new room class methods demo

example/room-bot.js

+const {
+  Wechaty
+  , Config
+  , Room
+  , Contact
+  , Message
+  , log
+} = require('.')
+
+const welcome = `
+=============== Powered by Wechaty ===============
+-------- https://github.com/wechaty/wechaty --------
+
+Hello,
+
+I'm a Wechaty Botie with the following super powers:
+
+1. Find a room
+2. Add people to room
+3. Del people from room
+4. Change room topic
+5. Monitor room events
+6. etc...
+
+If you send a message of magic word 'ding',
+you will get a invitation to join my own room!
+__________________________________________________
+
+Hope you like it, and you are very welcome to
+upgrade me for more super powers!
+
+Please wait... I'm trying to login in...
+
+`
+console.log(welcome)
+const bot = new Wechaty({ profile: Config.DEFAULT_PROFILE })
+
+bot
+.on('scan', ({url, code}) => {
+  console.log(`Use Wechat to Scan QR Code in url to login: ${code}\n${url}`)
+})
+.on('login'	  , user => {
+  log.info('Bot', `${user.name()} logined`)
+  setTimeout(_ => {
+    Room.find({ name: /^ding/i })
+        .then(room => {
+          log.info('Bot', 'start monitor "ding" room join/leave event')
+          room.on('join', (invitee, inviter) => {
+            try {
+              log.info('Bot', 'room event: %s join, invited by %s', invitee.name(), inviter.name())
+              const m = new Message()
+              m.set('room', room.id)
+              if (inviter.id !== bot.user().id) {
+                m.set('to', inviter.id)
+                m.set('content', `@${inviter.name()} RULE1: Invitation is limited to me, the owner only. Please do not invit people without notify me.`)
+                bot.send(m)
+
+                m.set('to', invitee.id)
+                m.set('content', `@${invitee.name()} Please contact me: by send "ding" to me, I will re-sed you a invitation. Now I will remove you out, sorry.`)
+                bot.send(m)
+
+                room.topic('ding - warn ' + inviter.name())
+                room.del(invitee)
+              } else {
+                m.set('to', invitee.id)
+                m.set('content', `@${invitee.name()} Welcome to my room! :)`)
+                bot.send(m)
+                room.topic('ding - welcome ' + invitee.name())
+              }
+            } catch (e) {
+              log.error('room join event exception: %s', e.stack)
+            }
+          })
+          room.on('leave', (leaver) => {
+            log.info('Bot', 'room event: %s leave, byebye', leaver.name())
+          })
+        })
+        .catch(e => {
+          log.warn('Bot', 'there is no room named ding(yet)')
+        })
+  }, 3000)
+})
+.on('room-join', (room, invitee, inviter) => {
+  log.info('Bot', 'room-join event: Room %s got new member %s, invited by %s'
+                , room.toic()
+                , invitee.name()
+                , inviter.name()
+          )
+})
+.on('room-leave', (room, leaver) => {
+  log.info('Bot', 'room-leave event: Room %s lost member %s'
+                , room.topic()
+                , leaver.name()
+              )
+})
+.on('logout'	, user => log.info('Bot', `${user.name()} logouted`))
+.on('error'   , e => log.info('Bot', 'error: %s', e))
+.on('message', m => {
+  const room = m.room()
+  const from = m.from()
+
+  console.log((room ? '['+room.topic()+']' : '')
+              + '<'+from.name()+'>'
+              + ':' + m.toStringDigest()
+  )
+
+  if (bot.self(m)) {
+    return
+  }
+
+  const noticeMessage = new Message()
+  noticeMessage.set('to', from)
+  /**
+   * `ding` will be the magic(toggle) word:
+   *  1. say ding first time, will got a room invitation
+   *  2. say ding in room, will be removed out
+   */
+  if ('ding' === m.get('content')) {
+    if (m.room()) {
+      if (/^ding/i.test(room.topic())) {
+        noticeMessage.set('content', 'You said "ding" in my room, I will remove you out.')
+        bot.send(noticeMessage)
+        room.del(m.from())
+      }
+    } else {
+      var contact = m.from()
+      Room.find({ name: /^ding/i })
+          .then(room => {
+            if (room) {
+              room.add(contact)
+                  .catch(e => {
+                    log.error('Bot', 'room.add() exception: %s', e.stack)
+                  })
+            } else {
+              Contact.find({ name: 'Bruce LEE' })
+                      .then(c => {
+                        Room.create([contact, c], 'ding')
+                            .then(_ => {
+                              log.info('Bot', 'ding room not found, created one')
+                            })
+                            .catch(e => {
+                              log.error('Bot', 'ding room create fail: %s', e.stack)
+                            })
+
+                      })
+                      .catch(e => {
+                        log.error('Bot', 'Contact.find not found')
+                      })
+            }
+          })
+    }
+  }
+})
+.init()
+.catch(e => console.error(e))