<?php
require_once '../config.php';

if (!isset($_SESSION['user_id']) || $_SESSION['username'] !== 'admin') {
    echo json_encode(['success' => false, 'error' => '无权限']);
    exit;
}

$input = json_decode(file_get_contents('php://input'), true);

if ($input && isset($input['image_id'])) {
    try {
        // 先获取文件名以便删除物理文件
        $stmt = $pdo->prepare("SELECT filename FROM images WHERE id = ?");
        $stmt->execute([$input['image_id']]);
        $image = $stmt->fetch(PDO::FETCH_ASSOC);
        
        if ($image) {
            // 删除数据库记录（会级联删除关联的标签）
            $stmt = $pdo->prepare("DELETE FROM images WHERE id = ?");
            $stmt->execute([$input['image_id']]);
            
            // 删除物理文件
            $file_path = '../uploads/' . $image['filename'];
            if (file_exists($file_path)) {
                unlink($file_path);
            }
        }
        
        echo json_encode(['success' => true]);
    } catch(PDOException $e) {
        echo json_encode(['success' => false, 'error' => $e->getMessage()]);
    }
} else {
    echo json_encode(['success' => false, 'error' => '无效请求']);
}
?>