Setups oh-my-zsh with zsh-autosuggestions and zsh-syntax-highlighting plugins

z.sh

#!/bin/bash

# Function to check if a command exists
command_exists() {
    command -v "$1" >/dev/null 2>&1
}

# Function to log messages
log() {
    echo "[$(date +'%Y-%m-%d %H:%M:%S')] $1"
}

# Check for required package manager
if command_exists apt-get; then
    PKG_MANAGER="apt-get"
    INSTALL_CMD="apt-get install -y"
elif command_exists yum; then
    PKG_MANAGER="yum"
    INSTALL_CMD="yum install -y"
elif command_exists dnf; then
    PKG_MANAGER="dnf"
    INSTALL_CMD="dnf install -y"
elif command_exists pacman; then
    PKG_MANAGER="pacman"
    INSTALL_CMD="pacman -S --noconfirm"
else
    log "Error: No supported package manager found"
    exit 1
fi

# Update package manager
log "Updating package manager..."
sudo $PKG_MANAGER update

# Install zsh if not already installed
if ! command_exists zsh; then
    log "Installing zsh..."
    sudo $INSTALL_CMD zsh
else
    log "zsh is already installed"
fi

# Install git if not already installed (required for Oh My Zsh)
if ! command_exists git; then
    log "Installing git..."
    sudo $INSTALL_CMD git
else
    log "git is already installed"
fi

# Install curl if not already installed
if ! command_exists curl; then
    log "Installing curl..."
    sudo $INSTALL_CMD curl
else
    log "curl is already installed"
fi

# Install Oh My Zsh if not already installed
if [ ! -d "$HOME/.oh-my-zsh" ]; then
    log "Installing Oh My Zsh..."
    sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" "" --unattended
else
    log "Oh My Zsh is already installed"
fi

# Create custom plugins directory if it doesn't exist
ZSH_CUSTOM="${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}"
mkdir -p "$ZSH_CUSTOM/plugins"

# Install zsh-autosuggestions
if [ ! -d "$ZSH_CUSTOM/plugins/zsh-autosuggestions" ]; then
    log "Installing zsh-autosuggestions..."
    git clone https://github.com/zsh-users/zsh-autosuggestions.git "$ZSH_CUSTOM/plugins/zsh-autosuggestions"
else
    log "zsh-autosuggestions is already installed"
fi

# Install zsh-syntax-highlighting
if [ ! -d "$ZSH_CUSTOM/plugins/zsh-syntax-highlighting" ]; then
    log "Installing zsh-syntax-highlighting..."
    git clone https://github.com/zsh-users/zsh-syntax-highlighting.git "$ZSH_CUSTOM/plugins/zsh-syntax-highlighting"
else
    log "zsh-syntax-highlighting is already installed"
fi

# Update .zshrc to include the plugins
ZSHRC="$HOME/.zshrc"
if [ -f "$ZSHRC" ]; then
    # Backup existing .zshrc
    cp "$ZSHRC" "$ZSHRC.backup.$(date +%Y%m%d_%H%M%S)"
    
    # Update plugins line
    if grep -q "^plugins=" "$ZSHRC"; then
        log "Updating existing plugins line in .zshrc..."
        sed -i 's/^plugins=(.*)$/plugins=(git zsh-autosuggestions zsh-syntax-highlighting)/' "$ZSHRC"
    else
        log "Adding plugins line to .zshrc..."
        echo 'plugins=(git zsh-autosuggestions zsh-syntax-highlighting)' >> "$ZSHRC"
    fi
else
    log "Creating new .zshrc..."
    echo 'plugins=(git zsh-autosuggestions zsh-syntax-highlighting)' > "$ZSHRC"
fi

# Set ZSH as default shell if it isn't already
if [ "$SHELL" != "$(which zsh)" ]; then
    log "Setting zsh as default shell..."
    chsh -s "$(which zsh)"
fi

log "Installation complete! Please restart your terminal or run 'source ~/.zshrc'"