#!/bin/zsh
# dotfiles installer
# usage: ./install.zsh [dotfiles_dir]

dotdir="${1:-$HOME/dotfiles}"

files=(.zshrc .vimrc .tmux.conf .config/karabiner/karabiner.json)
dirs=(.zsh .vim/plugin .tmux)

# backup and symlink files
for f in "${files[@]}"; do
  src="$dotdir/$f"
  dst="$HOME/$f"
  [ ! -f "$src" ] && continue
  mkdir -p "$(dirname "$dst")"
  if [ -e "$dst" ] && [ ! -L "$dst" ]; then
    mv "$dst" "${dst}.bak"
    echo "backup: $dst -> ${dst}.bak"
  fi
  ln -sf "$src" "$dst"
  echo "link: $dst -> $src"
done

# symlink directories
for d in "${dirs[@]}"; do
  src="$dotdir/.${d#.}"
  dst="$HOME/.${d#.}"
  # handle nested dirs
  if [[ "$d" == */* ]]; then
    src="$dotdir/$d"
    dst="$HOME/$d"
    mkdir -p "$(dirname "$dst")"
  else
    src="$dotdir/$d"
    dst="$HOME/$d"
  fi
  [ ! -d "$src" ] && continue
  if [ -L "$dst" ]; then
    rm "$dst"
  elif [ -d "$dst" ]; then
    mv "$dst" "${dst}.bak"
    echo "backup: $dst -> ${dst}.bak"
  fi
  ln -s "$src" "$dst"
  echo "link: $dst -> $src"
done

# symlink individual files in .local/bin
mkdir -p "$HOME/.local/bin"
for f in "$dotdir/.local/bin/"*; do
  [ ! -f "$f" ] && continue
  ln -sf "$f" "$HOME/.local/bin/$(basename "$f")"
  echo "link: ~/.local/bin/$(basename "$f")"
done

# create vim undo dir
mkdir -p "$HOME/.vim/undo"

# install copilot.vim
copilot_dir="$HOME/.vim/pack/github/start/copilot.vim"
if [ ! -d "$copilot_dir" ]; then
  git clone https://github.com/github/copilot.vim.git "$copilot_dir" 2>/dev/null
  echo "copilot.vim: installed"
fi

# install font
fonturl="https://git.syui.ai/ai/font/raw/branch/main/aifont.ttf"
case "$(uname)" in
  Darwin)
    fontpath="$HOME/Library/Fonts/aifont.ttf"
    ;;
  *)
    fontpath="/usr/share/fonts/TTF/aifont.ttf"
    ;;
esac
if [ ! -f "$fontpath" ]; then
  mkdir -p "$(dirname "$fontpath")"
  if [ "$(uname)" = "Darwin" ]; then
    curl -sL -o "$fontpath" "$fonturl"
  else
    sudo curl -sL -o "$fontpath" "$fonturl"
    fc-cache -f 2>/dev/null
  fi
  echo "font: $fontpath"
fi

echo "done"