* DMs done!

back/volume/src/chat/chat.controller.ts

@@ -228,7 +228,8 @@ export class ChatController {
     }
     const dms = channels.filter((channel: Channel) => {
       return (
-        channel.name === (user.username + '&' + other.username) &&
+        (channel.name === (user.username + '&' + other.username) ||
+          channel.name === (other.username + '&' + user.username)) &&
         channel.isPrivate &&
         (channel.password === undefined || channel.password === '')
       )

back/volume/src/chat/chat.service.ts

@@ -36,6 +36,20 @@ export class ChatService {
       if (otherUser.id === user.id) {
         throw new BadRequestException('Cannot DM yourself')
       }
+
+      const channels = await this.getChannelsForUser(user.id)
+      const dmAlreadyExists = channels.find((channel: Channel) => {
+        return (
+          (channel.name === (user.username + '&' + otherUser.username) ||
+            channel.name === (otherUser.username + '&' + user.username)) &&
+          channel.isPrivate &&
+          (channel.password === undefined || channel.password === '')
+        )
+      })
+      if (dmAlreadyExists !== undefined) {
+        throw new BadRequestException('DM already exists')
+      }
+
       newChannel = this.createDM(user, otherUser)
     } else {
       newChannel = new Channel()

front/volume/src/App.svelte

@@ -34,10 +34,36 @@
   // Single Page Application config
   let appState: string = APPSTATE.HOME;
 
+  function updateChat() {
+    const urlSplit = appState.split("#", 2)
+    if (urlSplit && urlSplit.length > 1) {
+      console.log(urlSplit[1])
+    }
+    if (appState.includes(APPSTATE.CHANNELS) && urlSplit.length > 1) {
+      const currentChannelName = appState.split("#", 2)[1];
+      fetch(API_URL + "/channels", {
+        credentials: "include",
+        mode: "cors",
+      }).then((res) => {
+        res.json().then((channels) => {
+          const channel = channels.find((c: ChannelsType) => c.name === currentChannelName);
+          if (channel) {
+            chan.selectChat(channel.id);
+          } else {
+            alert("Failed loading channel");
+          }
+        });
+      }).catch(() => {
+        alert("Failed loading channel");
+      });
+    }
+  }
+
   history.replaceState({ appState: "" }, "", "/");
   window.onpopstate = (e: PopStateEvent) => {
     if (e.state) {
       appState = e.state.appState;
+      updateChat();
     }
   };
 
@@ -49,6 +75,7 @@
     if (newState === appState) return;
     appState = newState;
     history.pushState({ appState }, "", appState);
+    updateChat();
   }
 
   onMount(() => {
@@ -68,21 +95,26 @@
     setAppState(APPSTATE.PROFILE_ID);
   }
 
-  let chan: Channels;
-  async function openDirectChat(event: CustomEvent<string>) {
-    const DMUsername = "test";
-    let DMChannel: Array<ChannelsType> = [];
-    const res = await fetch(API_URL + "/channels/dms/" + DMUsername, {
+  async function getDMs(username: string): Promise<Response> {
+    const response = await fetch(API_URL + "/channels/dms/" + username, {
       credentials: "include",
       mode: "cors",
     });
+    return response;
+  }
+
+  let chan: Channels;
+  async function openDirectChat(event: CustomEvent<string>) {
+    const DMUsername = event.detail;
+    let DMChannel: Array<ChannelsType> = [];
+    const res = await getDMs($store.username)
     if (res.ok) {
       DMChannel = await res.json();
       if (DMChannel.length != 0) {
         chan.selectChat(DMChannel[0].id);
       } else {
         console.log("Creating DMChannel: " + $store.username + "&" + DMUsername)
-        const response = await fetch(API_URL + "/channels", {
+        fetch(API_URL + "/channels", {
           credentials: "include",
           method: "POST",
           mode: "cors",
@@ -97,25 +129,24 @@
             isDM: true,
             otherDMedUsername: DMUsername
           }),
-        });
+        }).then(async () => {
+          const response = await getDMs($store.username)
           if (response.ok) {
-          const res = await fetch(API_URL + "/channels/dms/" + DMUsername, {
-            credentials: "include",
-            mode: "cors",
-          });
-          if (res.ok) {
-              DMChannel = await res.json(); 
+              DMChannel = await response.json(); 
               if (DMChannel.length != 0) {
-                console.log("Found DMChannel: ", DMChannel);
                 chan.selectChat(DMChannel[0].id);
               } else {
-                alert("Error creating 1 DM");
+                alert("Error creating DM");
               }
           } else {
-            alert("Error creating 2 DM");
-          }
+            alert("Error creating DM");
           }
+        }).catch((error) => {
+          alert(error.message);
+        })
       }
+    } else {
+      alert("Error creating DM");
     }
   }
 
@@ -182,7 +213,6 @@
       {clickLeaderboard}
     />
     {#if appState.includes(APPSTATE.CHANNELS)}
-      <!-- {#if appState.replace(APPSTATE.CHANNELS, "") !== ""} -->
       <div
         class="{appState.replace(APPSTATE.CHANNELS, "") === "" ? 'hidden' : ''}"
         on:click={() => setAppState(APPSTATE.CHANNELS)}
@@ -196,7 +226,6 @@
           on:send-message={openDirectChat}
         />
       </div>
-      <!-- {:else} -->
       <div
         class="{appState.replace(APPSTATE.CHANNELS, "") !== "" ? 'hidden' : ''}"
         on:click={resetAppState}
@@ -204,7 +233,6 @@
       >
         <Channels bind:this={chan} onSelectChannel={handleSelectChannel} />
       </div>
-      <!-- {/if} -->
     {/if}
     {#if appState === APPSTATE.LEADERBOARD}
       <div on:click={resetAppState} on:keydown={resetAppState}>