import {z} from 'zod'

export type GetApiApiOrgIdFunctionsNameArgs = {org_id: string, name: string};

export type GetApiApiOrgIdFunctionsNameOptions = {baseUrl: string, Authorization?: string | undefined, fetch?: typeof fetch | undefined};

export const streamType = z.enum(["logs", "metrics", "traces", "profiles", "service_graph", "enrichment_tables", "file_list", "metadata", "index"]);

export const streamOrder = z.object({applyBeforeFlattening: z.boolean().optional(), isRemoved: z.boolean().optional(), order: z.number().int().gte(0).optional(), stream: z.string().optional(), streamType: streamType.optional()});

export const transform = z.object({function: z.string(), name: z.string().optional(), numArgs: z.number().int().gte(0).optional(), params: z.string().optional(), streams: z.array(streamOrder).nullable().optional(), transType: z.number().int().gte(0).nullable().optional()});

export const getApiApiOrgIdFunctionsNameResponse = z.object({list: z.array(transform)});

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
};

/**
 * Get function pipeline dependencies
 * 
 * GET /api/{org_id}/functions/{name}
 */
export const getApiApiOrgIdFunctionsName = async (args: GetApiApiOrgIdFunctionsNameArgs, options: GetApiApiOrgIdFunctionsNameOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Authorization} = options ?? {}

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

if (Authorization !== undefined) headers.set("Authorization", Authorization)

const url = `${baseUrl.replace(/\/+$/, '')}/api/${encodeURIComponent(String(args.org_id))}/functions/${encodeURIComponent(String(args.name))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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