test_ollama.php

<?php
/**
 * Ollama Connection Test Script
 * This script helps debug Ollama integration issues
 */

echo "<h1>🔍 Ollama Connection Test</h1>";
echo "<hr>";

// Test 1: Check if Ollama is running
echo "<h2>1. Checking Ollama Server...</h2>";
$ollama_url = "http://localhost:11434/api/tags";

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => $ollama_url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 5,
    CURLOPT_CONNECTTIMEOUT => 5,
]);

$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$curl_error = curl_error($ch);
curl_close($ch);

if($curl_error) {
    echo "<p style='color:red'>❌ Connection Error: $curl_error</p>";
    echo "<p><strong>Solution:</strong> Make sure Ollama is running. Download from <a href='https://ollama.ai'>ollama.ai</a> and run it.</p>";
} elseif($http_code === 200) {
    echo "<p style='color:green'>✅ Ollama Server is Running!</p>";
    $tags = json_decode($response, true);
    
    echo "<h3>Available Models:</h3>";
    if(isset($tags['models']) && is_array($tags['models'])) {
        echo "<ul>";
        foreach($tags['models'] as $model) {
            $name = $model['name'] ?? 'Unknown';
            $size = isset($model['size']) ? round($model['size'] / (1024*1024*1024), 2) . ' GB' : 'Unknown';
            echo "<li><strong>$name</strong> ($size)</li>";
        }
        echo "</ul>";
    } else {
        echo "<p style='color:orange'>⚠️ No models installed</p>";
        echo "<p><strong>Install models with:</strong></p>";
        echo "<pre>ollama pull mistral
ollama pull llama3
ollama pull phi3</pre>";
    }
} else {
    echo "<p style='color:red'>❌ Ollama returned HTTP $http_code</p>";
    echo "<p>Response: " . htmlspecialchars($response) . "</p>";
}

echo "<hr>";

// Test 2: Test with a specific model
echo "<h2>2. Testing Model Generation...</h2>";

$test_model = "mistral"; // Change this to test different models
echo "<p>Testing model: <strong>$test_model</strong></p>";

$payload = json_encode([
    'model' => $test_model,
    'prompt' => 'In one sentence, what is PHP?',
    'stream' => false,
    'temperature' => 0.3
]);

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "http://localhost:11434/api/generate",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 60,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => $payload,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json']
]);

echo "<p>Sending request (this may take 10-30 seconds)...</p>";
$start_time = microtime(true);

$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$curl_error = curl_error($ch);
curl_close($ch);

$elapsed = round(microtime(true) - $start_time, 2);

if($curl_error) {
    echo "<p style='color:red'>❌ Generation Error: $curl_error</p>";
} elseif($http_code !== 200) {
    echo "<p style='color:red'>❌ HTTP Error $http_code</p>";
    echo "<p>Response: " . htmlspecialchars($response) . "</p>";
} else {
    echo "<p style='color:green'>✅ Generation Successful! (${elapsed}s)</p>";
    $decoded = json_decode($response, true);
    
    echo "<h3>Raw Response Structure:</h3>";
    echo "<pre>" . htmlspecialchars(json_encode($decoded, JSON_PRETTY_PRINT)) . "</pre>";
    
    if(isset($decoded['response'])) {
        echo "<h3>Generated Text:</h3>";
        echo "<p>" . htmlspecialchars($decoded['response']) . "</p>";
    }
}

echo "<hr>";

// Test 3: Configuration Check
echo "<h2>3. Configuration Check</h2>";
require_once 'includes/.env.php';

echo "<table style='border-collapse: collapse; width: 100%;'>";
echo "<tr style='background: #f0f0f0;'><th style='border: 1px solid #ccc; padding: 8px;'>Setting</th><th style='border: 1px solid #ccc; padding: 8px;'>Value</th></tr>";

echo "<tr><td style='border: 1px solid #ccc; padding: 8px;'>USE_OLLAMA</td>";
echo "<td style='border: 1px solid #ccc; padding: 8px;'>" . (defined('USE_OLLAMA') ? (USE_OLLAMA ? '✅ TRUE' : '❌ FALSE') : 'Not defined') . "</td></tr>";

echo "<tr><td style='border: 1px solid #ccc; padding: 8px;'>OLLAMA_MODEL</td>";
echo "<td style='border: 1px solid #ccc; padding: 8px;'>" . (defined('OLLAMA_MODEL') ? OLLAMA_MODEL : 'Not defined') . "</td></tr>";

echo "<tr><td style='border: 1px solid #ccc; padding: 8px;'>OLLAMA_BASE_URL</td>";
echo "<td style='border: 1px solid #ccc; padding: 8px;'>" . (defined('OLLAMA_BASE_URL') ? OLLAMA_BASE_URL : 'Not defined') . "</td></tr>";

echo "</table>";

echo "<hr>";
echo "<h2>✅ Test Complete</h2>";
echo "<p><a href='admin/descriptive_test_evaluation.php'>Back to Descriptive Test Evaluation</a></p>";
?>