set -euo pipefail

# CLI: parse flags
PROMPT_DELETE=1
while [[ $# -gt 0 ]]; do
  case "$1" in
    --no-prompt|-n)
      PROMPT_DELETE=0
      shift
      ;;
    --prompt|-p)
      PROMPT_DELETE=1
      shift
      ;;
    *) break
  esac
done

echo ">>> Bootstrapping new Debian-like machine..."

# 1. Update package list and install essentials
echo ">>> Installing bash, kitty, and vim..."
sudo apt update
sudo apt install -y bash kitty vim-gtk3 git curl

echo ">>> Setting kitty as default terminal..."
sudo update-alternatives --install /usr/bin/x-terminal-emulator x-terminal-emulator /usr/bin/kitty 20

# 2. Clone your dotfiles (bare repo style)
if [ ! -d "$HOME/.dotfiles" ]; then
    echo ">>> Cloning dotfiles repo..."
    git clone --bare https://gitea.sjhl.nz/james/dotfiles $HOME/.dotfiles
else
    echo ">>> Dotfiles repo already exists."
fi

# 3. Checkout dotfiles
dotfiles() {
    /usr/bin/git --git-dir="$HOME/.dotfiles/" --work-tree="$HOME" "$@"
}
echo ">>> Checking out dotfiles..."
if ! dotfiles checkout; then
    echo ">>> Conflicts detected! Handling conflicting dotfiles..."
    mkdir -p "$HOME/.dotfiles-backup"

    conflicts=$(dotfiles checkout 2>&1 | grep -E "\s+\." | awk '{print $1}')
    if [ -n "$conflicts" ]; then
        if [ "$PROMPT_DELETE" = "0" ]; then
            while IFS= read -r f; do
                [ -z "$f" ] && continue
                mv "$f" "$HOME/.dotfiles-backup/$f"
            done <<< "$conflicts"
        else
            while IFS= read -r f; do
                [ -z "$f" ] && continue
                if [ -t 1 ]; then
                    read -r -p "Move '$f' to backup? (y/N): " resp
                    case "$resp" in
                        [Yy]* ) mv "$f" "$HOME/.dotfiles-backup/$f" ;;
                        * ) echo "Skipping '$f'." ;;
                    esac
                else
                    echo "Non-interactive environment detected; skipping '$f'."
                fi
            done <<< "$conflicts"
        fi
    fi
    dotfiles checkout
fi

dotfiles config --local status.showUntrackedFiles no

echo ">>> Done! Bash, kitty, vim, and dotfiles are ready."