expire labelbuffer state

Author: topboy

src/libs/state.js

@@ -72,7 +72,42 @@ function createNewState() {
     ];
 
     const availableStartups = Object.create(null);
-
+    function getLabeledBuffer(state, b, message) {
+        const label = message.tags.label;
+        let buffer = b;
+        if (label !== undefined) {
+            state.labelBuffer ??= {};
+            if (!state.labelBuffer?.[label]) {
+                state.labelTimestamps ??= [];
+                const timestamp = Date.now();
+                state.labelBuffer[label] = buffer;
+                state.labelTimestamps.push({ label, timestamp });
+                let i = 0;
+                for (; i < state.labelTimestamps.length; i++) {
+                    const entry = state.labelTimestamps[i];
+                    if (entry.timestamp > timestamp - (1000 * 60)) {
+                        break;
+                    }
+                }
+                window.kiwi.log.debug(
+                    'removing entries:',
+                    i,
+                    { ...state.labelBuffer },
+                    state.labelTimestamps.slice()
+                );
+                if (i > 0) {
+                    const entriesToRemove = state.labelTimestamps
+                        .splice(0, i);
+                    entriesToRemove.forEach((e) => {
+                        delete state.labelBuffer[e.label];
+                    });
+                }
+            } else {
+                buffer = state.labelBuffer[label];
+            }
+        }
+        return buffer;
+    }
     const oldState = {
         data: stateObj,
         methods: {
@@ -582,19 +617,10 @@ function createNewState() {
             addMessage(b, message) {
                 // Some messages try to be added after a network has been removed, meaning no buffer
                 // will be available
-                let buffer = b;
+                let buffer = getLabeledBuffer(this, b, message);
                 if (!buffer || !buffer.getNetwork()) {
                     return;
                 }
-                const label = message.tags.label;
-                if (label !== undefined) {
-                    this.labelBuffer ??= {};
-                    if (!this.labelBuffer[label]) {
-                        this.labelBuffer[label] = buffer;
-                    } else {
-                        buffer = this.labelBuffer[label];
-                    }
-                }
                 let user = this.getUser(buffer.networkid, message.nick);
                 let bufferMessage = new Message(message, user);
                 if (user && user.ignore) {