implement json configuration

.gitignore

@@ -37,4 +37,7 @@ build/
 ### Mac OS ###
 .DS_Store
 
-.idea/
+.idea/
+
+# mptv
+config.json

pom.xml

@@ -20,6 +20,16 @@
             <version>5.10.2</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.17.0</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-cli</groupId>
+            <artifactId>commons-cli</artifactId>
+            <version>1.6.0</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/mykola2312/mptv/Config.java

@@ -0,0 +1,22 @@
+package com.mykola2312.mptv;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectReader;
+
+import java.io.File;
+import java.io.IOException;
+
+public class Config {
+
+    public class Frame {
+        public short width;
+        public short height;
+        public boolean fullscreen;
+
+    }
+    public Frame frame;
+
+    public static Config loadConfig(String path) throws IOException {
+        return new ObjectMapper().readerFor(Config.class).readValue(new File(path));
+    }
+}

src/main/java/com/mykola2312/mptv/Main.java

@@ -1,10 +1,39 @@
 package com.mykola2312.mptv;
 
 import com.mykola2312.mptv.ui.MainFrame;
+import org.apache.commons.cli.*;
+
+import java.io.IOException;
 
 public class Main {
     public static void main(String[] args) {
+        final Options options = new Options();
+        options.addOption(Option
+                .builder("c")
+                .longOpt("config")
+                .required(false)
+                .hasArg()
+                .build());
+        CommandLine cmd;
+        try {
+            cmd = new DefaultParser().parse(options, args);
+        } catch (ParseException e) {
+            System.err.println(e.toString());
+            System.exit(1);
+            return;
+        }
+
+        final String configPath = cmd.hasOption('c') ? cmd.getOptionValue('c') : "config.json";
+        Config config;
+        try {
+            config = Config.loadConfig(configPath);
+        } catch (IOException e) {
+            System.err.printf("failed to read config: %s\n", e.toString());
+            System.exit(1);
+            return;
+        }
+
         MainFrame frame = new MainFrame();
-        frame.create();
+        frame.create(config.frame.width, config.frame.height, config.frame.fullscreen);
     }
 }

src/main/java/com/mykola2312/mptv/ui/MainFrame.java

@@ -3,16 +3,23 @@ package com.mykola2312.mptv.ui;
 import com.mykola2312.mptv.I18n;
 
 import javax.swing.*;
+import java.awt.*;
 
 public class MainFrame {
     private JFrame frame;
 
-    public void create() {
+    public void create(short width, short height, boolean fullscreen) {
         this.frame = new JFrame(I18n.get("MainFrame_Title"));
 
-        frame.setUndecorated(true);
-        frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
-        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
+        if (fullscreen) {
+            frame.setUndecorated(true);
+            frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE);
+            frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
+        } else {
+            Dimension size = new Dimension(width, height);
+            frame.setPreferredSize(size);
+            frame.setSize(size);
+        }
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
     }