import {z} from 'zod'

export type GetApiV1SpaReportingProductPerformanceArgs = {campaignId: string, sku: string, fromDate?: (string | null) | undefined, toDate?: (string | null) | undefined};

export type GetApiV1SpaReportingProductPerformanceOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const dateRangeSponsoredProductAdsReportingV1 = z.object({fromDate: z.string().nullable().optional(), toDate: z.string().nullable().optional()});

export const productMetricsSponsoredProductAdsReportingV1 = z.object({clickThroughRate: z.number(), costPerClick: z.number(), returnOnAdSpend: z.number(), totalViews: z.number().int(), totalClicks: z.number().int(), totalCosts: z.number(), totalOrderedSkus: z.number().int(), totalSales: z.number(), totalSalesSeller: z.number()});

export const sponsoredProductAdsProductPerformanceSponsoredProductAdsReportingV1 = z.object({campaignId: z.string(), sku: z.string(), dateRange: dateRangeSponsoredProductAdsReportingV1, metrics: productMetricsSponsoredProductAdsReportingV1, lastCalculatedAt: z.string()});

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
};

/**
 * Get product's performance with flexible date filtering
 * 
 * GET /v1/spa-reporting/product-performance
 */
export const getApiV1SpaReportingProductPerformance = async (args: GetApiV1SpaReportingProductPerformanceArgs, options?: GetApiV1SpaReportingProductPerformanceOptions) => {
const {baseUrl = "https://api.otto.market", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.campaignId != null) query.append("campaignId", String(args.campaignId))
if (args.sku != null) query.append("sku", String(args.sku))
if (args.fromDate != null) query.append("fromDate", String(args.fromDate))
if (args.toDate != null) query.append("toDate", String(args.toDate))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/spa-reporting/product-performance${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

return validateResponse(sponsoredProductAdsProductPerformanceSponsoredProductAdsReportingV1, await res.json())
};