import {z} from 'zod'

export type OnlineUserListCreateData = {includeBackgroundSessions?: boolean | undefined, selectedConversationId?: (string | null) | undefined, hasFocus?: boolean | undefined, isTyping?: boolean | undefined, userIds?: Array<string> | undefined};

export type CreateApiV1AppIdPresencesArgs = {appId: string, body: OnlineUserListCreateData};

export type CreateApiV1AppIdPresencesOptions = {baseUrl?: string | undefined, JWTAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const session = z.array(z.object({custom: z.record(z.string(), z.string()).optional(), selectedConversationId: z.string().optional(), isTyping: z.boolean().optional(), hasFocus: z.boolean().optional(), sessionId: z.string().optional()}));

export const onlineUserList = z.object({data: z.record(z.string(), z.object({status: z.string().optional(), backgroundSessions: session.optional(), widgets: session.optional()})).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
};

/**
 * List online users
 * 
 * POST /v1/{appId}/presences
 * 
 * Also accepts auth: ApiKeyAuth
 */
export const createApiV1AppIdPresences = async (args: CreateApiV1AppIdPresencesArgs, options?: CreateApiV1AppIdPresencesOptions) => {
const {baseUrl = "https://api.talkjs.com", fetch: fetchFn = fetch, JWTAuth} = options ?? {}

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

if (JWTAuth !== undefined) headers.set('authorization', `Bearer ${JWTAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/${encodeURIComponent(String(args.appId))}/presences${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(onlineUserList, await res.json())
};