import {z} from 'zod'

export type GetApiEntitiesRealtimeJourneysAbtestVariantsArgs = {audience_id: number};

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

export const partialRealtimeJourneyYamlRealtimeJourneyABTestVariantsJsonApiResource = z.object({id: z.string().optional(), type: z.literal("realtimeJourneyABTestVariant").optional(), attributes: z.object({name: z.string(), location: z.string(), realtimeJourneyId: z.string(), realtimeJourneyName: z.string().optional(), realtimeJourneyStageId: z.string(), realtimeJourneyStageName: z.string().optional(), realtimeJourneyStepId: z.string().optional(), realtimeJourneyStepName: z.string().optional(), realtimeJourneyStepVariantId: z.string().optional(), realtimeJourneyStepVariantName: z.string().optional(), realtimejourneyState: z.enum(["draft", "launched"]).optional(), realtimejourneyPaused: z.boolean().optional()}).optional()});

export const partialRealtimeJourneyYamlEntitiesGetRealtimeJourneyABTestVariantsJsonApiResponse = z.object({data: z.array(partialRealtimeJourneyYamlRealtimeJourneyABTestVariantsJsonApiResource)});

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
};

/**
 * Retrieve list of abtest variants available in audience
 * 
 * GET /entities/realtime_journeys/abtest_variants
 */
export const getApiEntitiesRealtimeJourneysAbtestVariants = async (args: GetApiEntitiesRealtimeJourneysAbtestVariantsArgs, options?: GetApiEntitiesRealtimeJourneysAbtestVariantsOptions) => {
const {baseUrl = "https://api-cdp.treasuredata.com", fetch: fetchFn = fetch, TdApikeyAuth} = options ?? {}

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

if (args.audience_id != null) query.append("audience_id", String(args.audience_id))
if (TdApikeyAuth !== undefined) headers.set("Authorization", TdApikeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/entities/realtime_journeys/abtest_variants${query.size > 0 ? `?${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(partialRealtimeJourneyYamlEntitiesGetRealtimeJourneyABTestVariantsJsonApiResponse, await res.json())
};