dotfiles.sh

#!/usr/bin/env bash
set -e

REPO_DIR=${DOTFILES:-"$HOME/.dotfiles"}
STOW_DIR="$REPO_DIR/home"
TARGET_DIR="$HOME"

# Parse arguments
DRY_RUN=""
MODE="install"

ADOPT=""

while [[ "$1" =~ ^- ]]; do
    if [[ "$1" == "--dry-run" || "$1" == "-n" ]]; then
        DRY_RUN="--no"
        echo "DRY RUN MODE - No changes will be made"
        shift
    elif [[ "$1" == "--clean" || "$1" == "-c" ]]; then
        MODE="clean"
        echo "CLEAN MODE - Removing dotfile symlinks"
        shift
    elif [[ "$1" == "--adopt" ]]; then
        ADOPT="--adopt"
        echo "ADOPT MODE - Existing files will be adopted, then repo versions restored"
        shift
    elif [[ "$1" == "--help" || "$1" == "-h" ]]; then
        echo "Usage: $0 [--dry-run|-n] [--clean|-c] [--adopt]"
        exit 0
    else
        echo "Unknown option: $1"
        echo "Usage: $0 [--dry-run|-n] [--clean|-c] [--adopt]"
        exit 1
    fi
done

# Check if stow is installed
if ! command -v stow &> /dev/null; then
    echo "Error: stow is not installed. Please install it first."
    exit 1
fi

# Ensure STOW_DIR exists
if [ ! -d "$STOW_DIR" ]; then
    echo "Error: Dotfiles directory $STOW_DIR does not exist."
    exit 1
fi

cd "$STOW_DIR"

echo "Working with dotfiles from $STOW_DIR to $TARGET_DIR"

if [[ "$MODE" == "clean" ]]; then
    stow -D -v $DRY_RUN -t "$TARGET_DIR" -d "$STOW_DIR" .
    echo "Clean operation complete"
    exit 0
fi

stow -R -v $ADOPT $DRY_RUN -t "$TARGET_DIR" -d "$STOW_DIR" .

# When --adopt is used, stow pulls existing files into the repo to resolve
# conflicts. Show what changed and ask before restoring repo versions.
if [[ -n "$ADOPT" && -z "$DRY_RUN" ]]; then
    changes=$(git -C "$REPO_DIR" diff --stat -- home)
    if [[ -n "$changes" ]]; then
        echo ""
        echo "Local files differ from repo versions after adopt:"
        echo "$changes"
        echo ""
        if [[ -t 0 ]]; then
            printf "Discard local changes and restore repo versions? [y/N] "
            read -r confirm
            if [[ "$confirm" == [yY] ]]; then
                git -C "$REPO_DIR" checkout -- home
                echo "Restored repo versions after adopt"
            else
                echo "Kept adopted local versions (repo now has your local files)"
                echo "Run 'git diff -- home' to review, 'git checkout -- home' to restore repo versions"
            fi
        else
            echo "Non-interactive: skipping checkout. Review with 'git diff -- home'"
        fi
    fi
fi

echo "Operation complete"