<?php
/*
Template Name: Teacher Dashboard
*/
get_header();
if (!current_user_can('manage_options')) wp_die('无权限');
$current_user_id = get_current_user_id();
global $wpdb;

// 加载课程（creator或team）
$courses = $wpdb->get_results($wpdb->prepare("
    SELECT c.*, tt.teacher_id IS NOT NULL as is_team 
    FROM {$wpdb->prefix}edu_courses c 
    LEFT JOIN {$wpdb->prefix}edu_team_teachers tt ON c.id = tt.course_id AND tt.teacher_id = %d 
    WHERE c.creator_id = %d OR tt.teacher_id = %d", $current_user_id, $current_user_id, $current_user_id));

// 加载班级（活跃）
$classes = $wpdb->get_results("SELECT * FROM {$wpdb->prefix}edu_classes WHERE archived = 0");

// 游戏表格（按课程）
$games = $wpdb->get_results("SELECT g.*, c.name as course_name, u.display_name as creator_name, gt.name as type_name 
    FROM {$wpdb->prefix}edu_games g 
    JOIN {$wpdb->prefix}edu_courses c ON g.course_id = c.id 
    JOIN {$wpdb->prefix}edu_game_types gt ON g.type_id = gt.id 
    JOIN {$wpdb->prefix}users u ON g.creator_id = u.ID 
    ORDER BY g.created_at DESC");

// 处理POST：创建课程/游戏/发布/导入/归档（用AJAX调用上钩子）
?>

<style>
    .dashboard { max-width: 1200px; margin: 20px auto; padding: 20px; background: white; border-radius: 8px; }
    .section { margin-bottom: 30px; }
    table { width: 100%; border-collapse: collapse; }
    th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
    button, input, select { padding: 8px; margin: 5px; border: 1px solid #ddd; border-radius: 4px; }
    .form-group { margin-bottom: 15px; }
</style>

<div class="dashboard">
    <h1>教师仪表盘</h1>

    <!-- 创建课程 -->
    <div class="section">
        <h2>创建课程</h2>
        <form id="create-course-form">
            <div class="form-group">
                <label>课程名称</label>
                <input type="text" name="name" required placeholder="e.g. 新能源汽车概论">
            </div>
            <button type="submit">创建</button>
        </form>
    </div>

    <!-- 课程列表 & 添加团队教师 -->
    <div class="section">
        <h2>我的课程</h2>
        <table>
            <tr><th>ID</th><th>名称</th><th>创建时间</th><th>操作</th></tr>
            <?php foreach ($courses as $course): ?>
            <tr>
                <td><?php echo $course->id; ?></td>
                <td><?php echo esc_html($course->name); ?></td>
                <td><?php echo $course->created_at; ?></td>
                <td>
                    <button onclick="addTeamTeacher(<?php echo $course->id; ?>)">添加团队教师</button>
                    <!-- 弹窗选用户ID -->
                </td>
            </tr>
            <?php endforeach; ?>
        </table>
    </div>

    <!-- 创建游戏 -->
    <div class="section">
        <h2>创建游戏</h2>
        <form id="create-game-form">
            <div class="form-group">
                <label>课程</label>
                <select name="course_id" required><?php foreach ($courses as $c) echo "<option value='{$c->id}'>{$c->name}</option>"; ?></select>
            </div>
            <div class="form-group">
                <label>游戏类型</label>
                <select name="type_id" required>
                    <?php $types = $wpdb->get_results("SELECT * FROM {$wpdb->prefix}edu_game_types"); foreach ($types as $t) echo "<option value='{$t->id}'>{$t->name}</option>"; ?>
                </select>
            </div>
            <div class="form-group">
                <label>游戏名称</label>
                <input type="text" name="name" required>
            </div>
            <div class="form-group">
                <label>设置 (JSON)</label>
                <textarea name="settings" rows="5" placeholder='{"questions": [...]}'></textarea>
            </div>
            <button type="submit">创建</button>
        </form>
    </div>

    <!-- 游戏列表 -->
    <div class="section">
        <h2>游戏列表</h2>
        <table>
            <tr><th>ID</th><th>课程</th><th>类型</th><th>名称</th><th>创建人</th><th>创建时间</th><th>操作</th></tr>
            <?php foreach ($games as $game): ?>
            <tr>
                <td><?php echo $game->id; ?></td>
                <td><?php echo esc_html($game->course_name); ?></td>
                <td><?php echo esc_html($game->type_name); ?></td>
                <td><?php echo esc_html($game->name); ?></td>
                <td><?php echo esc_html($game->creator_name); ?></td>
                <td><?php echo $game->created_at; ?></td>
                <td>
                    <button onclick="publishGame(<?php echo $game->id; ?>)">发布</button>
                    <button onclick="editGame(<?php echo $game->id; ?>)">编辑</button>
                </td>
            </tr>
            <?php endforeach; ?>
        </table>
    </div>

    <!-- 班级管理 & 学生导入 & 归档 -->
    <div class="section">
        <h2>班级管理</h2>
        <form id="create-class-form">
            <div class="form-group">
                <label>班级名称</label>
                <input type="text" name="name" required>
                <select name="course_id"><option value="">无课程</option><?php foreach ($courses as $c) echo "<option value='{$c->id}'>{$c->name}</option>"; ?></select>
            </div>
            <button type="submit">创建班级</button>
        </form>

        <h3>导入学生 (下载模板: CSV - student_id,name,user_id,email)</h3>
        <a href="<?php echo admin_url('admin-post.php?action=download_template'); ?>">下载模板</a>
        <form id="import-students-form" enctype="multipart/form-data">
            <div class="form-group">
                <label>班级</label>
                <select name="class_id" required><?php foreach ($classes as $cls) echo "<option value='{$cls->id}'>{$cls->name}</option>"; ?></select>
            </div>
            <input type="file" name="csv_file" accept=".csv" required>
            <button type="submit">导入</button>
        </form>

        <table>
            <tr><th>ID</th><th>名称</th><th>课程</th><th>状态</th><th>操作</th></tr>
            <?php foreach ($classes as $cls): ?>
            <tr>
                <td><?php echo $cls->id; ?></td>
                <td><?php echo esc_html($cls->name); ?></td>
                <td><?php echo $cls->course_id ? $wpdb->get_var("SELECT name FROM {$wpdb->prefix}edu_courses WHERE id = {$cls->course_id}") : '通用'; ?></td>
                <td><?php echo $cls->archived ? '归档' : '活跃'; ?></td>
                <td><button onclick="archiveClass(<?php echo $cls->id; ?>)"><?php echo $cls->archived ? '恢复' : '归档'; ?></button></td>
            </tr>
            <?php endforeach; ?>
        </table>
    </div>

    <!-- 发布弹窗逻辑 (JS) -->
</div>

<script>
    const ajaxUrl = '<?php echo admin_url("admin-ajax.php"); ?>';
    const nonce = '<?php echo wp_create_nonce("teacher_actions"); ?>';

    // 示例：创建课程
    document.getElementById('create-course-form').addEventListener('submit', (e) => {
        e.preventDefault();
        const formData = new FormData(e.target);
        formData.append('action', 'create_course');
        formData.append('nonce', nonce);
        fetch(ajaxUrl, { method: 'POST', body: formData }).then(res => res.json()).then(data => {
            if (data.success) alert('创建成功！ID: ' + data.data.course_id);
        });
    });

    // 类似其他表单：create_game, publish_game (POST class_ids, start_time, end_time), import_students, archive_class

    function addTeamTeacher(courseId) {
        const teacherId = prompt('教师User ID:');
        fetch(ajaxUrl, { method: 'POST', body: new URLSearchParams({ action: 'add_team_teacher', nonce, course_id: courseId, teacher_id: teacherId }) })
            .then(res => res.json()).then(data => alert(data.success ? '添加成功' : data.data));
    }

    function publishGame(gameId) {
        const classIds = prompt('班级IDs (逗号分隔):'); // e.g. 1,2
        const start = prompt('开始时间 (YYYY-MM-DD HH:MM):');
        const end = prompt('结束时间 (可选):');
        fetch(ajaxUrl, { method: 'POST', body: new URLSearchParams({ action: 'publish_game', nonce, game_id: gameId, class_ids: classIds, start_time: start, end_time: end }) })
            .then(res => res.json()).then(data => alert(data.success ? '发布成功' : data.data));
    }

    // editGame: 加载settings JSON编辑
    // archiveClass: POST action=archive_class
</script>

<?php get_footer(); ?>