import chalk from 'chalk';
import { resolve } from 'path';
import { existsSync } from 'fs';
import { detectProject, getProjectInfo } from '../detectors/index.js';

/**
 * Detect command - identify project type and show deployment recommendations
 */
export async function detectCommand(path, options) {
  const projectPath = resolve(path);

  if (!existsSync(projectPath)) {
    throw new Error(`Path does not exist: ${projectPath}`);
  }

  console.log(chalk.blue('Scanning project...'), projectPath);
  console.log();

  const detection = await detectProject(projectPath);

  if (options.json) {
    console.log(JSON.stringify(detection, null, 2));
    return detection;
  }

  // Display results
  if (detection.dockerizable) {
    console.log(chalk.green('✓ Detected:'), chalk.bold(detection.description || detection.type));
    console.log();
    console.log(chalk.gray('  Project:    '), detection.projectName);
    console.log(chalk.gray('  Type:       '), detection.type);
    console.log(chalk.gray('  Template:   '), detection.template);
    console.log(chalk.gray('  Port:       '), detection.port || 'N/A');
    console.log(chalk.gray('  Entry:      '), detection.entryPoint || 'N/A');

    if (detection.buildCommand) {
      console.log(chalk.gray('  Build:      '), detection.buildCommand);
    }

    if (detection.note) {
      console.log();
      console.log(chalk.yellow('  Note:'), detection.note);
    }

    console.log();
    console.log(chalk.gray('Dockerizable:'), chalk.green('Yes'));

    // Get additional info
    const info = await getProjectInfo(projectPath, detection.type);
    if (info) {
      console.log();
      console.log(chalk.gray('Additional Info:'));
      if (info.dependencies) {
        console.log(chalk.gray('  Dependencies:'), info.dependencies.length);
      }
      if (info.scripts) {
        console.log(chalk.gray('  Scripts:'), info.scripts.join(', '));
      }
      if (info.packages) {
        console.log(chalk.gray('  Packages:'), info.packages.length);
      }
    }

    console.log();
    console.log(chalk.blue('Next step:'), `npm run docker-deploy -- init "${path}"`);

  } else {
    console.log(chalk.red('✗ Not Dockerizable:'), chalk.bold(detection.type));
    console.log();
    console.log(chalk.gray('  Project:'), detection.projectName);
    console.log(chalk.gray('  Reason: '), detection.reason);
    console.log();
    console.log(chalk.gray('Dockerizable:'), chalk.red('No'));
  }

  return detection;
}