import { createOpenAI } from '@ai-sdk/openai';
import type { LanguageModel } from 'ai';
import { BaseProvider } from '~/lib/modules/llm/base-provider';
import type { ModelInfo } from '~/lib/modules/llm/types';
import type { IProviderSetting } from '~/types/model';

export default class PerplexityProvider extends BaseProvider {
  name = 'Perplexity';
  getApiKeyLink = 'https://www.perplexity.ai/settings/api';

  staticModels: ModelInfo[] = [
    {
      name: 'llama-3.1-sonar-small-128k-online',
      label: 'Sonar Small Online',
      provider: 'Perplexity',
      maxTokenAllowed: 8192,
    },
    {
      name: 'llama-3.1-sonar-large-128k-online',
      label: 'Sonar Large Online',
      provider: 'Perplexity',
      maxTokenAllowed: 8192,
    },
    {
      name: 'llama-3.1-sonar-huge-128k-online',
      label: 'Sonar Huge Online',
      provider: 'Perplexity',
      maxTokenAllowed: 8192,
    },
  ];

  getModelInstance(options: { model: string; providerSettings?: Record<string, IProviderSetting> }): LanguageModel {
    const { model, providerSettings } = options;

    const { apiKey } = this.getProviderBaseUrlAndKey(providerSettings?.[this.name]);

    if (!apiKey) {
      throw new Error(`Missing API key for ${this.name} provider`);
    }

    const perplexity = createOpenAI({
      baseURL: 'https://api.perplexity.ai/',
      apiKey,
    });

    return perplexity(model);
  }
}