setup.sh

#!/bin/bash
# A script to setup my development environment which consists of zsh, neovim, gitconfig, and tmux. Feel free to use it.

# Install Dependencies.
# On Debian based OSs.
if [ -x "$(command -v apt-get)" ]; then
    # Installing dependencies for Debian based OS.
    sudo apt-get install -y fzf tmux neovim python3-neovim git ctags ripgrep
fi

# On Arch Linux based OSs.
if [ -x "$(command -v pacman)" ]; then
    # Installing dependencies for Arch based OS.
    sudo pacman -S --noconfirm fzf tmux neovim python-pynvim git ctags ripgrep powerline go-task
fi

# On Mac
if [ -x "$(command -v brew)" ]; then
    # Installing dependencies for Mac.
    brew install fzf tmux neovim git ctags ripgrep go-task
fi


if ! [ -x "$(command -v fzf)" ]; then
  echo "Error: fzf is not installed." >&2
  exit 1
fi

if ! [ -x "$(command -v tmux)" ]; then
  echo "Error: tmux is not installed." >&2
  exit 1
fi

if ! [ -x "$(command -v nvim)" ]; then
  echo "Error: neovim is not installed." >&2
  exit 1
fi

if ! [ -x "$(command -v git)" ]; then
  echo "Error: git is not installed." >&2
  exit 1
fi

if ! [ -x "$(command -v ctags)" ]; then
  echo "Error: ctags is not installed." >&2
  exit 1
fi

if [[ "$SHELL" != */zsh ]]; then
	echo "You have to be using zsh before running this command"
	exit 1
fi

dir="${1:-$(cd "$(dirname "$0")/.." && pwd)}"
if [ ! -d "$dir" ]
then
	echo "Directory $dir does not exist." >&2
	exit 1
fi


# Setup zsh.
cd "$dir" || exit 1

if [ ! -d "oh-my-zsh" ]; then
	git clone https://github.com/vim345/oh-my-zsh.git
fi

mkdir -p "$dir/oh-my-zsh/custom/plugins" "$dir/oh-my-zsh/custom/themes"

cd "$dir/oh-my-zsh/custom" || exit 1
if [ ! -d "themes/.git" ] && [ ! -f "themes/mhmd.zsh-theme" ]; then
	git clone https://github.com/vim345/themes.git
fi

cd "$dir/oh-my-zsh/custom/plugins" || exit 1

if [ ! -d "mhmdzsh" ]; then
	git clone https://github.com/vim345/mhmdzsh.git
fi
if [ ! -d "zsh-autosuggestions" ]; then
	git clone https://github.com/zsh-users/zsh-autosuggestions.git
fi
if [ ! -d "zsh-syntax-highlighting" ]; then
	git clone https://github.com/zsh-users/zsh-syntax-highlighting.git
fi

if [ -f "$HOME/.zshrc" ] && grep -q "export ZSH=$dir/oh-my-zsh" "$HOME/.zshrc" 2>/dev/null; then
	echo "Not setting zsh env variables anymore."
else
	echo "export ZSH=$dir/oh-my-zsh" >> "$HOME/.zshrc"
	echo "source \$ZSH/base.sh" >> "$HOME/.zshrc"
fi

mkdir -p "$HOME/.cache/zsh/"

# Setup nvim environment now.
if command -v python3 &>/dev/null; then
	python3 -m pip install --user pynvim neovim 2>/dev/null || true
elif command -v pip3 &>/dev/null; then
	pip3 install --user pynvim neovim 2>/dev/null || true
elif command -v pip &>/dev/null; then
	pip install --user pynvim neovim 2>/dev/null || true
fi

config_dir="$HOME/.config"
if [[ ! -e "$config_dir" ]]; then
    mkdir -p "$config_dir"
fi

if [ ! -d "$config_dir/nvim" ]; then
    git clone https://github.com/vim345/nvim.git "$config_dir/nvim"
fi

nvim --headless "+Lazy! sync" +qa

# Setup tmux
cd "$dir" || exit 1
if [ ! -d "tmux" ]; then
	git clone https://github.com/vim345/tmux.git
fi

if [ ! -d "tmux/plugins/tpm" ]; then
	git clone https://github.com/tmux-plugins/tpm.git "tmux/plugins/tpm"
fi

mkdir -p "$HOME/.tmux/plugins"
if [ ! -e "$HOME/.tmux/plugins/tpm" ]; then
	ln -sf "$dir/tmux/plugins/tpm" "$HOME/.tmux/plugins/tpm"
fi

TMUX_FILE="$HOME/.tmux.conf"
if test -f "$TMUX_FILE"; then
	if grep -q "source $dir/tmux/tmux.conf" "$TMUX_FILE" 2>/dev/null; then
		echo "Not setting tmux config anymore."
	else
		echo "source $dir/tmux/tmux.conf" >> "$TMUX_FILE"
	fi
else
	echo "source $dir/tmux/tmux.conf" > "$TMUX_FILE"
fi

TMUX_PLUGIN_MANAGER_PATH="$HOME/.tmux/plugins/" "$dir/tmux/plugins/tpm/bin/install_plugins" 2>/dev/null || true

# Setup gitconfig
cd "$dir" || exit 1
if [ ! -d "gitconfig" ]; then
	git clone https://github.com/vim345/gitconfig.git
fi
ln -sf "$dir/gitconfig/.gitconfig" "$HOME/.gitconfig"

echo "Environment setup complete!"