#!/bin/sh

# Preliminary sanity checks
[ $(id -u) = 0 ] && echo "Please do not run as root." && exit 1
[ $0 != ./install ] && echo "Not launched from repository root." && exit 1

# Functions
mkconfig(){
	echo "Please get your credentials from https://my.telegram.org."
	read -p "App API ID (api_id): " api_id
	read -p "App API hash (api_hash): " api_hash
	read -p "Your user ID: " myid
	read -p "Do you wish to use a log chat? (y/n): " logrpl
	if [ "$logrpl" = "y" ]
	then
		read -p "Log chat ID (logchat): " logchat
	else
		logchat="'me'"
	fi
	echo "api_id = $api_id" >> config.py
	echo "api_hash = '$api_hash'" >> config.py
	echo "myid = $myid" >> config.py
	echo "logchat = $logchat" >> config.py
}

addfiles(){
	# Create user account, distro mess awaits here...
	# Debian has both useradd and adduser
	if [ -e /sbin/useradd ]
	then
		sudo useradd -r bot
		return 0
	fi
	# Alpine only has adduser (Busybox)
	if [ -e /sbin/adduser ]
	then
		sudo adduser -S bot
		return 0
	fi

	# Install executable and config
	sudo mkdir /etc/ubot
	sudo install -o root -g bot -m640 config.py /etc/ubot/config.py
	sudo install -m755 bin/ubot /usr/bin/ubot

	# Install service files on installed inits
	if [ -e /sbin/openrc ]
	then
		sudo install -m755 init/openrc /etc/init.d/ubot
		sudo ln -s /sbin/openrc /etc/periodic/15min/openrc
	elif [ -e /lib/systemd/systemd ]
	then
		sudo install -m644 init/systemd /etc/systemd/system/ubot.service
	fi
}

# Install dependencies
sudo pip3 install -U telethon
# Generate config if not built yet
[ ! -f config.py ] && mkconfig
# Install files if config is (now) present
[ -f config.py ] && addfiles

return 0