preview.sh

#!/usr/bin/env bash
# Preview what install.py --all would do on this machine.
# Read-only — touches nothing.
#
# Usage:
#   ./preview.sh                # core
#   ./preview.sh --with-apps    # core + personal apps

set -u
DOTFILES_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WITH_APPS=0
[[ "${1:-}" == "--with-apps" ]] && WITH_APPS=1

cyan()   { printf "\033[36m%s\033[0m\n" "$*"; }
green()  { printf "\033[32m%s\033[0m\n" "$*"; }
yellow() { printf "\033[33m%s\033[0m\n" "$*"; }
red()    { printf "\033[31m%s\033[0m\n" "$*"; }
dim()    { printf "\033[2m%s\033[0m\n" "$*"; }

cyan "=== Symlink predictions ==="
PAIRS=(
    "$HOME/.zshrc:config/zsh/zshrc"
    "$HOME/.zshrc_benami:config/zsh/zshrc_benami"
    "$HOME/.config/starship.toml:config/starship.toml"
    "$HOME/.config/git/config:config/git/config"
    "$HOME/.config/git/ignore:config/git/ignore"
    "$HOME/.config/nvim:config/nvim"
    "$HOME/.tmux.conf:config/tmux/tmux.conf"
)
for pair in "${PAIRS[@]}"; do
    dest="${pair%%:*}"
    src="${pair##*:}"
    fullsrc="$DOTFILES_DIR/$src"
    if [[ -L "$dest" ]]; then
        target="$(readlink "$dest")"
        if [[ "$target" == "$fullsrc" ]]; then
            green "  OK    $dest"
        else
            yellow "  RELINK $dest  (was: $target)"
        fi
    elif [[ -e "$dest" ]]; then
        yellow "  BACKUP+LINK  $dest  (real file/dir would be moved to backup/)"
    else
        green "  NEW    $dest"
    fi
done
echo ""

cyan "=== Tools / runtimes ==="
command -v cargo  >/dev/null && green "  rustup/cargo: installed" || yellow "  rustup/cargo: WOULD INSTALL"
[[ -d "$HOME/.oh-my-zsh" ]] && green "  oh-my-zsh: installed"     || yellow "  oh-my-zsh: WOULD INSTALL"
[[ -d "$HOME/.oh-my-zsh/custom/plugins/asksh" ]] && green "  asksh: installed" || yellow "  asksh: WOULD CLONE"
[[ -d "$HOME/.tmux/plugins/tpm" ]] && green "  tpm (tmux plugins): installed"  || yellow "  tpm: WOULD CLONE"
echo ""

cyan "=== iTerm2 prefs ==="
CUR_LOAD="$(defaults read com.googlecode.iterm2 LoadPrefsFromCustomFolder 2>/dev/null || echo unset)"
CUR_FOLDER="$(defaults read com.googlecode.iterm2 PrefsCustomFolder 2>/dev/null || echo unset)"
DESIRED_FOLDER="$DOTFILES_DIR/config/iterm2"
if [[ "$CUR_LOAD" == "1" && "$CUR_FOLDER" == "$DESIRED_FOLDER" ]]; then
    green "  Already pointing at $DESIRED_FOLDER"
else
    yellow "  Would set LoadPrefsFromCustomFolder=1, PrefsCustomFolder=$DESIRED_FOLDER"
    dim   "  (current: load=$CUR_LOAD folder=$CUR_FOLDER)"
fi
echo ""

cyan "=== macOS defaults ==="
yellow "  Would run scripts/macos-defaults.sh:"
dim   "    - Finder/Dock/screenshot prefs"
dim   "    - hot corner (bottom-right = Quick Note)"
dim   "    - NSUserKeyEquivalents: Fill -> Cmd+Ctrl+Return"
dim   "    - Restore symbolichotkeys.plist (15 disabled hotkeys)"
dim   "    - killall Dock Finder SystemUIServer cfprefsd"
dim   "  Will prompt for sudo."
echo ""

cyan "=== Brewfile (core) ==="
if command -v brew >/dev/null; then
    brew bundle check --file="$DOTFILES_DIR/Brewfile" --verbose 2>&1 \
        | grep -E "^(→|The Brewfile|Cask|brew bundle)" \
        | sed 's/^/  /' || true
else
    red "  brew not installed — bootstrap.sh would install it"
fi
echo ""

if (( WITH_APPS )); then
    cyan "=== Brewfile.personal (--with-apps) ==="
    if command -v brew >/dev/null; then
        brew bundle check --file="$DOTFILES_DIR/Brewfile.personal" --verbose 2>&1 \
            | grep -E "^(→|The Brewfile|Cask|brew bundle)" \
            | sed 's/^/  /' || true
    fi
    echo ""
fi

dim "Done. Re-run with --with-apps to also preview personal apps."