<?php

namespace app\api\controller\plus\business\chat;

use app\api\controller\Controller;
use app\api\model\plus\business\chat\Chat as ChatModel;
use app\api\model\plus\business\chat\Conversation as ConversationModel;
use app\api\model\plus\business\chat\Participant;
use app\api\model\user\User as UserModel;
use app\common\model\plus\business\Business as BusinessModel;

/**
 * 名片聊天控制器
 */
class Chat extends Controller
{
    /**
     * 发送消息
     */
    public function sendMessage()
    {
        $user = $this->getUser();
        $userId = $user['user_id'];
        $conversationId = $this->request->post('conversation_id/d', 0);
        $businessCardId = $this->request->post('business_card_id/d', 0);
        $content = $this->request->post('content/s', '');
        
        if (empty($content)) {
                return $this->renderError('消息内容不能为空');
        }
        
        // 如果没有会话ID，根据名片ID创建会话
        if (empty($conversationId) && !empty($businessCardId)) {
            $conversationModel = new ConversationModel();
            
            // 获取名片信息
            $businessModel = new BusinessModel();
            $businessCard = $businessModel->where('business_card_id', $businessCardId)->find();
            
            if (!$businessCard) {
                return $this->renderError('名片不存在');
            }
            
            // 创建会话，参与者包括当前用户和名片所有者
            $participants = [$userId, $businessCard->user_id];
            $conversationId = $conversationModel->createConversation($businessCardId, $participants);
            
            if (!$conversationId) {
                return $this->renderError('创建会话失败');
            }
        }
        
        if (empty($conversationId)) {
                return $this->renderError('会话ID不能为空');
        }
        
        $chatModel = new ChatModel();
        $result = $chatModel->sendMessage($conversationId, $userId, $content);
        
        if ($result) {
            // 更新会话时间
            $conversationModel = new ConversationModel();
            $conversationModel->updateConversationTime($conversationId);
            
            // 获取刚发送的消息
            $message = $chatModel->with(['sender'])->find($chatModel->chat_id);
            
            return $this->renderSuccess('发送成功', $message ? $message->toArray() : []);
        } else {
            return $this->renderError('发送失败');
        }
    }
    
    /**
     * 获取会话消息列表
     */
    public function getMessages()
    {
        $param=request()->param();
        $user = $this->getUser();
        $userId = $user['user_id'];
        if (empty($param['conversation_id']) && !empty($param['business_card_id'])) {
            $conversationModel = new ConversationModel();
            $conversation = $conversationModel->getConversationByBusinessCard($param['business_card_id']);
            if ($conversation) {
                $param['conversation_id'] = $conversation['conversation_id'];
            }
        }
        
        if (empty($param['conversation_id'])) {
            return $this->renderError('会话不存在');
        }
        
        $chatModel = new ChatModel();
        $messages = $chatModel->getMessages($param);
        $hasParticipant = Participant::where('conversation_id', $param['conversation_id'])
            ->where('user_id','<>', $userId)
            ->find();
        $heUser=(new UserModel())->detail($hasParticipant['user_id']);
        $card=(new BusinessModel())->where('user_id',$hasParticipant['user_id'])->where('is_default',1)->find();

        return $this->renderSuccess('获取成功', compact('messages','heUser','card'));
    }
    
    /**
     * 获取会话列表
     */
    public function getConversations()
    {
        $param=request()->param();
        $user = $this->getUser();
        $param['user_id'] = $user['user_id'];
        
        
        $conversationModel = new ConversationModel();
        $conversations = $conversationModel->getUserConversations($param);
        
        // 为每个会话添加未读消息数量
        $chatModel = new ChatModel();
        foreach ($conversations as &$conversation) {
            $conversation['unread_count'] = $chatModel->getUnreadCount($conversation['conversation_id'], $param['user_id']);
            
            // 获取最后一条消息
            if (!empty($conversation['messages'])) {
                $conversation['last_message'] = end($conversation['messages']);
            }
        }
        
        return $this->renderSuccess('获取成功', compact('conversations'));
    }
    
    /**
     * 标记消息为已读
     */
    public function markAsRead()
    {
        $user = $this->getUser();
        $userId = $user['user_id'];
        
        $chatId = $this->request->post('chat_id/d', 0);
        $conversationId = $this->request->post('conversation_id/d', 0);
        
        if (empty($chatId) && empty($conversationId)) {
            return $this->renderError('参数错误');
        }
        
        $chatModel = new ChatModel();
        
        if (!empty($chatId)) {
            // 标记单条消息为已读
            $result = $chatModel->markAsRead($chatId, $userId);
            $error=$chatModel->getError();
        } else {
            $chatDate=$chatModel->where('conversation_id',$conversationId)->where('sender_id','<>',$userId)->find();
            if (empty($chatDate)){
                return $this->renderSuccess('标记成功');
            }
            // 标记整个会话为已读
            $participantModel = new Participant();
            $result = $participantModel->markConversationAsRead($conversationId, $chatDate['sender_id']);
            // 更新会话中所有消息的已读状态
            if ($result) {
                $chatModel->where('conversation_id', $conversationId)
                    ->where('sender_id', '<>', $userId)
                    ->where('is_read', 0)
                    ->update([
                        'is_read' => 1,
                        'read_time' => time(),
                        'update_time' => time()
                    ]);
            }
            $error=$participantModel->getError();
        }
        
        if ($result) {
            return $this->renderSuccess('标记成功');
        } else {
            return $this->renderError('标记失败'.$error);
        }
    }
    
    /**
     * 根据名片ID获取或创建会话
     */
    public function getOrCreateConversation()
    {
        $user = $this->getUser();
        $userId = $user['user_id'];
        
        $businessCardId = $this->request->post('business_card_id/d', 0);
        
        if (empty($businessCardId)) {
            return $this->renderError('名片ID不能为空');
        }
        
        // 获取名片信息
        $businessModel = new BusinessModel();
        $businessCard = $businessModel->where('business_card_id', $businessCardId)->find();
        
        if (!$businessCard) {
            return $this->renderError('名片不存在');
        }
        if ($businessCard['user_id'] == $userId) {
            return $this->renderError('不能与自己建立会话');
        }
        
        $conversationModel = new ConversationModel();
        
        // 检查是否已存在会话
        $conversation = $conversationModel->getConversationByBusinessCard($businessCardId);
        
        if (!$conversation) {

            // 创建新会话
            $participants = [$userId, $businessCard['user_id']];
            $conversationId = $conversationModel->createConversation($businessCardId, $participants);
            if ($conversationId) {
                $conversation = $conversationModel->getConversationByBusinessCard($businessCardId);
            }
        }
        
        if ($conversation) {
            // 添加未读消息数量
            $chatModel = new ChatModel();
            $conversation['unread_count'] = $chatModel->getUnreadCount($conversation['conversation_id'], $userId);
            
            return $this->renderSuccess('获取成功', compact('conversation'));
        } else {
            return $this->renderError('创建会话失败');
        }
    }
}