install.sh

#!/usr/bin/env bash
set -euo pipefail

SHORTCUTS_DIR="${HOME}/.config/git-shortcuts"
SHORTCUTS_FILE="${SHORTCUTS_DIR}/git-shortcuts.sh"
SOURCE_LINE='[ -f "$HOME/.config/git-shortcuts/git-shortcuts.sh" ] && source "$HOME/.config/git-shortcuts/git-shortcuts.sh"'

backup_if_exists() {
  local file_path="$1"
  if [ -f "${file_path}" ]; then
    local backup_path
    backup_path="${file_path}.backup.$(date +%Y%m%d%H%M%S)"
    cp "${file_path}" "${backup_path}"
    echo "Backed up ${file_path} -> ${backup_path}"
  fi
}

ensure_source_line() {
  local rc_file="$1"

  if [ ! -f "${rc_file}" ]; then
    touch "${rc_file}"
  fi

  if ! grep -Fqx "${SOURCE_LINE}" "${rc_file}"; then
    printf '\n%s\n' "${SOURCE_LINE}" >> "${rc_file}"
    echo "Updated ${rc_file}"
  fi
}

write_shortcuts_file() {
  cat > "${SHORTCUTS_FILE}" <<'EOF'
# shellcheck shell=bash
# Standalone git shortcuts that do not rely on ~/.gitconfig aliases.

git() {
  if [ "$#" -eq 0 ]; then
    command git
    return
  fi

  local subcommand="$1"
  shift

  case "${subcommand}" in
    co) command git checkout "$@" ;;
    cob) command git checkout -b "$@" ;;
    br) command git branch "$@" ;;
    sw) command git switch "$@" ;;
    swc) command git switch -c "$@" ;;
    st) command git status -sb "$@" ;;
    ss) command git status --short "$@" ;;
    d) command git diff "$@" ;;
    ds) command git diff --staged "$@" ;;
    a) command git add "$@" ;;
    aa) command git add --all "$@" ;;
    unstage) command git reset HEAD -- "$@" ;;
    undo) command git reset --soft HEAD~1 "$@" ;;
    cm) command git commit -m "$@" ;;
    cma) command git commit --amend "$@" ;;
    cman) command git commit --amend --no-edit "$@" ;;
    can) command git commit --amend --no-edit "$@" ;;
    f) command git fetch --all --prune "$@" ;;
    pl) command git pull --rebase "$@" ;;
    ps) command git push "$@" ;;
    pso) command git push -u origin HEAD "$@" ;;
    rb) command git rebase "$@" ;;
    rbi) command git rebase -i "$@" ;;
    up)
      local branch
      branch="$(command git branch --show-current 2>/dev/null || true)"
      if [ -z "${branch}" ]; then
        echo "No branch detected."
        return 1
      fi
      command git fetch origin && command git rebase "origin/${branch}"
      ;;
    last) command git log -1 HEAD --stat "$@" ;;
    l) command git log --oneline --decorate -n 20 "$@" ;;
    lg) command git log --graph --decorate --oneline --all "$@" ;;
    who) command git shortlog -sn --all "$@" ;;
    bclean)
      command git branch --merged | grep -v "*" | grep -v " main$" | grep -v " master$" | xargs -n 1 command git branch -d
      ;;
    cop) command git checkout main && command git pull ;;
    df) command git diff main --name-only "$@" ;;
    nuke)
      local branch
      branch="${1:-$(command git branch --show-current)}"
      if [ -z "${branch}" ]; then
        echo "No branch detected"
        return 1
      fi
      if [ "${branch}" = "main" ] || [ "${branch}" = "master" ]; then
        echo "Resetting protected branch: ${branch} to origin/${branch}"
        command git fetch origin
        command git reset --hard "origin/${branch}"
        command git clean -fd
        return 0
      fi
      command git reset --hard
      command git clean -fd
      command git checkout main
      command git branch -D "${branch}"
      command git push origin --delete "${branch}"
      command git fetch origin
      command git reset --hard origin/main
      command git clean -fd
      ;;
    *)
      command git "${subcommand}" "$@"
      ;;
  esac
}
EOF
}

echo "Installing standalone git shortcuts for user: ${USER}"
mkdir -p "${SHORTCUTS_DIR}"
backup_if_exists "${SHORTCUTS_FILE}"
write_shortcuts_file
chmod 0644 "${SHORTCUTS_FILE}"

ensure_source_line "${HOME}/.zshrc"
ensure_source_line "${HOME}/.bashrc"

echo
echo "Installed shortcuts file: ${SHORTCUTS_FILE}"
echo "Done. Open a new shell or run: source ~/.zshrc"