import {z} from 'zod'

export type GetApiOperationsAdminArgs = {q?: (string | null) | undefined, permissions?: (Array<'MANAGE_USERS' | 'MANAGE_BILLING_SUBSCRIPTIONS' | 'MANAGE_CAMPAIGNS' | 'MANAGE_ADMINS'> | null) | undefined, perPage?: number | undefined, cursor?: string | undefined};

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

export const operationsAdminSchema = z.object({id: z.number().int(), email: z.string(), name: z.string(), permissions: z.array(z.enum(["MANAGE_USERS", "MANAGE_BILLING_SUBSCRIPTIONS", "MANAGE_CAMPAIGNS", "MANAGE_ADMINS"]))});

export const getApiOperationsAdminResponse = z.object({items: z.array(operationsAdminSchema), perPage: z.number().int(), previous: z.string().nullable(), next: z.string().nullable()});

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 /operations/admin
 */
export const getApiOperationsAdmin = async (args: GetApiOperationsAdminArgs, options: GetApiOperationsAdminOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
for (const item of args.permissions ?? []) query.append("permissions", String(item))
if (args.perPage != null) query.append("perPage", String(args.perPage))
if (args.cursor != null) query.append("cursor", String(args.cursor))

const url = `${baseUrl.replace(/\/+$/, '')}/operations/admin${query.size > 0 ? `?${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(getApiOperationsAdminResponse, await res.json())
};