{% extends 'layout/base.html' %}

{% block title %}添加学生 - SmartDSP考勤管理系统{% endblock %}

{% block content %}
<div class="container-fluid mt-4">
    <!-- 页面标题 -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <h1 class="h3 mb-0">
            <i class="fas fa-user-plus me-2"></i>添加学生
        </h1>
        <a href="{{ url_for('admin.student_list') }}" class="btn btn-outline-secondary">
            <i class="fas fa-arrow-left me-1"></i>返回学生列表
        </a>
    </div>

    <!-- 选项卡导航 -->
    <ul class="nav nav-tabs mb-4" id="addStudentTabs" role="tablist">
        <li class="nav-item" role="presentation">
            <button class="nav-link active" id="single-tab" data-bs-toggle="tab" data-bs-target="#single" 
                    type="button" role="tab" aria-controls="single" aria-selected="true">
                <i class="fas fa-user me-2"></i>单个添加
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="batch-tab" data-bs-toggle="tab" data-bs-target="#batch" 
                    type="button" role="tab" aria-controls="batch" aria-selected="false">
                <i class="fas fa-users me-2"></i>批量导入
            </button>
        </li>
    </ul>

    <!-- 选项卡内容 -->
    <div class="tab-content" id="addStudentTabsContent">
        <!-- 单个添加选项卡 -->
        <div class="tab-pane fade show active" id="single" role="tabpanel" aria-labelledby="single-tab">
            <div class="row justify-content-center">
                <div class="col-lg-8">
                    <div class="card shadow">
                        <div class="card-header py-3">
                            <h6 class="m-0 font-weight-bold text-primary">
                                <i class="fas fa-info-circle me-2"></i>学生基本信息
                            </h6>
                        </div>
                        <div class="card-body">
                            <form id="addStudentForm" method="POST">
                                <div class="row">
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">学号 <span class="text-danger">*</span></label>
                                            <input type="text" class="form-control" name="student_number" id="student_number" required
                                                   placeholder="请输入学号">
                                            <div class="form-text">学号将作为登录账号使用</div>
                                        </div>
                                    </div>
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">姓名 <span class="text-danger">*</span></label>
                                            <input type="text" class="form-control" name="name" required
                                                   placeholder="请输入姓名">
                                        </div>
                                    </div>
                                </div>

                                <div class="row">
                                    <div class="col-md-4">
                                        <div class="mb-3">
                                            <label class="form-label">性别 <span class="text-danger">*</span></label>
                                            <select class="form-select" name="gender" required>
                                                <option value="">请选择性别</option>
                                                <option value="男">男</option>
                                                <option value="女">女</option>
                                            </select>
                                        </div>
                                    </div>
                                    <div class="col-md-4">
                                        <div class="mb-3">
                                            <label class="form-label">年级 <span class="text-danger">*</span></label>
                                            <input type="number" class="form-control" name="grade" required
                                                   min="20" max="30" placeholder="如：23">
                                            <div class="form-text">如：20级、21级、22级</div>
                                        </div>
                                    </div>
                                    <div class="col-md-4">
                                        <div class="mb-3">
                                            <label class="form-label">手机号</label>
                                            <input type="tel" class="form-control" name="phone" maxlength="11"
                                                   pattern="1[3-9]\d{9}" placeholder="请输入11位手机号">
                                        </div>
                                    </div>
                                </div>

                                <div class="row">
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">学院</label>
                                            <input type="text" class="form-control" name="college"
                                                   placeholder="请输入学院名称">
                                        </div>
                                    </div>
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">专业</label>
                                            <input type="text" class="form-control" name="major"
                                                   placeholder="请输入专业名称">
                                        </div>
                                    </div>
                                </div>

                                <div class="row">
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">导师</label>
                                            <input type="text" class="form-control" name="supervisor"
                                                   placeholder="请输入导师姓名">
                                        </div>
                                    </div>
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">学位类型</label>
                                            <select class="form-select" name="degree_type">
                                                <option value="">请选择学位类型</option>
                                                <option value="专硕">专硕</option>
                                                <option value="学硕">学硕</option>
                                                <option value="学博">学博</option>
                                                <option value="专博">专博</option>
                                            </select>
                                        </div>
                                    </div>
                                </div>

                                <div class="row">
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">入学日期</label>
                                            <input type="date" class="form-control" name="enrollment_date">
                                        </div>
                                    </div>
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">状态</label>
                                            <select class="form-select" name="status">
                                                <option value="在读" selected>在读</option>
                                                <option value="毕业">毕业</option>
                                            </select>
                                        </div>
                                    </div>
                                </div>

                                <div class="row">
                                    <div class="col-md-6">
                                        <div class="mb-3">
                                            <label class="form-label">登录密码</label>
                                            <input type="password" class="form-control" name="password" id="password" readonly
                                                   placeholder="将自动设置为学号">
                                            <div class="form-text">
                                                <i class="fas fa-info-circle text-info me-1"></i>
                                                密码将自动设置为学号，学生可在登录后自行修改
                                            </div>
                                        </div>
                                    </div>
                                    <div class="col-md-6">
                                        <div class="mb-3 d-flex align-items-end">
                                            <div class="form-check">
                                                <input class="form-check-input" type="checkbox" id="custom_password">
                                                <label class="form-check-label" for="custom_password">
                                                    自定义密码
                                                </label>
                                            </div>
                                        </div>
                                    </div>
                                </div>

                                <hr class="my-4">

                                <div class="d-flex justify-content-end gap-2">
                                    <a href="{{ url_for('admin.student_list') }}" class="btn btn-secondary">
                                        <i class="fas fa-times me-1"></i>取消
                                    </a>
                                    <button type="submit" class="btn btn-success">
                                        <i class="fas fa-save me-1"></i>保存学生信息
                                    </button>
                                </div>
                            </form>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- 批量导入选项卡 -->
        <div class="tab-pane fade" id="batch" role="tabpanel" aria-labelledby="batch-tab">
            <div class="row justify-content-center">
                <div class="col-lg-10">
                    <div class="card shadow">
                        <div class="card-header py-3">
                            <h6 class="m-0 font-weight-bold text-primary">
                                <i class="fas fa-upload me-2"></i>批量导入学生信息
                            </h6>
                        </div>
                        <div class="card-body">
                            <!-- 使用说明 -->
                            <div class="alert alert-info">
                                <h6><i class="fas fa-info-circle me-2"></i>使用说明</h6>
                                <ul class="mb-2">
                                    <li>请上传Excel文件（.xlsx或.xls格式）</li>
                                    <li>Excel文件应包含以下列：姓名、性别、年级、学号、手机号、导师、学院、专业、学位类型</li>
                                    <li>第一行应为表头，数据从第二行开始</li>
                                    <li>学号不能重复，如有重复将跳过该记录</li>
                                    <li>年级格式：20、21、22等（不要写成2020、2021）</li>
                                </ul>
                                <div class="alert alert-warning mb-0">
                                    <i class="fas fa-key me-2"></i>
                                    <strong>密码设置：</strong>系统将自动将每个学生的密码设置为其学号，学生可在登录后自行修改
                                </div>
                            </div>

                            <!-- 模板下载 -->
                            <div class="mb-4">
                                <h6>📥 下载Excel模板</h6>
                                <a href="{{ url_for('admin.download_student_template') }}" class="btn btn-outline-primary">
                                    <i class="fas fa-download me-1"></i>下载Excel模板
                                </a>
                                <small class="text-muted ms-2">建议先下载模板，按照格式填写学生信息</small>
                            </div>

                            <!-- 文件上传表单 -->
                            <form id="batchImportForm" enctype="multipart/form-data">
                                <div class="mb-3">
                                    <label class="form-label">选择Excel文件 <span class="text-danger">*</span></label>
                                    <input type="file" class="form-control" name="excel_file" accept=".xlsx,.xls" required>
                                    <div class="form-text">支持 .xlsx 和 .xls 格式</div>
                                </div>

                                <div class="mb-3">
                                    <div class="form-check">
                                        <input class="form-check-input" type="checkbox" id="overwrite_existing" name="overwrite_existing">
                                        <label class="form-check-label" for="overwrite_existing">
                                            覆盖已存在的学生信息（默认跳过重复学号）
                                        </label>
                                    </div>
                                </div>

                                <hr class="my-4">

                                <div class="d-flex justify-content-end gap-2">
                                    <button type="button" class="btn btn-secondary" onclick="clearBatchForm()">
                                        <i class="fas fa-times me-1"></i>清空
                                    </button>
                                    <button type="submit" class="btn btn-primary">
                                        <i class="fas fa-upload me-1"></i>开始导入
                                    </button>
                                </div>
                            </form>

                            <!-- 导入结果显示区域 -->
                            <div id="importResult" class="mt-4" style="display: none;">
                                <h6>导入结果</h6>
                                <div id="importProgress" class="progress mb-3" style="display: none;">
                                    <div class="progress-bar progress-bar-striped progress-bar-animated" 
                                         role="progressbar" style="width: 0%"></div>
                                </div>
                                <div id="importSummary"></div>
                                <div id="importDetails"></div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
// 学号输入框变化时自动同步到密码字段
document.getElementById('student_number').addEventListener('input', function() {
    const passwordField = document.getElementById('password');
    const customPasswordCheckbox = document.getElementById('custom_password');
    
    if (!customPasswordCheckbox.checked) {
        passwordField.value = this.value;
    }
});

// 自定义密码复选框处理
document.getElementById('custom_password').addEventListener('change', function() {
    const passwordField = document.getElementById('password');
    const studentNumberField = document.getElementById('student_number');
    
    if (this.checked) {
        passwordField.removeAttribute('readonly');
        passwordField.placeholder = '请输入自定义密码';
        passwordField.focus();
    } else {
        passwordField.setAttribute('readonly', true);
        passwordField.placeholder = '将自动设置为学号';
        passwordField.value = studentNumberField.value;
    }
});

// 单个添加表单处理
document.getElementById('addStudentForm').addEventListener('submit', function(e) {
    e.preventDefault();

    const formData = new FormData(this);
    const data = Object.fromEntries(formData);
    
    // 如果没有自定义密码，使用学号作为密码
    const customPasswordCheckbox = document.getElementById('custom_password');
    if (!customPasswordCheckbox.checked) {
        data.password = data.student_number;
    }

    // 表单验证
    if (!data.student_number || !data.name || !data.gender || !data.grade) {
        alert('请填写所有必填项');
        return;
    }

    // 验证手机号格式
    if (data.phone && !/^1[3-9]\d{9}$/.test(data.phone)) {
        alert('手机号格式不正确');
        return;
    }

    // 验证密码不能为空
    if (!data.password || data.password.trim() === '') {
        alert('密码不能为空');
        return;
    }

    // 禁用提交按钮
    const submitBtn = this.querySelector('button[type="submit"]');
    const originalText = submitBtn.innerHTML;
    submitBtn.disabled = true;
    submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>保存中...';

    fetch('/admin/students/add', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify(data)
    })
    .then(response => response.json())
    .then(result => {
        if (result.success) {
            // 显示成功消息
            showAlert('success', result.message + `（密码：${data.password}）`);
            // 3秒后跳转到学生列表
            setTimeout(() => {
                window.location.href = '/admin/students';
            }, 3000);
        } else {
            // 显示错误消息
            showAlert('danger', result.message);
            // 恢复提交按钮
            submitBtn.disabled = false;
            submitBtn.innerHTML = originalText;
        }
    })
    .catch(error => {
        console.error('Error:', error);
        showAlert('danger', '网络错误，请稍后重试');
        // 恢复提交按钮
        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
    });
});

// 批量导入表单处理
document.getElementById('batchImportForm').addEventListener('submit', function(e) {
    e.preventDefault();

    const formData = new FormData(this);
    const fileInput = this.querySelector('input[name="excel_file"]');
    
    if (!fileInput.files[0]) {
        alert('请选择要上传的Excel文件');
        return;
    }

    // 验证文件格式
    const fileName = fileInput.files[0].name;
    if (!fileName.match(/\.(xlsx|xls)$/i)) {
        alert('请上传Excel文件（.xlsx或.xls格式）');
        return;
    }

    // 显示进度条
    const importResult = document.getElementById('importResult');
    const importProgress = document.getElementById('importProgress');
    const progressBar = importProgress.querySelector('.progress-bar');
    
    importResult.style.display = 'block';
    importProgress.style.display = 'block';
    progressBar.style.width = '10%';

    // 禁用提交按钮
    const submitBtn = this.querySelector('button[type="submit"]');
    const originalText = submitBtn.innerHTML;
    submitBtn.disabled = true;
    submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>导入中...';

    // 发送文件
    fetch('/admin/students/batch_import', {
        method: 'POST',
        body: formData
    })
    .then(response => {
        progressBar.style.width = '50%';
        return response.json();
    })
    .then(result => {
        progressBar.style.width = '100%';
        
        // 隐藏进度条
        setTimeout(() => {
            importProgress.style.display = 'none';
        }, 500);

        // 显示结果
        displayImportResult(result);
        
        // 恢复提交按钮
        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
    })
    .catch(error => {
        console.error('Error:', error);
        progressBar.style.width = '100%';
        progressBar.classList.add('bg-danger');
        
        setTimeout(() => {
            importProgress.style.display = 'none';
        }, 500);
        
        showAlert('danger', '导入失败，请稍后重试');
        
        // 恢复提交按钮
        submitBtn.disabled = false;
        submitBtn.innerHTML = originalText;
    });
});

// 显示导入结果
function displayImportResult(result) {
    const summaryDiv = document.getElementById('importSummary');
    const detailsDiv = document.getElementById('importDetails');
    
    if (result.success) {
        summaryDiv.innerHTML = `
            <div class="alert alert-success">
                <h6><i class="fas fa-check-circle me-2"></i>导入完成</h6>
                <p class="mb-1">成功导入 <strong>${result.success_count}</strong> 个学生，
                跳过 <strong>${result.skip_count || 0}</strong> 个，
                失败 <strong>${result.error_count || 0}</strong> 个</p>
                <small class="text-muted">
                    <i class="fas fa-key me-1"></i>所有学生的初始密码均为其学号
                </small>
            </div>
        `;
        
        // 显示详细信息
        if (result.details && result.details.length > 0) {
            let detailsHtml = '<div class="mt-3"><h6>详细信息</h6><ul class="list-group">';
            result.details.forEach(detail => {
                const iconClass = detail.status === 'success' ? 'text-success fas fa-check' : 
                                detail.status === 'skip' ? 'text-warning fas fa-exclamation-triangle' : 
                                'text-danger fas fa-times';
                detailsHtml += `
                    <li class="list-group-item d-flex justify-content-between align-items-center">
                        <span>${detail.name} (${detail.student_number})</span>
                        <span class="${iconClass.includes('success') ? 'text-success' : iconClass.includes('warning') ? 'text-warning' : 'text-danger'}">
                            <i class="${iconClass}"></i> ${detail.message}
                        </span>
                    </li>
                `;
            });
            detailsHtml += '</ul></div>';
            detailsDiv.innerHTML = detailsHtml;
        }
    } else {
        summaryDiv.innerHTML = `
            <div class="alert alert-danger">
                <h6><i class="fas fa-exclamation-triangle me-2"></i>导入失败</h6>
                <p class="mb-0">${result.message}</p>
            </div>
        `;
    }
}

// 清空批量导入表单
function clearBatchForm() {
    document.getElementById('batchImportForm').reset();
    document.getElementById('importResult').style.display = 'none';
}

// 显示提示消息
function showAlert(type, message) {
    const alertDiv = document.createElement('div');
    alertDiv.className = `alert alert-${type} alert-dismissible fade show`;
    alertDiv.innerHTML = `
        <i class="fas fa-${type === 'success' ? 'check-circle' : 'exclamation-triangle'} me-2"></i>${message}
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
    `;
    
    // 插入到当前活动的选项卡中
    const activeTab = document.querySelector('.tab-pane.active .card-body');
    activeTab.insertBefore(alertDiv, activeTab.firstChild);
    
    // 滚动到顶部
    window.scrollTo(0, 0);
}

// 学号输入框失焦时检查是否已存在
document.querySelector('input[name="student_number"]').addEventListener('blur', function() {
    const studentNumber = this.value.trim();
    if (studentNumber) {
        // 这里可以添加AJAX检查学号是否已存在的逻辑
        // 为了简化，暂时不实现
    }
});
</script>
{% endblock %}