Added ability to start a server

app/MinecraftServer.js

@@ -1,3 +1,4 @@
+const { exec } = require("child_process");
 const fs = require('fs');
 
 class Server {
@@ -11,21 +12,44 @@ class Server {
     if (fs.existsSync(versionFilePath)) {
       this.version = fs.readFileSync(versionFilePath, {encoding:'utf8', flag:'r'});      
     }
-
-    // set server state
-    if (fs.existsSync(this.pidFilePath)) {
-      this.state = true;
-    } else {
-      this.state = false;
-    }
   }
 
   start() {
-    console.log('Starting server...');
+    console.log(`Starting server ${this.name}...`);
+
+    // create shell command and execute it
+    let cmd = `${this.rootDir}/start.sh`;
+    exec(cmd, (err, stdout, stderr) => {
+      if (err) {
+        console.log(`Error while starting server: ${error.message}`);
+      }
+
+      console.log(`Server ${this.name} has been started.`);
+    });
   }
 
   stop() {
-    console.log('Stopping server...');
+    console.log(`Stopping server ${this.name}...`);
+  }
+
+  getStatus() {
+    if (fs.existsSync(this.pidFilePath)) {
+      let pid = fs.readFileSync(this.pidFilePath, {encoding: 'utf8', flag: 'r'});
+      try {
+        return process.kill(pid, 0);
+      } catch (err) {
+        // ESRCH error means the process doesn't exist, so should return false
+        if (err.code !== 'ESRCH') {
+          console.error(err);
+          return err.code === 'EPERM';
+        } else {
+          // delete pid.txt so we don't have to worry about checking it again
+          fs.unlinkSync(this.pidFilePath);
+        }
+      }
+    }
+
+    return false
   }
 
   getPid() {