// Survey renderer - 使用JSON数据渲染页面
class SurveyRenderer {
    constructor() {
        this.data = null;
        this.init();
    }

    async init() {
        try {
            // 从URL查询参数获取ID
            const urlParams = new URLSearchParams(window.location.search);
            const id = urlParams.get('id');
            
            if (!id) {
                throw new Error('缺少报告ID参数');
            }
            
            // 调用本地API获取数据
            const response = await fetch(`/api/report/${id}`, {
                method: 'GET',
                headers: {
                    'Content-Type': 'application/json'
                }
            });
            
            if (!response.ok) {
                throw new Error(`API请求失败: ${response.status}`);
            }
            
            this.data = await response.json();
            
            // 渲染页面
            this.render();
        } catch (error) {
            console.error('加载数据失败:', error);
            document.getElementById('content').innerHTML = `
                <div style="text-align: center; padding: 50px; max-width: 600px; margin: 0 auto;">
                    <div style="background: #fff9f7; border-radius: 12px; padding: 30px; box-shadow: 0 4px 20px rgba(255, 126, 95, 0.1); border-left: 4px solid #ff7e5f;">
                        <h3 style="color: #ff7e5f; margin-bottom: 20px;">⚠️ 报告生成失败</h3>
                        <p style="color: #666; margin-bottom: 25px; line-height: 1.6;">${error.message}</p>
                        <div style="display: flex; gap: 15px; justify-content: center; flex-wrap: wrap;">
                            <a href="/" style="background: linear-gradient(135deg, #ff7e5f, #feb47b); color: white; padding: 12px 24px; border-radius: 8px; text-decoration: none; font-weight: 600; transition: transform 0.2s; box-shadow: 0 4px 15px rgba(255, 126, 95, 0.3);">
                                返回首页
                            </a>
                            <button onclick="checkRegenerationOptions()" style="background: linear-gradient(135deg, #4a90e2, #357abd); color: white; padding: 12px 24px; border-radius: 8px; border: none; font-weight: 600; cursor: pointer; transition: transform 0.2s; box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);">
                                检查可重新生成的报告
                            </button>
                        </div>
                    </div>
                    <div id="regeneration-options" style="margin-top: 20px; display: none;">
                        <!-- 重新生成选项将在这里显示 -->
                    </div>
                </div>
            `;
        }
    }

    render() {
        // 设置固定页面标题
        const fixedTitle = "尚逸基石学科能力测评报告";
        document.getElementById('page-title').textContent = fixedTitle;
        document.getElementById('report-title').textContent = fixedTitle;
        
        if (this.data.footer && this.data.footer.copyright) {
            document.getElementById('footer-text').textContent = this.data.footer.copyright;
        }
        
        // 获取report数据
        const report = this.data.report;
        
        // 渲染内容
        const content = document.getElementById('content');
        content.innerHTML = `
            ${this.renderOverview(this.data)}
            ${this.renderErrorAnalysis(report.errorAnalysis)}
            ${this.renderKnowledgeAnalysis(report.knowledgeAnalysis)}
            ${this.renderCognitiveAnalysis(report.cognitiveAnalysis)}
            ${this.renderLearningPlan(report.learningPlan)}
        `;
        
        // 渲染雷达图
        this.renderRadarChart(report.radarData);
    }

    renderOverview(data) {
        const report = data.report;
        return `
            <div class="overview-section">
                <div class="overview-grid">
                    ${this.renderStudentInfo(data.studentInfo)}
                    ${this.renderCoreDashboard(report.summaryData)}
                </div>
            </div>
        `;
    }

    renderStudentInfo(studentInfo) {
        return `
            <div class="student-info">
                <h3>📋 学员信息概览</h3>
                <div class="info-grid">
                    <div class="info-item">
                        <span class="info-label">姓名</span>
                        <span class="info-value">${studentInfo.name}</span>
                    </div>
                    <div class="info-item">
                        <span class="info-label">测评时间</span>
                        <span class="info-value">${studentInfo.testDate}</span>
                    </div>
                    <div class="info-item">
                        <span class="info-label">测评科目</span>
                        <span class="info-value">${studentInfo.subject}</span>
                    </div>
                    <div class="info-item">
                        <span class="info-label">学校</span>
                        <span class="info-value">${studentInfo.school}</span>
                    </div>
                </div>
            </div>
        `;
    }

    renderCoreDashboard(summaryData) {
        return `
            <div class="core-dashboard">
                <h3>📊 核心数据看板</h3>
                <div class="data-cards">
                    <div class="data-card">
                        <h4>总分/等级</h4>
                        <div class="value">${summaryData.totalScore}</div>
                        <div class="subtitle">${summaryData.level}</div>
                    </div>
                    <div class="data-card">
                        <h4>得分率</h4>
                        <div class="value">${summaryData.scoreRate}</div>
                        <div class="subtitle">${summaryData.scoreRateDescription}</div>
                    </div>
                    <div class="data-card">
                        <h4>群体位置</h4>
                        <div class="value">${summaryData.groupPosition}</div>
                        <div class="subtitle">${summaryData.groupPositionDescription}</div>
                    </div>
                </div>
                
                <div class="ai-summary">
                    <h4>专家点评</h4>
                    <p>${summaryData.summary}</p>
                </div>
                
                <div class="radar-chart-container">
                    <h4>五维能力雷达图</h4>
                    <div class="radar-chart">
                        <canvas id="radarChart" width="500" height="500"></canvas>
                    </div>
                </div>
            </div>
        `;
    }

    renderErrorAnalysis(errorAnalysis) {
        return `
            <div class="error-section">
                <h2 class="section-title">${errorAnalysis.title}</h2>
                
                <div class="error-list">
                    ${errorAnalysis.errors.map(error => `
                        <div class="error-item">
                            <div class="error-header">
                                <div class="error-title">${error.questionNumber} ${error.questionTitle}</div>
                                <div class="error-type">${error.errorType}</div>
                            </div>
                            <div class="error-analysis">
                                <strong>原题核心考查点：</strong>${error.corePoint}<br>
                                <strong>学生错误选项：</strong>${error.wrongOption}<br>
                                <strong>正确选项：</strong>${error.correctOption}<br>
                                <strong>错题分析：</strong>${error.analysis}<br>
                                <strong>正确思路引导：</strong>${error.guidance}
                            </div>
                        </div>
                    `).join('')}
                </div>
                
                <h3 style="color: #2d5a3d; margin-top: 30px; margin-bottom: 15px;">${errorAnalysis.tagLibrary.title}</h3>
                <div class="tag-library">
                    ${errorAnalysis.tagLibrary.tags.map(tag => `
                        <div class="tag-item">
                            <h4>${tag.emoji} ${tag.name}</h4>
                            <p>${tag.description}</p>
                        </div>
                    `).join('')}
                </div>
            </div>
        `;
    }

    renderKnowledgeAnalysis(knowledgeAnalysis) {
        return `
            <div class="knowledge-section">
                <h2 class="section-title">${knowledgeAnalysis.title}</h2>
                
                <div class="chapter-grid">
                    ${knowledgeAnalysis.chapters.map(chapter => `
                        <div class="chapter-card ${chapter.type === 'excellent' ? 'excellent' : chapter.type === 'good' ? 'good' : 'needs-work'}">
                            <h4>${chapter.title}</h4>
                            <div class="chapter-score">${chapter.score}</div>
                            <p class="chapter-description">${chapter.description}</p>
                            <p style="font-size: 12px; color: #666; margin-top: 5px;">${chapter.note}</p>
                        </div>
                    `).join('')}
                </div>
            </div>
        `;
    }

    renderCognitiveAnalysis(cognitiveAnalysis) {
        return `
            <div class="cognitive-section">
                <h2 class="section-title">${cognitiveAnalysis.title}</h2>
                
                <div class="cognitive-grid">
                    ${cognitiveAnalysis.dimensions.map(dimension => `
                        <div class="cognitive-item">
                            <h4>${dimension.emoji} ${dimension.name}</h4>
                            <div class="cognitive-score">${dimension.score}</div>
                            <p class="cognitive-description">${dimension.description}</p>
                        </div>
                    `).join('')}
                </div>
                
                <div style="margin-top: 25px; padding: 20px; background: #fff8f3; border-radius: 8px; border-left: 4px solid #ff7e5f; border-top: 1px solid rgba(255, 126, 95, 0.2);">
                    <h4 style="color: #2d5a3d; margin-bottom: 10px; font-weight: 600;">${cognitiveAnalysis.behaviorInsight.title}</h4>
                    <p style="color: #8b5a2b; line-height: 1.6;">${cognitiveAnalysis.behaviorInsight.content}</p>
                </div>
            </div>
        `;
    }

    renderLearningPlan(learningPlan) {
        return `
            <div class="learning-section">
                <h2 class="section-title">${learningPlan.title}</h2>
                
                <div class="plan-cards">
                    ${learningPlan.plans.map(plan => `
                        <div class="plan-card ${plan.type}">
                            <h3>${plan.emoji} ${plan.title}</h3>
                            <p style="color: #666; margin-bottom: 15px;"><strong>目标：</strong>${plan.goal}</p>
                            
                            ${plan.sections.map(section => `
                                <h4>${section.title}</h4>
                                <ul>
                                    ${section.items.map(item => `<li>${item}</li>`).join('')}
                                </ul>
                            `).join('')}
                        </div>
                    `).join('')}
                </div>
                
                <div class="parent-advice">
                    <h3>${learningPlan.parentAdvice.emoji} ${learningPlan.parentAdvice.title}</h3>
                    <ul>
                        ${learningPlan.parentAdvice.advice.map(item => `<li>${item}</li>`).join('')}
                    </ul>
                </div>
            </div>
        `;
    }

  
    renderRadarChart(radarData) {
        const canvas = document.getElementById('radarChart');
        if (!canvas) return;
        
        // 根据屏幕大小调整canvas尺寸
        const containerWidth = canvas.parentElement.offsetWidth;
        const maxSize = Math.min(containerWidth, 500);
        const size = window.innerWidth < 768 ? Math.min(containerWidth, 300) : maxSize;
        
        canvas.width = size;
        canvas.height = size;
        
        const ctx = canvas.getContext('2d');
        const centerX = canvas.width / 2;
        const centerY = canvas.height / 2;
        const radius = size * 0.32; // 响应式半径
        
        // 绘制雷达图
        function drawRadarChart() {
            // 清空画布
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            
            // 绘制网格
            ctx.strokeStyle = '#e0e0e0';
            ctx.lineWidth = 1;
            
            for (let i = 1; i <= 5; i++) {
                ctx.beginPath();
                const r = radius * i / 5;
                for (let j = 0; j < 5; j++) {
                    const angle = (Math.PI * 2 / 5) * j - Math.PI / 2;
                    const x = centerX + r * Math.cos(angle);
                    const y = centerY + r * Math.sin(angle);
                    if (j === 0) {
                        ctx.moveTo(x, y);
                    } else {
                        ctx.lineTo(x, y);
                    }
                }
                ctx.closePath();
                ctx.stroke();
            }
            
            // 绘制轴线
            for (let i = 0; i < 5; i++) {
                const angle = (Math.PI * 2 / 5) * i - Math.PI / 2;
                ctx.beginPath();
                ctx.moveTo(centerX, centerY);
                ctx.lineTo(centerX + radius * Math.cos(angle), centerY + radius * Math.sin(angle));
                ctx.stroke();
            }
            
            // 绘制数据区域
            ctx.beginPath();
            ctx.fillStyle = 'rgba(255, 126, 95, 0.25)';
            ctx.strokeStyle = '#ff7e5f';
            ctx.lineWidth = 2;
            
            for (let i = 0; i < 5; i++) {
                const angle = (Math.PI * 2 / 5) * i - Math.PI / 2;
                const value = radarData.abilities[i].value / 100;
                const x = centerX + radius * value * Math.cos(angle);
                const y = centerY + radius * value * Math.sin(angle);
                if (i === 0) {
                    ctx.moveTo(x, y);
                } else {
                    ctx.lineTo(x, y);
                }
            }
            ctx.closePath();
            ctx.fill();
            ctx.stroke();
            
            // 绘制数据点
            for (let i = 0; i < 5; i++) {
                const angle = (Math.PI * 2 / 5) * i - Math.PI / 2;
                const value = radarData.abilities[i].value / 100;
                const x = centerX + radius * value * Math.cos(angle);
                const y = centerY + radius * value * Math.sin(angle);
                
                // 外圈橙色
                ctx.beginPath();
                ctx.fillStyle = '#ff7e5f';
                ctx.arc(x, y, 5, 0, Math.PI * 2);
                ctx.fill();
                
                // 内圈深绿
                ctx.beginPath();
                ctx.fillStyle = '#2d5a3d';
                ctx.arc(x, y, 3, 0, Math.PI * 2);
                ctx.fill();
            }
            
            // 绘制标签 - 响应式字体大小
            const fontSize = window.innerWidth < 768 ? 10 : 13;
            const labelOffset = window.innerWidth < 768 ? 15 : 20;
            const lineHeight = window.innerWidth < 768 ? 5 : 7;
            
            ctx.fillStyle = '#333';
            ctx.font = `${fontSize}px Microsoft YaHei`;
            
            for (let i = 0; i < 5; i++) {
                const angle = (Math.PI * 2 / 5) * i - Math.PI / 2;
                const labelRadius = radius + labelOffset;
                const x = centerX + labelRadius * Math.cos(angle);
                const y = centerY + labelRadius * Math.sin(angle);
                
                // 根据角度调整文本对齐方式
                if (angle < -Math.PI / 2 || angle > Math.PI / 2) {
                    ctx.textAlign = 'right';
                } else {
                    ctx.textAlign = 'left';
                }
                
                // 智能换行处理
                const name = radarData.abilities[i].name;
                if (name.includes('与')) {
                    const lines = name.split('与');
                    // 第一行：第一个词 + "与"
                    ctx.fillText(lines[0] + '与', x, y - lineHeight);
                    // 第二行：第二个词
                    ctx.fillText(lines[1], x, y + lineHeight);
                } else {
                    // 如果没有"与"，直接显示完整名称
                    ctx.fillText(name, x, y + 1);
                }
            }
            
            // 绘制刻度标签
            ctx.textAlign = 'center';
            ctx.fillStyle = '#666';
            const scaleFontSize = window.innerWidth < 768 ? 8 : 10;
            ctx.font = `${scaleFontSize}px Microsoft YaHei`;
            for (let i = 1; i <= 5; i++) {
                const value = i * 20;
                ctx.fillText(value, centerX - 12, centerY - radius * i / 5 + 3);
            }
        }
        
        // 初始化雷达图
        drawRadarChart();
        
        // 响应式调整 - 重新绘制而不是缩放
        window.addEventListener('resize', function() {
            // 重新设置canvas尺寸并重绘
            const containerWidth = canvas.parentElement.offsetWidth;
            const maxSize = Math.min(containerWidth, 500);
            const size = window.innerWidth < 768 ? Math.min(containerWidth, 300) : maxSize;
            
            canvas.width = size;
            canvas.height = size;
            drawRadarChart();
        });
        
        // 触发初始调整
        window.dispatchEvent(new Event('resize'));
    }
}

// 检查可重新生成的报告
async function checkRegenerationOptions() {
    const container = document.getElementById('regeneration-options');
    
    try {
        const response = await fetch('/api/sessions-can-regenerate', {
            method: 'GET',
            headers: {
                'Content-Type': 'application/json'
            }
        });
        
        if (!response.ok) {
            throw new Error(`请求失败: ${response.status}`);
        }
        
        const data = await response.json();
        
        if (data.success && data.sessions.length > 0) {
            // 显示可重新生成的会话列表
            container.style.display = 'block';
            container.innerHTML = `
                <div style="background: #f0f8ff; border-radius: 12px; padding: 25px; box-shadow: 0 4px 20px rgba(74, 144, 226, 0.1); border-left: 4px solid #4a90e2;">
                    <h4 style="color: #4a90e2; margin-bottom: 20px;">🔄 可重新生成的报告</h4>
                    <div style="display: grid; gap: 15px;">
                        ${data.sessions.map(session => `
                            <div style="background: white; padding: 20px; border-radius: 8px; border: 1px solid #e3f2fd; box-shadow: 0 2px 8px rgba(0,0,0,0.05);">
                                <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px;">
                                    <div>
                                        <strong style="color: #333;">${session.name}</strong>
                                        <span style="color: #666; margin-left: 10px; font-size: 14px;">${session.school} - ${session.grade}</span>
                                    </div>
                                    <button onclick="regenerateReport('${session.id}')" style="background: linear-gradient(135deg, #4a90e2, #357abd); color: white; padding: 8px 16px; border-radius: 6px; border: none; font-size: 14px; cursor: pointer; transition: transform 0.2s;">
                                        重新生成
                                    </button>
                                </div>
                                <div style="color: #888; font-size: 12px;">
                                    创建时间: ${new Date(session.created_at).toLocaleString('zh-CN', {
                                    timeZone: 'Asia/Shanghai',
                                    year: 'numeric',
                                    month: '2-digit',
                                    day: '2-digit',
                                    hour: '2-digit',
                                    minute: '2-digit'
                                })}
                                </div>
                            </div>
                        `).join('')}
                    </div>
                </div>
            `;
        } else {
            // 没有可重新生成的报告
            container.style.display = 'block';
            container.innerHTML = `
                <div style="background: #f9f9f9; border-radius: 12px; padding: 25px; text-align: center; border-left: 4px solid #ccc;">
                    <p style="color: #666;">暂无可重新生成的报告</p>
                </div>
            `;
        }
    } catch (error) {
        container.style.display = 'block';
        container.innerHTML = `
            <div style="background: #fff9f7; border-radius: 12px; padding: 25px; text-align: center; border-left: 4px solid #ff7e5f;">
                <p style="color: #ff7e5f;">检查可重新生成报告失败: ${error.message}</p>
            </div>
        `;
    }
}

// 重新生成报告
async function regenerateReport(sessionId) {
    try {
        const response = await fetch('/api/regenerate-report', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                sessionId: sessionId
            })
        });
        
        const result = await response.json();
        
        if (result.success) {
            // 重新生成成功，跳转到报告页面
            if (result.reportId) {
                window.location.href = `/report.html?id=${result.reportId}`;
            } else {
                alert('报告重新生成成功！请前往报告列表查看。');
                window.location.href = '/';
            }
        } else {
            alert('重新生成失败: ' + result.message);
        }
    } catch (error) {
        alert('重新生成失败: ' + error.message);
    }
}

// 初始化渲染器
document.addEventListener('DOMContentLoaded', function() {
    new SurveyRenderer();
});