first commit

api/api.php

@@ -0,0 +1,50 @@
+<?php
+try {
+    require_once __DIR__.'/../includes/config.php';
+    require_once __DIR__.'/../includes/db.php';
+    require_once __DIR__.'/../includes/api_functions.php';
+
+    header('Content-Type: application/json; charset=utf-8');
+
+    // 获取并验证参数
+    $params = validateRequestParams();
+    
+    // 构建查询语句
+    $query = buildImageQuery($params);
+    
+    // 获取随机图片
+    $image = fetchRandomImage($pdo, $query, $params);
+    
+    // 处理结果
+    if ($image) {
+        // 直接跳转模式
+        if (isset($_GET['redirect']) && $_GET['redirect'] === 'true') {
+    // 验证URL有效性
+    if (filter_var($image['url'], FILTER_VALIDATE_URL)) {
+        header("Location: " . $image['url']);
+    } else {
+        http_response_code(500);
+        echo jsonError('无效的图片URL');
+    }
+    exit;
+}
+        
+        // 正常JSON响应
+        echo jsonResponse([
+            'url' => $image['url'],
+            'resolution' => $params['resolution'],
+            'category' => $params['category']
+        ]);
+    } else {
+        echo jsonError('未找到匹配的图片', 404);
+    }
+
+} catch (InvalidArgumentException $e) {
+    echo jsonError($e->getMessage(), 400);
+} catch (PDOException $e) {
+    error_log("Database Error: " . $e->getMessage());
+    echo jsonError('数据库查询失败', 500);
+} catch (Exception $e) {
+    error_log("System Error: " . $e->getMessage());
+    echo jsonError('系统繁忙，请稍后再试', 500);
+}