// Vue 3 Application
const { createApp } = Vue;

createApp({
    data() {
        return {
            messages: [],
            userInput: '',
            loading: false,
            sessionId: null,
            charts: {}
        };
    },
    mounted() {
        this.sessionId = this.generateSessionId();
        this.autoResizeTextarea();
    },
    methods: {
        async sendMessage() {
            if (!this.userInput.trim() || this.loading) return;

            const message = this.userInput.trim();
            this.userInput = '';

            // Add user message
            this.messages.push({
                role: 'user',
                content: message,
                timestamp: new Date()
            });

            this.$nextTick(() => {
                this.scrollToBottom();
                this.autoResizeTextarea();
            });

            this.loading = true;

            try {
                const response = await fetch('/api/chat/message', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({
                        message: message,
                        session_id: this.sessionId
                    })
                });

                if (!response.ok) {
                    throw new Error('请求失败');
                }

                const data = await response.json();

                // Add assistant message
                const assistantMessage = {
                    role: 'assistant',
                    content: data.message,
                    timestamp: new Date(),
                    metadata: data.metadata
                };

                this.messages.push(assistantMessage);

                // Render chart if needed
                if (data.metadata && data.metadata.type === 'chart') {
                    this.$nextTick(() => {
                        const index = this.messages.length - 1;
                        this.renderChart(index, data.metadata.data);
                    });
                }

                this.$nextTick(() => {
                    this.scrollToBottom();
                });

            } catch (error) {
                console.error('发送消息失败:', error);
                this.messages.push({
                    role: 'assistant',
                    content: '抱歉，发送消息失败，请稍后重试。',
                    timestamp: new Date()
                });
            } finally {
                this.loading = false;
            }
        },

        renderMarkdown(content) {
            if (!content) return '';

            // Configure marked options
            marked.setOptions({
                breaks: true,
                gfm: true,
                headerIds: false,
                mangle: false
            });

            return marked.parse(content);
        },

        renderChart(index, data) {
            const chartId = `chart-${index}`;
            const container = document.getElementById(chartId);

            if (!container || !data.kline_data) return;

            const chart = LightweightCharts.createChart(container, {
                width: container.clientWidth,
                height: 400,
                layout: {
                    background: { color: '#000000' },
                    textColor: '#a0a0a0'
                },
                grid: {
                    vertLines: { color: '#1a1a1a' },
                    horzLines: { color: '#1a1a1a' }
                },
                timeScale: {
                    borderColor: '#333333',
                    timeVisible: true
                },
                rightPriceScale: {
                    borderColor: '#333333'
                }
            });

            const candlestickSeries = chart.addCandlestickSeries({
                upColor: '#00ff41',
                downColor: '#ff0040',
                borderVisible: false,
                wickUpColor: '#00ff41',
                wickDownColor: '#ff0040'
            });

            const klineData = data.kline_data.map(item => ({
                time: item.trade_date,
                open: item.open,
                high: item.high,
                low: item.low,
                close: item.close
            }));

            candlestickSeries.setData(klineData);

            if (data.volume_data) {
                const volumeSeries = chart.addHistogramSeries({
                    color: '#00ff4140',
                    priceFormat: {
                        type: 'volume'
                    },
                    priceScaleId: ''
                });

                const volumeData = data.volume_data.map(item => ({
                    time: item.trade_date,
                    value: item.vol,
                    color: item.close >= item.open ? '#00ff4140' : '#ff004040'
                }));

                volumeSeries.setData(volumeData);
            }

            chart.timeScale().fitContent();

            this.charts[chartId] = chart;

            // Handle resize
            window.addEventListener('resize', () => {
                if (this.charts[chartId]) {
                    chart.applyOptions({ width: container.clientWidth });
                }
            });
        },

        scrollToBottom() {
            const container = this.$refs.chatContainer;
            if (container) {
                setTimeout(() => {
                    container.scrollTop = container.scrollHeight;
                }, 100);
            }
        },

        autoResizeTextarea() {
            const textarea = this.$refs.textarea;
            if (textarea) {
                textarea.style.height = 'auto';
                textarea.style.height = Math.min(textarea.scrollHeight, 120) + 'px';
            }
        },

        generateSessionId() {
            return 'session_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
        },

        copyWechat() {
            const wechatId = 'aaronlzhou';

            // 使用现代的 Clipboard API
            if (navigator.clipboard && navigator.clipboard.writeText) {
                navigator.clipboard.writeText(wechatId).then(() => {
                    this.showCopyNotification();
                }).catch(err => {
                    console.error('复制失败:', err);
                    this.fallbackCopy(wechatId);
                });
            } else {
                this.fallbackCopy(wechatId);
            }
        },

        fallbackCopy(text) {
            // 降级方案：使用传统方法
            const textarea = document.createElement('textarea');
            textarea.value = text;
            textarea.style.position = 'fixed';
            textarea.style.opacity = '0';
            document.body.appendChild(textarea);
            textarea.select();

            try {
                document.execCommand('copy');
                this.showCopyNotification();
            } catch (err) {
                console.error('复制失败:', err);
            }

            document.body.removeChild(textarea);
        },

        showCopyNotification() {
            // 创建临时提示
            const notification = document.createElement('div');
            notification.textContent = '已复制微信号';
            notification.style.cssText = `
                position: fixed;
                bottom: 80px;
                left: 50%;
                transform: translateX(-50%);
                background: #00ff41;
                color: #000000;
                padding: 8px 16px;
                border-radius: 2px;
                font-size: 13px;
                font-weight: 500;
                z-index: 10000;
                animation: fadeInOut 2s ease;
            `;

            document.body.appendChild(notification);

            setTimeout(() => {
                document.body.removeChild(notification);
            }, 2000);
        }
    },

    watch: {
        userInput() {
            this.$nextTick(() => {
                this.autoResizeTextarea();
            });
        }
    }
}).mount('#app');