare(strict_types=1);

namespace addon\forum\controller;

use addon\forum\model\ForumBoard;
use addon\forum\model\ForumTopic;
use addon\forum\model\ForumReply;
use addon\forum\model\ForumMessage;
use ywxapp\model\BaseModel;
use think\facade\Db;

class Index extends ForumFrontend
{
    protected $noNeedLogin  = [];
    protected $noNeedVerify = ['*'];

    /**
     * 社区首页：版块 + 帖子流
     */
    public function index()
    {
        $boards = ForumBoard::enabledList();
        $topics = ForumTopic::listFront(0, '', 'new', 1, 20);
        $hot    = ForumTopic::listFront(0, '', 'hot', 1, 10);
        $this->attachAuthors($topics);
        $this->attachAuthors($hot);

        // 当前会员未读消息
        $unread = 0;
        if ($member = $this->member()) {
            $unread = ForumMessage::unreadCount((int) $member['uid']);
        }

        $this->assign([
            'boards' => $boards,
            'topics' => $topics,
            'hot'    => $hot,
            'unread' => $unread,
            'typeMap'=> ForumTopic::$typeMap,
        ]);
        return $this->fetch('index/index');
    }

    /**
     * 版块帖子列表
     */
    public function board($slug = '')
    {
        $board = ForumBoard::findBySlug($slug);
        if (!$board) {
            $this->assign('msg', '版块不存在');
            return $this->fetch('index/notfound');
        }
        $type  = $this->request->param('type', '');
        $order = $this->request->param('order', 'new');
        $page  = (int) $this->request->param('page', 1);
        $topics = ForumTopic::listFront((int) $board->id, $type, $order, $page, 20);
        $this->attachAuthors($topics);

        $this->assign([
            'board'  => $board,
            'topics' => $topics,
            'type'   => $type,
            'order'  => $order,
            'typeMap'=> ForumTopic::$typeMap,
        ]);
        return $this->fetch('index/board');
    }

    /**
     * 帖子详情 + 回复列表
     */
    public function topic($id = 0)
    {
        $topic = ForumTopic::findById((int) $id);
        if (!$topic || (int) $topic->status !== 1) {
            $this->assign('msg', '帖子不存在、待审核或已下架');
            return $this->fetch('index/notfound');
        }
        ForumTopic::addViews((int) $topic->id);

        $replies = ForumReply::listByTopic((int) $topic->id);
        $board   = ForumBoard::find((int) $topic->board_id);

        // 作者信息（复用会员表），带默认值避免模板内联查库
        $author = Db::name('member')->where('id', $topic->user_id)
            ->field('id,nickname,avatar,intro')->find();
        if (!$author) {
            $author = ['id' => $topic->user_id, 'nickname' => '匿名', 'avatar' => '', 'intro' => ''];
        }

        // 每条回复附带用户信息
        $uids = array_column($replies->toArray(), 'user_id');
        $users = [];
        if (!empty($uids)) {
            $users = Db::name('member')->where('id', 'in', array_unique($uids))
                ->column('nickname,avatar', 'id');
        }
        $replyList = [];
        foreach ($replies as $rp) {
            $u = $users[$rp['user_id']] ?? ['nickname' => '匿名', 'avatar' => ''];
            $replyList[] = [
                'id'        => $rp['id'],
                'user_id'   => $rp['user_id'],
                'floor'     => $rp['floor'],
                'content'   => $rp['content'],
                'create_at' => $rp['create_at'],
                'nickname'  => $u['nickname'] ?: '匿名',
                'avatar'    => $u['avatar'] ?: '',
            ];
        }

        $this->assign([
            'topic'     => $topic,
            'author'    => $author,
            'replyList' => $replyList,
            'board'     => $board,
            'related'   => \addon\forum\service\ForumSearchService::related((int) $topic->id, 6),
            'typeName'  => ForumTopic::$typeMap[$topic->type] ?? '',
        ]);
        return $this->fetch('index/topic');
    }

    /**
     * 发帖页
     */
    public function post()
    {
        if (!$this->requireLogin()) {
            return redirect('/user/login');
        }
        $boards = ForumBoard::enabledList();
        $this->assign('boards', $boards);
        $this->assign('typeMap', ForumTopic::$typeMap);
        $cfg = \ywxapp\service\AddonService::config('forum');
        $this->assign('editorHeight', (int) ($cfg['editor_height'] ?? 360));
        return $this->fetch('index/post');
    }

    /**
     * 提交发帖
     */
    public function doPost()
    {
        if (!$this->requireLogin()) {
            return $this->error('请先登录');
        }
        $member = $this->member();
        $data = $this->request->post();

        $title   = trim((string) ($data['title'] ?? ''));
        $content = trim((string) ($data['content'] ?? ''));
        $boardId = (int) ($data['board_id'] ?? 0);
        $type    = (int) ($data['type'] ?? 0);
        $lat = (float) ($data['lat'] ?? 0);
        $lng = (float) ($data['lng'] ?? 0);

        if ($title === '' || $content === '' || $boardId < 1) {
            return $this->error('请填写完整信息');
        }
        if (!isset(ForumTopic::$typeMap[$type])) {
            $type = ForumTopic::TYPE_ASK;
        }

        $needAudit = (int) config('forum.need_audit');
        $status    = $needAudit ? 0 : 1;   // 0待审 1正常
        $auditReason = '';

        // 机审（云审）：开启 need_audit 且无 AI 审核服务时，按策略直接通过/转人工
        if ($needAudit) {
            $ai = new \addon\wxchat\service\AiAuditService();
            $res = $ai->audit($title . "\n" . $content);
            if ($res['code'] === 0) {
                if (!empty($res['data']['blocked'])) {
                    // 机审命中违规：直接驳回，不进入人工队列
                    $status = -1;
                    $auditReason = '机审不通过：' . ($res['data']['reason'] ?? '内容违规');
                }
                // 机审通过：保持待审（status=0），等待人工复核
            }
            // AI 服务不可用（code!=0 且非 blocked）：维持待审，转人工队列
        }

        \addon\forum\library\ForumSchema::ensure();
        $topicId = ForumTopic::insertGetId([
            'board_id'  => $boardId,
            'user_id'   => $member['id'],
            'title'     => $title,
            'content'   => $content,
            'type'      => $type,
            'status'    => $status,
            'lat'       => $lat,
            'lng'       => $lng,
            'audit_reason' => $auditReason,
            'create_at' => time(),
            'update_at' => time(),
        ]);

        ForumBoard::incr($boardId, 'topic_count', 1);
        \addon\forum\service\ForumSearchService::sync($topicId);

        if ($status === -1) {
            return $this->success(['id' => $topicId], $auditReason);
        }
        return $this->success(['id' => $topicId], $needAudit ? '发布成功，等待审核' : '发布成功');
    }

    /**
     * 提交回复
     */
    public function doReply()
    {
        if (!$this->requireLogin()) {
            return $this->error('请先登录');
        }
        $member = $this->member();
        $data = $this->request->post();
        $topicId = (int) ($data['topic_id'] ?? 0);
        $content = trim((string) ($data['content'] ?? ''));

        if ($topicId < 1 || $content === '') {
            return $this->error('回复内容不能为空');
        }
        $topic = ForumTopic::findById($topicId);
        if (!$topic) {
            return $this->error('帖子不存在');
        }

        $floor = ForumReply::countByTopic($topicId) + 1;
        $replyId = ForumReply::insertGetId([
            'topic_id'  => $topicId,
            'user_id'   => $member['id'],
            'content'   => $content,
            'floor'     => $floor,
            'status'    => 1,
            'create_at' => time(),
            'update_at' => time(),
        ]);

        // 更新帖子回复计数 + 最后回复
        ForumTopic::where('id', $topicId)->inc('reply_count', 1)->update([
            'last_reply_id'   => $replyId,
            'last_reply_uid'  => $member['id'],
            'last_reply_time' => time(),
        ]);
        ForumBoard::incr((int) $topic->board_id, 'reply_count', 1);

        // 给帖子作者发消息（非自己）
        if ($topic->user_id != $member['id']) {
            ForumMessage::insert([
                'user_id'   => $topic->user_id,
                'from_uid'  => $member['id'],
                'type'      => 'reply',
                'topic_id'  => $topicId,
                'reply_id'  => $replyId,
                'content'   => mb_substr(strip_tags($content), 0, 120),
                'is_read'   => 0,
                'create_at' => time(),
            ]);
        }

        return $this->success(['floor' => $floor], '回复成功');
    }

    /**
     * 搜索
     */
    public function search()
    {
        $kw   = trim((string) $this->request->param('q', ''));
        $list = [];
        if ($kw !== '') {
            $list = \addon\forum\service\ForumSearchService::search($kw, (int) $this->request->param('page', 1), 20);
        }
        $this->assign('kw', $kw);
        $this->assign('list', $list);
        return $this->fetch('index/search');
    }

    /**
     * 附近帖子（GEO/LBS）：由前端定位传入 lat/lng，展示半径内帖子
     */
    public function nearby()
    {
        $lat = (float) $this->request->param('lat', 0);
        $lng = (float) $this->request->param('lng', 0);
        $radius = (float) $this->request->param('radius', 10);
        $list = \addon\forum\service\ForumSearchService::nearby($lat, $lng, $radius, 30);
        $this->assign('list', $list);
        $this->assign('lat', $lat);
        $this->assign('lng', $lng);
        $this->assign('radius', $radius);
        return $this->fetch('index/nearby');
    }

    /**
     * 批量给帖子列表（Paginator）注入 author 字段，避免模板读取不存在的关联属性
     * @param \think\Paginator $paginator
     */
    private function attachAuthors($collection)
    {
        if (!is_iterable($collection)) {
            return;
        }
        $uids = [];
        foreach ($collection as $t) {
            $uids[] = $t['user_id'] ?? ($t->user_id ?? 0);
        }
        $uids = array_filter(array_unique($uids));
        $users = [];
        if (!empty($uids)) {
            $users = Db::name('member')->where('id', 'in', $uids)
                ->column('nickname,avatar', 'id');
        }
        foreach ($collection as $t) {
            $uid = $t['user_id'] ?? ($t->user_id ?? 0);
            $u = $users[$uid] ?? ['nickname' => '匿名', 'avatar' => ''];
            $t->author = [
                'nickname' => $u['nickname'] ?: '匿名',
                'avatar'   => $u['avatar'] ?: '',
            ];
        }
    }

    /**
     * 用户主页（展示其论坛数据）
     */
    public function user($id = 0)
    {
        $user = Db::name('member')->where('id', (int) $id)->field('id,nickname,avatar,intro')->find();
        if (!$user) {
            $this->assign('msg', '用户不存在');
            return $this->fetch('index/notfound');
        }
        $topics = ForumTopic::where('user_id', (int) $id)
            ->where('status', 1)
            ->order('id desc')
            ->limit(20)->select();
        $this->assign('member', $user);
        $this->assign('topics', $topics);
        return $this->fetch('index/user');
    }
}