Fix poweroff if no server is available

Fixes #94.

package.json

@@ -1,6 +1,6 @@
 {
     "name": "fwdekker.com",
-    "version": "0.21.2",
+    "version": "0.21.3",
     "description": "The source code of [my personal website](https://fwdekker.com/).",
     "author": "Felix W. Dekker",
     "repository": {

src/main/js/Main.ts

@@ -1,3 +1,4 @@
+import {Persistence} from "./Persistence";
 import {addOnLoad, q} from "./Shared";
 import {Terminal} from "./Terminal";
 
@@ -19,6 +20,12 @@ declare global {
 
 
 addOnLoad(() => {
+    if (Persistence.getPoweroff()) {
+        q("#terminalOutput").innerText = "Could not connect to fwdekker.com. Retrying in 10 seconds.";
+        setTimeout(() => location.reload(), 10000);
+        return;
+    }
+
     window.terminal = new Terminal(
         q("#terminal"),
         q("#terminalCurrentFocusInput"),

src/main/js/Persistence.ts

@@ -68,9 +68,9 @@ export class Persistence {
                 if (parsedFiles instanceof Directory)
                     return new FileSystem(parsedFiles);
                 else
-                    console.warn("`files` cookie contains non-directory.");
+                    console.warn("'files' cookie contains non-directory.");
             } catch (error) {
-                console.warn("Failed to deserialize `files` cookie.", error);
+                console.warn("Failed to deserialize 'files' cookie.", error);
             }
         }
 
@@ -93,7 +93,7 @@ export class Persistence {
         try {
             return new InputHistory(JSON.parse(localStorage.getItem("history") ?? "[]"));
         } catch (error) {
-            console.warn("Failed to deserialize `history` cookie.", error);
+            console.warn("Failed to deserialize 'history' cookie.", error);
             return new InputHistory();
         }
     }
@@ -107,13 +107,25 @@ export class Persistence {
         localStorage.setItem("history", JSON.stringify(history.entries));
     }
 
+    /**
+     * Returns the persisted "power off" setting.
+     */
+    static getPoweroff(): boolean {
+        try {
+            return JSON.parse(Cookies.get("poweroff") ?? "false");
+        } catch(error) {
+            console.warn("Failed to deserialize 'poweroff' cookie.", error);
+            return false;
+        }
+    }
+
     /**
      * Persists the "power off" setting.
      *
      * @param value the value to persist for the "power off" setting
      */
     static setPoweroff(value: boolean): void {
-        Cookies.set("poweroff", `${value}`, {
+        Cookies.set("poweroff", "" + value, {
             "expires": new Date(new Date().setSeconds(new Date().getSeconds() + 30)),
             "path": "/"
         });