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

(function() {
'use strict';

let currentStatus = 'absent';
let studentsData = [];
let existingRecords = [];

// 考勤扣分配置映射（从后端配置注入）
const attendanceDeductionMap = {
    absent: window.DEDUCTION_ATTENDANCE_ABSENT || 3,
    late: window.DEDUCTION_ATTENDANCE_LATE || 1,
    leave: window.DEDUCTION_ATTENDANCE_LEAVE || 0
};

// 初始化按钮文字
function initAttendanceButtons() {
    const btnAbsent = document.getElementById('btnAbsent');
    const btnLate = document.getElementById('btnLate');
    const btnLeave = document.getElementById('btnLeave');
    if (btnAbsent) btnAbsent.textContent = '缺勤(' + attendanceDeductionMap.absent + '分)';
    if (btnLate) btnLate.textContent = '迟到(' + attendanceDeductionMap.late + '分)';
    if (btnLeave) btnLeave.textContent = '请假(' + (attendanceDeductionMap.leave > 0 ? attendanceDeductionMap.leave + '分' : '不扣分') + ')';
    if (attendanceDeductionMap.absent > 0) {
        document.getElementById('customDeduction').value = attendanceDeductionMap.absent;
    }
}

function selectStatus(btn) {
    document.querySelectorAll('.status-btn').forEach(b => b.classList.remove('active'));
    btn.classList.add('active');
    currentStatus = btn.dataset.status;
    const defaultDeduction = attendanceDeductionMap[currentStatus] || 0;
    if (defaultDeduction > 0) {
        document.getElementById('customDeduction').value = defaultDeduction;
    } else {
        document.getElementById('customDeduction').value = '';
    }
}

async function loadStudents() {
    const res = await apiGet('/api/admin/students', {page_size: 1000});
    if (res && res.success) {
        studentsData = res.data.students;
        renderStudentGrid();
        await loadExistingRecords();
    } else {
        document.getElementById('studentGrid').innerHTML = '<div style="text-align:center;padding:20px;color:#999;">加载学生列表失败</div>';
    }
}

function renderStudentGrid() {
    const currentSlot = document.getElementById('attendanceSlot').value;
    let html = '';
    studentsData.forEach(student => {
        const hasRecord = existingRecords.some(r => r.student_id === student.student_id && r.slot === currentSlot);
        html += `<div class="student-cell${hasRecord ? ' has-record' : ''}"
                     data-id="${student.student_id}"
                     data-name="${escapeHtml(student.name)}"
                     onclick="toggleStudent(this)">
                     <span class="student-cell-name">${escapeHtml(student.name)}</span>
                     <span class="student-cell-no">${escapeHtml(student.student_no)}</span>
                 </div>`;
    });
    if (studentsData.length === 0) {
        html = '<div style="text-align:center;padding:20px;color:#999;width:100%;">暂无学生数据</div>';
    }
    document.getElementById('studentGrid').innerHTML = html;
}

function toggleStudent(cell) {
    cell.classList.toggle('selected');
}

function selectAllStudents() {
    document.querySelectorAll('.student-cell:not(.has-record)').forEach(cell => {
        cell.classList.add('selected');
    });
}

function deselectAllStudents() {
    document.querySelectorAll('.student-cell').forEach(cell => {
        cell.classList.remove('selected');
    });
}

async function loadExistingRecords() {
    const date = document.getElementById('attendanceDate').value;
    const slot = document.getElementById('attendanceSlot').value;
    const res = await apiGet('/api/admin/attendance/records', { date, slot });
    if (res && res.success) {
        existingRecords = res.data.records || [];
        renderStudentGrid();
    }
}

async function submitAttendance() {
    const selectedCells = document.querySelectorAll('.student-cell.selected');
    if (selectedCells.length === 0) {
        showToast('请先选择有考勤异常的学生', 'warning');
        return;
    }

    const date = document.getElementById('attendanceDate').value;
    const slot = document.getElementById('attendanceSlot').value;
    const reason = document.getElementById('attendanceReason').value;
    const customDeduction = document.getElementById('customDeduction').value;
    const customDeductionValue = customDeduction ? parseInt(customDeduction) : null;

    const promises = [];
    selectedCells.forEach(cell => {
        const studentId = parseInt(cell.dataset.id);
        const payload = {
            student_id: studentId,
            date: date,
            slot: slot,
            status: currentStatus,
            reason: reason,
            apply_deduction: true
        };
        if (customDeductionValue !== null && customDeductionValue > 0) {
            payload.custom_deduction = customDeductionValue;
        }
        promises.push(apiPost('/api/admin/attendance', payload));
    });

    const results = await Promise.allSettled(promises);
    const succeeded = results.filter(r => r.status === 'fulfilled' && r.value?.success).length;
    const failed = results.length - succeeded;

    if (failed === 0) {
        showToast(`考勤提交成功（${succeeded}条）`);
    } else {
        showToast(`提交完成：成功${succeeded}条，失败${failed}条`, 'error');
    }

    deselectAllStudents();
    await loadExistingRecords();
    loadAttendanceRecords();
}

async function loadAttendanceRecords() {
    const date = document.getElementById('attendanceDate').value;
    const res = await apiGet('/api/admin/attendance/records', { date });
    if (res && res.success) {
        let html = '';
        const records = res.data.records || [];
        records.forEach(record => {
            html += `<tr>
                <td>${escapeHtml(record.student_no)}</td>
                <td>${escapeHtml(record.student_name)}</td>
                <td>${getStatusBadge(record.status, 'attendance')}</td>
                <td>${escapeHtml(record.reason || '-')}</td>
                <td>${escapeHtml(record.recorder_name || '-')}</td>
                <td>${record.deduction_applied ? '已扣分' : '-'}</td>
            </tr>`;
        });
        if (records.length === 0) {
            html = '<tr><td colspan="6" style="text-align:center;">暂无考勤记录</td></tr>';
        }
        document.getElementById('attendanceList').innerHTML = html;
    }
}

// 日期或时段变化时重新加载
document.getElementById('attendanceDate').addEventListener('change', function() {
    loadExistingRecords();
    loadAttendanceRecords();
});
document.getElementById('attendanceSlot').addEventListener('change', function() {
    loadExistingRecords();
});

// 页面初始化
initAttendanceButtons();
loadStudents();
loadAttendanceRecords();

window.selectStatus = selectStatus;
window.loadStudents = loadStudents;
window.toggleStudent = toggleStudent;
window.selectAllStudents = selectAllStudents;
window.deselectAllStudents = deselectAllStudents;
window.submitAttendance = submitAttendance;
window.loadAttendanceRecords = loadAttendanceRecords;

})();