import {z} from 'zod'

export type PricingV1CalculateCostRequest = {audioSeconds?: string | undefined, cachedTokens?: string | undefined, imageCount?: string | undefined, inputTokens?: string | undefined, modelId?: string | undefined, outputTokens?: string | undefined, planId?: string | undefined, requestCount?: string | undefined, videoSeconds?: string | undefined};

export type CreateApiV1PricingCalculateArgs = {body: PricingV1CalculateCostRequest};

export type CreateApiV1PricingCalculateOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const pricingV1ModelPriceInfo = z.object({cachedInputPrice: z.string().optional(), currency: z.string().optional(), effectiveFrom: z.string().optional(), effectiveTo: z.string().optional(), id: z.string().optional(), inputPrice: z.string().optional(), internalCostInput: z.string().optional(), internalCostOutput: z.string().optional(), modelId: z.string().optional(), officialPriceCurrency: z.string().optional(), officialPriceUsd: z.string().optional(), outputPrice: z.string().optional(), perAudioSecondPrice: z.string().optional(), perImagePrice: z.string().optional(), perRequestPrice: z.string().optional(), perVideoSecondPrice: z.string().optional(), planId: z.string().optional(), version: z.number().int().optional()});

export const pricingV1CalculateCostReply = z.object({costMicros: z.string().optional(), currency: z.string().optional(), grossMicros: z.string().optional(), price: pricingV1ModelPriceInfo.optional(), totalMicros: z.string().optional(), usedFallback: z.boolean().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * CalculateCost 计算费用（根据 tokens / images / audio / video / request 等维度）。
 * 
 * POST /v1/pricing/calculate
 */
export const createApiV1PricingCalculate = async (args: CreateApiV1PricingCalculateArgs, options: CreateApiV1PricingCalculateOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

const url = `${baseUrl.replace(/\/+$/, '')}/v1/pricing/calculate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(pricingV1CalculateCostReply, await res.json())
};