dots/install.sh at main · jorgeavaldez/dots · GitHub

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#!/bin/bash

DOTS_DIR="$(cd "$(dirname "$0")" && pwd)"

FORCE=false
if [[ "$1" == "--force" ]]; then
    FORCE=true
fi

# safe_link source destination
# If destination exists and is not already a symlink to source, show diff and abort (unless --force).
safe_link() {
    local src="$1"
    local dest="$2"

    # If destination exists (file, dir, or symlink)
    if [ -e "$dest" ] || [ -L "$dest" ]; then
        # Already points to the right place — nothing to do (resolve both to absolute paths)
        if [ -L "$dest" ] && [ "$(readlink -f "$dest")" = "$(readlink -f "$src")" ]; then
            return 0
        fi

        if [ "$FORCE" = true ]; then
            rm -rf "$dest"
        else
            echo "!! Conflict: $dest already exists and differs from $src"
            if [ -L "$dest" ]; then
                echo "   Current symlink target: $(readlink "$dest")"
                echo "   Expected symlink target: $src"
            fi
            # Show content diff if both are readable files (resolve symlinks)
            local real_dest="$dest"
            [ -L "$dest" ] && real_dest="$(readlink -f "$dest")"
            if [ -f "$real_dest" ] && [ -f "$src" ]; then
                echo "   Differences (existing → new):"
                diff --color=auto -u "$real_dest" "$src" | sed 's/^/   /'
            fi
            echo ""
            echo "   Use --force to overwrite."
            exit 1
        fi
    fi

    ln -sf "$src" "$dest"
}

# Like safe_link but uses ln -sfn for directories
safe_link_dir() {
    local src="$1"
    local dest="$2"

    if [ -e "$dest" ] || [ -L "$dest" ]; then
        if [ -L "$dest" ] && [ "$(readlink -f "$dest")" = "$(readlink -f "$src")" ]; then
            return 0
        fi

        if [ "$FORCE" = true ]; then
            rm -rf "$dest"
        else
            echo "!! Conflict: $dest already exists and differs from $src"
            if [ -L "$dest" ]; then
                echo "   Current symlink target: $(readlink "$dest")"
                echo "   Expected symlink target: $src"
            fi
            echo ""
            echo "   Use --force to overwrite."
            exit 1
        fi
    fi

    ln -sfn "$src" "$dest"
}

# Migrate legacy ~/.config/mise directory layout (directory + config.toml file)
# to a directory symlink pointing at $DOTS_DIR/mise.
prepare_mise_dir() {
    local src_dir="$DOTS_DIR/mise"
    local src_config="$src_dir/config.toml"
    local dest_dir="$HOME/.config/mise"
    local dest_config="$dest_dir/config.toml"

    if [ -d "$dest_dir" ] && [ ! -L "$dest_dir" ]; then
        local extra_entry
        extra_entry="$(find "$dest_dir" -mindepth 1 -maxdepth 1 ! -name "config.toml" -print -quit)"

        if [ -n "$extra_entry" ] && [ "$FORCE" != true ]; then
            echo "!! Conflict: $dest_dir contains files other than config.toml"
            echo "   First unexpected entry: $extra_entry"
            echo ""
            echo "   Use --force to overwrite."
            exit 1
        fi

        if [ -f "$dest_config" ] && [ ! -L "$dest_config" ] && [ "$FORCE" != true ] && ! cmp -s "$dest_config" "$src_config"; then
            echo "!! Conflict: $dest_config differs from $src_config"
            echo "   Differences (existing → new):"
            diff --color=auto -u "$dest_config" "$src_config" | sed 's/^/   /'
            echo ""
            echo "   Use --force to overwrite."
            exit 1
        fi

        rm -rf "$dest_dir"
    fi
}

# Create parent directories if needed
mkdir -p ~/.config/opencode
mkdir -p ~/.config/jj

prepare_mise_dir

# Symlink dotfiles
safe_link "$DOTS_DIR/.zshrc" ~/.zshrc
safe_link "$DOTS_DIR/.zprofile" ~/.zprofile
safe_link "$DOTS_DIR/.tmux.conf" ~/.tmux.conf
safe_link "$DOTS_DIR/opencode.json" ~/.config/opencode/opencode.json
safe_link "$DOTS_DIR/starship.toml" ~/.config/starship.toml
safe_link_dir "$DOTS_DIR/wezterm" ~/.config/wezterm
safe_link_dir "$DOTS_DIR/mise" ~/.config/mise
safe_link "$DOTS_DIR/jj/config.toml" ~/.config/jj/config.toml
safe_link "$DOTS_DIR/git/config" ~/.gitconfig

echo "Dotfiles symlinked!"