From d60458ad352bd7b72c4c6c85c83642559e4eaaf3 Mon Sep 17 00:00:00 2001
From: klarkxy <278370456@qq.com>
Date: Fri, 29 May 2026 16:10:50 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=88=87=E6=8D=A2=20AI=20=E7=82=B9?=
 =?UTF-8?q?=E8=AF=84=E8=87=B3=20Anthropic=20=E5=85=BC=E5=AE=B9=20API?=
 =?UTF-8?q?=EF=BC=88MiniMax=EF=BC=89?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 将默认 LLM API 地址改为 MiniMax Anthropic 兼容格式
- 更新默认模型为 MiniMax-M2.7，max_tokens 改为 65536，超时改为 60 秒
- 请求体改为 Anthropic 格式：system prompt 提到顶层，temperature 调整为 1.0
- HTTP 头改用 x-api-key 和 anthropic-version
- 响应解析适配 Anthropic 返回的 content 数组结构
---
 web/include/db_info.inc.php | 10 +++++-----
 web/llm-review.php          | 33 +++++++++++++++++++++------------
 2 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/web/include/db_info.inc.php b/web/include/db_info.inc.php
index 251fe61..6291506 100644
--- a/web/include/db_info.inc.php
+++ b/web/include/db_info.inc.php
@@ -147,11 +147,11 @@ static $OJ_MENU_NEWS=true;
 
 /* LLM AI Review - AI错误点评功能 */
 static $OJ_LLM_ENABLED=false;              // 总开关，设为true开启AI点评
-static $OJ_LLM_API_URL="https://api.openai.com/v1/chat/completions"; // API地址（兼容OpenAI格式）
-static $OJ_LLM_API_KEY="";                 // 填入你的API Key
-static $OJ_LLM_MODEL="gpt-4o-mini";        // 模型名称
-static $OJ_LLM_MAX_TOKENS=1024;            // 最大输出token数
-static $OJ_LLM_TIMEOUT=30;                 // 请求超时（秒）
+static $OJ_LLM_API_URL="https://api.minimaxi.com/anthropic/v1/messages"; // API地址（MiniMax Anthropic兼容格式）
+static $OJ_LLM_API_KEY="sk-cp-w571CJpA_6WP5P6b_xGVbjOqXOGBWTQsiNY9xxAPambouIhD7ic3GHIoWce0ON_Y7Q0rVLzBWtgwwS8cQVUxS1guBxYkPJoJ33q0jEcx0Qei60bx5La4fB4";                 // 填入你的MiniMax API Key
+static $OJ_LLM_MODEL="MiniMax-M2.7";       // 模型名称，如 MiniMax-M2.7 / MiniMax-M2.5 / MiniMax-M2.5-highspeed
+static $OJ_LLM_MAX_TOKENS=65536;            // 最大输出token数
+static $OJ_LLM_TIMEOUT=60;                 // 请求超时（秒），LLM响应较慢建议60秒
 static $OJ_LLM_SYSTEM_PROMPT="";           // 自定义系统prompt，留空使用内置默认
 
 require_once(dirname(__FILE__) . "/pdo.php");
diff --git a/web/llm-review.php b/web/llm-review.php
index 7f1c73e..90c04fc 100644
--- a/web/llm-review.php
+++ b/web/llm-review.php
@@ -140,25 +140,26 @@ if (!empty($reference_code)) {
 $user_prompt .= "\n请分析学生的错误，给出启发性的提示和引导，帮助学生自己发现问题并改正。\n";
 
 // ---- 8. 调用 LLM API ----
-$api_url = isset($OJ_LLM_API_URL) ? $OJ_LLM_API_URL : "https://api.openai.com/v1/chat/completions";
+$api_url = isset($OJ_LLM_API_URL) ? $OJ_LLM_API_URL : "https://api.minimaxi.com/anthropic/v1/messages";
 $api_key = isset($OJ_LLM_API_KEY) ? $OJ_LLM_API_KEY : "";
-$model = isset($OJ_LLM_MODEL) ? $OJ_LLM_MODEL : "gpt-4o-mini";
+$model = isset($OJ_LLM_MODEL) ? $OJ_LLM_MODEL : "MiniMax-M2.5";
 $max_tokens = isset($OJ_LLM_MAX_TOKENS) ? intval($OJ_LLM_MAX_TOKENS) : 1024;
-$timeout = isset($OJ_LLM_TIMEOUT) ? intval($OJ_LLM_TIMEOUT) : 30;
+$timeout = isset($OJ_LLM_TIMEOUT) ? intval($OJ_LLM_TIMEOUT) : 60;
 
 if (empty($api_key)) {
     echo json_encode(["error" => "API Key未配置"], JSON_UNESCAPED_UNICODE);
     exit;
 }
 
+// ---- Anthropic API 兼容格式 ----
 $request_body = json_encode([
     "model" => $model,
-    "messages" => [
-        ["role" => "system", "content" => $system_prompt],
-        ["role" => "user", "content" => $user_prompt]
-    ],
     "max_tokens" => $max_tokens,
-    "temperature" => 0.7
+    "system" => $system_prompt,
+    "temperature" => 1.0,
+    "messages" => [
+        ["role" => "user", "content" => $user_prompt]
+    ]
 ]);
 
 $ch = curl_init($api_url);
@@ -167,7 +168,8 @@ curl_setopt_array($ch, [
     CURLOPT_POSTFIELDS => $request_body,
     CURLOPT_HTTPHEADER => [
         "Content-Type: application/json",
-        "Authorization: Bearer " . $api_key
+        "x-api-key: " . $api_key,
+        "anthropic-version: 2023-06-01"
     ],
     CURLOPT_RETURNTRANSFER => true,
     CURLOPT_TIMEOUT => $timeout,
@@ -190,13 +192,20 @@ if ($http_code !== 200) {
 }
 
 $resp_data = json_decode($response, true);
-if (!$resp_data || !isset($resp_data['choices'][0]['message']['content'])) {
+// Anthropic 响应格式: content 是一个数组，取 type=text 的块
+$review_text = "";
+if ($resp_data && isset($resp_data['content']) && is_array($resp_data['content'])) {
+    foreach ($resp_data['content'] as $block) {
+        if (isset($block['type']) && $block['type'] === 'text' && isset($block['text'])) {
+            $review_text .= $block['text'];
+        }
+    }
+}
+if (empty($review_text)) {
     echo json_encode(["error" => "API返回格式异常"], JSON_UNESCAPED_UNICODE);
     exit;
 }
 
-$review_text = $resp_data['choices'][0]['message']['content'];
-
 // ---- 9. 缓存结果 ----
 // 自动建表（首次调用时）
 pdo_query("CREATE TABLE IF NOT EXISTS `llm_review` (