import {z} from 'zod'

export type VapiToolCallFunction = {name: string, arguments: {[key: string]: unknown}};

export type VapiToolCall = {id: string, type?: string | undefined, function: VapiToolCallFunction} | {[key: string]: unknown};

export type VapiCallObject = {id: string} | {[key: string]: unknown};

export type VapiMessage = {type: string, toolCallList: Array<VapiToolCall>, call?: (VapiCallObject | null) | undefined, artifact?: ({[key: string]: unknown} | null) | undefined, assistant?: ({[key: string]: unknown} | null) | undefined} | {[key: string]: unknown};

export type VapiCustomToolRequest = {message: VapiMessage};

export type CreateApiVapiStaffDirectoryTransferArgs = {body: VapiCustomToolRequest};

export type CreateApiVapiStaffDirectoryTransferOptions = {baseUrl: string, HTTPBearer?: string | undefined, fetch?: typeof fetch | undefined};

export const vapiToolResult = z.object({toolCallId: z.string(), result: z.string()});

export const vapiCustomToolResponse = z.object({results: z.array(vapiToolResult)});

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
};

/**
 * Staff Directory Transfer
 * 
 * POST /vapi/staff-directory-transfer
 */
export const createApiVapiStaffDirectoryTransfer = async (args: CreateApiVapiStaffDirectoryTransferArgs, options: CreateApiVapiStaffDirectoryTransferOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/vapi/staff-directory-transfer${query.size > 0 ? `?${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(vapiCustomToolResponse, await res.json())
};