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

echo "=== 测试Dify配置 ===\n\n";

echo "AI_PROVIDER: " . AI_PROVIDER . "\n";
echo "DIFY_API_KEY: " . DIFY_API_KEY . "\n";
echo "DIFY_API_BASE: " . DIFY_API_BASE . "\n";
echo "DIFY_USER: " . DIFY_USER . "\n\n";

// 测试请求
$url = rtrim(DIFY_API_BASE, '/') . '/chat-messages';
echo "请求URL: {$url}\n\n";

$headers = [
    'Content-Type: application/json',
    'Authorization: Bearer ' . DIFY_API_KEY,
];

$payload = [
    'inputs' => (object)[],  // 空对象
    'query' => '你好',
    'response_mode' => 'blocking',
    'user' => DIFY_USER,
];

echo "请求数据:\n";
echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT) . "\n\n";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload, JSON_UNESCAPED_UNICODE));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_VERBOSE, true);  // 开启详细输出

echo "发送请求...\n";
$response = curl_exec($ch);
$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$error = curl_error($ch);
curl_close($ch);

echo "HTTP状态码: {$statusCode}\n";
echo "响应内容长度: " . strlen($response) . " 字节\n";

if ($error) {
    echo "cURL错误: {$error}\n";
}

echo "\n响应内容:\n";
if (empty($response)) {
    echo "(空响应)\n\n";
} else {
    echo $response . "\n\n";
}

if ($statusCode == 200) {
    if (empty($response)) {
        echo "✗ 响应为空\n\n";
        echo "可能的原因：\n";
        echo "1. Dify应用未发布或已停用\n";
        echo "2. API Key不正确\n";
        echo "3. response_mode='blocking' 不支持（试试改成 'streaming'）\n";
        echo "4. Dify服务器问题\n";
    } else {
        $data = json_decode($response, true);
        if (json_last_error() !== JSON_ERROR_NONE) {
            echo "✗ JSON解析失败: " . json_last_error_msg() . "\n";
        } elseif (isset($data['answer'])) {
            echo "✓ 成功！AI回复: " . $data['answer'] . "\n";
        } else {
            echo "✗ 响应格式错误\n";
            echo "JSON内容: " . print_r($data, true) . "\n";
        }
    }
} else {
    echo "✗ 请求失败（HTTP {$statusCode}）\n";
}