add auto vacuum and shrink database button

server/database.js

@@ -114,6 +114,7 @@ class Database {
         // Change to WAL
         await R.exec("PRAGMA journal_mode = WAL");
         await R.exec("PRAGMA cache_size = -12000");
+        await R.exec("PRAGMA auto_vacuum = FULL");
 
         console.log("SQLite config:");
         console.log(await R.getAll("PRAGMA journal_mode"));
@@ -374,6 +375,17 @@ class Database {
             console.log("Nothing to restore");
         }
     }
+
+    static getSize() {
+        debug("Database.getSize()");
+        let stats = fs.statSync(Database.path);
+        debug(stats);
+        return stats.size;
+    }
+
+    static async shrink() {
+        await R.exec("VACUUM");
+    }
 }
 
 module.exports = Database;

server/server.js

@@ -119,6 +119,7 @@ module.exports.io = io;
 // Must be after io instantiation
 const { sendNotificationList, sendHeartbeatList, sendImportantHeartbeatList, sendInfo } = require("./client");
 const { statusPageSocketHandler } = require("./socket-handlers/status-page-socket-handler");
+const databaseSocketHandler = require("./socket-handlers/database-socket-handler");
 
 app.use(express.json());
 
@@ -1295,6 +1296,7 @@ exports.entryPage = "dashboard";
 
         // Status Page Socket Handler for admin only
         statusPageSocketHandler(socket);
+        databaseSocketHandler(socket);
 
         debug("added all socket handlers");
 

server/socket-handlers/database-socket-handler.js

@@ -0,0 +1,37 @@
+const { checkLogin } = require("../util-server");
+const Database = require("../database");
+
+module.exports = (socket) => {
+
+    // Post or edit incident
+    socket.on("getDatabaseSize", async (callback) => {
+        try {
+            checkLogin(socket);
+            callback({
+                ok: true,
+                size: Database.getSize(),
+            });
+        } catch (error) {
+            callback({
+                ok: false,
+                msg: error.message,
+            });
+        }
+    });
+
+    socket.on("shrinkDatabase", async (callback) => {
+        try {
+            checkLogin(socket);
+            Database.shrink();
+            callback({
+                ok: true,
+            });
+        } catch (error) {
+            callback({
+                ok: false,
+                msg: error.message,
+            });
+        }
+    });
+
+};