import {z} from 'zod'

export type RespondChatRequest = {conversation_id: string, message?: string | undefined};

export type CreateApiVersionAccountIdProjectIdChatRespondArgs = {'X-API-KEY': string, 'X-TOKEN': string, version: string, account_id: string, project_id: string, body: RespondChatRequest};

export type CreateApiVersionAccountIdProjectIdChatRespondOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const respondChatResponse = z.object({conversation_id: z.string(), response: z.string(), end_conversation: z.boolean(), handoff: z.object({destination: z.string().optional(), reason: z.string().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
};

/**
 * Send a message to an existing chat conversation
 * 
 * POST /{version}/{account_id}/{project_id}/chat/respond
 * 
 * Also accepts auth: TokenAuth
 */
export const createApiVersionAccountIdProjectIdChatRespond = async (args: CreateApiVersionAccountIdProjectIdChatRespondArgs, options?: CreateApiVersionAccountIdProjectIdChatRespondOptions) => {
const {baseUrl = "https://api.us.poly.ai", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args['X-API-KEY'] != null) headers.set("X-API-KEY", String(args['X-API-KEY']))
if (args['X-TOKEN'] != null) headers.set("X-TOKEN", String(args['X-TOKEN']))
if (ApiKeyAuth !== undefined) headers.set("x-api-key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.version))}/${encodeURIComponent(String(args.account_id))}/${encodeURIComponent(String(args.project_id))}/chat/respond${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(respondChatResponse, await res.json())
};