feat: add Claude AI provider

Author: Jimmy Kerketta

CONTRIBUTING.md

@@ -19,6 +19,7 @@ This project is participating in [Hacktoberfest](https://hacktoberfest.com)! We
 ## Code of Conduct
 
 This project adheres to the Hacktoberfest values:
+
 - **Everyone is welcome** - We value diversity and inclusivity
 - **Quantity is fun, quality is key** - We prioritize meaningful contributions
 - **Short-term action, long-term impact** - Your contributions help build the future
@@ -30,6 +31,7 @@ Please be respectful and constructive in all interactions.
 ### 🐛 Reporting Bugs
 
 Before creating a bug report:
+
 - Check the [existing issues](https://github.com/dfanso/commit-msg/issues) to avoid duplicates
 - Collect information about the bug:
   - OS and version
@@ -40,6 +42,7 @@ Before creating a bug report:
 ### 💡 Suggesting Enhancements
 
 Enhancement suggestions are welcome! Please:
+
 - Use a clear and descriptive title
 - Provide a detailed description of the proposed feature
 - Explain why this enhancement would be useful
@@ -51,6 +54,7 @@ Look for issues labeled `good first issue` or `help wanted` - these are great fo
 ### 📝 Documentation
 
 Improving documentation is always appreciated:
+
 - Fix typos or unclear instructions
 - Add examples
 - Improve README clarity
@@ -78,10 +82,12 @@ Improving documentation is always appreciated:
 - API key for either:
   - Google Gemini (`GEMINI_API_KEY`)
   - Grok (`GROK_API_KEY`)
+  - Claude (`CLAUDE_API_KEY`)
 
 ### Environment Setup
 
 1. Set up your environment variables:
+
    ```bash
    export COMMIT_LLM=gemini  # or "grok"
    export GEMINI_API_KEY=your-api-key-here
@@ -90,11 +96,13 @@ Improving documentation is always appreciated:
    ```
 
 2. Install dependencies:
+
    ```bash
    go mod download
    ```
 
 3. Run the application:
+
    ```bash
    go run src/main.go .
    ```
@@ -107,6 +115,7 @@ Improving documentation is always appreciated:
 ### Testing Your Changes
 
 Before submitting a PR:
+
 1. Test the application in a Git repository
 2. Verify both LLM providers work (if applicable)
 3. Check for any errors or warnings
@@ -124,6 +133,7 @@ Before submitting a PR:
 ### PR Title Format
 
 Use conventional commit format:
+
 - `feat:` - New feature
 - `fix:` - Bug fix
 - `docs:` - Documentation changes
@@ -151,7 +161,7 @@ func GenerateMessage(changes string, apiKey string) (string, error) {
     if changes == "" {
         return "", fmt.Errorf("no changes provided")
     }
-    
+
     // Implementation here
     return message, nil
 }
@@ -170,6 +180,7 @@ func GenerateMessage(changes string, apiKey string) (string, error) {
 ## Questions?
 
 Feel free to:
+
 - Open an issue with the `question` label
 - Reach out to the maintainers
 - Check existing issues and PRs for similar questions
@@ -181,4 +192,3 @@ By contributing, you agree that your contributions will be licensed under the sa
 ---
 
 Thank you for contributing to commit-msg! 🚀
-

README.md

@@ -20,6 +20,7 @@ Before running the application, ensure you have set the system environment varia
 This project is participating in **Hacktoberfest 2025**! We welcome contributions from developers of all skill levels.
 
 Looking to contribute? Check out:
+
 - [Good First Issues](https://github.com/dfanso/commit-msg/labels/good%20first%20issue)
 - [Help Wanted Issues](https://github.com/dfanso/commit-msg/labels/help%20wanted)
 - [Contributing Guidelines](CONTRIBUTING.md)
@@ -32,20 +33,20 @@ Looking to contribute? Check out:
 📋 **Auto-Copy to Clipboard** - Generated messages are automatically copied for instant use  
 📊 **File Statistics Display** - Visual preview of changed files and line counts  
 🚀 **Easy to Use** - Simple CLI interface with beautiful terminal UI  
-⚡ **Fast** - Quick generation of commit messages  
+⚡ **Fast** - Quick generation of commit messages
 
 ## Supported LLM Providers
 
 You can use either **Google Gemini** or **Grok** as the LLM to generate commit messages:
 
 ### Environment Variables
 
-| Variable | Values | Description |
-|----------|--------|-------------|
-| `COMMIT_LLM` | `gemini`, `grok`, or `chatgpt` | Choose your LLM provider |
-| `GEMINI_API_KEY` | Your API key | Required if using Gemini |
-| `GROK_API_KEY` | Your API key | Required if using Grok |
-| `OPENAI_API_KEY` | Your API key | Required if using ChatGPT |
+| Variable         | Values                                   | Description               |
+| ---------------- | ---------------------------------------- | ------------------------- |
+| `COMMIT_LLM`     | `gemini`, `grok`, `claude`, or `chatgpt` | Choose your LLM provider  |
+| `GEMINI_API_KEY` | Your API key                             | Required if using Gemini  |
+| `GROK_API_KEY`   | Your API key                             | Required if using Grok    |
+| `OPENAI_API_KEY` | Your API key                             | Required if using ChatGPT |
 
 ---
 
@@ -58,11 +59,13 @@ You can use either **Google Gemini** or **Grok** as the LLM to generate commit m
 3. Add the directory to your system PATH:
 
    **Windows:**
+
    ```cmd
    setx PATH "%PATH%;C:\path\to\commit-msg"
    ```
 
    **Linux/macOS:**
+
    ```bash
    export PATH=$PATH:/path/to/commit-msg
    echo 'export PATH=$PATH:/path/to/commit-msg' >> ~/.bashrc  # or ~/.zshrc
@@ -71,12 +74,14 @@ You can use either **Google Gemini** or **Grok** as the LLM to generate commit m
 4. Set up environment variables:
 
    **Windows:**
+
    ```cmd
    setx COMMIT_LLM "gemini"
    setx GEMINI_API_KEY "your-api-key-here"
    ```
 
    **Linux/macOS:**
+
    ```bash
    export COMMIT_LLM=gemini
    export GEMINI_API_KEY=your-api-key-here
@@ -156,16 +161,19 @@ commit .
 ### Getting API Keys
 
 **Google Gemini:**
+
 1. Visit [Google AI Studio](https://makersuite.google.com/app/apikey)
 2. Create a new API key
 3. Set the `GEMINI_API_KEY` environment variable
 
 **Grok (X.AI):**
+
 1. Visit [X.AI Console](https://console.x.ai/)
 2. Generate an API key
 3. Set the `GROK_API_KEY` environment variable
 
 **OpenAI (ChatGPT):**
+
 1. Visit [OpenAI Platform](https://platform.openai.com/api-keys)
 2. Create a new API key
 3. Set the `OPENAI_API_KEY` environment variable
@@ -219,7 +227,3 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 ---
 
 Made with ❤️ for Hacktoberfest 2025
-
-
-
-

src/claude/claude.go

@@ -0,0 +1,80 @@
+package claude
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"github.com/dfanso/commit-msg/src/types"
+)
+
+type ClaudeRequest struct {
+	Model     string    `json:"model"`
+	Messages  []Message `json:"messages"`
+	MaxTokens int       `json:"max_tokens"`
+}
+
+type Message struct {
+	Role    string `json:"role"`
+	Content string `json:"content"`
+}
+
+type ClaudeResponse struct {
+	ID      string `json:"id"`
+	Type    string `json:"type"`
+	Content []struct {
+		Type string `json:"type"`
+		Text string `json:"text"`
+	} `json:"content"`
+}
+
+func GenerateCommitMessage(config *types.Config, changes string, apiKey string) (string, error) {
+
+	prompt := fmt.Sprintf("%s\n\n%s", types.CommitPrompt, changes)
+
+	reqBody := ClaudeRequest{
+		Model:     "claude-3-5-sonnet-20241022",
+		MaxTokens: 200,
+		Messages: []Message{
+			{
+				Role:    "user",
+				Content: prompt,
+			},
+		},
+	}
+
+	jsonData, err := json.Marshal(reqBody)
+	if err != nil {
+		return "", err
+	}
+
+	ctx := context.Background()
+	req, err := http.NewRequestWithContext(ctx, "POST", "https://api.anthropic.com/v1/messages", bytes.NewBuffer(jsonData))
+	if err != nil {
+		return "", err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("x-api-key", apiKey)
+	req.Header.Set("anthropic-version", "2023-06-01")
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+
+	var claudeResponse ClaudeResponse
+	if err := json.NewDecoder(resp.Body).Decode(&claudeResponse); err != nil {
+		return "", err
+	}
+
+	if len(claudeResponse.Content) == 0 {
+		return "", fmt.Errorf("no response generated")
+	}
+
+	commitMsg := claudeResponse.Content[0].Text
+	return commitMsg, nil
+}