import {z} from 'zod'

export type GetApiUsersArgs = {offset?: number | undefined, limit?: number | undefined, countLimit?: number | undefined, userId?: Array<string> | undefined, name?: string | undefined, title?: string | undefined, department?: string | undefined, userSource?: Array<string> | undefined, nameSearchFields?: (Array<'USERNAME' | 'FIRSTNAME' | 'LASTNAME' | 'LASTNAME_FIRSTNAME' | 'FIRSTNAME_LASTNAME' | 'EMAIL'>) | undefined, groupId?: string | undefined, onlyLoggedIn?: boolean | undefined, includeDisabled?: boolean | undefined, sortOrder?: ('ASC' | 'DESC') | undefined, sortField?: ('USERNAME' | 'FIRSTNAME' | 'LASTNAME' | 'LASTNAME_FIRSTNAME' | 'FIRSTNAME_LASTNAME' | 'EMAIL') | undefined};

export type GetApiUsersOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const user = z.object({id: z.string()});

export const userPagedResponse = z.object({total: z.number().int().optional(), offset: z.number().int().optional(), limit: z.number().int().optional(), results: z.array(user).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
};

/**
 * Returns users matching the given search criteria
 * 
 * GET /users
 * 
 * Also accepts auth: jwtAuth, oauth2, oauth2
 */
export const getApiUsers = async (args: GetApiUsersArgs, options: GetApiUsersOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.countLimit != null) query.append("countLimit", String(args.countLimit))
for (const item of args.userId ?? []) query.append("userId", String(item))
if (args.name != null) query.append("name", String(args.name))
if (args.title != null) query.append("title", String(args.title))
if (args.department != null) query.append("department", String(args.department))
for (const item of args.userSource ?? []) query.append("userSource", String(item))
for (const item of args.nameSearchFields ?? []) query.append("nameSearchFields", String(item))
if (args.groupId != null) query.append("groupId", String(args.groupId))
if (args.onlyLoggedIn != null) query.append("onlyLoggedIn", String(args.onlyLoggedIn))
if (args.includeDisabled != null) query.append("includeDisabled", String(args.includeDisabled))
if (args.sortOrder != null) query.append("sortOrder", String(args.sortOrder))
if (args.sortField != null) query.append("sortField", String(args.sortField))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/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(userPagedResponse, await res.json())
};