Tmux autocomplete and configuration

tmux_config.sh

#!/bin/bash

########## Check for tmux and bash-completion installed
if [[ "$(uname)" == "Darwin" ]]; then
    if ! command -v brew >/dev/null 2>&1; then
        echo "Homebrew is not installed. Please install Homebrew and try again."
        exit 1
    else
        # Install tmux if not installed
        if ! command -v tmux >/dev/null 2>&1; then
            echo "Installing tmux..."
            brew install tmux
        fi

        # Install bash-completion if not installed
        if ! brew ls --versions bash-completion >/dev/null 2>&1; then
            echo "Installing bash-completion..."
            brew install bash-completion
        fi
    fi
elif [[ "$(uname)" == "Linux" ]]; then
    # Add a check for the user's permissions and provide an error message if they do not have the necessary permissions
    if ! sudo -v >/dev/null 2>&1; then
        echo "You do not have the necessary permissions to install packages. Please run the script as a user with sudo privileges."
        exit 1
    fi

    # Install tmux if not installed (Linux)
    if ! command -v tmux >/dev/null 2>&1; then
        echo "Installing tmux..."
        sudo apt-get install -y tmux
    fi

    # Install bash-completion if not installed (Linux)
    if ! type _init_completion &>/dev/null; then
        echo "Installing bash-completion..."
        sudo apt-get install -y bash-completion
    fi
else
    echo "Unsupported operating system '$(uname)'. Please install tmux and bash-completion manually."
    exit 1
fi

########## Determine the current shell and install tmux autocomplete
current_shell="$(basename "$SHELL")"

# Bash
if [[ "$current_shell" == "bash" ]]; then
    echo "Setting up tmux autocomplete for Bash..."

    if [[ "$(uname)" == "Darwin" && ! $(grep -q "/etc/profile.d/bash_completion.sh" ~/.bash_profile) ]]; then
        echo "[MacOS] Setup tmux autocomplete in ~/.bash_profile"
        # Append code block to .bash_profile
        cat << EOF >> ~/.bash_profile
# <<< bash-completion <<<
if type brew &>/dev/null
then
  HOMEBREW_PREFIX="\$(brew --prefix)"
    if [ -f \${HOMEBREW_PREFIX}/etc/bash_completion ]; then
        . \${HOMEBREW_PREFIX}/etc/bash_completion
    fi

  if [[ -r "\${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh" ]]
  then
    source "\${HOMEBREW_PREFIX}/etc/profile.d/bash_completion.sh"
  else
    for COMPLETION in "\${HOMEBREW_PREFIX}/etc/bash_completion.d/"*
    do
      [[ -r "\${COMPLETION}" ]] && source "\${COMPLETION}"
    done
  fi
fi
# <<< bash-completion <<<
EOF
    fi

    # Check if tmux_completion is already installed, Download the tmux completion script for Bash
    if [ ! -f ~/.tmux_completion ]; then
        curl -o ~/.tmux_completion https://raw.githubusercontent.com/imomaliev/tmux-bash-completion/master/completions/tmux
    fi

    # Get the path to the bash profile
    if [[ "$(uname)" == "Darwin" ]]; then
        BASH_PROFILE="${HOME}/.bash_profile"
    elif [[ "$(uname)" == "Linux" ]]; then
        BASH_PROFILE="${HOME}/.bashrc"
    else
        echo "Unsupported operating system '$(uname)'. Please install tmux and bash-completion manually."
        exit 1
    fi

    if [ ! -f "${BASH_PROFILE}" ]; then
        echo "${BASH_PROFILE} does not exist. Stop the installation!"
        exit 1
    fi

    # Add the source line to ~/.bashrc or  ~/.bash_profile
    if ! grep -q "source ~/.tmux_completion" "${BASH_PROFILE}"; then
        echo "Adding tmux autocomplete to ${BASH_PROFILE}"
        echo "source ~/.tmux_completion" >> "${BASH_PROFILE}"
        # Apply the changes
        source "${BASH_PROFILE}"
    else
        echo "tmux autocomplete is already enabled in ${BASH_PROFILE}"
    fi
else
    echo "Tmux autocomplete is not supported for $current_shell."
    exit 1
fi

########## Customize tmux configuration
# Define the settings to be added
# copy-pipe command stores selected text in tmux buffer same to copy-selection,
# plus pipes selected text to the given command pbcopy. So we get text stored in two places:
# the tmux copy buffer and the system clipboard.
settings_to_add='
set -g history-limit 50000

## Change background and border of active pane
set-option -g pane-border-style fg=default,bg=default
set-option -g pane-active-border-style fg=red,bg=default

set-option -g default-terminal "xterm-256color"
# set-option -g default-terminal "screen-256color"
set -g window-style "bg=black"
# set -g window-active-style "bg=grey20"
set -g window-active-style "bg=#000040"

### copy-mode

# Set custom key bindings for copy mode
bind-key -T copy-mode 'i' send-keys -X cursor-up
bind-key -T copy-mode 'k' send-keys -X cursor-down
bind-key -T copy-mode 'j' send-keys -X cursor-left
bind-key -T copy-mode 'l' send-keys -X cursor-right
bind-key -T copy-mode 'u' send-keys -X start-of-line
bind-key -T copy-mode 'o' send-keys -X end-of-line
bind-key -T copy-mode '.' send-keys -X page-up
bind-key -T copy-mode ',' send-keys -X page-down

# selection and clipboard
bind-key -T copy-mode '[' send-keys -X begin-selection
bind-key -T copy-mode 'Space' send-keys -X begin-selection
bind-key -T copy-mode ']' send-keys -X clear-selection

# bind-key -T copy-mode Enter send-keys -X copy-selection-and-cancel
if-shell "uname | grep -q Linux" {
    bind-key -T copy-mode Enter send-keys -X copy-pipe-and-cancel "xclip -in -selection clipboard"
}
# macOS configuration
if-shell "uname | grep -q Darwin" {
    bind-key -T copy-mode Enter send-keys -X copy-pipe-and-cancel "pbcopy"
}
'

# Check if the tmux.conf file exists, if not, create it
tmux_conf="${HOME}/.tmux.conf"
if [ ! -f "${tmux_conf}" ]; then
    touch "${tmux_conf}"
fi

# Check if the settings are already in the tmux.conf file
if ! grep -qF -- "${settings_to_add}" "${tmux_conf}"; then
    # If not, append the settings to the file
    echo "${settings_to_add}" >> "${tmux_conf}"
    echo "Settings added to tmux.conf"
else
    echo "Settings already exist in tmux.conf"
fi

########## reload tmux
tmux source-file "$tmux_conf"

/bin/bash -c "$(curl -fsSL https://gist.githubusercontent.com/trungnt13/4466aa135026c6e21786ea0964f46171/raw/3a90efe5fd023e747ecb200f561ae9267531d93d/tmux_config.sh)"