import {z} from 'zod'

export type CreateApiV1NameWaitArgs = {name: string, body: Record<string, never>};

export type CreateApiV1NameWaitOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const v1SecretEnvironmentVariable = z.object({secretVersion: z.string()});

export const v1ProcessState = z.enum(["STATE_UNSPECIFIED", "STATE_PENDING", "STATE_RUNNING", "STATE_SUCCEEDED", "STATE_FAILED"]);

export const v1Process = z.object({name: z.string().optional(), command: z.string(), args: z.array(z.string()).optional(), workingDirectory: z.string().optional(), environmentVariables: z.record(z.string(), z.string()).optional(), secretEnvironmentVariables: z.record(z.string(), v1SecretEnvironmentVariable).optional(), state: v1ProcessState.optional(), exitCode: z.number().int().optional(), createTime: z.string().optional(), startTime: z.string().nullable().optional(), endTime: z.string().nullable().optional()});

export const v1WaitProcessResponse = z.object({process: v1Process.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
};

/**
 * Waits for a process to complete execution.
 * This is a blocking call that returns when the process reaches a terminal
 * state (STATE_SUCCEEDED or STATE_FAILED).
 * 
 * POST /v1/{name}:wait
 */
export const createApiV1NameWait = async (args: CreateApiV1NameWaitArgs, options: CreateApiV1NameWaitOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/${encodeURIComponent(String(args.name))}:wait${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(v1WaitProcessResponse, await res.json())
};