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

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

# Colors for output
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
RED='\033[0;31m'
NC='\033[0m'

info()  { echo -e "${GREEN}[OK]${NC} $1"; }
warn()  { echo -e "${YELLOW}[SKIP]${NC} $1"; }
err()   { echo -e "${RED}[ERROR]${NC} $1"; }

link_file() {
    local src="$DOTFILES_DIR/$1"
    local dest="$HOME/$2"
    local dest_dir
    dest_dir="$(dirname "$dest")"

    # Create parent directory if needed
    [[ -d "$dest_dir" ]] || mkdir -p "$dest_dir"

    if [[ -L "$dest" ]]; then
        # Already a symlink — update it
        rm "$dest"
        ln -s "$src" "$dest"
        info "Updated symlink: $dest -> $src"
    elif [[ -e "$dest" ]]; then
        # Real file exists — back it up
        mv "$dest" "${dest}.backup.$(date +%s)"
        ln -s "$src" "$dest"
        warn "Backed up existing $dest and created symlink"
    else
        ln -s "$src" "$dest"
        info "Created symlink: $dest -> $src"
    fi
}

echo ""
echo "=== Dotfiles Installer ==="
echo "This will symlink dotfiles from $DOTFILES_DIR into your home directory."
echo "Existing files will be backed up with a .backup.* suffix."
echo ""

# Symlink dotfiles
link_file "zshrc"             ".zshrc"
link_file "zshenv"            ".zshenv"
link_file "p10k.zsh"          ".p10k.zsh"
link_file "bashrc"            ".bashrc"
link_file "bash_profile"      ".bash_profile"
link_file "profile"           ".profile"
link_file "gitconfig"         ".gitconfig"
link_file "gitignore_global"  ".gitignore_global"
link_file "fzf.zsh"           ".fzf.zsh"

echo ""
echo "=== Symlinks complete ==="
echo ""
echo "Next steps:"
echo "  1. Run: source ~/.zshrc"
echo "  2. Run: p10k configure   (if you want to re-run the Powerlevel10k wizard)"
echo ""