#!/usr/bin/env node
/**
 * Install / uninstall / update OpenClaw Perf Cache plugin.
 *
 * Usage:
 *   node scripts/install.mjs --install    # build + copy + register in openclaw.json
 *   node scripts/install.mjs --uninstall  # remove plugin + unregister
 *   node scripts/install.mjs --update     # rebuild + copy (no config touch)
 */
import fs from 'node:fs';
import path from 'node:path';
import { execSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const projRoot = path.resolve(__dirname, '..');
const pluginSrcDir = path.join(projRoot, 'plugin');

const PLUGIN_ID = 'openclaw-perf-cache';
const ocDir = path.join(process.env.HOME || '/root', '.openclaw');
const pluginsDir = path.join(ocDir, 'plugins');
const installDir = path.join(pluginsDir, PLUGIN_ID);
const configPath = path.join(ocDir, 'openclaw.json');

const action = process.argv[2];
if (!action || !['--install', '--uninstall', '--update'].includes(action)) {
  console.log('Usage: node scripts/install.mjs --install | --uninstall | --update');
  process.exit(1);
}

function build() {
  console.log('Building plugin TypeScript...');
  execSync('npx tsc -p tsconfig.json', { cwd: pluginSrcDir, stdio: 'inherit' });
}

function copyPluginFiles() {
  if (fs.existsSync(installDir)) fs.rmSync(installDir, { recursive: true });
  fs.mkdirSync(installDir, { recursive: true });
  // Copy compiled output + manifest + package.json. Skip the .ts source so
  // jiti uses the .js (no transpile overhead at load time) and skip tsconfig.
  for (const f of ['index.js', 'openclaw.plugin.json', 'package.json']) {
    const src = path.join(pluginSrcDir, f);
    const dst = path.join(installDir, f);
    if (!fs.existsSync(src)) {
      console.error(`missing ${src}; run build first`);
      process.exit(1);
    }
    fs.copyFileSync(src, dst);
  }
  console.log(`Copied to ${installDir}`);
}

function readConfig() {
  return JSON.parse(fs.readFileSync(configPath, 'utf8'));
}

function writeConfig(cfg) {
  fs.writeFileSync(configPath, JSON.stringify(cfg, null, 2) + '\n', 'utf8');
}

function registerInConfig() {
  const cfg = readConfig();
  const plugins = (cfg.plugins ??= {});
  const allow = (plugins.allow ??= []);
  const loadPaths = ((plugins.load ??= {}).paths ??= []);
  const entries = (plugins.entries ??= {});

  if (!allow.includes(PLUGIN_ID)) allow.push(PLUGIN_ID);
  if (!loadPaths.includes(installDir)) loadPaths.push(installDir);

  const entry = (entries[PLUGIN_ID] ??= {});
  if (entry.enabled === undefined) entry.enabled = true;

  writeConfig(cfg);
  console.log(`Registered ${PLUGIN_ID} in ${configPath}`);
}

function unregisterFromConfig() {
  const cfg = readConfig();
  const plugins = cfg.plugins ?? {};
  if (Array.isArray(plugins.allow)) {
    plugins.allow = plugins.allow.filter((id) => id !== PLUGIN_ID);
  }
  const loadPaths = plugins.load?.paths;
  if (Array.isArray(loadPaths)) {
    plugins.load.paths = loadPaths.filter((p) => p !== installDir);
  }
  if (plugins.entries && plugins.entries[PLUGIN_ID]) {
    delete plugins.entries[PLUGIN_ID];
  }
  writeConfig(cfg);
  console.log(`Unregistered ${PLUGIN_ID} from ${configPath}`);
}

if (action === '--install') {
  build();
  copyPluginFiles();
  registerInConfig();
  console.log('Done. Restart gateway to load: systemctl --user restart openclaw-gateway');
} else if (action === '--update') {
  build();
  copyPluginFiles();
  console.log('Updated. Restart gateway to reload: systemctl --user restart openclaw-gateway');
} else if (action === '--uninstall') {
  if (fs.existsSync(installDir)) {
    fs.rmSync(installDir, { recursive: true });
    console.log(`Removed ${installDir}`);
  }
  unregisterFromConfig();
  console.log('Done. Restart gateway to drop: systemctl --user restart openclaw-gateway');
}