#!/bin/bash
#
# dotfiles deployment manager

profiles=$(grep 'title ".*"' $0 | sed -e 1d | cut -d \" -f 2)

usage () {
	say "usage:"
	verbose "${RESET}opts:"
	verbose "  -a: adapt pacman to ARM architecture"
	verbose "  -b: add blackarch repository"
	verbose "${RESET}profiles:"
	for p in $profiles; do
		verbose "  $p"
	done
}


## LOGGING

RED="\e[31m"
GREEN="\e[32m"
YELLOW="\e[33m"
BLUE="\e[34m"
GREY="\e[90m"
RESET="\e[0m"
BOLD="\e[1m"

SUDO="${RED}sudo$GREY"

# title MSG
title () {
	echo -e "${BLUE}[>]$RESET$BOLD $1$RESET"
}

# NOTE: the $2 expansion is used to pass the -n option to echo
# say MSG [ECHO_OPT]
say () { echo -e $2 "${GREEN}[+]$RESET $1" ;}
# yell MSG [ECHO_OPT]
yell () { echo -e $2 "${RED}[-]$RESET $1" > /dev/stderr ;}
# log MSG [ECHO_OPT]
log () { echo -e $2 "${YELLOW}[·]$RESET $1" ;}
# verbose MSG
verbose () { echo -e "    $GREY$1$RESET" ;}
# verbose_exec MSG
verbose_exec () {
	verbose "$1"
	cmd="${1//\\$RED/}"
	cmd="${cmd//\\$GREY/}"
	eval "$cmd" &> /dev/null
}


## UTILS

# exists PKG
exists () {
	if ! command -v "$1" &> /dev/null; then
		yell "package not found: '$1'"
		return 1
	fi

	if ! find . -maxdepth 1 -type d -name "$1" &> /dev/null; then
		yell "config not found: '$1'"
		return 1
	fi
}

# deploy PKG
deploy () {
	say "deploy '$1'"
	exists "$1" || return
	stow "$1"
}

# deploy_root PKG
deploy_root () {
	say "deploy '$1' (as root)"
	exists "$1" || return
	verbose_exec "$SUDO stow -t / $1"
}

# deploy_pkgs PKGS
deploy_pkgs () {
	for pkg in $1; do
		deploy "$pkg"
	done
}

# choose MSG OPTS...
choose () {
	say "$1"
	shift

	PS3="> "
	select opt in "$@"; do
		if ! grep "$opt" <<<"$@" &> /dev/null; then
			yell "invalid choice"
			exit
		fi
		echo "$opt"
		return
	done
}


## PROFILES

common () {
	title "common"

	pkgs="git mpd neomutt nvim ncmpcpp zsh"
	deploy_pkgs "$pkgs"

	say "deploy 'bin'"
	stow "bin"

	if command -v "pacman" &> /dev/null; then
		verbose_exec "$SUDO rm /etc/pacman.conf"
		verbose_exec "$SUDO rm -r /etc/pacman.d"
		deploy_root "pacman"

		if [ -n "$ARM" ]; then
			log "set ARM repository"
			arch=$(choose "which architecture to use?" armv7h aarch64 | tail -n 1)
			verbose_exec "$SUDO sed -i -E 's/(Architecture = ).*/\1$arch/' /etc/pacman.conf"
			verbose_exec "echo 'Server = http://mirror.archlinuxarm.org/\$arch/\$repo' | $SUDO tee /etc/pacman.d/mirrorlist"
			verbose_exec "echo -e '\n[alarm]\nInclude = /etc/pacman.d/mirrorlist\n[aur]\nInclude = /etc/pacman.d/mirrorlist' | $SUDO tee -a /etc/pacman.conf"
		else
			verbose_exec "$SUDO reflector --country France --country Germany --latest 3 --age 12 --protocol https --sort rate --save /etc/pacman.d/mirrorlist"
		fi
		verbose_exec "$SUDO pacman-key --init"
		verbose_exec "$SUDO pacman-key --populate"

		if [ -n "$BLACKARCH" ]; then
			verbose_exec "echo -e '\n\t[blackarch]\n\tInclude = /etc/pacman.d/blackarch-mirrorlist' | $SUDO tee -a /etc/pacman.conf"
			verbose_exec "curl 'https://raw.githubusercontent.com/BlackArch/blackarch/master/mirror/mirror.lst' \n\t| sed -E 's:.*\|(.*)\|.*:# Server = \1:g' \n\t| $SUDO tee /etc/pacman.d/blackarch-mirrorlist"
		fi
	fi

	deploy "nano"
	verbose_exec "$SUDO rm /etc/nanorc"
	say "deploy 'nano' as root..."
	verbose "sed -r -e 's/^set (.*)color/# # set \1color/g' \n\t-e 's/# set (.*)color/set \1color/g' \n\t~/dotfiles/nano/.nanorc \n\t| $SUDO tee /etc/nanorc"
	sed -r -e 's/^set (.*)color/# # set \1color/g' -e 's/# set (.*)color/set \1color/g' ~/dotfiles/nano/.nanorc | sudo tee /etc/nanorc &> /dev/null
}

graphic () {
	common
	title "graphic"

	pkgs="alacritty kanshi mako sway swaylock mpv qutebrowser waybar zathura"
	deploy_pkgs "$pkgs"

	ln -sf ~/.zprofile.graphic ~/.zprofile

	say "deploy 'homepage'"
	stow homepage

	say "deploy 'wallpaper'"
	stow wallpaper
	if [ ! -e "$HOME/.wallpaper" ]; then
		verbose "choose wallpaper"
	fi

	say "build font..."
	bash ./font/mk.sh &> /dev/null
	#echo " done"
}

laptop () {
	graphic
	title "laptop"

	say "deploy 'tlp'"
	verbose_exec "$SUDO systemctl enable --now tlp.service"

	say "set up wifi"
	verbose_exec "$SUDO systemctl enable --now NetworkManager.service"
}

server () {
	common
	title "server"

	log "configure ssh"
	verbose_exec "$SUDO rm -r /etc/ssh/sshd_config"
	say "deploy 'ssh'"
	deploy_root "ssh"
	verbose "you should run '$SUDO systemctl restart sshd'"
	verbose "ensure you've filled '~/.ssh/authorized_keys'"
	# -s FILE exists and has a size greater than zero
	if [[ -s ~/.ssh/authorized_keys ]]; then
		verbose "  keys detected"
	else
		verbose "  no keys detected"
	fi

	deploy_pkgs "tmux"
	ln -s ~/.zprofile.server ~/.zprofile
}

minimal () {
	title "minimal"

	pkgs="nano nvim zsh"
	deploy_pkgs "$pkgs"

	log "configuring 'zsh'"
	sed -i "1d" ~/.zshrc  # remove zsh plugins
	sed -i "1,6d" ~/.zsh.d/alias.zsh  # remove 'exa' binds
	sed -i "1,6s/^#//" ~/.zsh.d/alias.zsh  # uncomment 'ls' binds
	sed -i "s/^alias cat=.*$//g" ~/.zsh.d/alias.zsh  # remove 'bat' bind

	log "configuring 'nvim'"
	verbose "TODO"
}


## MAIN

if ! command -v "stow" &> /dev/null; then
	echo "please first install stow"
	exit 1
fi

echo -e "$BLUE+------------------------+$RESET"
echo -e "$BLUE|$RESET$BOLD welcome to my dotfiles $RESET$BLUE|$RESET"
echo -e "$BLUE+------------------------+$RESET"

while getopts "ab" opt &> /dev/null; do
	case $opt in
		a)
			ARM="rick astley - never gonna give you up"
			;;
		b)
			BLACKARCH="smash mouth - all star"
			;;
		*)
			yell "wrong option"
			usage
			exit 1
			;;
	esac
done
shift $((OPTIND-1))

say "update git modules"
git submodule update --init

if [[ -n "$1" ]]; then
	log "current selection: $YELLOW'$1'$RESET"
else
	usage
	exit 0
fi

if grep "\b$1\b" <<< "$profiles" &> /dev/null; then
	$1
else
	verbose "profile not found"
	usage
	exit 0
fi

file ~/.zshrc &> /dev/null && (source ~/.zshrc &> /dev/null)

log "${BOLD}done"
echo -e "    $BLUE----$RESET"