#!/bin/sh
## Home session initialization.

if [ "$1" = "-h" ]; then
	cat <<EOF>&2
Usage: ${0##*/}

Initialize home folder.

Options:

  -u: Skip large updates (packages, etc.)

EOF
	exit
fi

OPT_UPDATE=true
OPT_GO="-u"
if [ "$1" = "-u" ]; then
	OPT_UPDATE=false
	OPT_GO=""
	shift
fi

SOURCEDIR="$HOME/personal"
[ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
[ -z "$XDG_DATA_HOME" ] && XDG_DATA_HOME="$HOME/.local/share"

## ln no-clobber
lnn() {
	if [ -d "$2" ]; then
		set -- "$1" "$2/$(basename "$1")"
	fi
	if [ ! -e "$2" ] || [ -h "$2" ]; then
		ln -svnf "$1" "$2"
	fi
}

## git-update <repo> <dest-folder>
git_update() {
	if [ -e "$2" ]; then
		pushd "$2"
		git pull
		popd
	else
		git clone "$1" "$2"
	fi
}

echo "==> System packages"
if command -v pacman >/dev/null 2>&1; then
	pacman_list=""
	if [ -f ~/.pkglists/arch-official ]; then
		pacman_list="$(cat ~/.pkglists/arch-official)"
	fi
	sudo pacman --noconfirm -S --needed base base-devel $pacman_list
	if ! command -v cower >/dev/null 2>&1; then
		mkdir -p /tmp/cower
		pushd /tmp/cower
		curl https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h=cower > PKGBUILD
		makepkg --noconfirm -si
		popd
	fi
	if ! command -v pacaur >/dev/null 2>&1; then
		mkdir -p /tmp
		cower -d pacaur
		pushd /tmp/pacaur
		makepkg --noconfirm -si
		popd
	fi
	if $OPT_UPDATE && [ -f ~/.pkglists/arch-aur ]; then
		pacaur --noconfirm --noedit -y --needed "$(cat ~/.pkglists/arch-aur)"
	fi
	pacman_list=$(pacman -Qdtq)
	if [ -n "$pacman_list" ]; then
		sudo pacman --noconfirm -Rs "$pacman_list"
	fi
fi

echo "==> 'temp' folder"
mkdir -pv "$HOME/temp"

echo "==> Bookmarks"
mkdir -pv "$XDG_CONFIG_HOME/qutebrowser/bookmarks"
lnn "$SOURCEDIR/bookmarks/bookmarks" "$XDG_CONFIG_HOME/qutebrowser/bookmarks/urls"
lnn "$SOURCEDIR/bookmarks/quickmarks" "$XDG_CONFIG_HOME/qutebrowser/"

if command -v emacs >/dev/null 2>&1; then
	if $OPT_UPDATE; then
		echo "==> Emacs ELPA packages"
		yes | emacs --batch -l ~/.emacs.d/init.el --eval '(progn (package-refresh-contents) (package-install-selected-packages))'
	fi
	echo "==> Emacs extra packages"
	mkdir -pv ~/.emacs.d/site-lisp
fi

echo "==> Go path"
mkdir -pv "$HOME/go" "$HOME/.go-tools"
if command -v go >/dev/null 2>&1; then
	echo "==> Go extra dev tools"
	export GOPATH="$HOME/.go-tools"
	export PATH="$PATH:$GOPATH/bin"

	go get -v $OPT_GO -ldflags "-s -w" github.com/alecthomas/gometalinter && gometalinter -i $OPT_GO
	strip -s "$GOPATH"/bin/*

	## See https://dominik.honnef.co/posts/2014/12/an_incomplete_list_of_go_tools/.
	## https://dominik.honnef.co/go/
	go get -v $OPT_GO -ldflags "-s -w" \
		github.com/nsf/gocode \
		github.com/rogpeppe/godef
fi

echo "==> Mail"
lnn "$SOURCEDIR/mail/mbsyncrc" "$HOME/.mbsyncrc"
lnn "$SOURCEDIR/mail/authinfo.gpg" "$HOME/.authinfo.gpg"
mkdir -pv "$HOME/.cache/mail/"
if $OPT_UPDATE; then
	while IFS= read -r i; do
		## We get a shell command, so we need to evaluate it to expand "~".
		eval "$i"
	done <<EOF
$(awk '/^Path/ {$1="mkdir -pv"; print}' ~/.mbsyncrc)
EOF
fi

if $OPT_UPDATE; then
	mbsync -aV
	mu index --maildir=~/.cache/mail
fi