From 3b9c5c0a27aa7bdbc3fe8a2dbbe74ea4ef9ae9af Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Fri, 20 Dec 2019 21:32:11 +0100
Subject: [PATCH] remove unused code

---
 src/utils/KeyVerificationStateObserver.js | 148 ----------------------
 1 file changed, 148 deletions(-)

diff --git a/src/utils/KeyVerificationStateObserver.js b/src/utils/KeyVerificationStateObserver.js
index 7e33c29214..ef69a6b2f0 100644
--- a/src/utils/KeyVerificationStateObserver.js
+++ b/src/utils/KeyVerificationStateObserver.js
@@ -17,154 +17,6 @@ limitations under the License.
 import MatrixClientPeg from '../MatrixClientPeg';
 import { _t } from '../languageHandler';
 
-const SUB_EVENT_TYPES_OF_INTEREST = ["start", "cancel", "done"];
-
-export default class KeyVerificationStateObserver {
-    constructor(requestEvent, client, updateCallback) {
-        this._requestEvent = requestEvent;
-        this._client = client;
-        this._updateCallback = updateCallback;
-        this.accepted = false;
-        this.done = false;
-        this.cancelled = false;
-        this._updateVerificationState();
-    }
-
-    get concluded() {
-        return this.accepted || this.done || this.cancelled;
-    }
-
-    get pending() {
-        return !this.concluded;
-    }
-
-    setCallback(callback) {
-        this._updateCallback = callback;
-    }
-
-    attach() {
-        this._requestEvent.on("Event.relationsCreated", this._onRelationsCreated);
-        for (const phaseName of SUB_EVENT_TYPES_OF_INTEREST) {
-            this._tryListenOnRelationsForType(`m.key.verification.${phaseName}`);
-        }
-    }
-
-    detach() {
-        const roomId = this._requestEvent.getRoomId();
-        const room = this._client.getRoom(roomId);
-
-        for (const phaseName of SUB_EVENT_TYPES_OF_INTEREST) {
-            const relations = room.getUnfilteredTimelineSet()
-                .getRelationsForEvent(this._requestEvent.getId(), "m.reference", `m.key.verification.${phaseName}`);
-            if (relations) {
-                relations.removeListener("Relations.add", this._onRelationsUpdated);
-                relations.removeListener("Relations.remove", this._onRelationsUpdated);
-                relations.removeListener("Relations.redaction", this._onRelationsUpdated);
-            }
-        }
-        this._requestEvent.removeListener("Event.relationsCreated", this._onRelationsCreated);
-    }
-
-    _onRelationsCreated = (relationType, eventType) => {
-        if (relationType !== "m.reference") {
-            return;
-        }
-        if (
-            eventType !== "m.key.verification.start" &&
-            eventType !== "m.key.verification.cancel" &&
-            eventType !== "m.key.verification.done"
-        ) {
-            return;
-        }
-        this._tryListenOnRelationsForType(eventType);
-        this._updateVerificationState();
-        this._updateCallback();
-    };
-
-    _tryListenOnRelationsForType(eventType) {
-        const roomId = this._requestEvent.getRoomId();
-        const room = this._client.getRoom(roomId);
-        const relations = room.getUnfilteredTimelineSet()
-            .getRelationsForEvent(this._requestEvent.getId(), "m.reference", eventType);
-        if (relations) {
-            relations.on("Relations.add", this._onRelationsUpdated);
-            relations.on("Relations.remove", this._onRelationsUpdated);
-            relations.on("Relations.redaction", this._onRelationsUpdated);
-        }
-    }
-
-    _onRelationsUpdated = (event) => {
-        this._updateVerificationState();
-        this._updateCallback && this._updateCallback();
-    };
-
-    _updateVerificationState() {
-        const roomId = this._requestEvent.getRoomId();
-        const room = this._client.getRoom(roomId);
-        const timelineSet = room.getUnfilteredTimelineSet();
-        const fromUserId = this._requestEvent.getSender();
-        const content = this._requestEvent.getContent();
-        const toUserId = content.to;
-
-        this.cancelled = false;
-        this.done = false;
-        this.accepted = false;
-        this.otherPartyUserId = null;
-        this.cancelPartyUserId = null;
-
-        const startRelations = timelineSet.getRelationsForEvent(
-            this._requestEvent.getId(), "m.reference", "m.key.verification.start");
-        if (startRelations) {
-            for (const startEvent of startRelations.getRelations()) {
-                if (startEvent.getSender() === toUserId) {
-                    this.accepted = true;
-                }
-            }
-        }
-
-        const doneRelations = timelineSet.getRelationsForEvent(
-            this._requestEvent.getId(), "m.reference", "m.key.verification.done");
-        if (doneRelations) {
-            let senderDone = false;
-            let receiverDone = false;
-            for (const doneEvent of doneRelations.getRelations()) {
-                if (doneEvent.getSender() === toUserId) {
-                    receiverDone = true;
-                } else if (doneEvent.getSender() === fromUserId) {
-                    senderDone = true;
-                }
-            }
-            if (senderDone && receiverDone) {
-                this.done = true;
-            }
-        }
-
-        if (!this.done) {
-            const cancelRelations = timelineSet.getRelationsForEvent(
-                this._requestEvent.getId(), "m.reference", "m.key.verification.cancel");
-
-            if (cancelRelations) {
-                let earliestCancelEvent;
-                for (const cancelEvent of cancelRelations.getRelations()) {
-                    // only accept cancellation from the users involved
-                    if (cancelEvent.getSender() === toUserId || cancelEvent.getSender() === fromUserId) {
-                        this.cancelled = true;
-                        if (!earliestCancelEvent || cancelEvent.getTs() < earliestCancelEvent.getTs()) {
-                            earliestCancelEvent = cancelEvent;
-                        }
-                    }
-                }
-                if (earliestCancelEvent) {
-                    this.cancelPartyUserId = earliestCancelEvent.getSender();
-                }
-            }
-        }
-
-        this.otherPartyUserId = fromUserId === this._client.getUserId() ? toUserId : fromUserId;
-        console.log("KeyVerificationStateObserver update for txnId", this._requestEvent.getId(), {accepted: this.accepted, cancelled: this.cancelled, done: this.done});
-    }
-}
-
 export function getNameForEventRoom(userId, mxEvent) {
     const roomId = mxEvent.getRoomId();
     const client = MatrixClientPeg.get();