Talking to Easybridge is now possible for some things

3 files changed, 125 insertions, 22 deletions

diff --git a/appservice/account.go b/appservice/account.go
index 013a420..e507230 100644
--- a/appservice/account.go
+++ b/appservice/account.go
@@ -25,6 +25,7 @@ func AddAccount(a *Account) {
 		registeredAccounts[a.MatrixUser] = make(map[string]*Account)
 	}
 	registeredAccounts[a.MatrixUser][a.AccountName] = a
+	ezbrSystemSendf(a.MatrixUser, "Connecting to account %s (%s)", a.AccountName, a.Protocol)
 }
 
 func FindAccount(mxUser string, name string) *Account {
@@ -104,9 +105,13 @@ func (a *Account) leftInternal(roomId RoomID) error {
 		return err
 	}
 
-	log.Printf("Joined %s (%s)\n", roomId, a.MatrixUser)
+	log.Printf("Left %s (%s)\n", roomId, a.MatrixUser)
 
-	return mxRoomKick(mx_room_id, a.MatrixUser, fmt.Sprintf("got leave room event on %s", a.Protocol))
+	err = mxRoomKick(mx_room_id, a.MatrixUser, fmt.Sprintf("got leave room event on %s", a.Protocol))
+	if err != nil && strings.Contains(err.Error(), "not in the room") {
+		err = nil
+	}
+	return err
 }
 
 // ----
diff --git a/appservice/matrix.go b/appservice/matrix.go
index a212d85..a1cc759 100644
--- a/appservice/matrix.go
+++ b/appservice/matrix.go
@@ -14,12 +14,14 @@ import (
 	"git.deuxfleurs.fr/Deuxfleurs/easybridge/connector"
 )
 
+const EASYBRIDGE_SYSTEM_PROTOCOL string = "✯◡✯"
+
 func ezbrMxId() string {
 	return fmt.Sprintf("@%s:%s", registration.SenderLocalpart, config.MatrixDomain)
 }
 
 func ezbrSystemRoom(user_mx_id string) (string, error) {
-	return dbGetMxPmRoom("system", connector.UserID("Easybridge"), ezbrMxId(), user_mx_id, "easybridge")
+	return dbGetMxPmRoom(EASYBRIDGE_SYSTEM_PROTOCOL, connector.UserID("Easybridge"), ezbrMxId(), user_mx_id, "easybridge")
 }
 
 func ezbrSystemSend(user_mx_id string, msg string) {
@@ -32,6 +34,10 @@ func ezbrSystemSend(user_mx_id string, msg string) {
 	}
 }
 
+func ezbrSystemSendf(user_mx_id string, format string, args ...interface{}) {
+	ezbrSystemSend(user_mx_id, fmt.Sprintf(format, args...))
+}
+
 // ----
 
 var httpClient *http.Client
diff --git a/appservice/server.go b/appservice/server.go
index f207eb4..33e095a 100644
--- a/appservice/server.go
+++ b/appservice/server.go
@@ -77,14 +77,22 @@ func handleTxn(w http.ResponseWriter, r *http.Request) {
 		err := json.NewDecoder(r.Body).Decode(&txn)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusBadRequest)
-			log.Printf("JSON decode error: %s\n", err)
+			log.Warnf("JSON decode error: %s\n", err)
 			return
 		}
 
 		log.Debugf("Got transaction %#v\n", txn)
 
 		for i := range txn.Events {
-			handleTxnEvent(&txn.Events[i])
+			ev := &txn.Events[i]
+			if ev.Sender == ezbrMxId() {
+				// Don't do anything with events originating from the system
+				continue
+			}
+			err = handleTxnEvent(ev)
+			if err != nil {
+				ezbrSystemSend(ev.Sender, fmt.Sprintf("Could not process %s (%s): %s", ev.Type, ev.Sender, err))
+			}
 		}
 
 		fmt.Fprintf(w, "{}\n")
@@ -93,7 +101,7 @@ func handleTxn(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func handleTxnEvent(e *mxlib.Event) {
+func handleTxnEvent(e *mxlib.Event) error {
 	if e.Type == "m.room.message" {
 		ev := &connector.Event{
 			Type: connector.EVENT_MESSAGE,
@@ -104,56 +112,140 @@ func handleTxnEvent(e *mxlib.Event) {
 			ev.Type = connector.EVENT_MESSAGE
 		}
 
-		// Look up if this is a private message room
 		if pm_room := dbIsPmRoom(e.RoomId); pm_room != nil {
+			if pm_room.Protocol == EASYBRIDGE_SYSTEM_PROTOCOL {
+				handleSystemMessage(e.Sender, e.Content["body"].(string))
+				return nil
+			}
+			// If this is a private message room
 			acct := FindAccount(pm_room.MxUserID, pm_room.AccountName)
-			if acct != nil && e.Sender == pm_room.MxUserID {
+			if acct == nil {
+				return fmt.Errorf("Not connected to %s", pm_room.AccountName)
+			} else if e.Sender == pm_room.MxUserID {
 				ev.Author = acct.Conn.User()
 				ev.Recipient = pm_room.UserID
-				acct.Conn.Send(ev)
+				return acct.Conn.Send(ev)
 			}
-		}
-
-		// Look up if this is a regular room
-		if room := dbIsPublicRoom(e.RoomId); room != nil {
+		} else if room := dbIsPublicRoom(e.RoomId); room != nil {
+			// If this is a regular room
 			acct := FindJoinedAccount(e.Sender, room.Protocol, room.RoomID)
 			if acct != nil {
 				ev.Author = acct.Conn.User()
 				ev.Room = room.RoomID
-				acct.Conn.Send(ev)
+				return acct.Conn.Send(ev)
 			} else {
-				log.Debugf("Could not find room account for %s %s %s", e.Sender, room.Protocol, room.RoomID)
+				mxRoomKick(e.RoomId, e.Sender, fmt.Sprintf("Not present in %s on %s, please talk with Easybridge to rejoin", room.RoomID, room.Protocol))
+				return fmt.Errorf("not joined %s on %s", room.RoomID, room.Protocol)
 			}
+		} else {
+			return fmt.Errorf("Room not bridged")
 		}
 	} else if e.Type == "m.room.member" {
 		ms := e.Content["membership"].(string)
 		if ms == "leave" {
-			// If leaving a PM room, we must delete it
 			if pm_room := dbIsPmRoom(e.RoomId); pm_room != nil {
+				// If leaving a PM room, we must delete it
 				them_mx := userMxId(pm_room.Protocol, pm_room.UserID)
 				mxRoomLeaveAs(e.RoomId, them_mx)
 				db.Delete(pm_room)
-			}
-
-			// If leaving a public room, leave from server as well
-			if room := dbIsPublicRoom(e.RoomId); room != nil {
+				return nil
+			} else if room := dbIsPublicRoom(e.RoomId); room != nil {
+				// If leaving a public room, leave from server as well
 				acct := FindJoinedAccount(e.Sender, room.Protocol, room.RoomID)
 				if acct != nil {
 					acct.Conn.Leave(room.RoomID)
+					return nil
 					// TODO: manage autojoin list, remove this room
 				} else {
-					log.Debugf("Could not find room account for %s %s %s", e.Sender, room.Protocol, room.RoomID)
+					mxRoomKick(e.RoomId, e.Sender, fmt.Sprintf("Not present in %s on %s, please talk with Easybridge to rejoin", room.RoomID, room.Protocol))
+					return fmt.Errorf("not joined %s on %s", room.RoomID, room.Protocol)
 				}
+			} else {
+				return fmt.Errorf("Room not bridged")
 			}
 		}
 	} else if e.Type == "m.room.topic" {
 		if room := dbIsPublicRoom(e.RoomId); room != nil {
 			acct := FindJoinedAccount(e.Sender, room.Protocol, room.RoomID)
 			if acct != nil {
-				acct.Conn.SetRoomInfo(room.RoomID, &connector.RoomInfo{
+				return acct.Conn.SetRoomInfo(room.RoomID, &connector.RoomInfo{
 					Topic: e.Content["topic"].(string),
 				})
+			} else {
+				return fmt.Errorf("Could not find room account for %s %s %s", e.Sender, room.Protocol, room.RoomID)
+			}
+		}
+	}
+	return nil
+}
+
+func handleSystemMessage(mxid string, msg string) {
+	cmd := strings.Fields(msg)
+	switch cmd[0] {
+	case "help":
+		ezbrSystemSend(mxid, "Welcome to Easybridge! Here is a list of available commands:")
+		ezbrSystemSend(mxid, "- help: request help")
+		ezbrSystemSend(mxid, "- list: list accounts")
+		ezbrSystemSend(mxid, "- accounts: list accounts")
+		ezbrSystemSend(mxid, "- join <protocol or account> <room id>: join public chat room")
+		ezbrSystemSend(mxid, "- query <protocol or account> <user id>: open private buffer to contact")
+	case "list":
+	case "account":
+	case "accounts":
+		one := false
+		if accts, ok := registeredAccounts[mxid]; ok {
+			for name, acct := range accts {
+				one = true
+				ezbrSystemSendf(mxid, "- %s (%s)", name, acct.Protocol)
+			}
+		}
+		if !one {
+			ezbrSystemSendf(mxid, "No account currently configured")
+		}
+	case "join":
+		var account *Account
+		if accts, ok := registeredAccounts[mxid]; ok {
+			for name, acct := range accts {
+				if name == cmd[1] || acct.Protocol == cmd[1] {
+					account = acct
+					break
+				}
+			}
+		}
+		if account != nil {
+			err := account.Conn.Join(connector.RoomID(cmd[2]))
+			if err != nil {
+				ezbrSystemSendf(mxid, "%s", err)
+			}
+		} else {
+			ezbrSystemSendf(mxid, "No account with name or using protocol %s", cmd[1])
+		}
+	case "query":
+		var account *Account
+		if accts, ok := registeredAccounts[mxid]; ok {
+			for name, acct := range accts {
+				if name == cmd[1] || acct.Protocol == cmd[1] {
+					account = acct
+					break
+				}
+			}
+		}
+		if account != nil {
+			quser := connector.UserID(cmd[2])
+			account.Conn.Invite(quser, connector.RoomID(""))
+			quser_mxid, err := dbGetMxUser(account.Protocol, quser)
+			if err != nil {
+				ezbrSystemSendf(mxid, "%s", err)
+				return
+			}
+			_, err = dbGetMxPmRoom(account.Protocol, quser, quser_mxid, mxid, account.AccountName)
+			if err != nil {
+				ezbrSystemSendf(mxid, "%s", err)
 			}
+		} else {
+			ezbrSystemSendf(mxid, "No account with name or using protocol %s", cmd[1])
 		}
+	default:
+		ezbrSystemSend(mxid, "Unrecognized command. Type `help` if you need some help!")
 	}
 }