import {z} from 'zod'

export type MakeCallPayload = {to: string, prompt_dynamic_variables?: ({[key: string]: unknown} | null) | undefined};

export type CreateApiApiV1CallWidgetIdArgs = {widget_id: string, body: MakeCallPayload};

export type CreateApiApiV1CallWidgetIdOptions = {baseUrl: string, YourAPIKey?: string | undefined, fetch?: typeof fetch | undefined};

export const telephonyProviderEnum = z.enum(["twilio", "plivo", "telnyx", "sip"]);

export const telephonyProviderCallDetails = z.object({provider_name: telephonyProviderEnum, call_id: z.string(), response_body: z.record(z.string(), z.unknown())});

export const call = z.object({conversation_id: z.string(), contact_id: z.string(), widget_id: z.string(), assistant_id: z.string(), direction: z.string(), from_number: z.string(), to_number: z.string(), telephony_provider: telephonyProviderCallDetails, prompt_dynamic_variables: z.record(z.string(), z.unknown()).nullable().optional()});

export const iPostResponseBaseCall = z.object({message: z.string().nullable().optional(), meta: z.union([z.record(z.string(), z.unknown()), z.unknown()]).nullable().optional(), data: call.nullable().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
};

/**
 * Make a call
 * 
 * POST /api/v1/call/{widget_id}
 * 
 * Also accepts auth: HTTPBearer
 */
export const createApiApiV1CallWidgetId = async (args: CreateApiApiV1CallWidgetIdArgs, options: CreateApiApiV1CallWidgetIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, YourAPIKey} = options ?? {}

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

if (YourAPIKey !== undefined) query.set("api_key", YourAPIKey)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/call/${encodeURIComponent(String(args.widget_id))}${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(iPostResponseBaseCall, await res.json())
};