import { ApiError, apiErrorMessage, apiFetch } from "./client";

export type PiReasoning = "low" | "medium" | "high";

export interface PiInstallationConfig {
  provider: string;
  model: string;
  reasoning: PiReasoning;
}

export interface PiManagementStatus {
  hostPlatform?: "linux" | "macos" | "windows";
  version?: string;
  ready: boolean;
  credentials: "present" | "missing";
  config: Partial<PiInstallationConfig>;
  checkedAt: string;
  message?: string;
}

export interface PiManagementTestResult {
  ready: boolean;
  checkedAt: string;
  message?: string;
}

export interface PiManagementLogs {
  lines: string[];
  checkedAt: string;
}

export type PiManagementApiErrorCode =
  | "pi_management_forbidden"
  | "pi_management_unavailable";

export interface PiManagementApiError {
  status: number;
  code: PiManagementApiErrorCode;
  message: string;
}

const errorCodes = new Set<PiManagementApiErrorCode>([
  "pi_management_forbidden",
  "pi_management_unavailable",
]);

/** Narrows the sanctioned error code and derives its message locally. */
export function asPiManagementApiError(error: unknown): PiManagementApiError | undefined {
  if (!(error instanceof ApiError)) return undefined;
  const code = error.code;
  if (typeof code !== "string" || !errorCodes.has(code as PiManagementApiErrorCode)) {
    return undefined;
  }
  return { status: error.status, code: code as PiManagementApiErrorCode, message: apiErrorMessage(error) };
}

export const getPiManagementStatus = () => apiFetch<PiManagementStatus>("/pi-management/status");
export const runPiManagementTest = () =>
  apiFetch<PiManagementTestResult>("/pi-management/test", { method: "POST" });
export const getPiManagementLogs = () => apiFetch<PiManagementLogs>("/pi-management/logs");