/**
 * 多班级版班级管理系统 - 管理端首页JS
 * 
 * 开发者: Canglan
 * 版权归属: Sea Network Technology Studio
 * 
 * 版权所有 © Sea Network Technology Studio
 */

(function() {
'use strict';

const role = window.PAGE_CONFIG.role;
let totalStudents = 0;

async function loadDashboard() {
    // 并行加载学生数据和学期信息
    const [studentsRes, semesterRes] = await Promise.all([
        apiGet('/api/admin/students'),
        apiGet('/api/semester/active')
    ]);
    
    let statsHtml = '';
    if (studentsRes && studentsRes.success) {
        statsHtml += `
            <div class="stat-card">
                <div class="stat-label">学生总数</div>
                <div class="stat-value">${studentsRes.data.total || 0}</div>
            </div>
        `;
    }
    
    // 显示学期信息和当前周数
    if (semesterRes && semesterRes.success && semesterRes.data) {
        const sem = semesterRes.data;
        const weekNum = sem.current_week;
        let semesterInfo = escapeHtml(sem.semester_name);
        if (weekNum && weekNum > 0) {
            semesterInfo += ` · 第${weekNum}周`;
        }
        statsHtml += `
            <div class="stat-card">
                <div class="stat-label">当前学期</div>
                <div class="stat-value" style="font-size:20px;">${semesterInfo}</div>
            </div>
        `;
    }
    
    document.getElementById('dashboardStats').innerHTML = statsHtml;
    
    let quickActions = '';
    if (role === '班主任' || role === '班长' || role === '学习委员' || role === '劳动委员' || role === '志愿委员') {
        quickActions += '<button class="btn btn-primary" onclick="location.href=\'/admin/conduct.php\'">操行分管理</button>';
    }
    if (role === '班主任' || role === '学习委员') {
        quickActions += '<button class="btn btn-primary" onclick="location.href=\'/admin/homework.php\'">作业扣分</button>';
    }
    if (role === '班主任' || role === '考勤委员') {
        quickActions += '<button class="btn btn-primary" onclick="location.href=\'/admin/attendance.php\'">考勤管理</button>';
    }
    if (role === '班主任') {
        quickActions += '<button class="btn btn-outline" onclick="location.href=\'/admin/students.php\'">导入学生</button>';
        quickActions += '<button class="btn btn-secondary" onclick="location.href=\'/admin/conduct.php\'">导出德育分记录</button>';
    }
    document.getElementById('quickActions').innerHTML = quickActions || '<p>暂无快捷操作</p>';
    
    const rankingRes = await apiGet('/api/student/ranking', { limit: 100 });
    if (rankingRes && rankingRes.success) {
        totalStudents = rankingRes.data.total_students || 0;
        let html = '';
        rankingRes.data.ranking.forEach((student, index) => {
            const rank = index + 1;
            html += `<tr>
                <td>${rank}</td>
                <td>${escapeHtml(student.student_no)}</td>
                <td>${escapeHtml(student.name)}</td>
                <td>${student.total_points}</td>
            </tr>`;
        });
        if (rankingRes.data.ranking.length === 0) {
            html = '<tr><td colspan="4" style="text-align:center;">暂无数据</td></tr>';
        }
        document.getElementById('rankingList').innerHTML = html;
    }
}

function applyPercentileFilter() {
    const input = document.getElementById('percentileFilter');
    const percentile = parseInt(input.value);
    if (isNaN(percentile) || percentile < 1 || percentile > 100) {
        showToast('请输入 1-100 之间的整数', 'error');
        return;
    }
    const rows = document.getElementById('rankingList').querySelectorAll('tr');
    if (rows.length === 0) return;
    const showCount = Math.max(1, Math.floor(totalStudents * (percentile / 100)));
    rows.forEach(function(row, index) {
        row.style.display = index < showCount ? '' : 'none';
    });
}

function resetPercentileFilter() {
    document.getElementById('percentileFilter').value = 100;
    const rows = document.getElementById('rankingList').querySelectorAll('tr');
    rows.forEach(function(row) {
        row.style.display = '';
    });
}

document.getElementById('percentileFilter').addEventListener('keypress', function(e) {
    if (e.key === 'Enter') applyPercentileFilter();
});

loadDashboard();

window.loadDashboard = loadDashboard;
window.applyPercentileFilter = applyPercentileFilter;
window.resetPercentileFilter = resetPercentileFilter;

})();