import {z} from 'zod'

export type GetApiV1AdsAccountsHierarchyArgs = {accountId: string, adAccountId?: string | undefined, customerId?: string | undefined};

export type GetApiV1AdsAccountsHierarchyOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const googleAdsHierarchyClient = z.object({customerId: z.string().optional(), name: z.string().nullable().optional(), currency: z.string().nullable().optional(), timeZone: z.string().nullable().optional(), manager: z.boolean().optional(), testAccount: z.boolean().optional(), hidden: z.boolean().optional(), level: z.number().int().optional(), status: z.string().nullable().optional(), parentCustomerId: z.string().nullable().optional(), managerLinkId: z.string().nullable().optional(), linkStatus: z.enum(["ACTIVE", "PENDING", "null"]).nullable().optional()});

export const getApiV1AdsAccountsHierarchyResponse = z.object({accountId: z.string().optional(), roots: z.array(z.object({customerId: z.string().optional(), name: z.string().nullable().optional(), currency: z.string().nullable().optional(), timeZone: z.string().nullable().optional(), manager: z.boolean().optional(), testAccount: z.boolean().optional(), status: z.string().nullable().optional(), managerLinks: z.array(z.object({managerCustomerId: z.string().optional(), managerLinkId: z.string().optional(), status: z.enum(["ACTIVE", "PENDING"]).optional()})).optional(), clients: z.array(googleAdsHierarchyClient).optional()})).optional(), directCustomers: z.array(z.object({customerId: z.string().optional(), manager: z.boolean().optional(), pendingInvitations: z.array(z.object({managerCustomerId: z.string().optional(), managerLinkId: z.string().optional()})).optional()})).optional(), unavailable: z.array(z.object({customerId: z.string().optional(), reason: z.string().optional()})).optional(), truncated: z.boolean().optional(), cachedAt: z.string().nullable().optional(), stale: z.boolean().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 manager account hierarchy
 * 
 * GET /v1/ads/accounts/hierarchy
 */
export const getApiV1AdsAccountsHierarchy = async (args: GetApiV1AdsAccountsHierarchyArgs, options?: GetApiV1AdsAccountsHierarchyOptions) => {
const {baseUrl = "https://zernio.com/api", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.accountId != null) query.append("accountId", String(args.accountId))
if (args.adAccountId != null) query.append("adAccountId", String(args.adAccountId))
if (args.customerId != null) query.append("customerId", String(args.customerId))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/ads/accounts/hierarchy${query.size > 0 ? `?${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(getApiV1AdsAccountsHierarchyResponse, await res.json())
};