import { createMoonshotAI } from '@ai-sdk/moonshotai';
import { wrapLanguageModel } from 'ai';
import { createMoonshotaiV4Middleware } from '@ai-billing/moonshotai';
import {
  consoleDestination,
  createObjectPriceResolver,
  type ModelPricing,
} from '@ai-billing/core';

const moonshotai = createMoonshotAI({ apiKey: process.env.MOONSHOT_API_KEY });

const customPricingMap: Record<string, ModelPricing> = {
  'kimi-k3': {
    promptTokens: 3.0 / 1_000_000,
    completionTokens: 15.0 / 1_000_000,
    inputCacheReadTokens: 0.3 / 1_000_000,
    internalReasoningTokens: 15.0 / 1_000_000,
  },
};

const priceResolver = createObjectPriceResolver(customPricingMap);

const billingMiddleware = createMoonshotaiV4Middleware({
  destinations: [consoleDestination()],
  priceResolver,
});

const wrappedModel = wrapLanguageModel({
  model: moonshotai('kimi-k3'),
  middleware: billingMiddleware,
});