import { Command } from 'commander';
import { homedir } from 'node:os';
import { join } from 'node:path';
import { ClackPrompter } from './prompter/clack-prompter.js';
import { HeadlessPrompter } from './prompter/headless-prompter.js';
import { createConfigService } from './config/config-service.js';
import { runWizard } from './wizard.js';
import { WizardCancelledError } from './errors.js';
import { VERSION, DEFAULT_MOSAIC_HOME } from './constants.js';
import type { CommunicationStyle } from './types.js';

const program = new Command()
  .name('mosaic-wizard')
  .description('Mosaic Installation Wizard')
  .version(VERSION);

program
  .option('--non-interactive', 'Run without prompts (uses defaults + flags)')
  .option(
    '--source-dir <path>',
    'Source directory for framework files',
  )
  .option(
    '--mosaic-home <path>',
    'Target config directory',
    DEFAULT_MOSAIC_HOME,
  )
  // SOUL.md overrides
  .option('--name <name>', 'Agent name')
  .option('--role <description>', 'Agent role description')
  .option('--style <style>', 'Communication style: direct|friendly|formal')
  .option('--accessibility <prefs>', 'Accessibility preferences')
  .option('--guardrails <rules>', 'Custom guardrails')
  // USER.md overrides
  .option('--user-name <name>', 'Your name')
  .option('--pronouns <pronouns>', 'Your pronouns')
  .option('--timezone <tz>', 'Your timezone')
  .action(async (opts) => {
    try {
      const mosaicHome: string = opts.mosaicHome;
      const sourceDir: string = opts.sourceDir ?? mosaicHome;

      const prompter = opts.nonInteractive
        ? new HeadlessPrompter()
        : new ClackPrompter();

      const configService = createConfigService(mosaicHome, sourceDir);

      const style = opts.style as CommunicationStyle | undefined;

      await runWizard({
        mosaicHome,
        sourceDir,
        prompter,
        configService,
        cliOverrides: {
          soul: {
            agentName: opts.name,
            roleDescription: opts.role,
            communicationStyle: style,
            accessibility: opts.accessibility,
            customGuardrails: opts.guardrails,
          },
          user: {
            userName: opts.userName,
            pronouns: opts.pronouns,
            timezone: opts.timezone,
          },
        },
      });
    } catch (err) {
      if (err instanceof WizardCancelledError) {
        console.log('\nWizard cancelled.');
        process.exit(0);
      }
      console.error('Wizard failed:', err);
      process.exit(1);
    }
  });

program.parse();