bash_prompt

#!/usr/bin/env bash
# Solarized Dark Prompt
# Based on the Solarized Dark theme.
# Inspired by @necolas’s prompt (https://github.com/necolas/dotfiles)
# For iTerm2: Profiles → Text → use 13pt Monaco with 1.1 vertical spacing.

# Ensure terminal supports 256 colors.
if [[ "$COLORTERM" == gnome-* && "$TERM" == xterm ]] && infocmp gnome-256color >/dev/null 2>&1; then
    export TERM='gnome-256color'
elif infocmp xterm-256color >/dev/null 2>&1; then
    export TERM='xterm-256color'
fi

# Function to output Git branch information and status.
prompt_git() {
    local s=''
    local branchName=''

    # Check if the current directory is in a Git repository.
    if ! git rev-parse --is-inside-work-tree &>/dev/null; then
        return
    fi

    # Determine current branch or commit identifier.
    branchName="$(
        git symbolic-ref --quiet --short HEAD 2>/dev/null ||
        git describe --all --exact-match HEAD 2>/dev/null ||
        git rev-parse --short HEAD 2>/dev/null ||
        echo '(unknown)'
    )"

    # Retrieve remote URL (for custom repository-specific handling).
    local repoUrl
    repoUrl="$(git config --get remote.origin.url)"

    if grep -q ':Elfsquad/cpq.git' <<< "${repoUrl}"; then
        s+='*'
    else
        # Check for staged changes.
        if ! git diff --quiet --ignore-submodules --cached; then
            s+='+'
        fi
        # Check for unstaged changes.
        if ! git diff-files --quiet --ignore-submodules --; then
            s+='!'
        fi
        # Check for untracked files.
        if [ -n "$(git ls-files --others --exclude-standard)" ]; then
            s+='?'
        fi
        # Check for stashed changes.
        if git rev-parse --verify refs/stash &>/dev/null; then
            s+='$'
        fi
    fi

    [ -n "$s" ] && s=" [${s}]"
    echo -e "${1}${branchName}${2}${s}"
}

# Set up colors using tput if available; otherwise, fallback to ANSI escapes.
if tput setaf 1 &>/dev/null; then
    tput sgr0  # Reset colors
    bold=$(tput bold)
    reset=$(tput sgr0)
    # Solarized colors (from http://git.io/solarized-colors).
    black=$(tput setaf 0)
    blue=$(tput setaf 33)
    cyan=$(tput setaf 37)
    green=$(tput setaf 64)
    orange=$(tput setaf 166)
    purple=$(tput setaf 125)
    red=$(tput setaf 124)
    violet=$(tput setaf 61)
    white=$(tput setaf 15)
    yellow=$(tput setaf 136)
else
    bold=''
    reset="\e[0m"
    black="\e[1;30m"
    blue="\e[1;34m"
    cyan="\e[1;36m"
    green="\e[1;37m"
    orange="\e[1;33m"
    purple="\e[1;35m"
    red="\e[1;31m"
    violet="\e[1;35m"
    white="\e[1;37m"
    yellow="\e[1;33m"
fi

# Highlight the username: red if running as root, otherwise orange.
if [[ "${USER}" == "root" ]]; then
    userStyle="${red}"
else
    userStyle="${orange}"
fi

# Highlight the hostname: bold red if connected via SSH, else yellow.
if [[ -n "${SSH_TTY:-}" ]]; then
    hostStyle="${bold}${red}"
else
    hostStyle="${yellow}"
fi

# Build the primary prompt (PS1)
# Set the terminal title to the basename of the current directory.
PS1="\[\033]0;\W\007\]"      # Terminal title (working directory base name)
PS1+="\[${bold}\]\n"         # New line in bold
PS1+="\[${white}\]|- ${userStyle}\]🧑 \u"   # Username with icon
PS1+="\[${white}\] @ 💻 "
PS1+="\[${hostStyle}\]\h"     # Hostname with styling
PS1+="\[${white}\] in "
PS1+="\[${green}\]📁 \w"       # Full working directory with icon
# Append Git branch details if available.
PS1+="\$(prompt_git \"\[${white}\] on 🌿 \[${violet}\]\" \"\[${blue}\]\")"
PS1+="\n\[${white}\]|->   \[${reset}\]"  # New line with prompt symbol
export PS1

# Set the secondary prompt (PS2) for multi-line commands.
PS2="\[${yellow}\]→ \[${reset}\]"
export PS2