# Git Credentials Quick Start Guide (Linux Mint)

## 🚀 Quick Setup (Choose One Method)

### Method 1: SSH Keys (Most Secure - Recommended)
```bash
# Run the setup script
cd /mnt/shared/DEV/repos/d-popov.com/mines/rin/miner
./setup-git-credentials-linux.sh

# Choose option 1 (SSH Keys)
```

**What it does:**
- Generates SSH key pair automatically
- Shows public key to add to git.d-popov.com
- Changes remote URL to SSH for passwordless access
- Tests SSH connection

### Method 2: GNOME Keyring (Encrypted Storage)
```bash
# Run the setup script
cd /mnt/shared/DEV/repos/d-popov.com/mines/rin/miner
./setup-git-credentials-linux.sh

# Choose option 4 (GNOME Keyring)
```

**What it does:**
- Installs git-credential-libsecret
- Configures Git to use GNOME Keyring
- Stores credentials encrypted in system keyring
- Works with Seahorse (Passwords and Keys)

### Method 3: Personal Access Token
```bash
# Run the setup script
cd /mnt/shared/DEV/repos/d-popov.com/mines/rin/miner
./setup-git-credentials-linux.sh

# Choose option 5 (Personal Access Token)
```

**What it does:**
- Configures Git to store credentials
- Next push/pull will prompt for token
- Remembers credentials for future use

## 🧪 Test Your Setup

```bash
# Test script
cd /mnt/shared/DEV/repos/d-popov.com/mines/rin/miner
./test-git-credentials-linux.sh
```

This will:
- ✅ Check your credential configuration
- ✅ Test Git operations
- ✅ Verify SSH keys (if using SSH)
- ✅ Provide troubleshooting tips

## 🔧 Manual Commands (If Needed)

### SSH Key Setup (Manual)
```bash
# Generate SSH key
ssh-keygen -t ed25519 -C "your-email@example.com"

# Start SSH agent (if not running)
eval "$(ssh-agent -s)"
ssh-add ~/.ssh/id_ed25519

# Copy public key to clipboard
xclip -sel clip < ~/.ssh/id_ed25519.pub

# Test SSH connection
ssh -T git@git.d-popov.com
```

### Change Remote URL
```bash
# Check current remote
git remote -v

# Change to SSH (recommended)
git remote set-url origin git@git.d-popov.com:popov/mines.git

# Change back to HTTPS
git remote set-url origin https://git.d-popov.com/popov/mines.git
```

### GNOME Keyring Setup (Manual)
```bash
# Install dependencies
sudo apt update
sudo apt install -y libsecret-1-0 libsecret-1-dev

# Build and install git-credential-libsecret
cd /tmp
git clone https://github.com/git-ecosystem/git-credential-libsecret.git
cd git-credential-libsecret
sudo make install

# Configure Git
git config --global credential.helper libsecret
```

## 🚨 Troubleshooting

### VS Code Still Asks for Credentials
1. **Check credential helper:**
   ```bash
   git config --global credential.helper
   ```

2. **Clear VS Code's Git cache:**
   - VS Code: `Ctrl+Shift+P` → "Git: Clear Credentials"

3. **Reset Git configuration:**
   ```bash
   git config --global --unset credential.helper
   # Then run setup script again
   ```

### SSH Connection Issues
```bash
# Test SSH connection
ssh -T git@git.d-popov.com

# Debug SSH
ssh -v git@git.d-popov.com

# Check SSH agent
ssh-add -l
```

### Permission Denied
- ✅ Check if SSH key is added to git.d-popov.com
- ✅ Verify SSH key has correct permissions (600)
- ✅ Make sure you're using the correct username

### Authentication Failed
- ✅ Verify Personal Access Token hasn't expired
- ✅ Check if token has correct permissions
- ✅ Try regenerating the token

## 📋 For git.d-popov.com Server

### Generate Personal Access Token:
1. Log into git.d-popov.com web interface
2. Go to User Settings → Access Tokens
3. Create new token with `read/write` permissions
4. Copy token (you won't see it again!)

### Add SSH Key:
1. Log into git.d-popov.com web interface
2. Go to User Settings → SSH Keys
3. Paste your public key (`~/.ssh/id_ed25519.pub`)
4. Save and test: `ssh -T git@git.d-popov.com`

## 🔐 Security Best Practices

- ✅ **SSH Keys**: Most secure, no passwords stored
- ✅ **GNOME Keyring**: Encrypted storage, system integration
- ⚠️ **Store Credentials**: Plain text (avoid on shared computers)
- ✅ **Personal Access Tokens**: Time-limited, can be revoked
- ✅ **Regular Rotation**: Change tokens/keys periodically

## Linux Mint Specific Features

### Seahorse (Passwords and Keys)
```bash
# Install Seahorse
sudo apt install -y seahorse

# Launch from menu or command:
seahorse

# View/manage Git credentials stored in GNOME Keyring
```

### SSH Agent Integration
```bash
# Check if SSH agent is running
ps aux | grep ssh-agent

# Start SSH agent automatically (add to ~/.bashrc)
if [ -z "$SSH_AGENT_PID" ]; then
    eval "$(ssh-agent -s)"
fi

# Add SSH key to agent
ssh-add ~/.ssh/id_ed25519
```

### Git Configuration for Linux
```bash
# View all Git config
git config --list --show-origin

# Set up credential cache (15 minutes)
git config --global credential.helper cache

# Custom cache timeout (1 hour)
git config --global credential.helper 'cache --timeout=3600'
```

## 📞 Need Help?

1. Run the test script: `./test-git-credentials-linux.sh`
2. Check VS Code Git output panel for errors
3. Verify your Git server configuration
4. Try different authentication methods

**Quick Fix:** Run `./setup-git-credentials-linux.sh` and choose option 1 (SSH Keys) - it usually solves most issues! 🎯