import {z} from 'zod'

export type MetricRequest = {groupByProduct?: boolean | undefined, groupByTenant?: boolean | undefined, tenantLocators?: Array<string> | undefined, products?: Array<string> | undefined, tenantType?: ('test' | 'production' | 'retired' | 'deleted') | undefined, startTime: string, endTime: string, periodic?: ('none' | 'day' | 'week' | 'month' | 'quarter' | 'year') | undefined, currencies?: Array<string> | undefined, localStartDateAdjusted: string, localEndDateAdjusted: string};

export type CreateApiBusinessStatsMetricsConversionRateArgs = {offset?: number | undefined, count?: number | undefined, backfillZeroes?: boolean | undefined, body: MetricRequest};

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

export const dataPoint = z.object({productName: z.string(), tenantLocator: z.string(), currency: z.string(), dataPointStartDate: z.string(), value: z.number()});

export const metricResponse = z.object({offset: z.number().int(), count: z.number().int(), startDate: z.string(), endDate: z.string(), periodic: z.enum(["none", "day", "week", "month", "quarter", "year"]), results: z.array(dataPoint)});

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
};

/**
 * POST /business-stats/metrics/conversionRate
 */
export const createApiBusinessStatsMetricsConversionRate = async (args: CreateApiBusinessStatsMetricsConversionRateArgs, options: CreateApiBusinessStatsMetricsConversionRateOptions) => {
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")

if (args.offset != null) query.append("offset", String(args.offset))
if (args.count != null) query.append("count", String(args.count))
if (args.backfillZeroes != null) query.append("backfillZeroes", String(args.backfillZeroes))

const url = `${baseUrl.replace(/\/+$/, '')}/business-stats/metrics/conversionRate${query.size > 0 ? `?${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(metricResponse, await res.json())
};