/** Slash-command table for /bin/irc (modern client + common aliases). */

var BARE_IRC_FEATURED_ROOMS = [
  { name: '#libera', users: '', topic: 'Official Libera.Chat help' },
  { name: '#linux', users: '', topic: 'Linux discussion' },
  { name: '#programming', users: '', topic: 'Programming' },
  { name: '#javascript', users: '', topic: 'JavaScript' },
  { name: '#python', users: '', topic: 'Python' },
  { name: '#rust', users: '', topic: 'Rust' },
  { name: '#archlinux', users: '', topic: 'Arch Linux' },
  { name: '#debian', users: '', topic: 'Debian' },
  { name: '#ubuntu', users: '', topic: 'Ubuntu' },
  { name: '#vim', users: '', topic: 'Vim' },
  { name: '#emacs', users: '', topic: 'Emacs' },
  { name: '#git', users: '', topic: 'Git' }
]

function bareIrcNeedTarget(buf) {
  return buf && buf.kind && buf.kind !== 'server' ? buf.name : ''
}

function bareIrcModeNicks(client, chan, flag, nicks) {
  if (!chan || !nicks.length) return false
  var i
  for (i = 0; i < nicks.length; i++) {
    client.sendRaw('MODE', [chan, flag, nicks[i]])
  }
  return true
}

function bareIrcRunSlash(client, rawLine, opts) {
  opts = opts || {}
  var buf = opts.buf || null
  var ctx = opts.ctx
  var line = String(rawLine || '').trim()
  var out = {
    ok: true,
    help: false,
    rooms: false,
    roomsQuery: '',
    quit: false,
    close: false,
    clear: false,
    usage: '',
    note: ''
  }
  if (!line || line.charAt(0) !== '/') {
    out.ok = false
    return out
  }
  var body = line.slice(1)
  var sp = body.search(/\s/)
  var cmd = (sp < 0 ? body : body.slice(0, sp)).toLowerCase()
  var rest = sp < 0 ? '' : body.slice(sp + 1).trim()
  var parts = rest ? rest.split(/\s+/) : []
  var chan = bareIrcNeedTarget(buf)

  if (cmd === 'help' || cmd === 'h' || cmd === '?') {
    out.help = true
    return out
  }
  if (cmd === 'quit' || cmd === 'exit') {
    client.quit(rest || 'Leaving')
    out.quit = true
    return out
  }
  if (cmd === 'disconnect') {
    client.quit(rest || 'Disconnect')
    return out
  }
  if (cmd === 'reconnect') {
    if (opts.reconnect) opts.reconnect()
    else out.note = 'reconnect unavailable'
    return out
  }
  if (cmd === 'join' || cmd === 'j') {
    if (!parts[0]) {
      out.usage = '/join #channel [key]'
      return out
    }
    client.join(parts[0], parts[1])
    return out
  }
  if (cmd === 'part' || cmd === 'leave') {
    var pchan = parts[0] && parts[0].charAt(0) === '#' ? parts.shift() : chan
    if (!pchan) {
      out.usage = '/part [#channel] [reason]'
      return out
    }
    client.part(pchan, parts.join(' '))
    return out
  }
  if (cmd === 'cycle' || cmd === 'hop') {
    var cchan = parts[0] || chan
    if (!cchan) {
      out.usage = '/cycle [#channel]'
      return out
    }
    client.part(cchan, 'cycling')
    client.join(cchan)
    return out
  }
  if (cmd === 'query' || cmd === 'q') {
    if (!parts[0]) {
      out.usage = '/query NICK [text]'
      return out
    }
    var qb = bareIrcEnsureBuffer(client.state, 'query', parts[0])
    client.state.currentId = qb.id
    if (parts.slice(1).join(' '))
      client.sendPrivmsg(parts[0], parts.slice(1).join(' '))
    return out
  }
  if (cmd === 'msg' || cmd === 'privmsg' || cmd === 'm') {
    if (!parts[0] || !parts.slice(1).join(' ')) {
      out.usage = '/msg TARGET text'
      return out
    }
    client.sendPrivmsg(parts[0], parts.slice(1).join(' '))
    return out
  }
  if (cmd === 'notice') {
    if (!parts[0] || !parts.slice(1).join(' ')) {
      out.usage = '/notice TARGET text'
      return out
    }
    client.sendRaw('NOTICE', [parts[0], parts.slice(1).join(' ')])
    return out
  }
  if (cmd === 'nick') {
    if (!parts[0]) {
      out.usage = '/nick NEWNICK'
      return out
    }
    client.sendRaw('NICK', [parts[0]])
    return out
  }
  if (cmd === 'whois') {
    if (!parts[0]) {
      out.usage = '/whois NICK'
      return out
    }
    client.sendRaw(
      'WHOIS',
      parts.length > 1 ? [parts[0], parts[1]] : [parts[0]]
    )
    return out
  }
  if (cmd === 'whowas') {
    if (!parts[0]) {
      out.usage = '/whowas NICK'
      return out
    }
    client.sendRaw('WHOWAS', [parts[0]])
    return out
  }
  if (cmd === 'who') {
    client.sendRaw('WHO', [parts[0] || chan || '*'])
    return out
  }
  if (cmd === 'names') {
    client.sendRaw('NAMES', [parts[0] || chan || ''].filter(Boolean))
    return out
  }
  if (cmd === 'topic') {
    var tchan = chan
    var topic = rest
    if (
      parts[0] &&
      (parts[0].charAt(0) === '#' || parts[0].charAt(0) === '&')
    ) {
      tchan = parts[0]
      topic = parts.slice(1).join(' ')
    }
    if (!tchan) {
      out.usage = '/topic [#channel] [text]'
      return out
    }
    if (topic) client.sendRaw('TOPIC', [tchan, topic])
    else client.sendRaw('TOPIC', [tchan])
    return out
  }
  if (cmd === 'me' || cmd === 'action') {
    if (!rest || !chan) {
      out.usage = '/me action text  (in a channel or query)'
      return out
    }
    client.sendPrivmsg(chan, '\x01ACTION ' + rest + '\x01')
    return out
  }
  if (cmd === 'away') {
    client.sendRaw('AWAY', rest ? [rest] : [])
    return out
  }
  if (cmd === 'back') {
    client.sendRaw('AWAY', [])
    return out
  }
  if (cmd === 'quote' || cmd === 'raw') {
    if (!rest) {
      out.usage = '/quote COMMAND [params]'
      return out
    }
    var qparts = rest.split(/\s+/)
    client.sendRaw(qparts[0], qparts.slice(1))
    return out
  }
  if (cmd === 'list' || cmd === 'rooms' || cmd === 'browse') {
    out.rooms = true
    out.roomsQuery = rest
    return out
  }
  if (cmd === 'motd') {
    client.sendRaw('MOTD', parts[0] ? [parts[0]] : [])
    return out
  }
  if (cmd === 'lusers') {
    client.sendRaw('LUSERS', parts)
    return out
  }
  if (cmd === 'admin') {
    client.sendRaw('ADMIN', parts[0] ? [parts[0]] : [])
    return out
  }
  if (cmd === 'info') {
    client.sendRaw('INFO', parts[0] ? [parts[0]] : [])
    return out
  }
  if (cmd === 'time') {
    client.sendRaw('TIME', parts[0] ? [parts[0]] : [])
    return out
  }
  if (cmd === 'links') {
    client.sendRaw('LINKS', parts)
    return out
  }
  if (cmd === 'map') {
    client.sendRaw('MAP', [])
    return out
  }
  if (cmd === 'rules') {
    client.sendRaw('RULES', [])
    return out
  }
  if (cmd === 'stats') {
    client.sendRaw('STATS', parts[0] ? parts : ['u'])
    return out
  }
  if (cmd === 'version') {
    if (parts[0] && parts[0].charAt(0) !== '#') {
      client.sendRaw('PRIVMSG', [parts[0], '\x01VERSION\x01'])
      return out
    }
    client.sendRaw('VERSION', parts[0] ? [parts[0]] : [])
    return out
  }
  if (cmd === 'userhost') {
    if (!parts[0]) {
      out.usage = '/userhost NICK [NICK...]'
      return out
    }
    client.sendRaw('USERHOST', parts.slice(0, 5))
    return out
  }
  if (cmd === 'ison') {
    if (!parts[0]) {
      out.usage = '/ison NICK [NICK...]'
      return out
    }
    client.sendRaw('ISON', parts)
    return out
  }
  if (cmd === 'mode') {
    if (!parts[0]) {
      out.usage = '/mode TARGET [modes] [args]'
      return out
    }
    client.sendRaw('MODE', parts)
    return out
  }
  if (cmd === 'umode') {
    client.sendRaw(
      'MODE',
      [client.state.nick].concat(parts.length ? parts : [])
    )
    return out
  }
  if (cmd === 'kick') {
    var kchan = chan
    var knick = parts[0]
    var kreason = parts.slice(1).join(' ')
    if (
      parts[0] &&
      (parts[0].charAt(0) === '#' || parts[0].charAt(0) === '&')
    ) {
      kchan = parts[0]
      knick = parts[1]
      kreason = parts.slice(2).join(' ')
    }
    if (!kchan || !knick) {
      out.usage = '/kick [channel] NICK [reason]'
      return out
    }
    client.sendRaw('KICK', kreason ? [kchan, knick, kreason] : [kchan, knick])
    return out
  }
  if (cmd === 'invite') {
    if (!parts[0]) {
      out.usage = '/invite NICK [#channel]'
      return out
    }
    var ichan = parts[1] || chan
    if (!ichan) {
      out.usage = '/invite NICK #channel'
      return out
    }
    client.sendRaw('INVITE', [parts[0], ichan])
    return out
  }
  if (cmd === 'ban') {
    if (!chan) {
      out.usage = '/ban [mask]  (in a channel)'
      return out
    }
    if (!parts[0]) client.sendRaw('MODE', [chan, '+b'])
    else client.sendRaw('MODE', [chan, '+b', parts[0]])
    return out
  }
  if (cmd === 'unban') {
    if (!chan || !parts[0]) {
      out.usage = '/unban mask  (in a channel)'
      return out
    }
    client.sendRaw('MODE', [chan, '-b', parts[0]])
    return out
  }
  if (cmd === 'op') {
    if (!chan || !parts[0]) {
      out.usage = '/op NICK [NICK...]  (in a channel)'
      return out
    }
    bareIrcModeNicks(client, chan, '+o', parts)
    return out
  }
  if (cmd === 'deop') {
    if (!chan || !parts[0]) {
      out.usage = '/deop NICK [NICK...]'
      return out
    }
    bareIrcModeNicks(client, chan, '-o', parts)
    return out
  }
  if (cmd === 'voice') {
    if (!chan || !parts[0]) {
      out.usage = '/voice NICK [NICK...]'
      return out
    }
    bareIrcModeNicks(client, chan, '+v', parts)
    return out
  }
  if (cmd === 'devoice') {
    if (!chan || !parts[0]) {
      out.usage = '/devoice NICK [NICK...]'
      return out
    }
    bareIrcModeNicks(client, chan, '-v', parts)
    return out
  }
  if (cmd === 'knock') {
    if (!parts[0]) {
      out.usage = '/knock #channel [message]'
      return out
    }
    client.sendRaw(
      'KNOCK',
      parts.slice(1).join(' ')
        ? [parts[0], parts.slice(1).join(' ')]
        : [parts[0]]
    )
    return out
  }
  if (cmd === 'ctcp') {
    if (!parts[0] || !parts[1]) {
      out.usage = '/ctcp NICK CMD [args]'
      return out
    }
    var ctcp =
      parts[1].toUpperCase() +
      (parts.slice(2).join(' ') ? ' ' + parts.slice(2).join(' ') : '')
    client.sendRaw('PRIVMSG', [parts[0], '\x01' + ctcp + '\x01'])
    return out
  }
  if (cmd === 'ping') {
    if (parts[0]) {
      client.sendRaw('PRIVMSG', [parts[0], '\x01PING ' + Date.now() + '\x01'])
    } else {
      client.sendRaw('PING', [client.state.nick || 'irc'])
    }
    return out
  }
  if (cmd === 'ignore') {
    if (!parts[0]) {
      var keys = Object.keys(client.state.ignore || {})
      out.note = keys.length
        ? 'ignoring: ' + keys.join(', ')
        : 'ignore list empty'
      return out
    }
    if (!client.state.ignore) client.state.ignore = {}
    client.state.ignore[
      bareIrcCasemap(parts[0], bareIrcCasemapping(client.state.isupport))
    ] = parts[0]
    out.note = 'ignoring ' + parts[0]
    return out
  }
  if (cmd === 'unignore') {
    if (!parts[0]) {
      out.usage = '/unignore NICK'
      return out
    }
    if (client.state.ignore) {
      delete client.state.ignore[
        bareIrcCasemap(parts[0], bareIrcCasemapping(client.state.isupport))
      ]
    }
    out.note = 'unignored ' + parts[0]
    return out
  }
  if (cmd === 'clear') {
    out.clear = true
    return out
  }
  if (cmd === 'close' || cmd === 'wc') {
    out.close = true
    return out
  }
  if (cmd === 'win' || cmd === 'buffer' || cmd === 'window') {
    var n = parseInt(parts[0], 10)
    var list = bareIrcListBuffers(client.state)
    if (n >= 1 && n <= list.length) client.state.currentId = list[n - 1].id
    else out.usage = '/win N   (1–' + list.length + ')'
    return out
  }
  if (cmd === 'p2p') {
    if (parts[0] === 'open' && parts[1]) {
      var name = String(parts[1])
      if (name.indexOf('[p2p]') < 0) name = name + ' [p2p]'
      var pb = bareIrcEnsureBuffer(client.state, 'p2p', name)
      client.state.currentId = pb.id
      bareIrcPushLine(client.state, pb, {
        atMs: Date.now(),
        kind: 'info',
        text: 'Shadow room — not Libera. Messages stay on the swarm sideband.'
      })
      if (ctx && typeof ctx.bareOsIrcShadowOpen === 'function') {
        try {
          ctx.bareOsIrcShadowOpen(parts[1])
        } catch (e) {
          /* ignore */
        }
      }
      return out
    }
    out.usage = '/p2p open #name'
    return out
  }
  if (cmd === 'oper') {
    if (parts.length < 2) {
      out.usage = '/oper USER PASS'
      return out
    }
    client.sendRaw('OPER', [parts[0], parts[1]])
    return out
  }
  if (cmd === 'squery') {
    if (!parts[0] || !parts.slice(1).join(' ')) {
      out.usage = '/squery SERVICE text'
      return out
    }
    client.sendRaw('SQUERY', [parts[0], parts.slice(1).join(' ')])
    return out
  }
  if (cmd === 'set') {
    out.note = 'config is ~/.irc/config.json (nick, autojoin, saslUser)'
    return out
  }
  if (cmd === 'server') {
    out.note =
      (client.state.network || 'irc') +
      ' ' +
      (client.opts.host || '') +
      ':' +
      (client.opts.port || '')
    return out
  }

  out.ok = false
  out.usage = 'unknown command /' + cmd + '   try /help'
  return out
}