locode/src/plugins/config.ts

import envPaths from "env-paths";
import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
import path from "node:path";

export interface InstalledPluginRecord {
  name: string;
  /** Absolute local path — either a local directory the user pointed at directly, or a git clone
   *  under pluginsDir(). */
  path: string;
  /** What the user originally passed to `locode plugin add` (path or git URL) — kept for display. */
  source: string;
}

const paths = envPaths("locode", { suffix: "" });
const registryFile = path.join(paths.config, "plugins.json");

export function pluginsDir(): string {
  return path.join(paths.data, "plugins");
}

export function loadInstalledPlugins(): InstalledPluginRecord[] {
  if (!existsSync(registryFile)) return [];
  try {
    const parsed = JSON.parse(readFileSync(registryFile, "utf-8")) as { plugins: InstalledPluginRecord[] };
    return parsed.plugins ?? [];
  } catch {
    return [];
  }
}

function saveInstalledPlugins(records: InstalledPluginRecord[]): void {
  mkdirSync(path.dirname(registryFile), { recursive: true });
  writeFileSync(registryFile, JSON.stringify({ plugins: records }, null, 2));
}

export function addInstalledPlugin(record: InstalledPluginRecord): void {
  const records = loadInstalledPlugins().filter((r) => r.name !== record.name);
  records.push(record);
  saveInstalledPlugins(records);
}

export function removeInstalledPlugin(name: string): boolean {
  const records = loadInstalledPlugins();
  const next = records.filter((r) => r.name !== name);
  if (next.length === records.length) return false;
  saveInstalledPlugins(next);
  return true;
}