Init

.gitignore

@@ -0,0 +1,42 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/vcs.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings" defaultProject="true" />
+</project>

README.md

@@ -0,0 +1,61 @@
+# Hello World JetBrains Plugin Template
+
+This is a simple Hello World template for a JetBrains plugin that will work with any of their IDEs. It demonstrates the basic structure and components needed for a JetBrains plugin.
+
+## Project Structure
+
+- `build.gradle`: Gradle build configuration for the plugin
+- `settings.gradle`: Gradle settings for the project
+- `src/main/java/org/example/HelloWorldAction.java`: The action class that displays a "Hello World" message
+- `src/main/resources/META-INF/plugin.xml`: Plugin configuration file
+
+## Features
+
+- Adds a "Hello World" action to the Tools menu
+- Provides a keyboard shortcut (Ctrl+Alt+H) to trigger the action
+- Displays a simple message dialog when the action is triggered
+
+## Building the Plugin
+
+To build the plugin, run:
+
+```bash
+./gradlew build
+```
+
+This will create a plugin ZIP file in the `build/distributions` directory.
+
+## Installing the Plugin
+
+1. Open any JetBrains IDE (IntelliJ IDEA, PyCharm, WebStorm, etc.)
+2. Go to Settings/Preferences > Plugins
+3. Click on the gear icon and select "Install Plugin from Disk..."
+4. Navigate to the `build/distributions` directory and select the ZIP file
+5. Restart the IDE when prompted
+
+## Using the Plugin
+
+After installing the plugin:
+
+1. Go to the Tools menu and click on "Hello World", or
+2. Use the keyboard shortcut Ctrl+Alt+H
+
+A message dialog will appear with the text "Hello, World!".
+
+## Customizing the Plugin
+
+To customize the plugin:
+
+1. Update the plugin metadata in `plugin.xml`
+2. Modify the `HelloWorldAction` class to change the behavior
+3. Add more actions or extensions as needed
+
+## Requirements
+
+- Java 11 or later
+- Gradle 7.0 or later
+- Any JetBrains IDE for testing
+
+## License
+
+This template is available under the MIT License.

build.gradle

@@ -0,0 +1,51 @@
+plugins {
+    id 'java'
+    id 'org.jetbrains.intellij' version '1.17.1'
+}
+
+group = 'org.example'
+version = '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+// Configure Gradle IntelliJ Plugin
+intellij {
+    version = '2023.1.5'
+    type = 'IC' // Target IDE Platform - IC for IntelliJ IDEA Community Edition
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+}
+
+// Configure plugin metadata
+patchPluginXml {
+    sinceBuild = '231'
+    untilBuild = '241.*'
+    pluginDescription = '''
+    A plugin for JetBrains IDEs that automatically prefixes commit messages with information extracted from branch names.
+
+    Features:
+    <ul>
+        <li>Extract information from branch names using configurable regex patterns</li>
+        <li>Format commit messages using configurable format patterns</li>
+        <li>Enable/disable the plugin from the commit dialog</li>
+        <li>Configure the plugin from the IDE settings</li>
+    </ul>
+
+    Example:
+    <ul>
+        <li>Branch name: feature/12345-add-new-feature</li>
+        <li>Commit message: "Initial implementation"</li>
+        <li>Result: "#12345 - Initial implementation"</li>
+    </ul>
+    '''
+    changeNotes = 'Initial release of the Commit Message Prefixer plugin'
+}
+
+test {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sat Mar 22 10:46:22 AEDT 2025
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'hello-world-plugin'

settings.gradle.kts

@@ -0,0 +1,2 @@
+rootProject.name = "untitled"
+

src/main/java/org/example/CommitPrefixerCheckinHandlerFactory.java

@@ -0,0 +1,194 @@
+package org.example;
+
+import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.Messages;
+import com.intellij.openapi.vcs.CheckinProjectPanel;
+import com.intellij.openapi.vcs.changes.CommitContext;
+import com.intellij.openapi.vcs.checkin.CheckinHandler;
+import com.intellij.openapi.vcs.checkin.CheckinHandlerFactory;
+import com.intellij.openapi.vcs.ui.RefreshableOnComponent;
+import com.intellij.ui.components.JBCheckBox;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.InputStreamReader;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
+
+/**
+ * Factory for creating commit handlers that prefix commit messages with information from branch names.
+ */
+public class CommitPrefixerCheckinHandlerFactory extends CheckinHandlerFactory {
+    private static final Logger LOG = Logger.getInstance(CommitPrefixerCheckinHandlerFactory.class);
+
+    @NotNull
+    @Override
+    public CheckinHandler createHandler(@NotNull CheckinProjectPanel panel, @NotNull CommitContext commitContext) {
+        return new CommitPrefixerCheckinHandler(panel);
+    }
+
+    private static class CommitPrefixerCheckinHandler extends CheckinHandler {
+        private final CheckinProjectPanel panel;
+        private final Project project;
+
+        public CommitPrefixerCheckinHandler(@NotNull CheckinProjectPanel panel) {
+            this.panel = panel;
+            this.project = panel.getProject();
+            
+            // Pre-fill the commit message if the PRE_FILL mode is selected
+            CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+            if (settings.isEnabled() && settings.getPrefixingMode() == CommitPrefixerSettings.PrefixingMode.PRE_FILL) {
+                try {
+                    // Get the current branch name
+                    String branchName = getCurrentBranchName();
+                    if (branchName != null && !branchName.isEmpty()) {
+                        // Get the current commit message
+                        String commitMessage = panel.getCommitMessage();
+                        
+                        // Apply the prefix to the commit message
+                        String prefixedMessage = prefixCommitMessage(branchName, commitMessage, settings);
+                        
+                        // Set the prefixed commit message
+                        panel.setCommitMessage(prefixedMessage);
+                    }
+                } catch (Exception e) {
+                    LOG.error("Error pre-filling commit message", e);
+                }
+            }
+        }
+
+        @Nullable
+        @Override
+        public RefreshableOnComponent getBeforeCheckinConfigurationPanel() {
+            CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+
+            // Create a checkbox to enable/disable the prefixer for this commit
+            JBCheckBox checkBox = new JBCheckBox("Prefix commit message with branch information");
+            checkBox.setSelected(settings.isEnabled());
+            checkBox.addActionListener(e -> settings.setEnabled(checkBox.isSelected()));
+
+            return new RefreshableOnComponent() {
+                @Override
+                public JComponent getComponent() {
+                    JPanel panel = new JPanel(new BorderLayout());
+                    panel.add(checkBox, BorderLayout.WEST);
+                    return panel;
+                }
+
+                @Override
+                public void refresh() {
+                    checkBox.setSelected(settings.isEnabled());
+                }
+
+                @Override
+                public void saveState() {
+                    settings.setEnabled(checkBox.isSelected());
+                }
+
+                @Override
+                public void restoreState() {
+                    checkBox.setSelected(settings.isEnabled());
+                }
+            };
+        }
+
+        @Override
+        public ReturnResult beforeCheckin() {
+            CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+
+            // Skip if the plugin is disabled or if the mode is PRE_FILL
+            if (!settings.isEnabled() || settings.getPrefixingMode() == CommitPrefixerSettings.PrefixingMode.PRE_FILL) {
+                return ReturnResult.COMMIT;
+            }
+
+            try {
+                // Get the current branch name
+                String branchName = getCurrentBranchName();
+                if (branchName == null || branchName.isEmpty()) {
+                    LOG.warn("Could not determine current branch name");
+                    return ReturnResult.COMMIT;
+                }
+
+                // Get the current commit message
+                String commitMessage = panel.getCommitMessage();
+
+                // Apply the prefix to the commit message
+                String prefixedMessage = prefixCommitMessage(branchName, commitMessage, settings);
+
+                // Set the prefixed commit message
+                panel.setCommitMessage(prefixedMessage);
+
+            } catch (Exception e) {
+                LOG.error("Error prefixing commit message", e);
+            }
+
+            return ReturnResult.COMMIT;
+        }
+
+        /**
+         * Gets the current branch name using Git command line.
+         */
+        @Nullable
+        private String getCurrentBranchName() {
+            try {
+                // Get the project base directory
+                String basePath = project.getBasePath();
+                if (basePath == null) {
+                    return null;
+                }
+
+                // Run 'git branch --show-current' command
+                ProcessBuilder processBuilder = new ProcessBuilder("git", "branch", "--show-current");
+                processBuilder.directory(new File(basePath));
+                Process process = processBuilder.start();
+
+                // Read the output
+                try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+                    String branch = reader.readLine();
+                    process.waitFor();
+                    return branch;
+                }
+            } catch (Exception e) {
+                LOG.error("Error getting current branch name", e);
+                return null;
+            }
+        }
+
+        /**
+         * Prefixes the commit message with information extracted from the branch name.
+         */
+        private String prefixCommitMessage(String branchName, String commitMessage, CommitPrefixerSettings settings) {
+            try {
+                // Compile the regex pattern
+                Pattern pattern = Pattern.compile(settings.getBranchExtractionPattern());
+                Matcher matcher = pattern.matcher(branchName);
+
+                // If the pattern matches, extract the information and format the commit message
+                if (matcher.matches()) {
+                    String format = settings.getCommitMessageFormat();
+
+                    // Replace $1, $2, etc. with the corresponding capture groups
+                    for (int i = 1; i <= matcher.groupCount(); i++) {
+                        format = format.replace("$" + i, matcher.group(i));
+                    }
+
+                    // Replace $MESSAGE with the original commit message
+                    format = format.replace("$MESSAGE", commitMessage);
+
+                    return format;
+                }
+            } catch (PatternSyntaxException e) {
+                LOG.error("Invalid regex pattern: " + settings.getBranchExtractionPattern(), e);
+            }
+
+            // If the pattern doesn't match or there's an error, return the original commit message
+            return commitMessage;
+        }
+    }
+}

src/main/java/org/example/CommitPrefixerConfigurable.java

@@ -0,0 +1,118 @@
+package org.example;
+
+import com.intellij.openapi.options.Configurable;
+import com.intellij.openapi.options.ConfigurationException;
+import com.intellij.openapi.project.Project;
+import com.intellij.ui.components.JBCheckBox;
+import com.intellij.ui.components.JBLabel;
+import com.intellij.ui.components.JBTextField;
+import com.intellij.util.ui.FormBuilder;
+import org.jetbrains.annotations.Nls;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * Provides a settings UI for the Commit Prefixer plugin.
+ */
+public class CommitPrefixerConfigurable implements Configurable {
+    private final Project project;
+    private JBTextField branchExtractionPatternField;
+    private JBTextField commitMessageFormatField;
+    private JBCheckBox enabledCheckBox;
+    private JComboBox<CommitPrefixerSettings.PrefixingMode> prefixingModeComboBox;
+
+    public CommitPrefixerConfigurable(Project project) {
+        this.project = project;
+    }
+
+    @Nls(capitalization = Nls.Capitalization.Title)
+    @Override
+    public String getDisplayName() {
+        return "Commit Prefixer";
+    }
+
+    @Nullable
+    @Override
+    public JComponent createComponent() {
+        branchExtractionPatternField = new JBTextField();
+        commitMessageFormatField = new JBTextField();
+        enabledCheckBox = new JBCheckBox("Enable commit message prefixing");
+        
+        // Create a combo box for the prefixing mode
+        prefixingModeComboBox = new JComboBox<>(CommitPrefixerSettings.PrefixingMode.values());
+        prefixingModeComboBox.setRenderer(new DefaultListCellRenderer() {
+            @Override
+            public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
+                super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
+                if (value instanceof CommitPrefixerSettings.PrefixingMode) {
+                    setText(((CommitPrefixerSettings.PrefixingMode) value).getDisplayName());
+                }
+                return this;
+            }
+        });
+
+        // Add help text
+        JBLabel branchPatternHelp = new JBLabel("<html>Pattern to extract information from branch names.<br>" +
+                "Example: (bug|feature)/(\\d+)-(.+)<br>" +
+                "This matches 'bug/12345-description' or 'feature/12345-description'</html>");
+        branchPatternHelp.setForeground(Color.GRAY);
+
+        JBLabel formatHelp = new JBLabel("<html>Format for the commit message prefix.<br>" +
+                "Use $1, $2, etc. to reference capture groups from the regex pattern.<br>" +
+                "Use $MESSAGE to reference the original commit message.<br>" +
+                "Example: #$2 - $MESSAGE</html>");
+        formatHelp.setForeground(Color.GRAY);
+
+        JBLabel prefixingModeHelp = new JBLabel("<html>When to add the prefix to the commit message:<br>" +
+                "<b>Before commit</b>: Add the prefix right before the commit is made<br>" +
+                "<b>Pre-fill in commit dialog</b>: Add the prefix when the commit dialog opens</html>");
+        prefixingModeHelp.setForeground(Color.GRAY);
+
+        // Build the form
+        FormBuilder builder = FormBuilder.createFormBuilder()
+                .addComponent(enabledCheckBox)
+                .addLabeledComponent("Prefixing Mode:", prefixingModeComboBox)
+                .addComponent(prefixingModeHelp)
+                .addLabeledComponent("Branch Extraction Pattern:", branchExtractionPatternField)
+                .addComponent(branchPatternHelp)
+                .addLabeledComponent("Commit Message Format:", commitMessageFormatField)
+                .addComponent(formatHelp);
+
+        return builder.getPanel();
+    }
+
+    @Override
+    public boolean isModified() {
+        CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+        return !branchExtractionPatternField.getText().equals(settings.getBranchExtractionPattern()) ||
+               !commitMessageFormatField.getText().equals(settings.getCommitMessageFormat()) ||
+               enabledCheckBox.isSelected() != settings.isEnabled() ||
+               prefixingModeComboBox.getSelectedItem() != settings.getPrefixingMode();
+    }
+
+    @Override
+    public void apply() throws ConfigurationException {
+        CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+        settings.setBranchExtractionPattern(branchExtractionPatternField.getText());
+        settings.setCommitMessageFormat(commitMessageFormatField.getText());
+        settings.setEnabled(enabledCheckBox.isSelected());
+        settings.setPrefixingMode((CommitPrefixerSettings.PrefixingMode) prefixingModeComboBox.getSelectedItem());
+    }
+
+    @Override
+    public void reset() {
+        CommitPrefixerSettings settings = CommitPrefixerSettings.getInstance(project);
+        branchExtractionPatternField.setText(settings.getBranchExtractionPattern());
+        commitMessageFormatField.setText(settings.getCommitMessageFormat());
+        enabledCheckBox.setSelected(settings.isEnabled());
+        prefixingModeComboBox.setSelectedItem(settings.getPrefixingMode());
+    }
+
+    @Nullable
+    @Override
+    public String getHelpTopic() {
+        return "Commit Prefixer Settings";
+    }
+}

src/main/java/org/example/CommitPrefixerSettings.java

@@ -0,0 +1,95 @@
+package org.example;
+
+import com.intellij.openapi.components.*;
+import com.intellij.openapi.project.Project;
+import com.intellij.util.xmlb.XmlSerializerUtil;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Persistent settings for the Commit Prefixer plugin.
+ * Stores the regex pattern for extracting information from branch names
+ * and the format pattern for the commit message prefix.
+ */
+@State(
+    name = "CommitPrefixerSettings",
+    storages = {@Storage("commitPrefixerSettings.xml")}
+)
+public class CommitPrefixerSettings implements PersistentStateComponent<CommitPrefixerSettings> {
+    /**
+     * Enum defining when the prefix should be added to the commit message.
+     */
+    public enum PrefixingMode {
+        BEFORE_COMMIT("Before commit"),
+        PRE_FILL("Pre-fill in commit dialog");
+
+        private final String displayName;
+
+        PrefixingMode(String displayName) {
+            this.displayName = displayName;
+        }
+
+        public String getDisplayName() {
+            return displayName;
+        }
+    }
+
+    // Default regex pattern: matches "bug/12345-description" or "feature/12345-description"
+    private String branchExtractionPattern = "(bug|feature)/(\\d+)-(.+)";
+    
+    // Default format pattern: uses the second capture group from the regex
+    private String commitMessageFormat = "#$2 - $MESSAGE";
+    
+    // Whether the plugin is enabled
+    private boolean enabled = true;
+
+    // When to add the prefix to the commit message
+    private PrefixingMode prefixingMode = PrefixingMode.BEFORE_COMMIT;
+
+    public static CommitPrefixerSettings getInstance(Project project) {
+        return project.getService(CommitPrefixerSettings.class);
+    }
+
+    @Nullable
+    @Override
+    public CommitPrefixerSettings getState() {
+        return this;
+    }
+
+    @Override
+    public void loadState(@NotNull CommitPrefixerSettings state) {
+        XmlSerializerUtil.copyBean(state, this);
+    }
+
+    public String getBranchExtractionPattern() {
+        return branchExtractionPattern;
+    }
+
+    public void setBranchExtractionPattern(String branchExtractionPattern) {
+        this.branchExtractionPattern = branchExtractionPattern;
+    }
+
+    public String getCommitMessageFormat() {
+        return commitMessageFormat;
+    }
+
+    public void setCommitMessageFormat(String commitMessageFormat) {
+        this.commitMessageFormat = commitMessageFormat;
+    }
+
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public PrefixingMode getPrefixingMode() {
+        return prefixingMode;
+    }
+
+    public void setPrefixingMode(PrefixingMode prefixingMode) {
+        this.prefixingMode = prefixingMode;
+    }
+}

src/main/java/org/example/HelloWorldAction.java

@@ -0,0 +1,28 @@
+package org.example;
+
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.Messages;
+
+/**
+ * A simple action that displays a "Hello World" message when triggered.
+ */
+public class HelloWorldAction extends AnAction {
+
+    @Override
+    public void actionPerformed(AnActionEvent e) {
+        Project project = e.getProject();
+        Messages.showMessageDialog(
+                project,
+                "Hello, World!",
+                "Hello World Plugin",
+                Messages.getInformationIcon()
+        );
+    }
+
+    @Override
+    public String toString() {
+        return "";
+    }
+}

src/main/java/org/example/Main.java

@@ -0,0 +1,17 @@
+package org.example;
+
+//TIP To <b>Run</b> code, press <shortcut actionId="Run"/> or
+// click the <icon src="AllIcons.Actions.Execute"/> icon in the gutter.
+public class Main {
+    public static void main(String[] args) {
+        //TIP Press <shortcut actionId="ShowIntentionActions"/> with your caret at the highlighted text
+        // to see how IntelliJ IDEA suggests fixing it.
+        System.out.printf("Hello and welcome!");
+
+        for (int i = 1; i <= 5; i++) {
+            //TIP Press <shortcut actionId="Debug"/> to start debugging your code. We have set one <icon src="AllIcons.Debugger.Db_set_breakpoint"/> breakpoint
+            // for you, but you can always add more by pressing <shortcut actionId="ToggleLineBreakpoint"/>.
+            System.out.println("i = " + i);
+        }
+    }
+}

src/main/resources/META-INF/plugin.xml

@@ -0,0 +1,55 @@
+<idea-plugin>
+    <id>org.example.commit-prefixer</id>
+    <name>Commit Message Prefixer</name>
+    <vendor email="support@example.com" url="http://www.example.com">Example Vendor</vendor>
+
+    <description><![CDATA[
+    A plugin for JetBrains IDEs that automatically prefixes commit messages with information extracted from branch names.
+
+    Features:
+    <ul>
+        <li>Extract information from branch names using configurable regex patterns</li>
+        <li>Format commit messages using configurable format patterns</li>
+        <li>Enable/disable the plugin from the commit dialog</li>
+        <li>Configure the plugin from the IDE settings</li>
+    </ul>
+
+    Example:
+    <ul>
+        <li>Branch name: feature/12345-add-new-feature</li>
+        <li>Commit message: "Initial implementation"</li>
+        <li>Result: "#12345 - Initial implementation"</li>
+    </ul>
+    ]]></description>
+
+    <!-- Product and plugin compatibility requirements -->
+    <depends>com.intellij.modules.platform</depends>
+    <depends>com.intellij.modules.vcs</depends>
+
+    <extensions defaultExtensionNs="com.intellij">
+        <!-- Register the settings service -->
+        <projectService serviceImplementation="org.example.CommitPrefixerSettings"/>
+
+        <!-- Register the settings UI -->
+        <projectConfigurable 
+            parentId="tools" 
+            instance="org.example.CommitPrefixerConfigurable" 
+            id="org.example.CommitPrefixerConfigurable" 
+            displayName="Commit Prefixer"/>
+
+        <!-- Register the commit message prefixer -->
+        <checkinHandlerFactory implementation="org.example.CommitPrefixerCheckinHandlerFactory"/>
+    </extensions>
+
+    <actions>
+        <!-- Add your actions here -->
+        <action id="org.example.HelloWorldAction" 
+                class="org.example.HelloWorldAction" 
+                text="Hello World" 
+                description="Displays a Hello World message">
+            <add-to-group group-id="ToolsMenu" anchor="last"/>
+            <keyboard-shortcut keymap="$default" first-keystroke="ctrl alt H"/>
+        </action>
+
+    </actions>
+</idea-plugin>