import {z} from 'zod'

export type GetApiV2UsersArgs = {email?: string | undefined, slack_user_id?: string | undefined, page_size?: number | undefined, after?: string | undefined};

export type GetApiV2UsersOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const paginationMetaResult = z.object({after: z.string().optional(), page_size: z.number().int()});

export const rBACRoleV2 = z.object({description: z.string().optional(), id: z.string(), name: z.string(), slug: z.string()});

export const userWithRolesV2 = z.object({base_role: rBACRoleV2, custom_roles: z.array(rBACRoleV2), email: z.string().optional(), id: z.string(), name: z.string(), role: z.enum(["viewer", "responder", "administrator", "owner", "unset"]), slack_user_id: z.string().optional()});

export const usersV2ListResponseBody = z.object({pagination_meta: paginationMetaResult, users: z.array(userWithRolesV2)});

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
};

/**
 * List Users V2
 * 
 * GET /v2/users
 */
export const getApiV2Users = async (args: GetApiV2UsersArgs, options?: GetApiV2UsersOptions) => {
const {baseUrl = "https:////api.incident.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.email != null) query.append("email", String(args.email))
if (args.slack_user_id != null) query.append("slack_user_id", String(args.slack_user_id))
if (args.page_size != null) query.append("page_size", String(args.page_size))
if (args.after != null) query.append("after", String(args.after))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/users${query.size > 0 ? `?${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(usersV2ListResponseBody, await res.json())
};