better/more comments and focus bugfix

js/commands.js

@@ -4,13 +4,15 @@ function runCommand(input) {
     if (input === "")
         return "";
 
-    // Exit current level
+    // Get current mode
     const modeSplit = chatMode.split(' ');
     if (modeSplit[0] !== "default") {
         const lowerIn = input.toLowerCase();
+        // Run exit command in other mode
         if (lowerIn.startsWith("exit")) {
             cmd_exit();
             return "";
+        // Run clear command in other modes
         } else if (lowerIn.startsWith("clear")) {
             cmd_clear();
             return "";
@@ -20,12 +22,16 @@ function runCommand(input) {
     // Handle different chat modes
     switch (modeSplit[0]) {
         case "msg":
+            // Send direct message, rename previous pretext to own name
             directMessage(modeSplit[1].split(','), input);
             renameToSelf();
+            // Return without message
             return "";
         case "chat":
+            // Send group message, rename previous pretext to own name
             groupMessage(modeSplit[1].split(','), input);
             renameToSelf();
+            // Return without message
             return "";
     }
 
@@ -88,24 +94,31 @@ function cmd_about() {
 // Reload page
 function cmd_reload() {
     window.location.reload();
+
+    // Return without message
+    return null;
 }
 
 // Clear terminal window
 function cmd_clear() {
     setTimeout(() => {
+        // Remove all children except core elements and banner
         const tbc = tbDiv.children;
         for (let i = tbc.length-3; i > 1; i--)
             tbDiv.removeChild(tbc[i]);
 
+        // Replace last child with new (current) pretext
         const prelink = document.createElement("a");
         prelink.innerHTML = pretext.current;
         tbDiv.replaceChild(prelink, tbc[1]);
 
+        // Reset cursor position
         cursorPosition = 0;
         cursorYOffset = 7;
-
         updateCursor();
     }, 50);
+
+    // Return without message
     return null;
 }
 
@@ -113,12 +126,15 @@ function cmd_clear() {
 function cmd_history() {
     let output = "";
 
+    // Get history
     const hl = history.list;
     for (let i = 0; i < hl.length; i++) {
+        // Add line break on every command except last
         const lineBreak = (i !== hl.length - 1) ? "<br>" : "";
         output += `${i+1} ${hl[i]}${lineBreak}`;
     }
 
+    // Return output list
     return output;
 }
 
@@ -159,8 +175,10 @@ function cmd_echo(input) {
 function cmd_nick(input) {
     if (input === undefined)
         return "No nickname was given!";
+    // Rename user
     if (!!window.localStorage.getItem("connected"))
         sendNickname(input[0]);
+    // Connect with given name
     else
         connect(input[0]);
     return null;

js/main.js

@@ -33,81 +33,83 @@ textIn.oninput = () => {
     textIn.value = "";
     updateCursor();
 };
+// Auto focus on start
 textIn.focus();
 
-// If no ranged selection was made, focus on input field
+// Key Listener
-document.addEventListener("selectionchange", e => {
-    if (e.target !== textIn) {
-        const selection = window.getSelection();
-        if (selection.type === "Caret")
-            textIn.focus();
-    }
-});
-
 document.addEventListener("keydown", e => {
     const text = textCur.textContent;
     switch (e.key) {
         case "Backspace":
-            // Ein Zeichen nach links löschen
+            // Delete one character to the left
             if (cursorPosition === 0)
                 return;
+            // Cursor is in the middle of the input
             if (cursorPosition <= textCur.textContent.length-1) {
                 const a = text.substring(0, cursorPosition-1);
                 const b = text.substring(cursorPosition, text.length);
                 textCur.textContent=a+b;
+            // Cursor is at the end of input
             } else
                 textCur.textContent = text.substring(0,text.length-1);
+            // Update cursor visuals
             cursorPosition--;
             updateCursor();
             break;
         case "ArrowLeft":
-            // Ein Zeichen nach links
+            // Go one cursor position to the left
             if (cursorPosition > 0) {
                 cursorPosition--;
                 updateCursor();
             }
             break;
         case "ArrowRight":
-            // Ein Zeichen nach reckts
+            // Go one cursor position to the right
             if (cursorPosition < textCur.textContent.length) {
                 cursorPosition++;
                 updateCursor();
             }
             break;
         case "Delete":
-            // Ein Zeichen nach rechts löschen
+            // Delete one character to the left
             if (cursorPosition >= textCur.textContent.length)
                 return;
-            if (cursorPosition === 0 && textCur.textContent.length === 0)
+            // No input given yet
+            if (textCur.textContent.length === 0)
                 return;
             const a = text.substring(0, cursorPosition);
             const b = text.substring(cursorPosition+1, text.length);
             textCur.textContent = a+b;
             break;
         case "Enter":
-            // Befehl absenden / Zeilenumbruch
+            // Send out command / line break
             outputText({user: text});
+            // Refocus
+            textIn.focus();
             break;
         case "ArrowUp":
-            // Einen Befehl zurück in der History
+            // Go back one command in the history
             if (history.index > 0) {
                 history.index--;
                 textCur.textContent = history.list[history.index];
                 cursorPosition = textCur.textContent.length;
             }
+            // Update cursor position
             updateCursor();
             break;
         case "ArrowDown":
-            // Einen Befehl nach vorne in der History
+            // Go forward one command in the history
             if (history.index < history.list.length-1) {
                 history.index++;
                 textCur.textContent = history.list[history.index];
                 cursorPosition = textCur.textContent.length;
+            // Reached end of history
             } else if (history.index < history.list.length) {
                 history.index++;
                 textCur.textContent = "";
                 cursorPosition = 0;
             }
+            // Update cursor position
             updateCursor();
             break;
         case "Tab":
@@ -116,9 +118,12 @@ document.addEventListener("keydown", e => {
     }
 });
 
+// Text output or user input handler
 function outputText(params) {
+    // Unpack parameters
     const { user, output, preNext } = params;
 
+    // Temporarily remove core elements
     tbDiv.removeChild(textIn);
     tbDiv.removeChild(textCur);
 
@@ -132,18 +137,19 @@ function outputText(params) {
             history.index = history.list.length;
         }
 
-        // Fix current input to page
+        // Fixate current input to page
         tbDiv.appendChild(createText(user));
         tbDiv.innerHTML += `<br>`;
         cursorYOffset++;
     }
 
+    // Replace text on last pretext
     if (preNext !== undefined) {
         const tbc = tbDiv.children;
         tbc[tbc.length - 1].innerHTML = preNext;
     }
 
-    // Run command and return output
+    // Run as command if it's user input and display output
     const isUserInput = output === undefined && user !== undefined;
     let commandOutput = (isUserInput && !whitespaceOnly) ? runCommand(user) : (output ? output : "");
     if (commandOutput !== "" && commandOutput !== null) {
@@ -153,16 +159,19 @@ function outputText(params) {
         // Offset cursor by at least one line, and as many more as there are line breaks
         cursorYOffset += commandOutput.split("<br>").length;
     }
+
     // Add new pretext to terminal
     if (commandOutput !== null) {
         const prelink = document.createElement('a');
         prelink.innerHTML = pretext.current;
         tbDiv.appendChild(prelink);
     }
-    // Add elements on top of div
+
+    // Add core elements back on top of div
     tbDiv.appendChild(textCur);
     tbDiv.appendChild(textIn);
-    // Reset variables
+
+    // Reset variables and position cursor
     if (isUserInput) {
         textCur.textContent = "";
         cursorPosition = 0;

js/networking.js

@@ -7,6 +7,8 @@ const pretext = {
 const userData = { history: [], chatPull: null };
 let chatMode = "default", activityNotify;
 
+
+// If no user data exists, initialize it
 if (window.localStorage.getItem("id") === null)
     window.localStorage.setItem("id", "");
 if (window.localStorage.getItem("name") === null)
@@ -14,6 +16,8 @@ if (window.localStorage.getItem("name") === null)
 if (window.localStorage.getItem("connected") === null)
     window.localStorage.setItem("connected", "");
 
+
+// Activity request interval
 function setNotification() {
     return setInterval(()=>{
         fetch('/activity', {
@@ -29,6 +33,7 @@ function setNotification() {
     }, 60000);
 }
 
+// If user data is found, check for validity
 if (window.localStorage.getItem("id") !== "" && window.localStorage.getItem("name") !== "") {
     pretext.original = pretext.current = `${window.localStorage.getItem("name")}@baipyr.us:~# `;
 
@@ -43,13 +48,16 @@ if (window.localStorage.getItem("id") !== "" && window.localStorage.getItem("nam
             id: window.localStorage.getItem("id")
         })
     }).then(res => {
+        // Return JSON if status is OK
         if (res.status === 200)
             return res.json();
     }).then(res => {
         if (res === undefined)
             return;
+        // Regularly send activity
         if (res.success)
             activityNotify = setNotification();
+        // Delete user data
         else {
             window.localStorage.setItem("id", "");
             window.localStorage.setItem("name", "");
@@ -64,6 +72,7 @@ if (window.localStorage.getItem("id") !== "" && window.localStorage.getItem("nam
 // Tell server to disconnect
 function disconnect() {
     if (!!window.localStorage.getItem("connected")) {
+        // Send disconnect request
         fetch('/disconnect', {
             method: 'POST',
             headers: {
@@ -74,9 +83,11 @@ function disconnect() {
                 id: window.localStorage.getItem("id")
             })
         }).then(res => {});
+        // Delete user data
         window.localStorage.setItem("id", "");
         window.localStorage.setItem("name", "");
         window.localStorage.setItem("connected", "");
+        // Reset pretext
         pretext.original = pretext.current = "root@baipyr.us:~# ";
     }
 }
@@ -93,6 +104,7 @@ function connect(name) {
         body: JSON.stringify({ name })
     }).then(res => {
         if (res.status === 200) {
+            // Regularly send activity
             activityNotify = setNotification();
             window.localStorage.setItem("connected", "1");
             return res.json();
@@ -102,7 +114,7 @@ function connect(name) {
     }).then(res => {
         if (res === undefined)
             return;
-        // Save provided id
+        // Save provided id, set pretext, output confirmation
         const { id } = res;
         window.localStorage.setItem("id", id);
         pretext.original = pretext.current = `${name}@baipyr.us:~# `;
@@ -127,6 +139,7 @@ function sendNickname(name) {
             name
         })
     }).then(res => {
+        // Return JSON if status is OK
         if (res.status === 200)
             return res.json();
     }).then(res => {
@@ -217,11 +230,13 @@ function requestUsernames() {
             'Accept': 'application/json',
         }
     }).then(res => {
+        // Return JSON if status is OK
         if (res.status === 200)
             return res.json();
     }).then(res => {
         if (res === undefined)
             return;
+        // Output usernames
         let output = "";
         for (const u of res)
             output += `${u.name}#${u.id} `;
@@ -240,6 +255,7 @@ function requestPing() {
     }).then(res => {
         if (res.status !== 200)
             return;
+        // Output measured ping time
         const diff = new Date() - startTime;
         const output = `Host responded after ${diff}ms.`;
         outputText({output})