/**
 * ABE — Autonomous Bug Explorer
 * Entry point: wires all components together and starts exploration.
 *
 * Usage:
 *   npm run explore -- --url http://localhost:3000 --output ./reports
 *   ts-node src/index.ts http://localhost:3000
 */

import { ExplorationEngine } from './core/ExplorationEngine';
import { StateGraph } from './core/StateGraph';
import { FileLogger } from './core/Logger';
import { PlaywrightAgent } from './plugins/agents/PlaywrightAgent';
import { ScreenshotCollector } from './plugins/collectors/ScreenshotCollector';
import { NetworkCollector } from './plugins/collectors/NetworkCollector';
import { DOMSnapshotCollector } from './plugins/collectors/DOMSnapshotCollector';
import { JSONExporter } from './plugins/exporters/JSONExporter';
import { MarkdownExporter } from './plugins/exporters/MarkdownExporter';
import { PlaywrightReproducer } from './plugins/reproducers/PlaywrightReproducer';

// ─── Parse CLI arguments ─────────────────────────────────────────────────────

function parseArgs(): { url: string; outputDir: string; seed: number; maxSteps: number } {
  const args = process.argv.slice(2);
  let url = 'http://localhost:3000';
  let outputDir = './reports';
  let seed = 42;
  let maxSteps = 100;

  for (let i = 0; i < args.length; i++) {
    if (args[i] === '--url' && args[i + 1]) url = args[++i];
    else if (args[i] === '--output' && args[i + 1]) outputDir = args[++i];
    else if (args[i] === '--seed' && args[i + 1]) seed = parseInt(args[++i], 10);
    else if (args[i] === '--max-steps' && args[i + 1]) maxSteps = parseInt(args[++i], 10);
    else if (!args[i].startsWith('--')) url = args[i];
  }

  return { url, outputDir, seed, maxSteps };
}

// ─── Main ─────────────────────────────────────────────────────────────────────

async function main(): Promise<void> {
  const { url, outputDir, seed, maxSteps } = parseArgs();

  const sessionId = `${new Date().toISOString().replace(/[:.]/g, '-')}_seed${seed}`;
  const logger = new FileLogger('./logs', sessionId);

  const graph = new StateGraph();
  const agent = new PlaywrightAgent({ seed, headless: true, logger });

  const collectors = [
    new ScreenshotCollector(outputDir),
    new NetworkCollector(),
    new DOMSnapshotCollector(outputDir),
  ];

  const exporters = [
    new JSONExporter(url),
    new MarkdownExporter(),
  ];

  const reproducer = new PlaywrightReproducer();

  const engine = new ExplorationEngine({
    graph,
    agent,
    collectors,
    exporters,
    reproducer,
    logger,
    seed,
    url,
    maxSteps,
    outputDir,
  });

  console.log(`[ABE] Starting exploration of ${url} (seed=${seed}, maxSteps=${maxSteps})`);

  try {
    const result = await engine.run();
    console.log(`[ABE] Exploration complete.`);
    console.log(`  States visited : ${result.statesVisited}`);
    console.log(`  Anomalies found: ${result.anomaliesFound}`);
    if (result.anomaliesFound > 0) {
      console.log(`  Reports saved to: ${outputDir}/`);
    }
  } catch (err) {
    console.error('[ABE] Fatal error:', err);
    process.exit(1);
  }
}

main();