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Add Gemini API as an AI provider

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This commit is contained in:
Wojtek
2026-10-16 22:41:08 +02:00
parent 8045698072
commit 686e927249
13 changed files with 89 additions and 28 deletions
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administrator/components/com_testquestions/src/Service/AiService.php
+44 -16
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@@ -28,6 +28,10 @@ class AiService
'openai/gpt-oss-20b' => 'GPT OSS 20B',
'llama-3.3-70b-versatile' => 'Llama 3.3 70B Versatile',
],
'gemini' => [
'gemini-3.8-flash' => 'Gemini 3.8 Flash',
'gemini-3.1-pro-preview' => 'Gemini 3.1 Pro (Preview)',
],
];
}
@@ -38,6 +42,7 @@ class AiService
$config = match ($provider) {
'grok' => ['url' => 'https://api.x.ai/v1/responses'],
'groq' => ['url' => 'https://api.groq.com/openai/v1/chat/completions'],
'gemini' => ['url' => 'https://generativelanguage.googleapis.com/v1beta/models/' . rawurlencode($model) . ':generateContent'],
default => ['url' => 'https://api.openai.com/v1/responses'],
};
@@ -45,7 +50,7 @@ class AiService
throw new \RuntimeException('AI_NOT_CONFIGURED');
}
if (!in_array($provider, ['openai', 'grok', 'groq'], true)) {
if (!in_array($provider, ['openai', 'grok', 'groq', 'gemini'], true)) {
throw new \RuntimeException('Nieprawidłowy dostawca AI: ' . $provider);
}
@@ -61,29 +66,40 @@ class AiService
. "Odpowiedź ucznia:\n" . ($answer !== '' ? $answer : 'Brak odpowiedzi') . "\n\n"
. "Zwróć wyłącznie poprawny obiekt JSON w formacie {\"awarded_points\": liczba_całkowita, \"feedback\": \"krótka ocena po polsku\"}. W ocenie opisz poprawne i brakujące elementy. Nie zmieniaj wzorca odpowiedzi.";
$requestData = $provider === 'groq'
? [
$requestData = match ($provider) {
'groq' => [
'model' => $model,
'messages' => [['role' => 'user', 'content' => $input]],
'temperature' => 0.1,
]
: [
],
'gemini' => [
'contents' => [['parts' => [['text' => $input]]]],
'generationConfig' => ['responseMimeType' => 'application/json'],
],
default => [
'model' => $model,
'input' => $input,
];
],
};
// GPT-5.x reasoning models do not accept a custom temperature.
if ($provider === 'grok' || ($provider === 'openai' && $model === 'gpt-4.1-mini')) {
$requestData['temperature'] = 0.1;
}
$payload = json_encode($requestData, JSON_UNESCAPED_UNICODE);
$headers = [
'Content-Type' => 'application/json',
];
if ($provider === 'gemini') {
$headers['x-goog-api-key'] = trim($apiKey);
} else {
$headers['Authorization'] = 'Bearer ' . trim($apiKey);
}
$response = HttpFactory::getHttp()->post(
$config['url'],
$payload,
[
'Authorization' => 'Bearer ' . trim($apiKey),
'Content-Type' => 'application/json',
],
$headers,
60
);
$body = json_decode((string) $response->body, true);
@@ -132,13 +148,15 @@ class AiService
return null;
}
$inputTokens = max(0, (int) ($usage['input_tokens'] ?? $usage['prompt_tokens'] ?? 0));
$outputTokens = max(0, (int) ($usage['output_tokens'] ?? $usage['completion_tokens'] ?? 0));
if ((!isset($usage['input_tokens']) && !isset($usage['prompt_tokens']))
|| (!isset($usage['output_tokens']) && !isset($usage['completion_tokens']))) {
$inputTokens = max(0, (int) ($usage['input_tokens'] ?? $usage['prompt_tokens'] ?? $usage['promptTokenCount'] ?? 0));
$outputTokens = max(0, (int) ($usage['output_tokens'] ?? $usage['completion_tokens'] ?? (
(int) ($usage['candidatesTokenCount'] ?? 0) + (int) ($usage['thoughtsTokenCount'] ?? 0)
)));
if ((!isset($usage['input_tokens']) && !isset($usage['prompt_tokens']) && !isset($usage['promptTokenCount']))
|| (!isset($usage['output_tokens']) && !isset($usage['completion_tokens']) && !isset($usage['candidatesTokenCount']))) {
return null;
}
$cachedTokens = min($inputTokens, max(0, (int) ($usage['input_tokens_details']['cached_tokens'] ?? 0)));
$cachedTokens = min($inputTokens, max(0, (int) ($usage['input_tokens_details']['cached_tokens'] ?? $usage['cachedContentTokenCount'] ?? 0)));
$cost = null;
$costSource = '';
@@ -159,7 +177,7 @@ class AiService
'model' => $model,
'input_tokens' => $inputTokens,
'output_tokens' => $outputTokens,
'total_tokens' => (int) ($usage['total_tokens'] ?? ($inputTokens + $outputTokens)),
'total_tokens' => (int) ($usage['total_tokens'] ?? $usage['totalTokenCount'] ?? ($inputTokens + $outputTokens)),
'cached_input_tokens' => $cachedTokens,
'cost_usd' => $cost,
'cost_source' => $costSource,
@@ -179,6 +197,16 @@ class AiService
private function extractText(array $body): string
{
if (isset($body['candidates'][0]['content']['parts']) && is_array($body['candidates'][0]['content']['parts'])) {
$parts = [];
foreach ($body['candidates'][0]['content']['parts'] as $part) {
if (isset($part['text']) && is_string($part['text'])) {
$parts[] = $part['text'];
}
}
return trim(implode("\n", $parts));
}
if (isset($body['choices'][0]['message']['content']) && is_string($body['choices'][0]['message']['content'])) {
return trim($body['choices'][0]['message']['content']);
}