import {z} from 'zod'

export type GetApiScriptsInstancesArgs = {teamId?: Array<string> | undefined, modifiedSince?: string | undefined};

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

export const scriptInstanceInfoRuntimeStatus = z.union([z.literal(0), z.literal(1), z.literal(2), z.literal(3), z.literal(4), z.literal(-1)]);

export const scriptInstanceInfoRuntimeInformationModel = z.object({runtimeStatus: scriptInstanceInfoRuntimeStatus.optional(), runtimeStatusMessage: z.string().nullable().optional()});

export const scriptInstanceInfo = z.object({instanceId: z.string().nullable().optional(), scriptId: z.string().nullable().optional(), scriptName: z.string().nullable().optional(), customScriptName: z.string().nullable().optional(), customScriptDescription: z.string().nullable().optional(), subscriptionId: z.string().nullable().optional(), teamId: z.string().nullable().optional(), eventPattern: z.unknown(), lastModified: z.string().nullable().optional(), enabled: z.boolean().optional(), runtimeInformation: scriptInstanceInfoRuntimeInformationModel.optional(), eventSourceId: z.string().nullable().optional()});

export const getApiScriptsInstancesResponse = z.array(scriptInstanceInfo);

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
};

/**
 * Returns all script instances of the SIGNL4 team
 * 
 * GET /scripts/instances
 */
export const getApiScriptsInstances = async (args: GetApiScriptsInstancesArgs, options?: GetApiScriptsInstancesOptions) => {
const {baseUrl = "https://connect.signl4.com/api", fetch: fetchFn = fetch} = options ?? {}

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

for (const item of args.teamId ?? []) query.append("teamId", String(item))
if (args.modifiedSince != null) query.append("modifiedSince", String(args.modifiedSince))

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