import {z} from 'zod'

export type GetApiConsumersTenantMeCommunicationPreferencesArgs = {tenant: string};

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

export const communicationChannels = z.enum(["email", "sms", "push"]);

export const channelSubscriptionsWithDerivedField = z.object({isDefault: z.boolean().optional(), subscribedChannels: z.array(communicationChannels).optional()});

export const communicationPreferences = z.object({marketing: channelSubscriptionsWithDerivedField.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
};

/**
 * Get communication preferences
 * 
 * GET /consumers/{tenant}/me/communication-preferences
 */
export const getApiConsumersTenantMeCommunicationPreferences = async (args: GetApiConsumersTenantMeCommunicationPreferencesArgs, options?: GetApiConsumersTenantMeCommunicationPreferencesOptions) => {
const {baseUrl = "https://uk.api.just-eat.io", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/consumers/${encodeURIComponent(String(args.tenant))}/me/communication-preferences${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(communicationPreferences, await res.json())
};