import { createXai } from '@ai-sdk/xai';
import { wrapLanguageModel } from 'ai';
import { createXaiV4Middleware } from '@ai-billing/xai';
import {
  consoleDestination,
  createObjectPriceResolver,
  type ModelPricing,
} from '@ai-billing/core';

const xai = createXai({ apiKey: process.env.XAI_API_KEY });

const customPricingMap: Record<string, ModelPricing> = {
  'grok-3': {
    promptTokens: 3.0 / 1_000_000,
    completionTokens: 15.0 / 1_000_000,
    inputCacheReadTokens: 0.75 / 1_000_000,
  },
  'grok-3-mini': {
    promptTokens: 0.3 / 1_000_000,
    completionTokens: 0.5 / 1_000_000,
    internalReasoningTokens: 0.5 / 1_000_000,
    inputCacheReadTokens: 0.075 / 1_000_000,
  },
};

const priceResolver = createObjectPriceResolver(customPricingMap);

const billingMiddleware = createXaiV4Middleware({
  destinations: [consoleDestination()],
  priceResolver,
});

const wrappedModel = wrapLanguageModel({
  model: xai('grok-3'),
  middleware: billingMiddleware,
});