#! /bin/sh

# Description:      Manage video output (size, orientation, ...)
#                   And reload wm configuration

# Vars {{{
## First and main screen (laptop screen,…)
readonly MAIN_SCREEN="LVDS-1"

[ -z "${DEBUG}" ] && readonly DEBUG=0

## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
# }}}

debug_message() {                                               # {{{

	local_message="${1}"

	## Print message if DEBUG is enable (=0)
	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME}: ${local_message}"

	return 0
}
# }}}
define_vars() {                                                 # {{{

	return_second_output_name="0"

	SECOND_OUTPUT=$(xrandr | grep " connected" | grep -v "${MAIN_SCREEN}" | awk 'NR==1{ print $1 }')

	debug_message "define_vars − \
The second connected output is: ${SECOND_OUTPUT}."

	return "${return_second_output_name}"
}
# }}}
main() {                                                        # {{{

	## Define all vars
	define_vars

}
# }}}

main

# Manage arguments                                                # {{{
# This code can't be in a function due to arguments
case "${1}" in
	ds | dockstation | work )
		xrandr --output "${SECOND_OUTPUT:=/dev/null}" --mode 1920x1080 --left-of "${MAIN_SCREEN:=/dev/null}" --output "${MAIN_SCREEN:=/dev/null}" --mode 1366x768
		printf 'Xrandr for DisplayPort with dock station';;
	home )
		xrandr --output "${SECOND_OUTPUT:=/dev/null}" --mode 1920x1080 --right-of "${MAIN_SCREEN:=/dev/null}" --output "${MAIN_SCREEN:=/dev/null}" --mode 1366x768
		printf 'Xrandr for home configuration';;
	vga )
		xrandr --output VGA-1 --mode 1024x768 --right-of "${MAIN_SCREEN:=/dev/null}" --output "${MAIN_SCREEN:=/dev/null}" --mode 1366x768
		printf 'Xrandr for dual screen with VGA';;
	hdmi | dp | displayport )
		xrandr --output "${SECOND_OUTPUT:=/dev/null}" --mode 1920x1080 --above "${MAIN_SCREEN:=/dev/null}" --output "${MAIN_SCREEN:=/dev/null}" --mode 1366x768
		printf 'Xrandr for dual screen with DisplayPort';;
	pres | prez | presentation )
		xrandr --output VGA-1 --mode 1024x768 --left-of "${MAIN_SCREEN:=/dev/null}" --output "${MAIN_SCREEN:=/dev/null}" --mode 1366x768
		printf 'Xrandr for presentation';;
	- | off )
		xrandr --output "${MAIN_SCREEN:=/dev/null}" --mode 1360x768 --output "${SECOND_OUTPUT:=/dev/null}" --off --output VGA-1 --off --output HDMI-3 --off --output "${SECOND_OUTPUT:=/dev/null}" --off
		xrandr --output VGA --off
		printf 'Desactivate all video output';;
	out )
		xrandr --output "${SECOND_OUTPUT:=/dev/null}" --mode 1920x1080 --output "${MAIN_SCREEN:=/dev/null}" --off
		;;
	game )
		xrandr --output "${SECOND_OUTPUT:=/dev/null}" --mode 1680x1050 --output "${MAIN_SCREEN:=/dev/null}" --off
		;;
	first_off | main_off | laptop_off )
		xrandr --output "${MAIN_SCREEN:=/dev/null}" --off
		;;
	* )
		printf 'Bad argument, please use [vga|hdmi|ds|work|-|off]'
		exit 1
		;;
esac

# }}}

# Update herbstluftWM configuration
herbstclient detect_monitors
herbstclient reload

exit 0