/**
 * validate-bundle command
 * Validate an entity bundle directory (catalog + schema + examples + tests + docs + behaviour facets)
 * Generated from SpecVerse specification
 */

import { Command } from 'commander';

import { existsSync, statSync } from 'fs';
import { resolve } from 'path';

interface CommandOptions {
  json?: boolean;
}

/**
 * Exit codes:
  //   0: All facets pass
  //   1: One or more facets failed
 */

/**
 * Register the validate-bundle command on the program.
 */
export function registerValidateBundleCommand(program: Command): void {
  program
    .command('validate-bundle <path>')
    .description('Validate an entity bundle directory (catalog + schema + examples + tests + docs + behaviour facets)')
    .option('--json', 'Emit the BundleReport as JSON', false)
    .action(async (path: string,  options: CommandOptions) => {
      try {
        const target = resolve(path);
        if (!existsSync(target)) {
          console.error('Path not found:', target);
          process.exit(1);
        }
        if (!statSync(target).isDirectory()) {
          console.error('Expected a bundle directory, got a file:', target);
          process.exit(1);
        }

        const { validateBundle } = await import('@specverse/engines/bundles');
        const report = await validateBundle(target);

        if (options.json) {
          console.log(JSON.stringify(report, null, 2));
          if (report.totals.fail > 0) process.exit(1);
          return;
        }

        const statusSymbol = (s: 'pass' | 'fail' | 'skip'): string => {
          if (s === 'pass') return '✓';
          if (s === 'fail') return '✗';
          return '–';
        };

        console.log('Bundle: ' + report.bundle + '  (' + report.path + ')');
        console.log('');
        for (const facet of report.facets) {
          const facetLine = '  ' + statusSymbol(facet.status) + ' ' + facet.facet.padEnd(10) + facet.status + '  (' + facet.duration + 'ms)';
          console.log(facetLine);
          for (const issue of facet.issues) {
            const loc = issue.location ? ' [' + issue.location + ']' : '';
            console.log('      - ' + issue.severity + ': ' + issue.message + loc);
          }
        }
        console.log('');
        console.log('Totals: ' + report.totals.pass + ' pass, ' + report.totals.fail + ' fail, ' + report.totals.skip + ' skip  (' + report.duration + 'ms)');

        if (report.totals.fail > 0) process.exit(1);
      } catch (error: any) {
        console.error('Error:', error.message);
        process.exit(1);
      }
    });
}