import { fileURLToPath } from 'node:url';
import { join } from 'node:path';
import { loadPlugins } from '../core/loader.ts';
import { Registry } from '../core/registry.ts';

const __dirname = fileURLToPath(new URL('.', import.meta.url));
const PROJECT_ROOT = join(__dirname, '..', '..');
const DEFAULT_CONFIG = join(PROJECT_ROOT, 'config', 'default.json');

export async function list(): Promise<void> {
  const { plugins, errors } = await loadPlugins();
  const registry = new Registry();

  for (const plugin of plugins) {
    registry.register(plugin);
  }
  await registry.loadConfig(DEFAULT_CONFIG);

  if (plugins.length === 0 && errors.length === 0) {
    console.log('No plugins found.');
    return;
  }

  console.log('Discovered plugins:\n');

  const nameWidth = Math.max(12, ...plugins.map(p => p.name.length)) + 2;

  for (const plugin of plugins) {
    const enabled = registry.isEnabled(plugin.name);
    const status = enabled ? '✓ enabled ' : '✗ disabled';
    const hooks = ['onInstall', 'onUninstall', 'onStart', 'onStop'] as const;
    const activeHooks = hooks.filter(h => plugin[h] !== undefined);
    const hookStr = activeHooks.length > 0 ? ` [${activeHooks.join(', ')}]` : '';
    const triggers = (registry.getPluginConfig(plugin.name)?.triggers ?? {});
    const triggerList = Object.keys(triggers).filter(t => triggers[t]).join(', ');

    console.log(`  ${status}  ${plugin.name.padEnd(nameWidth)} ${plugin.description}`);
    console.log(`${''.padEnd(14)}${''.padEnd(nameWidth)} triggers: ${triggerList || 'none'}${hookStr}`);
  }

  if (errors.length > 0) {
    console.log('\nLoad errors:');
    for (const { source, error } of errors) {
      console.log(`  ⚠ ${source}: ${error}`);
    }
  }

  console.log(`\n${plugins.length} plugin(s) loaded, ${errors.length} error(s)`);
}