From 39d97343a5f54a4e8b01f946e34ef5403f0dc93a Mon Sep 17 00:00:00 2001
From: Sharon Kennedy <sharon@nomadiclabs.ca>
Date: Wed, 22 Apr 2020 15:51:02 -0400
Subject: [PATCH] leave empty rooms

---
 src/bot.js | 102 +++++++++++++++++++++++++++++++++++------------------
 1 file changed, 67 insertions(+), 35 deletions(-)

diff --git a/src/bot.js b/src/bot.js
index 2d89cf5..2dec374 100644
--- a/src/bot.js
+++ b/src/bot.js
@@ -42,21 +42,26 @@ class OcrccBot {
 
   async sendMessage(roomId, content) {
     logger.log("info", `SENDING MESSAGE: ${content.body}`)
-    return this.client.sendMessage(roomId, content).catch(err => {
+    try {
+      await this.client.sendMessage(roomId, content)
+    } catch(err) {
       switch (err["name"]) {
         case "UnknownDeviceError":
           Object.keys(err.devices).forEach(userId => {
             Object.keys(err.devices[userId]).map(async deviceId => {
-              await this.client.setDeviceVerified(userId, deviceId, true);
+              try {
+                await this.client.setDeviceVerified(userId, deviceId, true);
+              } catch(err) {
+                logger.log("error", `ERROR VERIFYING DEVICE: ${err}`);
+              }
             });
           });
           return this.sendMessage(roomId, content);
-          break;
         default:
           logger.log("error", `ERROR SENDING MESSAGE: ${err}`);
           break;
       }
-    });
+    }
   }
 
   inviteUserToRoom(roomId, member) {
@@ -98,7 +103,7 @@ class OcrccBot {
       });
 
       if (chatOffline) {
-        logger.log('info', "CHAT OFFLINE!")
+        logger.log('info', "NO FACILITATORS ONLINE")
         this.sendTextMessage(roomId, this.config.CHAT_OFFLINE_MESSAGE);
       }
 
@@ -185,6 +190,9 @@ class OcrccBot {
       const command = content.body.substring("!bot".length).trim();
 
       switch (command) {
+        case "purge rooms":
+          this.leaveEmptyRooms(senderId);
+          break;
         case "transcript":
           this.sendTranscript(senderId, roomId);
           break;
@@ -216,6 +224,26 @@ class OcrccBot {
     }
   }
 
+  async leaveEmptyRooms(senderId) {
+    try {
+      const roomData = await this.client.getJoinedRooms()
+      const joinedRoomsIds = roomData["joined_rooms"]
+      joinedRoomsIds.forEach(async roomId => {
+        const room = this.client.getRoom(roomId)
+        if (room && room.getJoinedMemberCount() === 1) {
+          try {
+            logger.log('info', "LEAVING EMPTY ROOM => " + roomId)
+            await this.client.leave(roomId)
+          } catch(err) {
+            logger.log('error', "ERROR LEAVING EMPTY ROOM => " + err)
+          }
+        }
+      })
+    } catch(err) {
+      logger.log("error", `ERROR GETTING JOINED ROOMS: ${err}`);
+    }
+  }
+
   async sendTranscript(senderId, roomId) {
     try {
       const transcriptFile = this.activeChatrooms[roomId]
@@ -278,22 +306,10 @@ class OcrccBot {
     }
   }
 
-  async leaveOldRooms() {
+  async trackJoinedRooms() {
     const roomData = await this.client.getJoinedRooms()
-    const joinedRoomsIds = roomData["joined_rooms"]
-    this.joinedRooms = joinedRoomsIds
-
-    logger.log("info", `LEAVING ROOMS ${joinedRoomsIds}`)
-
-    joinedRoomsIds.forEach(async(roomId) => {
-      if (roomId === this.config.FACILITATOR_ROOM_ID) return;
-
-      try {
-        await this.client.leave(roomId)
-      } catch(err) {
-        logger.log("error", `ERROR LEAVING ROOM => ${err}`)
-      }
-    })
+    this.joinedRooms = roomData["joined_rooms"]
+    logger.log("info", "JOINED ROOMS => " + this.joinedRooms)
   }
 
   async setMembershipListeners() {
@@ -304,16 +320,17 @@ class OcrccBot {
         member.userId === this.config.BOT_USERID &&
         !this.joinedRooms.includes(member.roomId)
       ) {
+
         try {
-          logger.log("info", "Auto-joining room " + member.roomId);
           const room = await this.client.joinRoom(member.roomId)
+          logger.log("info", "AUTO JOINED ROOM" + room.roomId)
           this.sendTextMessage(
             this.config.FACILITATOR_ROOM_ID,
-            `A support seeker requested a chat (Room ID: ${member.roomId})`
+            `A support seeker requested a chat (Room ID: ${room.roomId})`
           );
-          this.inviteFacilitators(member.roomId)
+          this.inviteFacilitators(room.roomId)
         } catch(err) {
-          logger.log("error", err);
+          logger.log("error", "ERROR JOINING ROOM =>" + err)
         }
       }
 
@@ -369,19 +386,23 @@ class OcrccBot {
 
       if (
         member.membership === "leave" &&
-        member.userId !== this.config.BOT_USERID &&
-        this.activeChatrooms[member.roomId] &&
-        member.userId === this.activeChatrooms[member.roomId].facilitator
+        member.userId !== this.config.BOT_USERID
       ) {
-        this.sendTextMessage(
-          member.roomId,
-          `${member.name} has left the chat.`
-        );
 
+        if (this.activeChatrooms[member.roomId] && member.userId === this.activeChatrooms[member.roomId].facilitator) {
+          this.sendTextMessage(
+            member.roomId,
+            `${member.name} has left the chat.`
+          );
+        }
+
+        // leave if there is nobody in the room
         const room = this.client.getRoom(member.roomId)
+        if (!room) return
+
         const memberCount = room.getJoinedMemberCount()
 
-        if (memberCount === 1) {
+        if (memberCount === 1) { // just the bot
           logger.log("info", `LEAVING EMPTY ROOM ==> ${member.roomId}`);
           this.client.leave(event.roomId)
         }
@@ -407,6 +428,18 @@ class OcrccBot {
     });
   }
 
+  async leaveOldRooms() {
+    const roomData = await this.client.getJoinedRooms()
+
+    roomData["joined_rooms"].forEach(async roomId => {
+      try {
+        await this.client.leave(roomId)
+      } catch(err) {
+       logger.log('error', "ERROR LEAVING ROOM => " + err)
+      }
+    })
+  }
+
   async start() {
     const localStorage = this.createLocalStorage();
 
@@ -429,10 +462,9 @@ class OcrccBot {
 
       this.client = matrix.createClient(opts);
       await this.deleteOldDevices()
-      await this.leaveOldRooms();
+      await this.trackJoinedRooms()
       await this.client.initCrypto()
-
-      this.setMembershipListeners();
+      await this.setMembershipListeners();
       this.setMessageListeners();
       this.client.startClient({ initialSyncLimit: 0 })
     } catch(err) {