<?php

declare(strict_types=1);

namespace WordPress\GroqAiProvider\Provider;

use WordPress\AiClient\AiClient;
use WordPress\AiClient\Common\Exception\RuntimeException;
use WordPress\AiClient\Providers\ApiBasedImplementation\AbstractApiProvider;
use WordPress\AiClient\Providers\ApiBasedImplementation\ListModelsApiBasedProviderAvailability;
use WordPress\AiClient\Providers\Contracts\ModelMetadataDirectoryInterface;
use WordPress\AiClient\Providers\Contracts\ProviderAvailabilityInterface;
use WordPress\AiClient\Providers\DTO\ProviderMetadata;
use WordPress\AiClient\Providers\Enums\ProviderTypeEnum;
use WordPress\AiClient\Providers\Http\Enums\RequestAuthenticationMethod;
use WordPress\AiClient\Providers\Models\Contracts\ModelInterface;
use WordPress\AiClient\Providers\Models\DTO\ModelMetadata;
use WordPress\GroqAiProvider\Metadata\GroqModelMetadataDirectory;
use WordPress\GroqAiProvider\Models\GroqTextGenerationModel;

/**
 * Class for the AI Provider for Groq.
 *
 * @since 1.0.0
 */
class GroqProvider extends AbstractApiProvider
{
    /**
     * {@inheritDoc}
     *
     * @since 1.0.0
     */
    protected static function baseUrl(): string
    {
        return 'https://api.groq.com/openai/v1';
    }

    /**
     * {@inheritDoc}
     *
     * @since 1.0.0
     */
    protected static function createModel(
        ModelMetadata $modelMetadata,
        ProviderMetadata $providerMetadata
    ): ModelInterface {
        $capabilities = $modelMetadata->getSupportedCapabilities();
        foreach ($capabilities as $capability) {
            if ($capability->isTextGeneration()) {
                return new GroqTextGenerationModel($modelMetadata, $providerMetadata);
            }
        }

        // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped -- Internal exception message, never rendered as HTML output.
        throw new RuntimeException(
            'Unsupported model capabilities: ' . implode(', ', $capabilities)
        );
    }

    /**
     * {@inheritDoc}
     *
     * @since 1.0.0
     */
    protected static function createProviderMetadata(): ProviderMetadata
    {
        $providerMetadataArgs = [
            'groq',
            'Groq',
            ProviderTypeEnum::cloud(),
            'https://console.groq.com/keys',
            RequestAuthenticationMethod::apiKey()
        ];
        // Provider description support was added in 1.2.0.
        if (version_compare(AiClient::VERSION, '1.2.0', '>=')) {
            // For WordPress, we should translate the description.
            if (function_exists('__')) {
                $providerMetadataArgs[] = __('Fast text generation with Llama, Mixtral, and more.', 'ai-provider-for-groq');
            } else {
                $providerMetadataArgs[] = 'Fast text generation with Llama, Mixtral, and more.';
            }
        }
        // Provider logoPath support was added in 1.3.0.
        if (version_compare(AiClient::VERSION, '1.3.0', '>=')) {
            $providerMetadataArgs[] = dirname(__DIR__, 2) . '/assets/images/groq.svg';
        }
        return new ProviderMetadata(...$providerMetadataArgs);
    }

    /**
     * {@inheritDoc}
     *
     * @since 1.0.0
     */
    protected static function createProviderAvailability(): ProviderAvailabilityInterface
    {
        // Check valid API access by attempting to list models.
        return new ListModelsApiBasedProviderAvailability(
            static::modelMetadataDirectory()
        );
    }

    /**
     * {@inheritDoc}
     *
     * @since 1.0.0
     */
    protected static function createModelMetadataDirectory(): ModelMetadataDirectoryInterface
    {
        return new GroqModelMetadataDirectory();
    }
}