import {z} from 'zod'

export type CommandSpec = Array<string> | string;

export type MachineCommandRequest = {background?: boolean | undefined, command: CommandSpec, cwd?: (string | null) | undefined, env?: {[key: string]: string} | undefined, stdin?: (string | null) | undefined, stream?: boolean | undefined, timeoutSeconds?: (number | null) | undefined, user?: (string | null) | undefined};

export type CreateApiV1MachinesIdSessionsSessionIdExecArgs = {id: string, session_id: string, body: MachineCommandRequest};

export type CreateApiV1MachinesIdSessionsSessionIdExecOptions = {baseUrl?: string | undefined, ApiKeyAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const machineExecResponse = z.object({durationMs: z.number().int().gte(0), exitCode: z.number().int(), machineId: z.string(), stderr: z.string(), stderrB64: z.string().optional(), stderrTruncated: z.boolean().optional(), stdout: z.string(), stdoutB64: z.string().optional(), stdoutTruncated: z.boolean().optional(), user: z.string().nullable().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
};

/**
 * Execute in a session.
 * 
 * POST /v1/machines/{id}/sessions/{session_id}/exec
 */
export const createApiV1MachinesIdSessionsSessionIdExec = async (args: CreateApiV1MachinesIdSessionsSessionIdExecArgs, options?: CreateApiV1MachinesIdSessionsSessionIdExecOptions) => {
const {baseUrl = "https://api.smolmachines.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/machines/${encodeURIComponent(String(args.id))}/sessions/${encodeURIComponent(String(args.session_id))}/exec${query.size > 0 ? `?${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(machineExecResponse, await res.json())
};