src/channels/command-gating.ts

export type CommandAuthorizer = {
  configured: boolean;
  allowed: boolean;
};

export type CommandGatingModeWhenAccessGroupsOff = "allow" | "deny" | "configured";

export function resolveCommandAuthorizedFromAuthorizers(params: {
  useAccessGroups: boolean;
  authorizers: CommandAuthorizer[];
  modeWhenAccessGroupsOff?: CommandGatingModeWhenAccessGroupsOff;
}): boolean {
  const { useAccessGroups, authorizers } = params;
  const mode = params.modeWhenAccessGroupsOff ?? "allow";
  if (!useAccessGroups) {
    if (mode === "allow") {
      return true;
    }
    if (mode === "deny") {
      return false;
    }
    const anyConfigured = authorizers.some((entry) => entry.configured);
    if (!anyConfigured) {
      return true;
    }
    return authorizers.some((entry) => entry.configured && entry.allowed);
  }
  return authorizers.some((entry) => entry.configured && entry.allowed);
}

export function resolveControlCommandGate(params: {
  useAccessGroups: boolean;
  authorizers: CommandAuthorizer[];
  allowTextCommands: boolean;
  hasControlCommand: boolean;
  modeWhenAccessGroupsOff?: CommandGatingModeWhenAccessGroupsOff;
}): { commandAuthorized: boolean; shouldBlock: boolean } {
  const commandAuthorized = resolveCommandAuthorizedFromAuthorizers({
    useAccessGroups: params.useAccessGroups,
    authorizers: params.authorizers,
    modeWhenAccessGroupsOff: params.modeWhenAccessGroupsOff,
  });
  const shouldBlock = params.allowTextCommands && params.hasControlCommand && !commandAuthorized;
  return { commandAuthorized, shouldBlock };
}