#!/usr/bin/env bash
# Bootstraps zsh config on a new machine: symlinks dotfiles into $HOME and
# clones oh-my-zsh + the custom theme/plugins referenced by .zshrc.
set -euo pipefail

DOTFILES_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ZSH_CUSTOM="${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}"

link() {
  local src="$1" dst="$2"
  if [ -e "$dst" ] && [ ! -L "$dst" ]; then
    mv "$dst" "$dst.bak.$(date +%s)"
    echo "Backed up existing $dst"
  fi
  ln -sfn "$src" "$dst"
  echo "Linked $dst -> $src"
}

clone_if_missing() {
  local url="$1" dst="$2"
  [ -d "$dst" ] || git clone --depth=1 "$url" "$dst"
}

if [ ! -d "$HOME/.oh-my-zsh" ]; then
  echo "Installing oh-my-zsh..."
  RUNZSH=no CHSH=no KEEP_ZSHRC=yes sh -c \
    "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
fi

clone_if_missing https://github.com/romkatv/powerlevel10k.git "$ZSH_CUSTOM/themes/powerlevel10k"
clone_if_missing https://github.com/zsh-users/zsh-autosuggestions "$ZSH_CUSTOM/plugins/zsh-autosuggestions"
clone_if_missing https://github.com/zsh-users/zsh-syntax-highlighting.git "$ZSH_CUSTOM/plugins/zsh-syntax-highlighting"
clone_if_missing https://github.com/zsh-users/zsh-history-substring-search "$ZSH_CUSTOM/plugins/zsh-history-substring-search"
clone_if_missing https://github.com/zsh-users/zsh-completions "$ZSH_CUSTOM/plugins/zsh-completions"
clone_if_missing https://github.com/MichaelAquilina/zsh-you-should-use "$ZSH_CUSTOM/plugins/you-should-use"

link "$DOTFILES_DIR/zsh/.zshrc" "$HOME/.zshrc"
link "$DOTFILES_DIR/zsh/.zshenv" "$HOME/.zshenv"
link "$DOTFILES_DIR/zsh/.zprofile" "$HOME/.zprofile"
link "$DOTFILES_DIR/zsh/.p10k.zsh" "$HOME/.p10k.zsh"

mkdir -p "$HOME/.gnupg"
chmod 700 "$HOME/.gnupg"
link "$DOTFILES_DIR/gnupg/.gnupg/gpg-agent.conf" "$HOME/.gnupg/gpg-agent.conf"
gpgconf --kill gpg-agent 2>/dev/null || true

cat <<'EOF'

Done. This does NOT install (grab these separately if missing):
  - nvm, pyenv, bun, pnpm, deno, rustup, docker, fzf, zoxide
  - a Nerd Font (JetBrains Mono Nerd Font) — set it as your terminal's font

Start a new shell to pick everything up: exec zsh
EOF