<?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\wxchat\controller\api;

use addon\wxchat\model\WxchatMessage;
use addon\wxchat\model\WxchatUnreadCount;
use think\facade\Db;
use think\facade\Request;
use ywxapp\controller\FrontendBase;
use ywxapp\model\MemberUser as UserModel;
use ywxapp\model\MemberProfile as ProfileModel;

/**
 * Message 类
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class Message extends FrontendBase
{
    protected $noNeedLogin = [];
    protected $noNeedVerify = ['*'];

    
    protected function initialize()
    {}

    /**
     * 发送消息（HTTP 落库，WebSocket 实时推送由 worker 处理）
     */
    public function send()
    {
        $uid          = $this->auth->model->uid;
        $receiverId   = (int) Request::post('receiver_id', 0);
        $receiverType = (int) Request::post('receiver_type', 0); // 0-单聊 1-群聊
        $content      = trim((string) Request::post('content', ''));
        $contentType  = (int) Request::post('content_type', 0);

        if (! $receiverId || $receiverId == $uid) {
            $this->error('接收者无效');
        }
        if ($content === '' && $contentType == 0) {
            $this->error('消息内容不能为空');
        }

        $msg = new WxchatMessage();
        $msg->sender_id    = $uid;
        $msg->receiver_type = $receiverType;
        $msg->receiver_id   = $receiverId;
        $msg->content       = $content;
        $msg->content_type  = $contentType;
        $msg->save();

        // 更新对方未读计数（单聊）
        if ($receiverType == 0) {
            WxchatUnreadCount::increment($receiverId, 0, $uid);
        }

        $this->success($msg->toArray(), '发送成功');
    }

    /**
     * 会话历史（单聊 / 群聊）
     */
    public function history()
    {
        $uid          = $this->auth->uid;
        $contactId    = (int) Request::get('contact_id', 0);
        $contactType  = (int) Request::get('contact_type', 0);
        $limit        = (int) Request::get('limit', 20);
        $page         = (int) Request::get('page', 1);

        if (! $contactId) {
            $this->error('会话对象无效');
        }

        $query = WxchatMessage::where('is_recalled', 0)
            ->where('receiver_type', $contactType);
        if ($contactType == 0) {
            // 单聊：取双方互发消息（修复原逻辑因外层 receiver_id 过滤而漏掉对方发来的消息）
            $query->where(function ($q) use ($uid, $contactId) {
                $q->where(function ($q) use ($uid, $contactId) {
                    $q->where('sender_id', $uid)->where('receiver_id', $contactId);
                })->whereOr(function ($q) use ($uid, $contactId) {
                    $q->where('sender_id', $contactId)->where('receiver_id', $uid);
                });
            });
        } else {
            $query->where('receiver_id', $contactId);
        }
        $list = $query->order('create_at', 'desc')
            ->paginate($limit, false, ['page' => $page]);

        // 单聊：读取后清零未读
        if ($contactType == 0) {
            WxchatUnreadCount::reset($uid, 0, $contactId);
        }

        $this->success([
            'list'  => $list->items(),
            'total' => $list->total(),
            'pages' => $list->lastPage(),
        ]);
    }

    /**
     * 未读消息列表
     */
    public function unread()
    {
        $uid = $this->auth->model->uid;
        $list = WxchatUnreadCount::where('user_id', $uid)
            ->where('unread_count', '>', 0)
            ->order('update_at', 'desc')
            ->select();
        $this->success($list);
    }

    /**
     * 会话列表（聚合单聊最新一条消息 + 未读 + 对方资料/在线状态）
     */
    public function conversations()
    {
        $uid = $this->auth->model->uid;

        $msgs = WxchatMessage::where('receiver_type', 0)
            ->where('is_recalled', 0)
            ->where(function ($q) use ($uid) {
                $q->where('sender_id', $uid)->whereOr('receiver_id', $uid);
            })
            ->order('id', 'desc')
            ->limit(1000)
            ->select();

        $convMap = [];
        $peerIds = [];
        foreach ($msgs as $m) {
            $sid  = (int) $m->sender_id;
            $rid  = (int) $m->receiver_id;
            $peer = ($sid == $uid) ? $rid : $sid;
            if (! isset($convMap[$peer])) {
                $convMap[$peer] = [
                    'peer_id'            => $peer,
                    'last_content'       => $m->content,
                    'last_content_type'  => (int) $m->content_type,
                    'last_time'          => (int) $m->create_at,
                    'last_sender_id'     => $sid,
                ];
                $peerIds[] = $peer;
            }
        }

        if (empty($peerIds)) {
            $this->success(['list' => [], 'total' => 0]);
            return;
        }

        $users     = UserModel::where('uid', 'in', $peerIds)->column('*', 'uid');
        $unread    = WxchatUnreadCount::where('user_id', $uid)
            ->where('contact_type', 0)
            ->where('contact_id', 'in', $peerIds)
            ->column('unread_count', 'contact_id');
        $onlineMap = MemberProfile::where('uid', 'in', $peerIds)->column('online_status', 'uid');

        $list = [];
        foreach ($convMap as $peer => $c) {
            $u = $users[$peer] ?? [];
            $list[] = [
                'peer_id'            => $peer,
                'nickname'           => $u['nickname'] ?? '',
                'avatar'             => $u['avatar'] ?? '',
                'online'             => ((int) ($onlineMap[$peer] ?? 0)) == 1,
                'last_content'       => $c['last_content'],
                'last_content_type'  => $c['last_content_type'],
                'last_time'          => $c['last_time'],
                'unread_count'       => (int) ($unread[$peer] ?? 0),
                'is_self'            => $c['last_sender_id'] == $uid,
            ];
        }

        usort($list, function ($a, $b) {
            return $b['last_time'] - $a['last_time'];
        });

        $this->success(['list' => $list, 'total' => count($list)]);
    }

    /**
     * 撤回消息
     */
    public function recall()
    {
        $userId   = $this->auth->model->uid;
        $messageId = (int) Request::post('message_id', 0);

        $message = WxchatMessage::find($messageId);
        if (! $message || $message->sender_id != $userId) {
            $this->error('无权撤回', 403);
        }

        $message->is_recalled = 1;
        $message->recalled_at = date('Y-m-d H:i:s');
        $message->save();

        $this->success([], '撤回成功');
    }
}