import {z} from 'zod'

export type CallParameters = {From: string, To: string, Gateways: string, AnswerUrl: string, CallerName?: string | undefined, HangupUrl?: string | undefined, RingUrl?: string | undefined, ExtraDialString?: string | undefined, GatewayCodecs?: string | undefined, GatewayTimeouts?: string | undefined, GatewayRetries?: string | undefined, SendDigits?: string | undefined, SendOnPreanswer?: boolean | undefined, TimeLimit?: number | undefined, HangupOnRing?: number | undefined, CoreUUID?: string | undefined, MachineDetection?: ('Enable' | 'DetectMessageEnd') | undefined, AsyncAMD?: boolean | undefined, AsyncAmdStatusCallbackMethod?: ('POST' | 'GET') | undefined, AsyncAmdStatusCallback?: string | undefined, MachineDetectionTimeout?: number | undefined, MachineDetectionSpeechThreshold?: number | undefined, MachineDetectionSpeechEndThreshold?: number | undefined, MachineDetectionSilenceTimeout?: number | undefined};

export type CreateApiV01CallArgs = {body: CallParameters};

export type CreateApiV01CallOptions = {baseUrl: string, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const callResponse = z.object({Message: z.enum(["Call Request Executed", "Mandatory Parameters Missing", "AnswerUrl is not Valid", "HangupUrl is not Valid", "RingUrl is not Valid", "Unknown Core UUID"]), RequestUUID: z.string(), Success: z.boolean(), RestApiServer: z.string()});

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
};

/**
 * /v0.1/Call/
 * 
 * POST /v0.1/Call/
 */
export const createApiV01Call = async (args: CreateApiV01CallArgs, options: CreateApiV01CallOptions) => {
const {baseUrl, fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v0.1/Call/${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: new URLSearchParams(Object.entries(args.body).flatMap(([key, value]) => (value == null ? [] : [[key, String(value)]])))})

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

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