import {z} from 'zod'

export type TriggerSource = {advertise?: boolean | undefined, allow_trace?: boolean | undefined, name?: string | undefined, response_type?: ('Singleton' | 'Stream' | 'Chunked') | undefined, subject?: string | undefined, type?: ('stream' | 'service') | undefined, description?: string | undefined, info_url?: string | undefined};

export type TriggerTarget = {name?: string | undefined, subject?: string | undefined, account?: string | undefined, local_subject?: string | undefined, type?: ('stream' | 'service') | undefined, share?: boolean | undefined, allow_trace?: boolean | undefined};

export type StreamTriggerRequest = {name: string, collection?: string | undefined, description?: string | undefined, trigger_type: 'stream', source: TriggerSource, target: TriggerTarget};

export type CreateApiTriggerStreamArgs = {body: StreamTriggerRequest};

export type CreateApiTriggerStreamOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const triggerSource = z.object({advertise: z.boolean().optional(), allow_trace: z.boolean().optional(), name: z.string().optional(), response_type: z.enum(["Singleton", "Stream", "Chunked"]).optional(), subject: z.string().optional(), type: z.enum(["stream", "service"]).optional(), description: z.string().optional(), info_url: z.string().optional()});

export const triggerTarget = z.object({name: z.string().optional(), subject: z.string().optional(), account: z.string().optional(), local_subject: z.string().optional(), type: z.enum(["stream", "service"]).optional(), share: z.boolean().optional(), allow_trace: z.boolean().optional()});

export const streamTriggerResponse = z.object({body: z.object({name: z.string().optional(), collection: z.string().optional(), description: z.string().optional(), source: triggerSource.optional(), target: triggerTarget.optional(), stream: z.string().optional(), subject: z.string().optional(), trigger_type: z.literal("stream").optional(), type: z.string().optional()}).optional(), status_code: z.number().int().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 stream trigger
 * 
 * POST /trigger/stream
 * 
 * Also accepts auth: apiKeyAuth
 */
export const createApiTriggerStream = async (args: CreateApiTriggerStreamArgs, options?: CreateApiTriggerStreamOptions) => {
const {baseUrl = "https://api.quiva.ai", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

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