import { createMistral } from '@ai-sdk/mistral';
import { wrapLanguageModel } from 'ai';
import { createMistralV4Middleware } from '@ai-billing/mistral';
import {
  consoleDestination,
  createObjectPriceResolver,
  type ModelPricing,
} from '@ai-billing/core';

const mistral = createMistral({ apiKey: process.env.MISTRAL_API_KEY });

const customPricingMap: Record<string, ModelPricing> = {
  'mistral-large-latest': {
    promptTokens: 2.0 / 1_000_000,
    completionTokens: 6.0 / 1_000_000,
  },
  'mistral-small-latest': {
    promptTokens: 0.1 / 1_000_000,
    completionTokens: 0.3 / 1_000_000,
  },
};

const priceResolver = createObjectPriceResolver(customPricingMap);

const billingMiddleware = createMistralV4Middleware({
  destinations: [consoleDestination()],
  priceResolver,
});

const wrappedModel = wrapLanguageModel({
  model: mistral('mistral-large-latest'),
  middleware: billingMiddleware,
});