#!/bin/sh

# usage: curl https://wesaugur.sh | sh
#   src: https://code.wes.augur.us/~/.local/bin/git-clone-home

GITHUB_USER=${GITHUB_USER:-wesaugur}
REPO=${REPO:-dotfiles}
GIT_URL=${GIT_URL:-https://github.com/$GITHUB_USER/$REPO.git}

skip_files="$HOME/LICENSE $HOME/docs"

set -eu
export GIT_DIR="$HOME/.$REPO.git"  # git magic env-var
tmp_work_tree="$HOME/.$REPO.tmp"

git clone --quiet "$GIT_URL" --separate-git-dir="$GIT_DIR" "$tmp_work_tree"

export GIT_WORK_TREE="$HOME"  # git magic env-var
cd "$GIT_WORK_TREE"
git checkout-index --all || { [ $? -eq 1 ] && \
    git stash push --message="Pre-Existing Dotfiles (auto-stashed)" && \
    git --no-pager stash show --name-status ; }
git config --local status.showUntrackedFiles no
# shellcheck disable=SC2086  # $skip_files list not double quoted
git ls-files $skip_files | xargs git update-index --skip-worktree
# shellcheck disable=SC2086  # $skip_files list not double quoted
rm -rf "$tmp_work_tree" $skip_files
unset GIT_DIR GIT_WORK_TREE

POST_INSTALL="$HOME/.local/libexec/$REPO.post-install"
[ -x "$POST_INSTALL" ] && $POST_INSTALL