first implementation of "communities" + visual improvements

frontend/src/components/ChannelView.svelte

@@ -11,7 +11,7 @@
 
 <style>
     .main-container {
-        background-color: var(--background-color-1);
+        background-color: var(--background-color-2);
         overflow: hidden;
         display: flex;
         flex-direction: column;

frontend/src/components/Message.svelte

@@ -43,7 +43,7 @@ import { overlayStore, OverlayType, setMessageInputEvent } from "../stores";
     }
 
     .message:hover, .message.pinged {
-        background-color: var(--background-color-2);
+        background-color: var(--background-color-3);
     }
 
     .message-content {

frontend/src/components/MessageInput.svelte

@@ -111,7 +111,7 @@
 
     .message-input {
         width: 100%;
-        background-color : var(--background-color-2);
+        background-color : var(--background-color-3);
         border: none;
         color: currentColor;
         border-radius: var(--radius-md);

frontend/src/components/Messages.svelte

@@ -81,7 +81,6 @@
         flex-grow: 0;
         overflow-y: auto;
         overflow-x: hidden;
-        background-color: var(--background-color-1);
         padding-top: var(--space-sm);
     }
 
@@ -106,7 +105,7 @@
         padding: 0;
         padding-left: var(--space-xs);
         padding-right: var(--space-xs);
-        background-color: var(--background-color-1);
+        background-color: var(--background-color-2);
         color: var(--foreground-color-2);
         font-size: 0.75em;
     }

frontend/src/components/PresenceSidebar.svelte

@@ -18,11 +18,18 @@
         font-weight: 700;
         font-size: var(--h6);
     }
+
+    .presence-sidebar {
+        min-width: 248px;
+        max-width: 248px;
+    }
 </style>
 
-<div class="sidebar-container" in:maybeFly="{{ duration: 175, easing: quadInOut, x: 10 }}" out:maybeFlyIf="{{ _condition: !smallViewport.value, duration: 175, easing: quadInOut, x: -10 }}">
+<div class="sidebar-container presence-sidebar" in:maybeFly="{{ duration: 175, easing: quadInOut, x: 10 }}" out:maybeFlyIf="{{ _condition: !smallViewport.value, duration: 175, easing: quadInOut, x: -10 }}">
-    <span class="online-label">ONLINE</span>
     <div class="sidebar">
+        <span class="online-label">ONLINE</span>
+
+        <div class="sidebar-buttons">
             {#each $presenceStore as entry (entry.user.id)}
                 <button class="sidebar-button">
                     <UserView size={28} user={entry.user}></UserView>
@@ -38,4 +45,5 @@
                 </button>
             {/if}
         </div>
+    </div>
 </div>

frontend/src/components/Sidebar.svelte

@@ -1,7 +1,9 @@
 <script>
     import { quadInOut } from "svelte/easing";
     import { maybeFly, maybeFlyIf } from "../animations";
-    import { channels, gatewayStatus, overlayStore, selectedChannel, showSidebar, smallViewport, userInfoStore, unreadStore, OverlayType } from "../stores";
+    import { avatarUrl } from "../storage";
+    import { channels, gatewayStatus, overlayStore, selectedChannel, showSidebar, smallViewport, userInfoStore, unreadStore, OverlayType, communities, selectedCommunity } from "../stores";
+    import AddCommunity from "./overlays/AddCommunity.svelte";
     import UserView from "./UserView.svelte";
 
     const selectChannel = (channel) => {
@@ -13,12 +15,89 @@
     }
 </script>
 
+<style>
+    .sidebar-channel-buttons {
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        flex-direction: row;
+        flex-shrink: 0;
+        margin-left: auto;
+    }
+
+    .communities {
+        display: flex;
+        flex-direction: column;
+        background-color: var(--background-color-0);
+    }
+
+    .communities .button {
+        flex-shrink: 0;
+        flex-grow: 0;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        background: var(--background-color-1);
+        padding: 0;
+        font-size: inherit;
+        border-radius: 50%;
+        contain: content;
+        width: 48px;
+        height: 48px;
+        margin: var(--space-sm);
+        margin-bottom: 0;
+        transition-duration: 200ms;
+        transition-property: border-radius;
+    }
+
+    .communities .button:hover, .communities .button.selected {
+        border-radius: 16px;
+    }
+
+    .communities .button span {
+        margin: 0.45em;
+    }
+
+    .communities .button img {
+        width: 100%;
+        height: 100%;
+    }
+</style>
+
 <div class="sidebar-container" in:maybeFly="{{ duration: 175, easing: quadInOut, x: -10 }}" out:maybeFlyIf="{{ _condition: !smallViewport.value, duration: 175, easing: quadInOut, x: -10 }}">
-    <div class="top-bar text-small text-bold">
+    <div class="communities">
-        <UserView size={28} user={$userInfoStore}></UserView>
+        <button class="button" on:click={() => selectedCommunity.clear()} class:selected={ $selectedCommunity.id === -1 }>
+            {#if $userInfoStore}
+                <img src={avatarUrl($userInfoStore.avatar, 64)} alt=" ">
+            {/if}
+        </button>
+        {#each $communities as community (community.id)}
+            <button class="button" on:click={() => $selectedCommunity = community} class:selected={ $selectedCommunity.id === community.id }>
+                {#if community && community.avatar}
+                    <img src={avatarUrl(community.avatar, 64)} alt=" ">
+                {:else}
+                    <span>{ community.name[0] || "" }</span>
+                {/if}
+            </button>
+        {/each}
+        <button class="button" on:click={() => overlayStore.push(OverlayType.AddCommunity)}>
+            <span class="material-icons-outlined">add</span>
+        </button>
+        <button class="button" on:click={() => overlayStore.push(OverlayType.Settings)}>
+            <span class="material-icons-outlined">settings</span>
+        </button>
     </div>
     <div class="sidebar">
+        <div class="top-bar text-small text-bold">
+            {#if $selectedCommunity.id !== -1}
+                {$selectedCommunity.name || ""}
+            {:else}
+                {$userInfoStore ? $userInfoStore.username || "" : ""}
+            {/if}
+        </div>
+        <div class="sidebar-buttons">
             {#each $channels as channel (channel.id)}
+                {#if ($selectedCommunity.id === -1 && channel.community_id === null) || ($selectedCommunity.id !== -1 && channel.community_id === $selectedCommunity.id)}
                     <button on:click="{ selectChannel(channel) }" class="sidebar-button" class:selected={ channel.id === $selectedChannel.id }>
                         <span class="material-icons-outlined">tag</span>
                         <span class="sidebar-button-text">{ channel.name }</span>
@@ -33,17 +112,14 @@
                             {/if}
                         </div>
                     </button>
+                {/if}
             {/each}
             {#if $userInfoStore && $userInfoStore.permissions.create_channel}
-            <button on:click="{ () => overlayStore.push(OverlayType.CreateChannel) }" class="sidebar-button">
+                <button on:click="{ () => overlayStore.push(OverlayType.CreateChannel, { community: selectedCommunity.value }) }" class="sidebar-button">
                     <span class="material-icons-outlined">add</span>
                     <span class="sidebar-button-text">Create Channel</span>
                 </button>
             {/if}
-        <button on:click="{ () => overlayStore.push(OverlayType.Settings) }" class="sidebar-button">
-            <span class="material-icons-outlined">settings</span>
-            <span class="sidebar-button-text">Settings</span>
-        </button>
         </div>
         {#if !$gatewayStatus.ready}
             <div class="top-bar darker">
@@ -51,15 +127,5 @@
                 <span class="h5 top-bar-heading">connecting...</span>
             </div>
         {/if}
+    </div>
 </div>
-
-<style>
-    .sidebar-channel-buttons {
-        display: flex;
-        justify-content: center;
-        align-items: center;
-        flex-direction: row;
-        flex-shrink: 0;
-        margin-left: auto;
-    }
-</style>

frontend/src/components/overlays/AddCommunity.svelte

@@ -0,0 +1,50 @@
+<script>
+    import { overlayStore } from "../../stores";
+    import { methods, remoteSignal } from "../../request";
+    import { maybeModalFade, maybeModalScale } from "../../animations";
+
+    let communityName = "";
+    let createButtonEnabled = true;
+    export let close = () => {};
+
+    const create = async () => {
+        createButtonEnabled = false;
+        const { ok } = await remoteSignal(methods.createCommunity, communityName);
+        if (!ok) {
+            overlayStore.toast("Couldn't create community");
+        }
+        close();
+    };
+    const onKeydown = async (e) => {
+        if (e.code !== "Enter")
+            return;
+
+        await create();
+    };
+</script>
+
+<style>
+    .full-width {
+        width: 100%;
+    }
+</style>
+
+<div class="modal-backdrop" transition:maybeModalFade on:click="{ close }" on:keydown="{ onKeydown }">
+    <div class="modal" transition:maybeModalScale on:click|stopPropagation>
+        <div class="modal-header">
+            <span class="h4">Create Community</span>
+        </div>
+
+        <div class="modal-content">
+            <label class="input-label">
+                Community Name
+                <input class="input full-width" minlength="1" maxlength="32" bind:value={ communityName } />
+            </label>
+        </div>
+
+        <div class="modal-footer">
+            <button class="button modal-secondary-action" on:click="{ close }">Cancel</button>
+            <button class="button button-accent modal-primary-action" on:click="{ create }" disabled="{ !createButtonEnabled }">Create</button>
+        </div>
+    </div>
+</div>

frontend/src/components/overlays/CreateChannel.svelte

@@ -6,10 +6,11 @@
     let channelName = "";
     let createButtonEnabled = true;
     export let close = () => {};
+    export let community = null;
 
     const create = async () => {
         createButtonEnabled = false;
-        const { ok } = await remoteSignal(methods.createChannel, channelName);
+        const { ok } = await remoteSignal(methods.createChannel, channelName, community.id !== -1 ? community.id : null);
         if (!ok) {
             overlayStore.toast("Couldn't create channel");
         }
@@ -33,6 +34,9 @@
     <div class="modal" transition:maybeModalScale on:click|stopPropagation>
         <div class="modal-header">
             <span class="h4">Create Channel</span>
+            {#if community.id !== -1}
+                <span class="text-fg-3 text-small">in <span class="text-fg-2">{ community.name }</span></span>
+            {/if}
         </div>
 
         <div class="modal-content">

frontend/src/components/overlays/OverlayProvider.svelte

@@ -10,6 +10,7 @@
     import Settings from "./Settings.svelte";
     import Prompt from "./Prompt.svelte";
     import UserInfo from "./UserInfo.svelte";
+    import AddCommunity from "./AddCommunity.svelte";
 
     const OverlayComponent = {
         0: CreateChannel,
@@ -21,6 +22,7 @@
         6: Settings,
         7: Prompt,
         8: UserInfo,
+        9: AddCommunity,
     };
 </script>
 

frontend/src/gateway.js

@@ -35,6 +35,10 @@ export const GatewayPayloadType = {
     PresenceUpdate: 140,
 
     UserUpdate: 150,
+
+    CommunityCreate: 160,
+    CommunityUpdate: 161,
+    CommunityDelete: 162,
 }
 
 export const GatewayEventType = {
@@ -59,6 +63,7 @@ export default {
     heartbeatInterval: null,
     user: null,
     channels: null,
+    communities: null,
     reconnectDelay: 400,
     reconnectTimeout: null,
     handlers: new Map(),
@@ -113,6 +118,7 @@ export default {
 
                     this.user = payload.d.user;
                     this.channels = payload.d.channels;
+                    this.communities = payload.d.communities;
                     this.authenticated = true;
                     this.reconnectDelay = 400;
 

frontend/src/request.js

@@ -5,23 +5,28 @@ const method = (methodId, requiresAuthentication) => ({methodId, requiresAuthent
 const withCacheable = (method) => ({ ...method, cacheable: true })
 
 export const methods = {
-    // methodName: [ methodId, requiresAuthentication ]
+    createUser: method(100, false),
-    createUser: method(0, false),
+    loginUser: method(101, false),
-    loginUser: method(1, false),
+    getUserSelf: withCacheable(method(102, true)),
-    getUserSelf: withCacheable(method(2, true)),
+    promoteUserSelf: method(103, true),
-    promoteUserSelf: method(3, true),
+    putUserAvatar: method(104, true),
-    putUserAvatar: method(4, true),
+    createChannel: method(200, true),
-    createChannel: method(5, true),
+    updateChannelName: method(201, true),
-    updateChannelName: method(6, true),
+    deleteChannel: method(202, true),
-    deleteChannel: method(7, true),
+    getChannel: withCacheable(method(203, true)),
-    getChannel: withCacheable(method(8, true)),
+    getChannels: withCacheable(method(204, true)),
-    getChannels: withCacheable(method(9, true)),
+    createChannelMessage: method(205, true),
-    createChannelMessage: method(10, true),
+    getChannelMessages: withCacheable(method(206, true)),
-    getChannelMessages: withCacheable(method(11, true)),
+    putChannelTyping: method(207, true),
-    putChannelTyping: method(12, true),
+    deleteMessage: method(300, true),
-    deleteMessage: method(13, true),
+    updateMessageContent: method(301, true),
-    updateMessageContent: method(14, true),
+    getMessage: withCacheable(method(302, true)),
-    getMessage: withCacheable(method(15, true))
+    createCommunity: method(400, true),
+    updateCommunityName: method(401, true),
+    deleteCommunity: method(402, true),
+    getCommunity: withCacheable(method(403, true)),
+    getCommunities: withCacheable(method(404, true)),
+    getCommunityChannels: withCacheable(method(405, true)),
 };
 
 export function compatibleFetch(endpoint, options) {

frontend/src/storage.js

@@ -5,12 +5,13 @@ const defaults = {
     "auth:token": "",
     "ui:doAnimations": true,
     "ui:theme": "dark",
-    "state:openChannelId": -1,
+    "state:openCommunityId": -1,
+    "state:selectedChannels": {},
     "log:Gateway": false,
     "log:Store": false,
     "log:Messages": false,
     "log:Timeline": false,
-    "ui:stateful:presistSelectedChannel": true,
+    "ui:stateful:presistSelection": true,
     "ui:showSidebarToggle": false,
     "ui:alwaysUseMobileChatBar": false,
     "ui:online:processRemoteTypingEvents": true,

frontend/src/stores.js

@@ -139,21 +139,6 @@ class ChannelsStore extends Store {
 
         gateway.subscribe(GatewayEventType.Ready, ({ channels }) => {
             this.value = channels;
-            if (getItem("ui:stateful:presistSelectedChannel")) {
-                selectedChannel.value.id = getItem("state:openChannelId");
-            }
-            if (channels.length >= 1) {
-                if (!selectedChannel.value || selectedChannel.value.id === -1) {
-                    selectedChannel.set(channels[0]);
-                } else {
-                    // if a channel id is already selected, we'll populate it with the data we just got from the gateway
-                    const index = this.value.findIndex(e => e.id === selectedChannel.value.id);
-                    if (index !== -1)
-                        selectedChannel.set(this.value[index]);
-                    else // if the channel doesn't exist, just select the first one
-                        selectedChannel.set(channels[0]);
-                }
-            }
             this.updated();
         });
         gateway.subscribe(GatewayEventType.ChannelCreate, (channel) => {
@@ -414,7 +399,8 @@ export const OverlayType = {
     EditMessage: 5,
     Settings: 6,
     Prompt: 7,
-    UserInfo: 8
+    UserInfo: 8,
+    AddCommunity: 9
 };
 class OverlayStore extends Store {
     constructor() {
@@ -672,7 +658,161 @@ class PluginStore extends Store {
     }
 }
 
-export const selectedChannel = new Store({ id: -1, name: "none", creator_id: -1 }, "selectedChannel");
+class CommunitiesStore extends Store {
+    constructor() {
+        super(gateway.communities || [], "CommunitiesStore");
+
+        gateway.subscribe(GatewayEventType.Ready, ({ communities }) => {
+            this.value = communities;
+            this.updated();
+        });
+        gateway.subscribe(GatewayEventType.CommunityCreate, (community) => {
+            this.value.push(community);
+            this.updated();
+        });
+        gateway.subscribe(GatewayEventType.CommunityDelete, ({ id }) => {
+            const index = this.value.findIndex(e => e.id === id);
+            if (index === -1)
+                return;
+
+            this.value.splice(index, 1);
+            this.updated();
+        });
+        gateway.subscribe(GatewayEventType.CommunityUpdate, (data) => {
+            const index = this.value.findIndex(e => e.id === data.id);
+            if (index === -1)
+                return;
+            if (!this.value[index])
+                return;
+
+            this.value[index] = data;
+            this.updated();
+        });
+    }
+}
+
+const noneChannel = {id: -1, name: "none", creator_id: -1}
+class SelectedChannelStore extends Store {
+    constructor() {
+        super(noneChannel, "SelectedChannelStore");
+
+        this.communityIdToSelectedChannel = new Map();
+
+        selectedCommunity.subscribe((community) => {
+            this.value = this.communityIdToSelectedChannel.get(community.id) || noneChannel;
+            this.updated();
+        });
+
+        gateway.subscribe(GatewayEventType.Ready, ({ channels }) => {
+            this.communityIdToSelectedChannel.clear();
+            const savedMap = getItem("state:selectedChannels");
+            for (const [communityId, channelId] of Object.entries(savedMap)) {
+                const channel = channels.find(c => c.id === channelId);
+                if (channel) {
+                    this.communityIdToSelectedChannel.set(parseInt(communityId), channel);
+                }
+            }
+            console.log(this.communityIdToSelectedChannel);
+            this.value = this.communityIdToSelectedChannel.get(selectedCommunity.value.id) || noneChannel;
+            this.updateSavedMap();
+            this.updated();
+        });
+        gateway.subscribe(GatewayEventType.CommunityDelete, ({ id }) => {
+            if (this.communityIdToSelectedChannel.delete(id) && this.value && this.value.id === id) {
+                this.value = noneChannel;
+                this.updateSavedMap();
+                this.updated();
+            }
+        });
+        gateway.subscribe(GatewayEventType.ChannelDelete, ({ id }) => {
+            this.communityIdToSelectedChannel.forEach((channel, communityId) => {
+                if (channel.id === id) {
+                    if (this.communityIdToSelectedChannel.delete(communityId) && this.value && this.value.id === id) {
+                        this.value = noneChannel;
+                        this.updateSavedMap();
+                        this.updated();
+                        return;
+                    }
+                }
+            });
+        });
+        gateway.subscribe(GatewayEventType.ChannelUpdate, (data) => {
+            if (this.value && this.value.id === data.id) {
+                this.value = data;
+                this.communityIdToSelectedChannel.set(selectedCommunity.value.id, data);
+                this.updateSavedMap();
+                this.updated();
+            }
+        });
+    }
+
+    updateSavedMap() {
+        if (getItem("ui:stateful:presistSelection")) {
+            const value = {};
+            this.communityIdToSelectedChannel.forEach((channel, communityId) => {
+                if (!channel || channel.id === -1) return;
+                value[communityId] = channel.id;
+            });
+            setItem("state:selectedChannels", value);
+        }
+    }
+
+    set(value) {
+        if (value === this.value)
+            return;
+
+        this.value = value;
+        this.communityIdToSelectedChannel.set(selectedCommunity.value.id, value);
+        this.updateSavedMap();
+        this.updated();
+    }
+}
+
+class SelectedCommunityStore extends Store {
+    constructor() {
+        super({ id: -1, name: "none", creator_id: -1, created_at: 0, avatar: null }, "SelectedCommunityStore");
+
+        gateway.subscribe(GatewayEventType.Ready, ({ communities }) => {
+            if (getItem("ui:stateful:presistSelection")) {
+                this.value.id = getItem("state:openCommunityId");
+            }
+            if (communities.length > 0 && this.value.id !== -1) {
+                const index = communities.findIndex(e => e.id === this.value.id);
+                if (index !== -1) {
+                    this.set(communities[index]);
+                }
+            }
+        });
+
+        gateway.subscribe(GatewayEventType.CommunityDelete, ({ id }) => {
+            if (this.value.id === id) {
+                this.clear();
+            }
+        });
+
+        gateway.subscribe(GatewayEventType.CommunityUpdate, (data) => {
+            if (data.id === this.value.id) {
+                this.value = data;
+                this.updated();
+            }
+        });
+
+        this.on(value => {
+            if (getItem("ui:stateful:presistSelection")) {
+                setItem("state:openCommunityId", value.id);
+            }
+        });
+    }
+
+    clear() {
+        this.value = { id: -1, name: "none", creator_id: -1, created_at: 0, avatar: null };
+        this.updated();
+    }
+}
+
+
+export const selectedCommunity = new SelectedCommunityStore();
+export const selectedChannel = new SelectedChannelStore();
 export const showSidebar = new Store(true, "showSidebar");
 export const showPresenceSidebar = new Store(false, "showPresenceSidebar");
 export const smallViewport = new Store(false, "smallViewport");
@@ -680,6 +820,7 @@ export const showChannelView = new Store(true, "showChannelView");
 export const theme = new StorageItemStore("ui:theme");
 export const doAnimations = new StorageItemStore("ui:doAnimations");
 export const channels = new ChannelsStore();
+export const communities = new CommunitiesStore();
 export const gatewayStatus = new GatewayStatusStore();
 export const messagesStoreProvider = new MessagesStoreProvider();
 export const userInfoStore = new UserInfoStore();
@@ -741,12 +882,6 @@ export const allStores = {
     sendMessageAction,
 };
 
-selectedChannel.on((newSelectedChannel) => {
-    if (getItem("ui:stateful:presistSelectedChannel")) {
-        setItem("state:openChannelId", newSelectedChannel.id);
-    }
-});
-
 unreadStore.subscribe(() => {
     let totalUnreads = 0;
     unreadStore.value.forEach(count => totalUnreads += count);

frontend/src/styles/global.css

@@ -34,11 +34,10 @@
 /* top-level */
 
 :root {
-	--background-color-0: hsl(180, 11%, 4%);
+	--background-color-0: #151515;
-	--background-color-1: hsl(180, 11%, 5%);
+	--background-color-1: #1a1a1a;
-	--background-color-2: hsl(180, 11%, 8%);
+	--background-color-2: #202020;
-	--background-color-3: hsl(180, 11%, 11%);
+	--background-color-3: #262626;
-	--background-color-4: hsl(180, 11%, 15%);
 	--foreground-color-1: hsl(210, 100%, 100%);
 	--foreground-color-2: hsl(63, 10%, 82%);
 	--foreground-color-3: hsl(63, 2%, 60%);
@@ -144,6 +143,7 @@ body {
 	width: 100%;
 	padding: var(--space-sm);
 	height: 56px;
+	flex-shrink: 0;
 }
 
 .top-bar-heading {
@@ -413,16 +413,22 @@ body {
 .h5 {font-size: var(--h5)}
 .text-small {font-size: var(--h6)}
 .text-bold {font-weight: 700}
+.text-fg-2 {
+	color: var(--foreground-color-2);
+}
+.text-fg-3 {
+	color: var(--foreground-color-3);
+}
 
 /* sidebar */
 
 .sidebar-container {
 	display: flex;
-	flex-direction: column;
+	flex-direction: row;
 	background-color: var(--background-color-0);
 	height: 100%;
-	min-width: 255px;
+	min-width: 320px;
-	max-width: 255px;
+	max-width: 320px;
 	contain: content;
 }
 
@@ -435,6 +441,13 @@ body {
 }
 
 .sidebar {
+	display: flex;
+	flex-direction: column;
+	flex-grow: 1;
+	background-color: var(--background-color-1);
+}
+
+.sidebar-buttons {
 	width: 100%;
 	height: 100%;
 	padding: var(--space-xs);
@@ -450,7 +463,7 @@ body {
 	align-items: center;
 	justify-content: left;
 	border: none;
-	background-color: var(--background-color-0);
+	background-color: var(--background-color-1);
 	padding: var(--space-xs);
 	margin-bottom: var(--space-xxs);
 	color: var(--foreground-special-color-1);

src/database/index.ts

@@ -18,6 +18,7 @@ export const query = function(text: string, params: any[] = [], rejectOnError =
                 if (rejectOnError) {
                     reject(error);
                 } else {
+                    console.error(error);
                     resolve(null);
                 }
             });

src/database/init.ts

@@ -27,10 +27,22 @@ export default async function databaseInit() {
             );
         `,
         `
-            ALTER TABLE messages ADD COLUMN nick_username VARCHAR(64) DEFAULT NULL;
+            ALTER TABLE messages ADD COLUMN IF NOT EXISTS nick_username VARCHAR(64) DEFAULT NULL;
         `,
         `
-            ALTER TABLE users ADD COLUMN avatar VARCHAR(48) DEFAULT NULL;
+            ALTER TABLE users ADD COLUMN IF NOT EXISTS avatar VARCHAR(48) DEFAULT NULL;
+        `,
+        `
+            CREATE TABLE IF NOT EXISTS communities(
+                id SERIAL PRIMARY KEY,
+                name VARCHAR(64) NOT NULL,
+                owner_id SERIAL REFERENCES users ON DELETE CASCADE,
+                avatar VARCHAR(48) DEFAULT NULL,
+                created_at BIGINT
+            );
+        `,
+        `
+            ALTER TABLE channels ADD COLUMN IF NOT EXISTS community_id INT NULL REFERENCES communities(id) ON DELETE CASCADE;
         `
     ];
 

src/gateway/gatewaypayloadtype.ts

@@ -20,6 +20,10 @@ export enum GatewayPayloadType {
     PresenceUpdate = 140,
 
     UserUpdate = 150,
+
+    CommunityCreate = 160,
+    CommunityUpdate,
+    CommunityDelete,
 }
 
 export enum GatewayPresenceStatus {

src/gateway/index.ts

@@ -381,23 +381,30 @@ export default function(server: Server) {
                         if ((sessions.length + 1) > MAX_GATEWAY_SESSIONS_PER_USER) {
                             return closeWithError(ws, gatewayErrors.TOO_MANY_SESSIONS);
                         }
-                    } else {
+                    }
+
+                    // TODO: each user should have their own list of channels that they join
+                    const [channels, communities] = await Promise.all([
+                        query("SELECT id, name, owner_id, community_id FROM channels ORDER BY id ASC"),
+                        query("SELECT id, name, owner_id, avatar, created_at FROM communities ORDER BY id ASC"),
+                    ]);
+                    if (!channels || !communities) {
+                        return closeWithError(ws, gatewayErrors.GOT_NO_DATABASE_DATA);
+                    }
+
+                    if (!sessions) {
                         sessions = [];
                         sessionsByUserId.set(user.id, sessions);
                     }
                     sessions.push(ws);
 
-                    // TODO: each user should have their own list of channels that they join
-                    const channels = await query("SELECT id, name, owner_id FROM channels ORDER BY id ASC");
-
-                    if (!channels) {
-                        return closeWithError(ws, gatewayErrors.GOT_NO_DATABASE_DATA);
-                    }
-
                     clientSubscribe(ws, "*");
-                    channels.rows.forEach(c => {
+                    for (let i = 0; i < channels.rows.length; i++) {
-                        clientSubscribe(ws, `channel:${c.id}`);
+                        clientSubscribe(ws, `channel:${channels.rows[i].id}`);
-                    });
+                    }
+                    for (let i = 0; i < communities.rows.length; i++) {
+                        clientSubscribe(ws, `community:${communities.rows[i].id}`);
+                    }
 
                     ws.state.user = user;
                     ws.state.bridgesTo = authData.bridgesTo;
@@ -419,6 +426,7 @@ export default function(server: Server) {
                         d: {
                             user: getPublicUserObject(ws.state.user),
                             channels: channels.rows,
+                            communities: communities.rows,
                             presence: getInitialPresenceEntries()
                         }
                     });

src/rpc/apis/channels.ts

@@ -10,13 +10,13 @@ import serverConfig from "../../serverconfig";
 
 method(
     "createChannel",
-    [withRegexp(channelNameRegex, string(1, 32))],
+    [withRegexp(channelNameRegex, string(1, 32)), withOptional(uint())],
-    async (user: User, name: string) => {
+    async (user: User, name: string, communityId: number | null) => {
         if (serverConfig.superuserRequirement.createChannel && !user.is_superuser) {
             return errors.FORBIDDEN_DUE_TO_MISSING_PERMISSIONS;
         }
 
-        const result = await query("INSERT INTO channels(name, owner_id) VALUES ($1, $2) RETURNING id, name, owner_id", [name, user.id]);
+        const result = await query("INSERT INTO channels(name, owner_id, community_id) VALUES ($1, $2, $3) RETURNING id, name, owner_id, community_id", [name, user.id, communityId]);
         if (!result || result.rowCount < 1) {
             return errors.GOT_NO_DATABASE_DATA;
         }
@@ -46,23 +46,17 @@ method(
             return errors.FORBIDDEN_DUE_TO_MISSING_PERMISSIONS;
         }
 
-        const result = await query("UPDATE channels SET name = $1 WHERE id = $2", [name, id]);
+        const result = await query("UPDATE channels SET name = $1 WHERE id = $2 RETURNING id, name, owner_id, community_id", [name, id]);
         if (!result || result.rowCount < 1) {
             return errors.GOT_NO_DATABASE_DATA;
         }
 
-        const updatePayload = {
-            id,
-            name,
-            owner_id: permissionCheckResult.rows[0].owner_id
-        };
-
         dispatch(`channel:${id}`, {
             t: GatewayPayloadType.ChannelUpdate,
-            d: updatePayload
+            d: result.rows[0]
         });
 
-        return updatePayload;
+        return result.rows[0];
     }
 );
 
@@ -96,7 +90,7 @@ method(
     "getChannel",
     [uint()],
     async (_user: User, id: number) => {
-        const result = await query("SELECT id, name, owner_id FROM channels WHERE id = $1", [id]);
+        const result = await query("SELECT id, name, owner_id, community_id FROM channels WHERE id = $1", [id]);
         if (!result || result.rowCount < 1) {
             return errors.NOT_FOUND;
         }
@@ -109,7 +103,7 @@ method(
     "getChannels",
     [],
     async (_user: User) => {
-        const result = await query("SELECT id, name, owner_id FROM channels");
+        const result = await query("SELECT id, name, owner_id, community_id FROM channels");
 
         return (result && result.rows) ? result.rows : [];
     }

src/rpc/apis/communities.ts

@@ -0,0 +1,114 @@
+import { channelNameRegex, method, int, string, uint, withRegexp } from "../rpc";
+import { query } from "../../database";
+import { errors } from "../../errors";
+import { dispatch, dispatchChannelSubscribe } from "../../gateway";
+import { GatewayPayloadType } from "../../gateway/gatewaypayloadtype";
+import serverConfig from "../../serverconfig";
+
+method(
+    "createCommunity",
+    [withRegexp(channelNameRegex, string(1, 64))],
+    async (user: User, name: string) => {
+        if (serverConfig.superuserRequirement.createChannel && !user.is_superuser) {
+            return errors.FORBIDDEN_DUE_TO_MISSING_PERMISSIONS;
+        }
+        const result = await query("INSERT INTO communities(name, owner_id, created_at) VALUES ($1, $2, $3) RETURNING id, name, owner_id, avatar, created_at", [name, user.id, Date.now().toString()]);
+        if (!result || result.rowCount < 1) {
+            return errors.GOT_NO_DATABASE_DATA;
+        }
+
+        dispatch("*", {
+            t: GatewayPayloadType.CommunityCreate,
+            d: result.rows[0]
+        });
+
+        dispatchChannelSubscribe("*", `community:${result.rows[0].id}`);
+
+        return result.rows[0];
+    }
+);
+
+method(
+    "updateCommunityName",
+    [uint(), withRegexp(channelNameRegex, string(1, 32))],
+    async (user: User, id: number, name: string) => {
+        const permissionCheckResult = await query("SELECT owner_id FROM communities WHERE id = $1", [id]);
+        if (!permissionCheckResult || permissionCheckResult.rowCount < 1) {
+            return errors.NOT_FOUND;
+        }
+        if (permissionCheckResult.rows[0].owner_id !== user.id && !user.is_superuser) {
+            return errors.FORBIDDEN_DUE_TO_MISSING_PERMISSIONS;
+        }
+
+        const result = await query("UPDATE communities SET name = $1 WHERE id = $2 RETURNING id, name, owner_id, avatar, created_at", [name, id]);
+        if (!result || result.rowCount < 1) {
+            return errors.GOT_NO_DATABASE_DATA;
+        }
+
+        dispatch(`community:${id}`, {
+            t: GatewayPayloadType.CommunityUpdate,
+            d: result.rows[0]
+        });
+
+        return result.rows[0];
+    }
+);
+
+method(
+    "deleteCommunity",
+    [uint()],
+    async (user: User, id: number) => {
+        const permissionCheckResult = await query("SELECT owner_id FROM communities WHERE id = $1", [id]);
+        if (!permissionCheckResult || permissionCheckResult.rowCount < 1) {
+            return errors.NOT_FOUND;
+        }
+        if (permissionCheckResult.rows[0].owner_id !== user.id && !user.is_superuser) {
+            return errors.FORBIDDEN_DUE_TO_MISSING_PERMISSIONS;
+        }
+
+        const result = await query("DELETE FROM communities WHERE id = $1", [id]);
+        if (!result || result.rowCount < 1) {
+            return errors.GOT_NO_DATABASE_DATA;
+        }
+
+        dispatch(`community:${id}`, {
+            t: GatewayPayloadType.CommunityDelete,
+            d: {id}
+        });
+
+        return {id};
+    }
+);
+
+method(
+    "getCommunity",
+    [uint()],
+    async (_user: User, id: number) => {
+        const result = await query("SELECT id, name, owner_id, avatar, created_at FROM communities WHERE id = $1", [id]);
+        if (!result || result.rowCount < 1) {
+            return errors.NOT_FOUND;
+        }
+
+        return result.rows[0];
+    }
+);
+
+method(
+    "getCommunities",
+    [],
+    async (_user: User) => {
+        const result = await query("SELECT id, name, owner_id, avatar, created_at FROM communities");
+
+        return (result && result.rows) ? result.rows : [];
+    }
+);
+
+method(
+    "getCommunityChannels",
+    [uint()],
+    async (_user: User, id: number) => {
+        const result = await query("SELECT id, name, owner_id, community_id FROM channels WHERE community_id = $1", [id]);
+
+        return (result && result.rows) ? result.rows : [];
+    }
+);

src/rpc/index.ts

@@ -1,8 +1,14 @@
-import "./rpc";
+import { methodGroup, methodNameToId, methods } from "./rpc";
+
+methodGroup(100);
 import "./apis/users";
+methodGroup(200);
 import "./apis/channels";
+methodGroup(300);
 import "./apis/messages";
-import { methodNameToId, methods } from "./rpc";
+methodGroup(400);
+import "./apis/communities";
+
 
 console.log("--- begin rpc method map ---")
 const methodMap: any = Object.fromEntries(methodNameToId);

src/rpc/rpc.ts

@@ -49,6 +49,10 @@ export const methods: Map<number, RPCMethod> = new Map();
 export const methodNameToId: Map<string, number> = new Map();
 let lastMethodId = 0;
 
+export const methodGroup = (origin: number) => {
+    lastMethodId = origin;
+}
+
 export const method = (name: string, args: RPCArgument[], func: ((...args: any[]) => any), requiresAuthentication: boolean = true) => {
     let id = lastMethodId++;
     methodNameToId.set(name, id);

src/server.ts

@@ -4,7 +4,7 @@ import rpcRouter from "./routes/api/v1/rpc";
 import matrixRouter from "./routes/matrix";
 import { errors } from "./errors";
 
-const ENABLE_MATRIX_LAYER = false;
+const ENABLE_MATRIX_LAYER = true;
 
 export default function(app: Application) {
     app.use(json());