feat: subcommand key

src/main/java/me/hatter/tools/jwtutil/JwtCliUtil.java

@@ -0,0 +1,24 @@
+package me.hatter.tools.jwtutil;
+
+import java.util.List;
+
+public class JwtCliUtil {
+
+    public static void executeSubCommand(List<SubCommand> subCommands, String[] args) {
+        final String arg0 = args[0];
+        final String[] leftArgs = subStringArray1(args);
+        for (SubCommand subCommand : subCommands) {
+            if (subCommand.matches(arg0)) {
+                subCommand.execute(leftArgs);
+            }
+        }
+        System.err.println("[ERROR] Unknown sub command: " + arg0);
+    }
+
+
+    private static String[] subStringArray1(String[] args) {
+        final String[] newArgs = new String[args.length - 1];
+        System.arraycopy(args, 1, newArgs, 0, newArgs.length);
+        return newArgs;
+    }
+}

src/main/java/me/hatter/tools/jwtutil/JwtUtilMain.java

@@ -1,8 +1,28 @@
 package me.hatter.tools.jwtutil;
 
+import me.hatter.tools.jwtutil.commands.HelpSubCommand;
+import me.hatter.tools.jwtutil.commands.KeySubCommand;
+
+import java.util.ArrayList;
+import java.util.List;
+
 public class JwtUtilMain {
 
+    static List<SubCommand> SUB_COMMANDS = new ArrayList<>();
+
+    static {
+        SUB_COMMANDS.add(new HelpSubCommand());
+        SUB_COMMANDS.add(new KeySubCommand());
+    }
+
     public static void main(String[] args) {
+        if (args == null || args.length == 0) {
             System.out.println("jwt-util v0.0.1");
+            System.out.println("\n");
+            System.out.println("jwt-util --help for help");
+            return;
+        }
+
+        JwtCliUtil.executeSubCommand(SUB_COMMANDS, args);
     }
 }

src/main/java/me/hatter/tools/jwtutil/SubCommand.java

@@ -0,0 +1,8 @@
+package me.hatter.tools.jwtutil;
+
+public interface SubCommand {
+
+    boolean matches(String arg0);
+
+    void execute(String[] args);
+}

src/main/java/me/hatter/tools/jwtutil/commands/HelpSubCommand.java

@@ -0,0 +1,17 @@
+package me.hatter.tools.jwtutil.commands;
+
+import me.hatter.tools.jwtutil.SubCommand;
+
+import java.util.Arrays;
+
+public class HelpSubCommand implements SubCommand {
+    @Override
+    public boolean matches(String arg0) {
+        return Arrays.asList("help", "-h", "--help").contains(arg0);
+    }
+
+    @Override
+    public void execute(String[] args) {
+        System.out.println("help message ...");
+    }
+}

src/main/java/me/hatter/tools/jwtutil/commands/KeyGenerateSubCommand.java

@@ -0,0 +1,28 @@
+package me.hatter.tools.jwtutil.commands;
+
+import me.hatter.tools.commons.security.key.KeyPairTool;
+import me.hatter.tools.commons.security.key.KeyUtil;
+import me.hatter.tools.commons.security.key.PKType;
+import me.hatter.tools.jwtutil.SubCommand;
+
+import java.security.KeyPair;
+
+public class KeyGenerateSubCommand implements SubCommand {
+    @Override
+    public boolean matches(String arg0) {
+        return "generate".equals(arg0);
+    }
+
+    @Override
+    public void execute(String[] args) {
+        final KeyPair kp = KeyPairTool.ins(PKType.RSA2048).generateKeyPair().getKeyPair();
+
+        System.out.println(KeyUtil.serializePublicKeyToPEM(kp.getPublic()));
+        System.out.println(KeyUtil.serializePrivateKeyToPEM(kp.getPrivate()));
+
+        final KeyPair kp2 = KeyPairTool.ins(PKType.secp256r1).generateKeyPair().getKeyPair();
+
+        System.out.println(KeyUtil.serializePublicKeyToPEM(kp2.getPublic()));
+        System.out.println(KeyUtil.serializePrivateKeyToPEM(kp2.getPrivate()));
+    }
+}

src/main/java/me/hatter/tools/jwtutil/commands/KeySubCommand.java

@@ -0,0 +1,34 @@
+package me.hatter.tools.jwtutil.commands;
+
+import me.hatter.tools.commons.security.key.KeyPairTool;
+import me.hatter.tools.commons.security.key.KeyUtil;
+import me.hatter.tools.commons.security.key.PKType;
+import me.hatter.tools.jwtutil.JwtCliUtil;
+import me.hatter.tools.jwtutil.SubCommand;
+
+import java.security.KeyPair;
+import java.util.ArrayList;
+import java.util.List;
+
+public class KeySubCommand implements SubCommand {
+    private static List<SubCommand> SUB_COMMANDS = new ArrayList<>();
+
+    static {
+        SUB_COMMANDS.add(new KeyGenerateSubCommand());
+    }
+
+    @Override
+    public boolean matches(String arg0) {
+        return "key".equals(arg0);
+    }
+
+    @Override
+    public void execute(String[] args) {
+        if (args.length == 0) {
+            System.out.println("jwt-util key --help for help");
+            return;
+        }
+
+        JwtCliUtil.executeSubCommand(SUB_COMMANDS, args);
+    }
+}