import {z} from 'zod'

export type BusinessUnitID = string;

export type CountryCode = string;

export type GetApiDemandAccountsAccountIdDefaultAllocationTemplatesArgs = {business_unit_id?: BusinessUnitID | undefined, country_code?: CountryCode | undefined};

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

export const templateID = z.string();

export const defaultAllocationTemplate = z.object({id: templateID, type: z.enum(["account", "country"]), version: z.number().int()});

export const getDefaultAllocationTemplatesResponse = z.object({default_templates: z.array(defaultAllocationTemplate)});

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 the IDs of relevant default allocation templates
 * 
 * GET /demand/accounts/{account_id}/default-allocation-templates
 */
export const getApiDemandAccountsAccountIdDefaultAllocationTemplates = async (args: GetApiDemandAccountsAccountIdDefaultAllocationTemplatesArgs, options?: GetApiDemandAccountsAccountIdDefaultAllocationTemplatesOptions) => {
const {baseUrl = "https://api.cint.com/v1", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.business_unit_id != null) query.append("business_unit_id", String(args.business_unit_id))
if (args.country_code != null) query.append("country_code", String(args.country_code))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/demand/accounts/${encodeURIComponent(String(args.account_id))}/default-allocation-templates${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(getDefaultAllocationTemplatesResponse, await res.json())
};