Make channels unencrypted

Also, show info about older messages being deleted in rooms with message retention set.

src/components/Chat.vue

@@ -54,6 +54,9 @@
 
       <component :is="roomWelcomeHeader" v-on:close="closeRoomWelcomeHeader"></component>
 
+      <!-- If we have a retention timer, it means we have active message retention. Show header. -->
+      <WelcomeHeaderChannelUser v-if="retentionTimer && !roomWelcomeHeader" />
+
       <div v-for="(event, index) in filteredEvents" :key="event.getId()" :eventId="event.getId()">
         <!-- DAY Marker, shown for every new day in the timeline -->
         <div v-if="showDayMarkerBeforeEvent(event) && !!componentForEvent(event, isForExport = false)" class="day-marker"><div class="line"></div><div class="text">{{ dayForEvent(event) }}</div><div class="line"></div></div>
@@ -346,6 +349,7 @@ import RoomInfoBottomSheet from "./RoomInfoBottomSheet";
 import WelcomeHeaderRoom from "./welcome_headers/WelcomeHeaderRoom";
 import WelcomeHeaderDirectChat from "./welcome_headers/WelcomeHeaderDirectChat";
 import WelcomeHeaderChannel from "./welcome_headers/WelcomeHeaderChannel";
+import WelcomeHeaderChannelUser from "./welcome_headers/WelcomeHeaderChannelUser";
 import NoHistoryRoomWelcomeHeader from "./NoHistoryRoomWelcomeHeader.vue";
 import MessageOperationsBottomSheet from "./MessageOperationsBottomSheet";
 import StickerPickerBottomSheet from "./StickerPickerBottomSheet";
@@ -413,6 +417,7 @@ export default {
     FileDropLayout,
     UserProfileDialog,
     PurgeRoomDialog,
+    WelcomeHeaderChannelUser
   },
 
   data() {

src/components/CreateChannel.vue

@@ -145,18 +145,18 @@ export default {
         preset: "public_chat",
         initial_state:
           [
-            {
-              type: "m.room.encryption",
-              state_key: "",
-              content: {
-                algorithm: "m.megolm.v1.aes-sha2",
-              },
-            },
+            // {
+            //   type: "m.room.encryption",
+            //   state_key: "",
+            //   content: {
+            //     algorithm: "m.megolm.v1.aes-sha2",
+            //   },
+            // },
             {
               type: "m.room.history_visibility",
               state_key: "",
               content: {
-                history_visibility: "joined"
+                history_visibility: "shared"
               }
             },
             {

src/components/welcome_headers/WelcomeHeaderChannelUser.vue

@@ -0,0 +1,37 @@
+<template>
+  <div class="created-room-welcome-header">
+    <div class="mt-2" v-if="roomMessageRetention() > 0">
+      <i18n path="room_welcome.info_retention_user" tag="span">
+        <template v-slot:time>
+          <b>{{ messageRetentionDisplay }}</b>
+        </template>
+      </i18n>
+    </div>
+  </div>
+</template>
+
+<script>
+import roomInfoMixin from "../roomInfoMixin";
+
+export default {
+  name: "WelcomeHeaderChannelUser",
+  mixins: [roomInfoMixin],
+  components: {
+  },
+  computed: {
+  },
+  data() {
+    return {
+    }
+  },
+  methods: {
+    onMessageRetention(ignoredretention) {
+      this.updateMessageRetention();
+    },
+  }
+};
+</script>
+
+<style lang="scss">
+@import "@/assets/css/chat.scss";
+</style>