import React, { useState } from 'react';
import { Button, Card, Spin } from 'antd';
import type { ChatItem, Feedbacktype, ThoughtItem, VisionFile } from '../../types/dify_chat';
import { CHAT_CONFIG } from '../../config/chat';
import Markdown from './markdown';
import ThoughtProcess from './thought-process';
import { Dayjs } from 'dayjs';
import '../../styles/components/chat-with-llm/chat-message.css';

interface ChatMessageProps {
    message: ChatItem;
    onFeedback?: (messageId: string, feedback: Feedbacktype) => void;
    isResponding?: boolean;
    onRegenerate?: (messageId: string) => void;
}

/**
 * 聊天消息组件
 */
export default function ChatMessage({
    message,
    onFeedback,
    isResponding = false,
    onRegenerate
}: ChatMessageProps) {
    const [feedback, setFeedback] = useState<'like' | 'dislike' | null>(
        message.feedback?.rating || null
    );

    const { id, content, isAnswer, agent_thoughts, message_files, isOpeningStatement, suggestedQuestions, more } = message;
    const isAgentMode = !!agent_thoughts && agent_thoughts.length > 0;

    /**
     * 处理反馈
     */
    const handleFeedback = async (type: 'like' | 'dislike') => {
        if (!id || id.startsWith('placeholder-') || id.startsWith('question-') || id.startsWith('opening-'))
            return;

        // 如果已经选择了相同的反馈，则取消选择
        const newFeedback = feedback === type ? null : type;
        setFeedback(newFeedback);

        await onFeedback?.(id, {
            rating: newFeedback,
        });
    };

    /**
     * 渲染AI回答内容
     */
    const renderAnswerContent = () => {
        // console.log('🎨 渲染AI回答内容:', { content, isResponding, isAgentMode });

        // 如果正在响应且没有内容
        if (isResponding && (isAgentMode ? (!content && (agent_thoughts || []).filter(item => !!item.thought || !!item.tool).length === 0) : !content)) {
            return (
                <div className="responding-indicator">
                    <Spin size="small" />
                    <span>AI 正在思考...</span>
                </div>
            );
        }

        // Agent模式（有思考过程）
        if (isAgentMode) {
            return (
                <div className="space-y-3">
                    {agent_thoughts?.map((thought, index) => (
                        <div key={index}>
                            {thought.thought && (
                                <div className={isResponding && index === agent_thoughts.length - 1 ? 'streaming-text' : ''}>
                                    <Markdown content={thought.thought} />
                                </div>
                            )}
                            {thought.tool && (
                                <ThoughtProcess
                                    thought={thought}
                                    isFinished={!!thought.observation || !isResponding}
                                />
                            )}
                        </div>
                    ))}
                </div>
            );
        }

        // 普通模式 - 恢复Markdown渲染
        return (
            <div>
                <div className={isResponding ? 'streaming-text' : ''}>
                    <Markdown content={content} />
                </div>
            </div>
        );
    };

    /**
     * 渲染建议问题
     */
    const renderSuggestedQuestions = () => {
        if (!suggestedQuestions || suggestedQuestions.length === 0) return null;

        return (
            <div className="suggested-questions">
                <div className="text-sm text-gray-500 mb-2">建议问题：</div>
                <div className="flex flex-wrap gap-2">
                    {suggestedQuestions.map((question, index) => (
                        <Button
                            key={index}
                            size="small"
                            type="dashed"
                            className="question-button text-left"
                            onClick={() => {
                                // 这里可以添加点击建议问题的处理逻辑
                                // console.log('Suggested question clicked:', question);
                            }}
                        >
                            {question}
                        </Button>
                    ))}
                </div>
            </div>
        );
    };

    /**
     * 渲染消息元信息
     */
    const renderMessageMeta = () => {
        if (!more) return null;

        return (
            <div className="message-timestamp">
                {more.time && <span>时间: {more.time}</span>}
                {more.tokens && <span className="ml-2">Token: {more.tokens}</span>}
                {more.latency && <span className="ml-2">延迟: {more.latency}</span>}
            </div>
        );
    };

    // 如果是开场白，特殊处理
    if (isOpeningStatement) {
        return (
            <div className="chat-message">
                <Card className="message-card assistant" size="small">
                    <div className="flex items-start gap-3">
                        <div className="flex-1">
                            <Markdown content={content} />
                            {renderSuggestedQuestions()}
                        </div>
                    </div>
                </Card>
            </div>
        );
    }

    return (
        <div className="chat-message">
            <div className={`flex ${isAnswer ? 'justify-start' : 'justify-end'} mb-2`}>
                <div className={`message-card ${isAnswer ? 'assistant' : 'user'}`}>
                    <Card size="small" className="shadow-sm">
                        <div className="flex items-start gap-2">
                            {/* 消息内容 */}
                            <div className="flex-1 min-w-0">
                                {isAnswer ? renderAnswerContent() : (
                                    <div>
                                        <Markdown content={content} />
                                        {/* {renderImages(message_files)} */}
                                    </div>
                                )}
                            </div>
                        </div>
                    </Card>
                </div>
            </div>
        </div>
    );
}