// What the extension and the Archify Sync server agree on. Mirrors
// `packages/protocol` (generated from Rust) in archify-vscode-ext-sync; keep
// both in step when the protocol changes.

export const PROTOCOL_VERSION = 1;
/** Root map of a space's Yjs document: model-root-relative POSIX path → Y.Text. */
export const FILES_MAP = 'files';
/** The link file in a model root: names server and space, holds no secrets. */
export const LINK_FILE = '.archify-sync';

export type OrgRole = 'admin' | 'member';
export type SpaceRole = 'owner' | 'editor';
export type VersionKind = 'snapshot' | 'publish' | 'restore';

export interface ApiError { error: string; message: string }
export interface Account { id: string; organisation_id: string; name: string; display_name: string; role: OrgRole }
export interface TokenResponse { access_token: string; expires_in: number; refresh_token: string; account: Account }
export interface ServerInfo { name: string; version: string; protocol: number; set_up: boolean }
export interface Space { id: string; name: string; role: SpaceRole; created_at: string }
export interface Member { account_id: string; name: string; display_name: string; role: SpaceRole }
export interface Invite { token: string; url: string; expires_at: string }
export interface JoinResponse { space: Space }
export interface Version {
  id: number;
  major: number;
  minor: number;
  kind: VersionKind;
  name: string | null;
  created_by: string | null;
  created_at: string;
  restored_from: number | null;
}
export interface VersionFiles { version: Version; files: { path: string; text: string }[] }

/** The contents of `.archify-sync`. */
export interface Link {
  server: string;
  space: string;
  name?: string;
}

export function parseLink(text: string): Link | undefined {
  try {
    const value = JSON.parse(text) as Partial<Link>;
    if (typeof value.server === 'string' && typeof value.space === 'string' && /^[0-9a-f-]{36}$/i.test(value.space)) {
      return { server: value.server.replace(/\/+$/, ''), space: value.space, name: typeof value.name === 'string' ? value.name : undefined };
    }
  } catch {
    // not a link
  }
  return undefined;
}

export function formatLink(link: Link): string {
  return `${JSON.stringify({ server: link.server, space: link.space, name: link.name }, null, 2)}\n`;
}

export function versionLabel(v: Version): string {
  return `${v.major}.${v.minor}`;
}