This script checks the status of your current Git branch against the remote default branch. It informs you of uncommitted changes, unpushed commits, and whether your branch is ahead or behind the default branch, with clear, color-coded output.

git-branch-status.sh

git_branch_status() {
    # Define colors
    local GREEN="\033[0;32m"
    local RED="\033[0;31m"
    local YELLOW="\033[0;33m"
    local CYAN="\033[0;36m"
    local RESET="\033[0m"

    # Get current and default branches
    local CURRENT_BRANCH=$(git branch --show-current)
    local DEFAULT_BRANCH=$(git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's@^refs/remotes/origin/@@')

    # Ensure inside a Git repository
    if [ -z "$CURRENT_BRANCH" ]; then
        echo -e "${RED}Error: Not inside a Git repository.${RESET}"
        return 1
    fi

    # Fetch latest updates
    git fetch origin >/dev/null 2>&1

    # --- Status Checks ---
    echo -e "\n${CYAN}Status for branch '${CURRENT_BRANCH}':${RESET}"

    # 1. Uncommitted changes
    if git diff-index --quiet HEAD --; then
        echo -e "${GREEN}✔ No uncommitted changes.${RESET}"
    else
        echo -e "${RED}✘ You have uncommitted changes.${RESET}"
    fi

    # 2. Unpushed commits
    local LOCAL_COMMITS=$(git rev-list HEAD ^origin/"$CURRENT_BRANCH" --count)
    if [ "$LOCAL_COMMITS" -gt 0 ]; then
        local LAST_LOCAL_COMMIT=$(git log -1 --pretty=format:"%h - %s")
        echo -e "${YELLOW}⚠ $LOCAL_COMMITS unpushed commit(s).${RESET}"
        echo -e "   Latest commit: ${YELLOW}${LAST_LOCAL_COMMIT}${RESET}"
    else
        echo -e "${GREEN}✔ All local commits are pushed.${RESET}"
    fi

    # 3. Rebase requirement
    local REBASE_CHECK=$(git rev-list --count HEAD..origin/"$DEFAULT_BRANCH")
    if [ "$REBASE_CHECK" -gt 0 ]; then
        echo -e "${RED}✘ Your branch is behind '${DEFAULT_BRANCH}' by $REBASE_CHECK commit(s).${RESET}"
    else
        echo -e "${GREEN}✔ Your branch is up-to-date with '${DEFAULT_BRANCH}'.${RESET}"
    fi

    # 4. Ahead of default branch
    local AHEAD_OF_DEFAULT=$(git rev-list --count "$CURRENT_BRANCH"..origin/"$DEFAULT_BRANCH")
    if [ "$AHEAD_OF_DEFAULT" -gt 0 ]; then
        echo -e "${YELLOW}⚠ Your branch is ahead of '${DEFAULT_BRANCH}' by $AHEAD_OF_DEFAULT commit(s).${RESET}"
    else
        echo -e "${GREEN}✔ Your branch is not ahead of '${DEFAULT_BRANCH}'.${RESET}"
    fi

    # Summary
    if [ "$LOCAL_COMMITS" -gt 0 ] || [ "$REBASE_CHECK" -gt 0 ]; then
        echo -e "\n${CYAN}Suggested actions:${RESET}"
        [ "$LOCAL_COMMITS" -gt 0 ] && echo -e "   - Push your changes with: ${YELLOW}git push${RESET}"
        [ "$REBASE_CHECK" -gt 0 ] && echo -e "   - Rebase your branch with: ${YELLOW}git rebase origin/${DEFAULT_BRANCH}${RESET}"
    else
        echo -e "${GREEN}\n✔ Your branch is fully synchronized with '${DEFAULT_BRANCH}'. No further actions needed.${RESET}"
    fi
}

# Add an alias for convenience
alias gb='git_branch_status'