Files
fuel-price/app/Services/LlmPrediction/GeminiPredictionProvider.php
Ovidiu U e39618f5df refactor: extract AbstractLlmPredictionProvider for shared boilerplate
Anthropic, Gemini, and OpenAi providers each repeated: API-key gate,
chronological price-list building, response validation
(direction/confidence/reasoning), TrendDirection::tryFrom, confidence
cap at 85, and the top-level try/catch + Log::error.

Now in AbstractLlmPredictionProvider:
- LLM_MAX_CONFIDENCE constant
- buildPriceList(Collection) helper
- buildPrediction(input, ?source) — handles direction validation,
  confidence cap, model construction
- defaultPrompt(priceList) — shared by Gemini and OpenAi
- Default predict() flow (apiKey + callProvider + buildPrediction +
  try/catch). Gemini and OpenAi only implement apiKey() and
  callProvider(). Anthropic overrides predict() because of its
  multi-phase web-search + forced-tool flow but reuses the helpers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-29 19:35:57 +01:00

61 lines
2.1 KiB
PHP

<?php
namespace App\Services\LlmPrediction;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
class GeminiPredictionProvider extends AbstractLlmPredictionProvider
{
protected function apiKey(): ?string
{
return config('services.gemini.api_key');
}
protected function callProvider(string $apiKey, string $priceList): ?array
{
$model = config('services.gemini.model', 'gemini-2.0-flash');
$url = "https://generativelanguage.googleapis.com/v1beta/models/{$model}:generateContent";
$response = $this->apiLogger->send('gemini', 'POST', $url, fn () => Http::timeout(15)
->withQueryParameters(['key' => $apiKey])
->post($url, [
'contents' => [[
'parts' => [['text' => $this->defaultPrompt($priceList)]],
]],
'generationConfig' => [
'responseMimeType' => 'application/json',
'responseSchema' => [
'type' => 'OBJECT',
'properties' => [
'direction' => [
'type' => 'STRING',
'enum' => ['rising', 'falling', 'flat'],
],
'confidence' => ['type' => 'INTEGER'],
'reasoning' => ['type' => 'STRING'],
],
'required' => ['direction', 'confidence', 'reasoning'],
],
],
]));
if (! $response->successful()) {
Log::error(self::class.': request failed', ['status' => $response->status()]);
return null;
}
$text = $response->json('candidates.0.content.parts.0.text') ?? '';
$data = json_decode($text, true);
if (! isset($data['direction'], $data['confidence'], $data['reasoning'])) {
Log::error(self::class.': unexpected response format', ['text' => $text]);
return null;
}
return $data;
}
}