/**
 * 班级操行分管理系统 - 操行分管理页JS
 * 
 * 开发者: Canglan
 * 版权归属: Sea Network Technology Studio
 * 
 * 版权所有 © Sea Network Technology Studio
 */

(function() {
'use strict';

async function loadStudents() {
    const res = await apiGet('/api/admin/students', {page_size: 1000});
    if (res && res.success) {
        let html = '';
        res.data.students.forEach(student => {
            html += `<tr>
                <td><input type="checkbox" class="student-checkbox" data-id="${student.student_id}"></td>
                <td>${escapeHtml(student.student_no)}</td>
                <td><a href="/admin/history.php?student_id=${student.student_id}" class="link">${escapeHtml(student.name)}</a></td>
                <td>${student.total_points}</td>
                <td><button class="btn btn-sm btn-outline" onclick="showSinglePointsModal(${student.student_id}, '${escapeHtml(student.name)}')">加减分</button></td>
            </tr>`;
        });
        if (res.data.students.length === 0) {
            html = '<tr><td colspan="5" style="text-align:center;">暂无学生数据</td></tr>';
        }
        document.getElementById('studentList').innerHTML = html;
    }
}

function showSinglePointsModal(studentId, studentName) {
    window.selectedStudentIds = [studentId];
    document.getElementById('selectedStudentsCount').innerHTML = `${studentName} (1人)`;
    document.getElementById('pointsChange').value = '';
    document.getElementById('pointsReason').value = '';
    document.getElementById('batchPointsModal').style.display = 'flex';
}

async function exportMoralityRecords() {
    showToast('正在导出德育分记录...', 'info');
    
    try {
        const studentsRes = await apiGet('/api/admin/students', { page_size: 1000 });
        if (!studentsRes || !studentsRes.success) {
            showToast('获取学生列表失败', 'error');
            return;
        }
        
        const students = studentsRes.data.students;
        if (students.length === 0) {
            showToast('没有找到学生', 'warning');
            return;
        }
        
        const historyRes = await apiGet('/api/admin/conduct/history', { page: 1, page_size: 1000 });
        if (!historyRes || !historyRes.success) {
            showToast('获取历史记录失败', 'error');
            return;
        }
        
        const allRecords = historyRes.data.records || [];
        
        const recordsByStudent = {};
        allRecords.forEach(record => {
            const sid = record.student_id;
            if (!recordsByStudent[sid]) {
                recordsByStudent[sid] = [];
            }
            recordsByStudent[sid].push(record);
        });
        
        const studentRecords = [];
        for (const student of students) {
            const studentRecords_list = recordsByStudent[student.student_id] || [];
            const positiveRecords = studentRecords_list.filter(r => r.points_change > 0).map(r => `${r.reason}(+${r.points_change})`);
            const negativeRecords = studentRecords_list.filter(r => r.points_change < 0).map(r => `${r.reason}(${r.points_change})`);
            
            studentRecords.push({
                student_no: student.student_no,
                name: student.name,
                total_points: student.total_points || 0,
                positive_history: positiveRecords.join('; '),
                negative_history: negativeRecords.join('; ')
            });
        }
        
        function escapeCsvField(field) {
            if (field === null || field === undefined) return '';
            let str = String(field).replace(/[\r\n]+/g, ' ');
            str = str.replace(/"/g, '""');
            if (/[\,\;\"\s]/.test(str)) {
                str = '"' + str + '"';
            }
            return str;
        }
        
        let csv = '\uFEFF';
        csv += '学号,姓名,分数,加分历史,减分记录\n';
        studentRecords.forEach(s => {
            csv += `${escapeCsvField(s.student_no)},${escapeCsvField(s.name)},${escapeCsvField(s.total_points)},${escapeCsvField(s.positive_history)},${escapeCsvField(s.negative_history)}\n`;
        });
        
        const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
        const url = URL.createObjectURL(blob);
        const link = document.createElement('a');
        link.href = url;
        link.download = `德育分记录_${new Date().toISOString().slice(0,10)}.csv`;
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
        URL.revokeObjectURL(url);
        
        showToast(`导出成功，共${studentRecords.length}名学生`);
    } catch (err) {
        showToast('导出失败：' + err.message, 'error');
        console.error('导出失败:', err);
    }
}
// 宿舍集体加分相关
var dormitoryStudentIds = [];

async function showDormitoryPointsModal() {
    dormitoryStudentIds = [];
    document.getElementById('dormitorySelect').innerHTML = '<option value="">-- 请选择宿舍 --</option>';
    document.getElementById('dormitoryStudentsGroup').style.display = 'none';
    document.getElementById('dormitoryStudentsList').innerHTML = '';
    document.getElementById('dormitoryPointsChange').value = '';
    document.getElementById('dormitoryPointsReason').value = '';
    
    // 加载宿舍列表
    const res = await apiGet('/api/admin/students/dormitories');
    if (res && res.success && res.data.dormitories) {
        const select = document.getElementById('dormitorySelect');
        res.data.dormitories.forEach(d => {
            const option = document.createElement('option');
            option.value = d;
            option.textContent = d;
            select.appendChild(option);
        });
    }
    
    document.getElementById('dormitoryPointsModal').style.display = 'flex';
}

async function onDormitorySelected() {
    const dormitory = document.getElementById('dormitorySelect').value;
    const studentsGroup = document.getElementById('dormitoryStudentsGroup');
    const studentsList = document.getElementById('dormitoryStudentsList');
    const studentsCount = document.getElementById('dormitoryStudentsCount');
    
    dormitoryStudentIds = [];
    studentsList.innerHTML = '';
    
    if (!dormitory) {
        studentsGroup.style.display = 'none';
        return;
    }
    
    // 加载该宿舍的学生
    const res = await apiGet('/api/admin/students', { dormitory_number: dormitory, page_size: 1000 });
    if (res && res.success && res.data.students) {
        const students = res.data.students;
        if (students.length === 0) {
            studentsList.innerHTML = '<p style="color: var(--text-secondary);">该宿舍暂无学生</p>';
            studentsCount.textContent = '';
        } else {
            students.forEach(s => {
                dormitoryStudentIds.push(s.student_id);
                const div = document.createElement('div');
                div.style.cssText = 'display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px solid var(--border-color);';
                div.innerHTML = `<span>${escapeHtml(s.name)}</span><span style="color: var(--text-secondary);">${escapeHtml(s.student_no)}</span>`;
                studentsList.appendChild(div);
            });
            studentsCount.textContent = `共 ${students.length} 人`;
        }
        studentsGroup.style.display = 'block';
    } else {
        studentsList.innerHTML = '<p style="color: var(--text-secondary);">加载失败</p>';
        studentsGroup.style.display = 'block';
    }
}

async function submitDormitoryPoints() {
    if (dormitoryStudentIds.length === 0) {
        showToast('该宿舍没有学生', 'warning');
        return;
    }
    
    const pointsChange = parseInt(document.getElementById('dormitoryPointsChange').value);
    const reason = document.getElementById('dormitoryPointsReason').value;
    
    if (isNaN(pointsChange) || pointsChange === 0) {
        showToast('分值不能为0', 'error');
        return;
    }
    
    if (!reason.trim()) {
        showToast('请填写原因', 'error');
        return;
    }
    
    const data = {
        student_ids: dormitoryStudentIds,
        points_change: pointsChange,
        reason: reason
    };
    
    const res = await apiPost('/api/admin/conduct/add', data);
    
    if (res && res.success) {
        showToast(`操作成功: ${res.data.success_count} 人成功`);
        closeModal('dormitoryPointsModal');
        loadStudents();
    } else {
        showToast(res?.message || '操作失败', 'error');
    }
}

loadStudents();

window.loadStudents = loadStudents;
window.showSinglePointsModal = showSinglePointsModal;
window.exportMoralityRecords = exportMoralityRecords;
window.showDormitoryPointsModal = showDormitoryPointsModal;
window.onDormitorySelected = onDormitorySelected;
window.submitDormitoryPoints = submitDormitoryPoints;

})();