/**
 * ─────────────────────────────────────────────
 *  SPB Git — Personal Git Platform
 * ─────────────────────────────────────────────
 *  Author  : Simon-Pierre Boucher
 *  Contact : contact@spboucher.ai
 *  File    : cli/commands/init.mjs
 *  Purpose : `spbgit init` — interactive setup wizard
 *  License : MIT © Simon-Pierre Boucher
 * ─────────────────────────────────────────────
 */

import { mkdirSync } from 'node:fs';
import pc from 'picocolors';
import { loadCliConfig, saveCliConfig, expandHome, CONFIG_PATH } from '../lib/config.mjs';
import { prompt } from '../lib/ui.mjs';
import { git } from '../lib/git.mjs';
import { api } from '../lib/api.mjs';

export function registerInit(program) {
  program
    .command('init')
    .description('interactive setup: server URL, token, workspace directory')
    .action(async () => {
      const existing = loadCliConfig() ?? {};
      console.log(pc.bold('SPB Git CLI setup\n'));
      const server = await prompt('Server URL', existing.server ?? 'https://git.spboucher.ai');
      const token = await prompt('Personal access token (paste, hidden after save)', existing.token ? '(keep current)' : '');
      const workspace = expandHome(await prompt('Workspace directory', existing.workspace ?? '~/code'));

      const config = {
        server: server.replace(/\/+$/, ''),
        token: token === '(keep current)' ? existing.token : token,
        workspace,
        author: existing.author ?? { name: 'Simon-Pierre Boucher', email: 'contact@spboucher.ai' },
      };
      mkdirSync(workspace, { recursive: true });
      saveCliConfig(config);
      console.log(`\n${pc.green('✓')} Config written to ${CONFIG_PATH} (mode 600)`);

      // Ensure global git identity exists.
      const name = await git(process.cwd(), ['config', '--global', 'user.name']);
      if (!name.ok || !name.stdout.trim()) {
        await git(process.cwd(), ['config', '--global', 'user.name', config.author.name]);
        console.log(`${pc.green('✓')} git user.name set to ${config.author.name}`);
      }
      const email = await git(process.cwd(), ['config', '--global', 'user.email']);
      if (!email.ok || !email.stdout.trim()) {
        await git(process.cwd(), ['config', '--global', 'user.email', config.author.email]);
        console.log(`${pc.green('✓')} git user.email set to ${config.author.email}`);
      }

      if (config.token) {
        try {
          const who = await api(config, 'GET', '/api/v1/whoami');
          console.log(`${pc.green('✓')} Token valid — authenticated as ${who.owner} (${who.tokenLabel})`);
        } catch (err) {
          console.log(`${pc.yellow('!')} Could not verify token: ${err.message}`);
        }
      } else {
        console.log(`${pc.yellow('!')} No token saved — read-only operations only. Get one with: spbgit token new`);
      }
    });
}