nano-pro/debug_request.php

<?php
session_start();
require_once 'config.php';

echo "<style>
body { font-family: monospace; background: #000; color: #0f0; padding: 20px; }
h2, h3 { color: #0ff; }
pre { background: #111; padding: 15px; border-left: 3px solid #0f0; overflow-x: auto; }
.error { color: #f00; }
.success { color: #0f0; }
.warning { color: #ff0; }
img { background: #fff; padding: 10px; }
</style>";

echo "<h2>🔍 Gemini API Diagnostic Tool</h2>";

// Test 1: Check API key
echo "<h3>Test 1: API Key Check</h3>";
$apiKey = GEMINI_API_KEY;
if (empty($apiKey)) {
    echo "<p class='error'>❌ No API key configured!</p>";
    exit;
} else {
    echo "<p class='success'>✅ API Key: " . substr($apiKey, 0, 10) . "..." . substr($apiKey, -6) . "</p>";
}

// Test 2: Try to list available models
echo "<h3>Test 2: Check Available Models</h3>";
$listUrl = 'https://generativelanguage.googleapis.com/v1beta/models';
$ch = curl_init($listUrl . '?key=' . $apiKey);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$modelsResponse = curl_exec($ch);
$modelsData = json_decode($modelsResponse, true);
curl_close($ch);

if (isset($modelsData['models'])) {
    echo "<p class='success'>✅ API connection successful!</p>";
    echo "<p>Available models with IMAGE generation:</p><ul>";
    foreach ($modelsData['models'] as $model) {
        if (isset($model['supportedGenerationMethods']) &&
            in_array('generateContent', $model['supportedGenerationMethods'])) {
            $modelName = $model['name'];
            $displayName = $model['displayName'] ?? $modelName;
            // Check if model supports image generation
            if (stripos($modelName, 'imagen') !== false ||
                stripos($displayName, 'image') !== false ||
                stripos($modelName, 'gemini') !== false) {
                echo "<li><strong>$modelName</strong> - $displayName</li>";
            }
        }
    }
    echo "</ul>";
} else {
    echo "<p class='error'>❌ Could not fetch models. Response:</p>";
    echo "<pre>" . json_encode($modelsData, JSON_PRETTY_PRINT) . "</pre>";
}

// Test 3: Try the image generation with the current model
echo "<h3>Test 3: Image Generation Test</h3>";
$model = 'gemini-3-pro-image-preview';
$url = "https://generativelanguage.googleapis.com/v1beta/models/{$model}:generateContent";

$payload = [
    'contents' => [
        [
            'parts' => [
                ['text' => 'A simple red circle on white background']
            ]
        ]
    ],
    'generationConfig' => [
        'responseModalities' => ['IMAGE'],
        'imageConfig' => [
            'aspectRatio' => '1:1',
            'imageSize' => '1K'
        ]
    ]
];

echo "<p><strong>Model:</strong> $model</p>";
echo "<p><strong>URL:</strong> $url</p>";
echo "<details><summary>Request Payload (click to expand)</summary>";
echo "<pre>" . json_encode($payload, JSON_PRETTY_PRINT) . "</pre>";
echo "</details>";

$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'x-goog-api-key: ' . $apiKey
    ],
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => json_encode($payload),
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYPEER => true,
    CURLOPT_TIMEOUT => 120
]);

echo "<p>⏳ Sending request...</p>";
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$curlError = curl_error($ch);
curl_close($ch);

echo "<p><strong>HTTP Status Code:</strong> ";
if ($httpCode == 200) {
    echo "<span class='success'>$httpCode ✅</span></p>";
} else {
    echo "<span class='error'>$httpCode ❌</span></p>";
}

if ($curlError) {
    echo "<p class='error'><strong>cURL Error:</strong> $curlError</p>";
}

$responseData = json_decode($response, true);
echo "<details><summary>Full Response (click to expand)</summary>";
echo "<pre>" . json_encode($responseData, JSON_PRETTY_PRINT) . "</pre>";
echo "</details>";

// Check for specific error messages
if (isset($responseData['error'])) {
    echo "<h3 class='error'>❌ API Error Details:</h3>";
    echo "<pre>" . json_encode($responseData['error'], JSON_PRETTY_PRINT) . "</pre>";

    if (isset($responseData['error']['message'])) {
        $errorMsg = $responseData['error']['message'];
        echo "<p class='warning'><strong>Error Message:</strong> $errorMsg</p>";

        // Provide helpful suggestions
        if (stripos($errorMsg, 'not found') !== false || stripos($errorMsg, 'models/') !== false) {
            echo "<p class='warning'>💡 Suggestion: The model name might be incorrect or deprecated.</p>";
        } elseif (stripos($errorMsg, 'quota') !== false || stripos($errorMsg, 'limit') !== false) {
            echo "<p class='warning'>💡 Suggestion: You may have exceeded your API quota.</p>";
        } elseif (stripos($errorMsg, 'internal') !== false) {
            echo "<p class='warning'>💡 Suggestion: This might be a temporary API issue or the model is having problems.</p>";
        }
    }
}

// Check for image in response
if (isset($responseData['candidates'][0]['content']['parts'][0]['inlineData']['data'])) {
    echo "<h3 class='success'>✅ SUCCESS! Image Generated!</h3>";
    $imageData = $responseData['candidates'][0]['content']['parts'][0]['inlineData']['data'];
    $mimeType = $responseData['candidates'][0]['content']['parts'][0]['inlineData']['mimeType'];
    echo "<p><strong>MIME Type:</strong> $mimeType</p>";
    echo "<p><strong>Data length:</strong> " . strlen($imageData) . " characters</p>";
    echo "<h3>Generated Image:</h3>";
    echo "<img src='data:$mimeType;base64,$imageData' style='max-width: 500px; border: 3px solid #0f0;'>";
} else {
    echo "<h3 class='error'>❌ No Image Data Found</h3>";
}

echo "<hr><p><em>Debug completed at " . date('Y-m-d H:i:s') . "</em></p>";
?>