<?php

namespace Laravel\Ai\Providers;

use Illuminate\Contracts\Events\Dispatcher;
use Laravel\Ai\Contracts\Gateway\EmbeddingGateway;
use Laravel\Ai\Contracts\Gateway\StepTextGateway;
use Laravel\Ai\Contracts\Providers\EmbeddingProvider;
use Laravel\Ai\Contracts\Providers\TextProvider;
use Laravel\Ai\Gateway\Ollama\OllamaGateway;

class OllamaProvider extends Provider implements EmbeddingProvider, TextProvider
{
    use Concerns\GeneratesEmbeddings;
    use Concerns\GeneratesText;
    use Concerns\HasEmbeddingGateway;
    use Concerns\HasTextGateway;
    use Concerns\StreamsText;

    protected ?OllamaGateway $ollamaGateway = null;

    public function __construct(protected array $config, protected Dispatcher $events)
    {
        //
    }

    /**
     * Get the credentials for the Ollama provider (API key is optional).
     */
    #[\Override]
    public function providerCredentials(): array
    {
        return [
            'key' => $this->config['key'] ?? '',
        ];
    }

    /**
     * Get the shared Ollama gateway instance.
     */
    protected function ollamaGateway(): OllamaGateway
    {
        return $this->ollamaGateway ??= new OllamaGateway($this->events);
    }

    /**
     * Get the provider's text gateway.
     */
    public function textGateway(): StepTextGateway
    {
        return $this->textGateway ??= $this->ollamaGateway();
    }

    /**
     * Get the provider's embedding gateway.
     */
    public function embeddingGateway(): EmbeddingGateway
    {
        return $this->embeddingGateway ??= $this->ollamaGateway();
    }

    /**
     * Get the name of the default text model.
     */
    public function defaultTextModel(): string
    {
        return $this->config['models']['text']['default'] ?? 'qwen3.5:4b';
    }

    /**
     * Get the name of the cheapest text model.
     */
    public function cheapestTextModel(): string
    {
        return $this->config['models']['text']['cheapest'] ?? 'qwen3.5:0.8b';
    }

    /**
     * Get the name of the smartest text model.
     */
    public function smartestTextModel(): string
    {
        return $this->config['models']['text']['smartest'] ?? 'qwen3.5:cloud';
    }

    /**
     * Get the name of the default embeddings model.
     */
    public function defaultEmbeddingsModel(): string
    {
        return $this->config['models']['embeddings']['default'] ?? 'nomic-embed-text';
    }

    /**
     * Get the default dimensions of the default embeddings model.
     */
    public function defaultEmbeddingsDimensions(): int
    {
        return $this->config['models']['embeddings']['dimensions'] ?? 768;
    }
}