import {z} from 'zod'

export type RunId = string;

export type GetApiRunsRunIdArgs = {runId: RunId};

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

export const runId = z.string();

export const runStatus = z.enum(["CREATED", "PREPROCESSING", "READY", "STARTING", "STARTED", "RUNNING", "STOPPING", "COMPLETE", "ERROR"]);

export const simType = z.enum(["OPENSTUDIO", "MODELICA", "OTHER"]);

export const runMetadata = z.object({id: runId.optional(), name: z.string().optional(), status: runStatus.optional(), datetime: z.string().optional(), simType: simType.optional(), uploadTimestamp: z.string().optional(), errorLog: z.string().optional()});

export const getApiRunsRunIdResponse = z.object({payload: runMetadata.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
};

/**
 * Get run metadata
 * 
 * GET /runs/{runId}
 */
export const getApiRunsRunId = async (args: GetApiRunsRunIdArgs, options?: GetApiRunsRunIdOptions) => {
const {baseUrl = "https://api.server.test/v1", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/runs/${encodeURIComponent(String(args.runId))}${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(getApiRunsRunIdResponse, await res.json())
};