import {z} from 'zod'

export type CreateApiIvrsArgs = {body: {name: string, extension_number: string, language?: string | undefined, dtmf_interval?: number | undefined, prompt_file_id?: string | undefined, transfer_prompt_file_id?: string | undefined, enable_pin?: boolean | undefined, pin: string, timeout_forward_rule?: ({timeout?: number | undefined, repeat_times?: number | undefined, action?: ('FORWARD_TO_NUMBER' | 'FORWARD_TO_VOICEMAIL' | 'REPEAT' | 'HANGUP') | undefined, number?: string | undefined}) | undefined, failure_forward_rule?: ({action?: ('FORWARD_TO_NUMBER' | 'FORWARD_TO_VOICEMAIL' | 'REPEAT' | 'HANGUP') | undefined, number?: string | undefined}) | undefined, custom_forward_rules?: (Array<{user_input?: string | undefined, office_hours?: ({mode?: ('GLOBAL' | 'CUSTOM') | undefined, monday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, tuesday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, wednesday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, thursday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, friday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, saturday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined, sunday?: ({enabled?: boolean | undefined, ranges?: (Array<{from?: string | undefined, to?: string | undefined}>) | undefined}) | undefined}) | undefined, office_hours_forward_rule?: ({action?: ('FORWARD_TO_NUMBER' | 'FORWARD_TO_VOICEMAIL' | 'REPEAT' | 'HANGUP' | 'DISA') | undefined, number?: string | undefined}) | undefined, non_office_hours_forward_rule?: ({action?: ('FORWARD_TO_NUMBER' | 'FORWARD_TO_VOICEMAIL' | 'REPEAT' | 'HANGUP' | 'DISA') | undefined, number?: string | undefined}) | undefined, holidays?: Array<string> | undefined, holiday_forward_rule?: ({action?: ('FORWARD_TO_NUMBER' | 'FORWARD_TO_VOICEMAIL' | 'REPEAT' | 'HANGUP' | 'DISA') | undefined, number?: string | undefined}) | undefined}>) | undefined, outbound_caller_ids?: (Array<{provider_id?: string | undefined, caller_id?: string | undefined, description?: string | undefined}>) | undefined}};

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

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

/**
 * Create a virtual receptionist.
 * 
 * POST /ivrs
 */
export const createApiIvrs = async (args: CreateApiIvrsArgs, options?: CreateApiIvrsOptions) => {
const {baseUrl = "https://HOSTNAME:8887/api", fetch: fetchFn = fetch, bearer} = options ?? {}

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

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

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