import { color, wrap } from './terminal.js';

export function createCommandRouter(api) {
  const commands = new Map();
  const add = command => commands.set(command.name, command);
  const page = name => {
    const item = api.config.pages?.[name];
    if (!item) return `${color('red', `No page named “${name}”.`)}\nTry: pages`;
    return wrap((item.lines || []).join('\n')).join('\n');
  };

  add({ name: 'home', description: 'Return home', run: () => {
    const p = api.config.persona || {};
    const status = api.ownerOnline() ? color('green', 'Owner is online') : color(api.config.theme?.muted || 'brightBlack', 'Owner is offline');
    return `${color(api.config.theme?.accent || 'yellow', `Welcome to ${p.name || 'my portfolio'}`)}\n\n${wrap(p.bio || 'You are exploring a portfolio over SSH. Type “help” to get started.').join('\n')}\n\n${status}\n\nCommands: home · pages · open <page> · chat · contact · clear · quit`;
  }});
  add({ name: 'help', description: 'Show this help', run: ctx => {
    const actions = [...commands.values()].filter(c => !c.admin || api.isAdmin(ctx)).map(c => `${c.name.padEnd(18)} ${c.description}`);
    const pages = Object.entries(api.config.pages || {}).filter(([name]) => !commands.has(name)).map(([name, item]) => `${name.padEnd(18)} Open ${item.title || name}`);
    return [...actions, ...pages].join('\n');
  }});
  add({ name: 'pages', description: 'List available pages', run: () => Object.entries(api.config.pages || {}).map(([name, item]) => `${color(api.config.theme?.accent || 'yellow', name.padEnd(14))} ${item.title || ''}`).join('\n') || 'No pages configured.' });
  add({ name: 'open', description: 'Open a page', run: (ctx, arg) => arg ? page(arg) : 'Usage: open <page>' });
  add({ name: 'contact', description: 'Show contact details', run: () => `Email: ${api.config.persona?.email || 'not configured'}` });
  add({ name: 'chat', description: 'Chat with the owner/visitors', run: (ctx, arg) => {
    if (!arg) return 'Usage: chat <message>';
    const author = api.isAdmin(ctx) ? `${api.config.persona?.name || 'Owner'} [owner]` : (ctx.username || 'visitor');
    const line = `${author}: ${arg}`; api.broadcast(line); api.sendNotification(line); return api.ownerOnline() ? 'Message sent to the owner.' : 'Message posted; the owner is currently offline.';
  }});
  add({ name: 'clear', description: 'Clear the screen', run: () => '' });
  add({ name: 'quit', description: 'Disconnect', run: ctx => { ctx.channel?.end(); return ''; } });
  add({ name: 'reload', description: 'Reload configuration', admin: true, run: () => { api.reload(); return 'Configuration reloaded.'; } });
  add({ name: 'theme', description: 'Set runtime primary color', admin: true, run: (ctx, arg) => { if (!arg) return 'Usage: theme <color>'; api.config.theme.primary = arg; return `Primary color set to ${arg} (runtime only).`; } });
  add({ name: 'announce', description: 'Broadcast an announcement', admin: true, run: (ctx, arg) => { if (!arg) return 'Usage: announce <message>'; api.broadcast(`OWNER: ${arg}`); api.sendNotification(`OWNER: ${arg}`); return 'Announcement sent.'; } });

  return {
    home: ctx => commands.get('home').run(ctx, ''),
    execute(ctx, input) {
      const [name, ...rest] = input.trim().split(/\s+/); const command = commands.get(name || 'home') || (api.config.pages?.[name] ? { run: () => page(name) } : null);
      if (!command || (command.admin && !api.isAdmin(ctx))) return `Unknown command: ${name}. Try “help”.`;
      return command.run(ctx, rest.join(' '));
    }
  };
}