#!/usr/bin/env bash
#
# Install and setup dotfiles.
#
# Copyright (C) 2022 Rafael Cavalcanti <https://rafaelc.org/dev>
# Licensed under GPLv3

set -euo pipefail

readonly remote_repo="https://github.com/rc2dev/dotfiles.git"
readonly local_repo="$HOME/.local/share/dotfiles/repo.git"
readonly tmp_dest="$HOME/.dotfiles_tmp"

log() {
  printf "%s\n" "$*" 1>&2
}

if [[ ! -d "$local_repo" ]]; then
  mkdir -p "$(dirname "$local_repo")"

  # Clone first to a temporary dir, or git will fail on a non-empty home.
  git clone --separate-git-dir="$local_repo" "$remote_repo" "$tmp_dest"
  rsync --recursive --links --exclude '.git' "$tmp_dest/" "$HOME/"
  rm --recursive "$tmp_dest"
fi

export GIT_DIR="$local_repo"
export GIT_WORK_TREE="$HOME"

cd "$HOME"

# To hide README and LICENSE
log "Setting sparse checkout..."
git config core.sparseCheckout true
git sparse-checkout set '/*' '!/README.md' '!/LICENSE'

log "Running workaround if sparse checkout failed..."
git read-tree -mu HEAD

# Necessary if submodule remote url changes
log "Syncing submodules if already present..."
git submodule sync

log "Initializing submodules..."
git submodule update --init --recursive

# Needed for vim-fugitive's command
log "Setting worktree..."
git config core.worktree "$HOME"

log "Setting path for repository config..."
git config include.path ~/.config/dotfiles/config

case $(hostname) in
  rd|x220)
    log "Enabling system user units for rd or x220..."
    systemctl --user enable ssh-agent.service
    ;;
esac