#!/usr/bin/env bash

mkdir -p /tmp/tdrop

print_help() {
	echo "
	Used for hiding/unhiding programs to acheive quake-dropdown-like-functionality. Can create a dropdown window if one does not already exist and provides options to control the intial size and position, e.g. to leave panels visible. When used with a terminal, provides the option to specify the name of a tmuxinator or tmux session to automatically start or attach to.

	Also supports the ability to auto-hide and auto-show. For example, this can be used to automatically hide a window when opening something, e.g. image viewer, video player, etc. from it, and then re-show the window whenever the image view, video player, etc. is closed.

	Takes a window as an argument or one of auto_show, auto_hide, or toggle_auto_hide. 'toggle_auto_hide' toggles whether calling 'auto_hide' or 'auto_show' will have any effect. 'current' will turn the current window into a dropdown.

usage: tdrop [options] <program or 'current'> or one of <auto_show/auto_hide/toggle_auto_hide>
options:
	-h height    specify a height for a newly created term (default: 45%)
	-w width     specify a width for a newly created term (default: 100%)
	-x pos       specify x offset for a newly created term (default: 0)
	-y pos       specify y offset for a newly created term (default: 1, see BUGS in man)
	-s name      name for tmux or tmuxinator session (requires the program to be a supported terminal)
	-n num       num or extra text; only needed if want multiple dropdowns of same program (default: none)
	-p cmd       provide a pre-map command to float the window if necessary
	-P cmd       provide a post-map command to float the window if necessary
	-M cmd       provide a post-unmap command; can be used for example with a window manager that doesn't support floating to turn fullscreen on when mapping a terminal then off when unmapping it
	-O cmd       provide a one time command only for when a dropdown is created/initiated (useful for 'tdrop current')
	-d XxY       give decoration/border size to accurately save position; only applicable with auto_show; on applicable with a few window managers (e.g. blackbox)
	-f           specify flags/options to be used when creating the term or window (e.g. -f '--title mytitle'; default: none). caution: if there is a tmux/tmuxinator session specified (with -s), the option to execute a program (usually -e for terminal programs) is implicitly added by tdrop!
	-a           automatically detect window manager and if settings exist for it, automatically set -p, -P, and -d values as necessary; this can have affect when used with a terminal or with auto_show or auto_hide (default: false)
	-m           for use with multiple monitors and only with dropdowns (not for auto_show or auto_hide); convert percentages used for width or height to values relative to the size of the current monitor and force reszing of the dropdown when the monitor changes (default: false)
	-c cmd       provide a command to be run after first creating the dropdown
	             (e.g. to set some window property)
	--clear      clear saved window id; useful accidentally make a window a dropdown (e.g. '$ tdrop --clear current')
	--no-cancel  don't cancel auto-showing
	             (default is to prevent this when manually toggling a term after it is auto-hidden)
	--help       print help

See man page for more details.
"
	if [[ $1 == illegal_opt ]]; then
		exit 1
	else
		exit 0
	fi
}

#
# Default Options and Option Parsing
#

# xdotool can take percentages; cannot take decimal percentages though
width="100%"
height="45%"
xoff=0
yoff=2
session_name=""
num=""
map_pre=""
map_post=""
unmap_post=""
oneshot_post=""
create_hook=""
map_hook=""
dec_fix=""
program_flags=""
clearwid=false
cancel_auto_show=true
auto_detect_wm=false
monitor_aware=false
while getopts :h:w:x:y:s:n:p:P:M:O:c:d:f:-:am opt
do
	case $opt in
	h) height=$OPTARG;;
	w) width=$OPTARG;;
	x) xoff=$OPTARG;;
	y) yoff=$OPTARG;;
	s) session_name=$OPTARG;;
	n) num=$OPTARG;;
	p) map_pre=$OPTARG;;
	P) map_post=$OPTARG;;
	M) unmap_post=$OPTARG;;
	O) oneshot_post=$OPTARG;;
	c) create_hook=$OPTARG;;
	d) dec_fix=$OPTARG;;
	f) program_flags=$OPTARG;;
	a) auto_detect_wm=true;;
	m) monitor_aware=true;;
	-)
		if [[ $OPTARG =~ ^(auto-detect-wm|monitor-aware|clear|no-cancel|help)$ ]] || \
			[[ $OPTARG == *=* ]]; then
			OPTION=${OPTARG%%=*}
			OPTARG=${OPTARG#*=}
		else
			OPTION=$OPTARG
			# shellcheck disable=SC2124
			OPTARG=${@:$OPTIND:1}
			((OPTIND++))
		fi
		case $OPTION in
		height) height=$OPTARG;;
		width) width=$OPTARG;;
		x-offset) xoff=$OPTARG;;
		y-offset) yoff=$OPTARG;;
		session) session_name=$OPTARG;;
		number) num=$OPTARG;;
		pre-command) map_pre=$OPTARG;;
		post-command) map_post=$OPTARG;;
		post-unmap) unmap_post=$OPTARG;;
		oneshot-post) oneshot_post=$OPTARG;;
		create-hook) create_hook=$OPTARG;;
		map-hook) map_hook=$OPTARG;;
		decoration-fix) dec_fix=$OPTARG;;
		program-flags) program_flags=$OPTARG;;
		auto-detect-wm) auto_detect_wm=true;;
		monitor-aware) monitor_aware=true;;
		clear) clearwid=true;;
		no-cancel) cancel_auto_show=false;;
		help) print_help;;
		*) print_help illegal_opt;;
		esac;;
	*) print_help illegal_opt;;
    esac
done
shift "$((OPTIND-1))"
program=$1

if [[ $# -ne 1 ]]; then
	echo >&2 "Exactly 1 positional argument is required." \
		"For help use -h or --help or see the manpage." | \
		tee -a /tmp/tdrop/log
	exit 1
fi

# validate options that require number values
if [[ ! $height$width$xoff$yoff =~ ^[0-9%-]*$ ]]; then
	echo >&2 "The -h, -w, -x, and -y values must be numbers (or percentages)." | \
		tee -a /tmp/tdrop/log
	exit 1
fi
if [[ -n $dec_fix ]] && [[ ! $dec_fix =~ ^-?[0-9]+x-?[0-9]+$ ]]; then
	echo >&2 "The decoration fix value must have form 'num'x'num'." \
		"The numbers can be negative or zero." | tee -a /tmp/tdrop/log
	exit 1
fi

# non-user-settable global vars

# necessary to account for differences in geometry/positioning output from xwininfo
# for different WMs (matters when a window is in a corner or on the side)
subtract_when_same=true
# will be set to true to eliminate or reduce flicker for WMs that alter window
# position when remapping; when true, windowmap and windowmove are combined, so that
# the window is correctly positioned earlier
combine_map_post=false
# set to true if the -m option is being used and the monitor has changed
# in order to force resize the dropdown to the given width/height percentages
# for the current monitor
monitor_changed=false
# used for -m option; at first tdrop assumes that there is a focused window
# on the current desktop; if there isn't (and the WM doesn't have some way to
# query the current monitor), this will be set to false, and tdrop will have to
# find out the current monitor info after opening the dropdown
# (currently, using xwininfo to find the position of a window is the only
# WM-independent way I know to find out what the current monitor is)
focused_window_exists=true

#
# Multiple Monitor Automatic Re-Sizing
#

percent_of_total() { # percent total
	awk "BEGIN {printf(\"%.0f\", 0.01*${1%\%}*$2)}"
}

# acts on globals
convert_geometry_to_pixels() {
	total_width=$1
	total_height=$2
	local minus_width minus_height minus_xoff minus_yoff
	if [[ $width =~ %$ ]]; then
		width=$(percent_of_total "$width" "$total_width")
	elif [[ $width =~ ^- ]]; then
		minus_width=${width#-}
		width=$((total_width-minus_width))
	fi
	if [[ $height =~ %$ ]]; then
		height=$(percent_of_total "$height" "$total_height")
	elif [[ $height =~ ^- ]]; then
		minus_height=${height#-}
		height=$((total_height-minus_height))
	fi
	if [[ $xoff =~ %$ ]]; then
		xoff=$(percent_of_total "$xoff" "$total_width")
	elif [[ $xoff =~ ^- ]]; then
		minus_xoff=${xoff#-}
		xoff=$((total_width-minus_xoff))
	fi
	if [[ $yoff =~ %$ ]]; then
		yoff=$(percent_of_total "$yoff" "$total_height")
	elif [[ $yoff =~ ^- ]]; then
		minus_yoff=${yoff#-}
		yoff=$((total_height-minus_yoff))
	fi
}

update_geometry_settings_for_monitor() {
	# 1. Correctly interpret width/height percentages when there exist multiple
	#    monitors so an initially created dropdown is the correct size (xdotool
	#    would create a dropdown the width of all screens for 100% width)
	# 2. Force resize the dropdown to the correct percentage of the current
	#    monitor IF the monitor has changed since the last time the dropdown
	#    was used

	# it is conceivable that a user may want to use -m but not -a, so
	# get the wm from within this function
	local wm current_monitor
	wm=$(get_window_manager)
	if [[ $wm == bspwm ]]; then
		current_monitor=$(bspc query -T -m | grep -Po '^{"name":.*?",' | \
			awk -F ":" '{gsub("[\",]", ""); print $2}')
	elif [[ $wm == i3 ]]; then
		# I'd rather not make jq a dependency
		current_monitor=$(i3-msg -t get_workspaces | sed 's/{"num"/\n/g' | \
			awk -F ',' '/focused":true/ {sub(".*output",""); gsub("[:\"]",""); print $1}')
	fi

	local monitor_geo x_begin y_begin x_width y_height
	if [[ -n $current_monitor ]]; then
		monitor_geo=$(xrandr --query | \
			awk "/$current_monitor/ {gsub(\"primary \",\"\"); print \$3}")
		x_begin=$(echo "$monitor_geo" | awk -F '+' '{print $2}')
		y_begin=$(echo "$monitor_geo" | awk -F '+' '{print $3}')
		x_width=$(echo "$monitor_geo" | awk -F 'x' '{print $1}')
		y_height=$(echo "$monitor_geo" | awk -F 'x|+' '{print $2}')
	else
		local wid wininfo window_x window_y monitors_info x_end y_end
		# determine current monitor in generic way
		wid=$(xdotool getactivewindow)
		if [[ -z $wid ]]; then
			# will try again after remapping or creating the dropdown
			return 1
		fi
		wininfo=$(xwininfo -id "$wid")
		window_x=$(echo "$wininfo" | awk '/Absolute.*X/ {print $4}')
		window_y=$(echo "$wininfo" | awk '/Absolute.*Y/ {print $4}')
		monitors_info=$(xrandr --query | awk '/ connected/ {gsub("primary ",""); print}')
		while read -r monitor; do
			monitor_geo=$(echo "$monitor" | awk '{print $3}')
			x_begin=$(echo "$monitor_geo" | awk -F '+' '{print $2}')
			y_begin=$(echo "$monitor_geo" | awk -F '+' '{print $3}')
			x_width=$(echo "$monitor_geo" | awk -F 'x' '{print $1}')
			y_height=$(echo "$monitor_geo" | awk -F 'x|+' '{print $2}')
			x_end=$((x_begin+x_width))
			y_end=$((y_begin+y_height))
			if [[ $window_x -ge $x_begin ]] && [[ $window_x -lt $x_end ]] && \
				[[ $window_y -ge $y_begin ]] && [[ $window_y -lt $y_end ]]; then
				current_monitor=$(echo "$monitor" | awk '{print $1}')
				break
			fi
		done <<< "$monitors_info"
	fi

	# convert w/h/x/y percentages/negatives to pixels
	convert_geometry_to_pixels "$x_width" "$y_height"

	# update x and y offsets, so that will appear on correct screen
	# (required for some WMs apparently, but not for others)
	((xoff+=x_begin))
	((yoff+=y_begin))

	# determine if monitor has changed and save current monitor
	local last_monitor
	last_monitor=$(< /tmp/tdrop/last_monitor) 2> /dev/null
	echo "$current_monitor" > /tmp/tdrop/last_monitor
	if [[ $current_monitor != "$last_monitor" ]]; then
		monitor_changed=true
	fi
}

set_geometry_for_monitor() {
	xdotool windowmove "$1" "$xoff" "$yoff" windowsize "$1" "$width" "$height"
}

#
# WM Detection and Settings
#

get_window_manager() {
	# xfwm4 and fvwm at least will give two names (hence piping into head)
	xprop -notype -id "$(xprop -root -notype | \
		awk '$1=="_NET_SUPPORTING_WM_CHECK:"{print $5}')" \
		-f _NET_WM_NAME 8u | awk -F "\"" '/WM_NAME/ {print $2}' | head -n 1
}

# settings that apply for both tdrop <term> and tdrop auto_(hide|show)
# e.g. tilers w/ floating support: settings for floating a window when mapping it
# can set up a rule for always floating a window or term type/class
# alternatively, can use these settings to float just the dropdown
wm_autoset_for_all() {
	# bspwm will use previous size when floating already
	if [[ $wm == bspwm ]]; then
		map_pre() {
			class=$1
			if [[ $1 =~ ^google-chrome ]]; then
				class=google-chrome
			fi
			# newest (using "instance" names)
			if [[ $class =~ [A-Z] ]]; then
				bspc rule -a "$class" -o state=floating
			else
				bspc rule -a \*:"$class" -o state=floating
			fi
		}
	elif [[ $wm == awesome ]]; then
		# awesome remembers size, but need to float and then set size first
		map_post_oneshot() {
			echo 'local awful = require("awful") ; awful.client.floating.set(c, true)' | \
				awesome-client && \
				xdotool windowmove "$1" "$xoff" "$yoff" \
				windowsize "$1" "$width" "$height"
		}
		map_post() {
			echo 'local awful = require("awful") ; awful.client.floating.set(c, true)' | \
				awesome-client
		}
	
	# tilers that won't remember sizing
	elif [[ $wm == i3 ]]; then
		map_post_oneshot() {
			i3-msg "[id=$1] floating enable" > /dev/null && \
				xdotool windowmove "$1" "$xoff" "$yoff" \
					windowsize "$1" "$width" "$height"
		}
		map_post() {
			i3-msg "[id=$1] floating enable" > /dev/null && \
				xdotool windowmove "$1" "$xoff" "$yoff"
		}
	fi
}

# settings for maintining previous size/placement of windows when unhiding them
wm_autoset_for_hide_show() {
	# tilers: is_floating function so that hidden tiling windows don't become floating
	if [[ $wm == bspwm ]]; then
		subtract_when_same=false
		is_floating() {
			bspc query -T -n | grep '"state":"floating"'
		}
	elif [[ $wm == i3 ]]; then
		subtract_when_same=false
		is_floating() {
			# do you even sed?
			i3-msg -t get_tree | awk 'gsub(/{"id"/, "\n{\"id\"")' | \
				awk '/focused":true.*floating":"user_on/ {print $1}'
		}

	# settings for stacking/floating wms where can't get right position easily from xwininfo
	# take borders into account
	elif [[ $wm == Blackbox ]]; then
		dec_fix_auto="1x22"
	elif [[ $wm =~ ^(Mutter|GNOME Shell)$ ]]; then
		dec_fix_auto="-10x-8"
		subtract_when_same=false
	elif [[ $wm =~ ^(Mutter \(Muffin\))$ ]]; then
		dec_fix_auto="-9x-8"
	
	# NOTE:
	# pekwm, xfwm4, sawfish, openbox need subtract_when_same to be true (default)
	# for fluxbox, blackbox, fvwm, and metacity, the value does not matter
	elif [[ $wm == GoomwW ]]; then
		subtract_when_same=false
	fi

	if [[ $wm =~ ^(pekwm|Fluxbox|Blackbox|xfwm4|Metacity|FVWM|Sawfish|GoomwW|Mutter|GNOME Shell|Mutter \(Muffin\)|KWin|Metacity \(Marco\)|[Cc]ompiz)$ ]]; then
		combine_map_post=true
		map_post() {
			xdotool windowmap "$1" windowmove "$1" "$2" "$3" 2> /dev/null
		}
	fi
}

wm_autoset_for_dropdown() {
	# tilers without floating support: can toggle fullscreen instead for the dropdown
	if [[ $wm == herbstluftwm ]]; then
		map_post() {
			herbstclient fullscreen on
		}
		unmap_post() {
			herbstclient fullscreen off
		}

	# floating window managers that may both move and resize a window after unmapping then mapping it
	elif [[ $wm == Openbox ]]; then
		# openbox will resize window to be slightly less than the width of the screen when mapping
		# this is necessary when want width to be 100%
		combine_map_post=true
		map_post() {
			xdotool windowmap "$1" windowmove "$1" "$xoff" "$yoff" \
				windowsize "$1" "$width" "$height" 2> /dev/null
		}
	# floating window managers that may move a window after unmapping then mapping it
	elif [[ $wm =~ ^(pekwm|Fluxbox|Blackbox|xfwm4|Metacity|FVWM|Sawfish|GoomwW|Mutter|GNOME Shell|Mutter \(Muffin\)|KWin|Metacity \(Marco\)|[Cc]ompiz|bspwm)$ ]]; then
		# most will center
		# mutter/gnome shell will move to top centerish (just below panel on gnome shell)
		# xfwm4 will normally move to top left; metacity will move close to top left
		# sawfish just moves all over the place
		combine_map_post=true
		map_post() {
			# when first creating, the window will already be mapped before it is run
			# suppress the error from trying to map a mapped window
			xdotool windowmap "$1" windowmove "$1" "$xoff" "$yoff" 2> /dev/null
		}
	fi
}

#
# Helper Functions for Specific Dropdowns and Auto Hide/Show
#

get_class_name() {
	xprop -id "$1" WM_CLASS | awk '{gsub(/"/, ""); print $4}'
}

get_visibility() {
	xwininfo -id "$1" 2> /dev/null | awk '/Map State/ {print $3}'
}

map_pre_command() {
	# a user set option has higher priority
	if [[ -n $map_pre ]]; then
		eval "$map_pre"
	# use automatically set function if exists
	elif [[ -n $(type map_pre 2> /dev/null) ]]; then
		# needed when creating oneshot rules for programs where cmd differs from actual class name
		if [[ $1 == gnome-terminal ]]; then
			map_pre "Gnome-terminal"
		elif [[ $1 == urxvtc ]]; then
			map_pre "urxvt"
		else
			map_pre "$1"
		fi
	fi
}

map_post_command() {
	if [[ -n $oneshot_post ]] && [[ $1 == oneshot ]]; then
		eval "$oneshot_post"
	elif [[ -n $(type map_post_oneshot 2> /dev/null) ]] && \
		[[ $1 == oneshot ]]; then
		map_post_oneshot "$2"
	elif [[ -n $map_post ]]; then
		eval "$map_post"
	elif [[ -n $(type map_post 2> /dev/null) ]]; then
		map_post "$@"
	fi
}

unmap_post_command() {
	if [[ -n $unmap_post ]]; then
		eval "$unmap_post"
	elif [[ -n $(type unmap_post 2> /dev/null) ]]; then
		unmap_post
	fi
}

run_create_hook() {
	if [[ -n $create_hook ]]; then
		eval "$create_hook"
	fi
}

run_map_hook() {
	if [[ -n $map_hook ]]; then
		eval "$map_hook"
	fi
}

maybe_cancel_auto_show() {
	if $cancel_auto_show && \
		[[ $1 == $(cat /tmp/tdrop/auto_hidden/wid 2> /dev/null) ]]; then
		> /tmp/tdrop/auto_hidden/wid
	fi
}

#
# Dropdown Initialization
#

create_win_return_wid() {
	local blacklist program_command pid visible_wid wids program_wid
	# blacklist all existing wids of program
	# (for programs where one pid shares all wids)
	blacklist=$(xdotool search --classname "$program")
	# for programs where $! won't always work (e.g. one pid for all windows)
	if [[ $program =~ ^(terminix|xfce4-terminal)$ ]]; then
		pid=$(pgrep -x "$program")
	elif [[ $program == urxvtc ]]; then
		blacklist=$(xdotool search --classname urxvtd)
		pid=$(pgrep -x urxvtd)
	elif [[ $program == chromium ]]; then
		# this may work fine
		# pid=$(pgrep -xo chromium)
		pid=$(pgrep -xa chromium | awk '!/--type/ {print $1}')
	elif [[ $program == chromium-browser ]]; then
		pid=$(pgrep -xa chromium-browse | awk '!/--type/ {print $1}')
	elif [[ $program =~ ^google-chrome ]]; then
		pid=$(pgrep -xa chrome | awk '!/--type/ {print $1}')
	fi
	# need to redirect stdout or function won't return
	eval "$1 > /dev/null &"
	if [[ -z $pid ]]; then
		# for normal programs
		# also for when one of the programs above hadn't already been started
		pid=$!
	fi
	visible_wid=false
	while : ; do
		if [[ $program == gnome-terminal ]]; then
			# only 1 pid; changes at some point after first run
			# actual process name for me is gnome-terminal-
			pid=$(pgrep gnome-terminal)
		fi
		wids=$(xdotool search --pid "$pid")
		if [[ -n "$wids" ]]; then
			while read -r wid; do
				if [[ ! $blacklist =~ (^|$'\n')"$wid"($|$'\n') ]] && \
					[[ $(get_visibility "$wid") == IsViewable ]]; then
					visible_wid=true
					program_wid=$wid
				fi
			done <<< "$wids"
		fi
		if $visible_wid; then
			break
		fi
		sleep 0.01
	done
	echo -n "$program_wid"
}

program_start() {
	local program_command tmux_command wid
	program_command="$program $program_flags"
	if [[ -n "$session_name" ]]; then
		session_name=$(printf "%q" "$session_name")
		tmux_command="'tmux attach-session -dt $session_name || \
			tmuxinator start $session_name || \
			tmux new-session -s $session_name'"
		if [[ $program == urxvt ]]; then
			program_command="$program_command -e bash -c $tmux_command"
		elif [[ $program == terminix ]]; then
			program_command="$program_command -x \"bash -c $tmux_command\""
		else
			program_command="$program_command -e \"bash -c $tmux_command\""
		fi
	fi
	wid=$(create_win_return_wid "$program_command")
	echo "$wid" > /tmp/tdrop/"$program$num"
	# only will work if a pre-command has been run (e.g. bspwm)
	xdotool windowmove "$wid" "$xoff" "$yoff" \
		windowsize "$wid" "$width" "$height"
	echo -n "$wid"
}

current_create() {
	# turns active window into a dropdown
	local wid
	wid=$(xdotool getactivewindow)
	echo "$wid" > /tmp/tdrop/current"$num"
	get_class_name "$wid" > /tmp/tdrop/current"$num"_type
	echo -n "$wid"
}

wid_toggle() {
	# deal with percentages/negatives when no -m
	if ! $monitor_aware; then
		local total_geo total_width total_height
		total_geo=$(xwininfo -root | awk '/geometry/ {print $2}')
		total_width=$(echo "$total_geo" | awk -F 'x' '{print $1}')
		total_height=$(echo "$total_geo" | awk -F 'x|+' '{print $2}')
		convert_geometry_to_pixels "$total_width" "$total_height"
	fi
	# get saved window id if already created
	local wid exists visibility
	wid=$(< /tmp/tdrop/"$program$num") 2> /dev/null
	exists=true
	if [[ -n $wid ]]; then
		visibility=$(get_visibility "$wid")
		# sometimes xwininfo will still report a window as existing hence xprop check
		if [[ -z $visibility ]] || [[ -z $(xprop -id "$wid" 2> /dev/null) ]]; then
			# window no longer exists
			exists=false
			> /tmp/tdrop/"$program$num"
		fi
	else
		exists=false
	fi
	if $exists; then
		if [[ $visibility == IsUnMapped ]]; then
			# visibility will be IsUnMapped on most WMs if the dropdown is open
			# on another desktop
			xdotool set_desktop_for_window "$wid" "$(xdotool get_desktop)"
			if [[ $(get_visibility "$wid") == IsUnMapped ]]; then
				if [[ $program == current ]]; then
					map_pre_command "$(< /tmp/tdrop/current"$num"_type)"
				else
					map_pre_command "$program"
				fi
			else
				xdotool windowactivate "$wid"
			fi
			# update here if possible so this doesn't cause a delay
			# between the window being remapped and resized
			if $monitor_aware; then
				update_geometry_settings_for_monitor || \
					focused_window_exists=false
			fi
			if ! $combine_map_post; then
				xdotool windowmap "$wid"
				map_post_command "$wid"
			else
				# combine mapping with resizing/moving when possible to reduce flicker
				map_post_command "$wid"
			fi
			run_map_hook "$wid"
			maybe_cancel_auto_show "$wid"
			if ! $focused_window_exists; then
				# need to use dropdown as active window to get monitor info
				update_geometry_settings_for_monitor
			fi
			# would be much too messy to integrate a resize into existing map_post commands
			# or add for those WMs that don't even need an xdotool command
			# cleaner to do after any map_post command with the downside of potential
			# for minimal flicker or redundancy
			if $monitor_changed; then
				set_geometry_for_monitor "$wid"
			fi
		else
			xdotool windowunmap "$wid"
		fi
	else
		# necessary to deal with negative width or height
		# if creating on an empty desktop and can't determine the monitor,
		# must set temporary values for negative width and/or height
		local original_width original_height
		if $monitor_aware && ! update_geometry_settings_for_monitor; then
			focused_window_exists=false
			if [[ $width =~ ^- ]]; then
				original_width=$width
				width=100%
			fi
			if [[ $height =~ ^- ]]; then
				original_height=$height
				height=100%
			fi
		fi
		# make it
		map_pre_command "$program"
		if [[ $program == current ]]; then
			wid=$(current_create)
			xdotool windowunmap "$wid"
			run_create_hook "$wid"
		else
			wid=$(program_start)
			map_post_command oneshot "$wid"
			run_create_hook "$wid"
			run_map_hook "$wid"
			# update window dimensions if necessary
			if ! $focused_window_exists; then
				width=${original_width:-$width}
				height=${original_height:-$height}
				update_geometry_settings_for_monitor
				set_geometry_for_monitor "$wid"
			fi
		fi
	fi
}

#
# Helper Functions for Auto Hiding/Showing
#

get_geometry() {
	# so that won't float a tiled window later when showing
	if [[ -n $(type is_floating 2> /dev/null) ]] && \
		[[ -z $(is_floating "$1") ]]; then
		# window is not floating; don't bother saving geometry
		echo -n "false"
	else
		local wininfo x y rel_x rel_y
		wininfo=$(xwininfo -id "$1")
		x=$(echo "$wininfo" | awk '/Absolute.*X/ {print $4}')
		y=$(echo "$wininfo" | awk '/Absolute.*Y/ {print $4}')
		rel_x=$(echo "$wininfo" | awk '/Relative.*X/ {print $4}')
		rel_y=$(echo "$wininfo" | awk '/Relative.*Y/ {print $4}')
		if $subtract_when_same; then
			# behaviour works for most WMs (at least floating ones)
			x=$((x-rel_x))
			y=$((y-rel_y))
		else
			# don't subtract when abs and rel values are the same
			# necessary for WMs like bspwm and i3
			if [[ $x -ne $rel_x ]]; then
				x=$((x-rel_x))
			fi
			if [[ $y -ne $rel_y ]]; then
				y=$((y-rel_y))
			fi
		fi
		echo -n -e "X=$x\nY=$y"
	fi
}

give_geometry() {
	eval "$(< /tmp/tdrop/auto_hidden/geometry)"
	local x_fix y_fix X Y
	if [[ -n $dec_fix ]]; then
		x_fix=$(echo "$dec_fix" | awk -F "x" '{print $1}')
		y_fix=$(echo "$dec_fix" | awk -F "x" '{print $2}')
		X=$((X-x_fix))
		Y=$((Y-y_fix))
	elif [[ -n $dec_fix_auto ]]; then
		x_fix=$(echo "$dec_fix_auto" | awk -F "x" '{print $1}')
		y_fix=$(echo "$dec_fix_auto" | awk -F "x" '{print $2}')
		X=$((X-x_fix))
		Y=$((Y-y_fix))
	fi
	echo -n "$X $Y"
}

set_geometry() {
	xdotool windowmove "$1" "$(give_geometry)"
}

toggle_auto_hide() {
	local no_hide
	no_hide=$(< /tmp/tdrop/auto_hidden/no_hide) 2> /dev/null
	mkdir -p /tmp/tdrop/auto_hidden
	if [[ -z $no_hide ]]; then
		echo "true" > /tmp/tdrop/auto_hidden/no_hide
	else
		> /tmp/tdrop/auto_hidden/no_hide
	fi
}

#
# Auto Hiding/Showing
#

auto_hide() {
	local no_hide
	no_hide=$(< /tmp/tdrop/auto_hidden/no_hide) 2> /dev/null
	if [[ -z $no_hide ]]; then
		local wid
		wid=$(xdotool getactivewindow)
		mkdir -p /tmp/tdrop/auto_hidden
		echo "$wid" > /tmp/tdrop/auto_hidden/wid
		get_class_name "$wid" > /tmp/tdrop/auto_hidden/class
		get_geometry "$wid" > /tmp/tdrop/auto_hidden/geometry
		xdotool windowunmap "$wid"
	fi
}

auto_show() {
	local no_hide
	no_hide=$(< /tmp/tdrop/auto_hidden/no_hide) 2> /dev/null
	if [[ -z $no_hide ]]; then
		local wid class was_floating
		wid=$(< /tmp/tdrop/auto_hidden/wid)
		class=$(< /tmp/tdrop/auto_hidden/class)
		was_floating=$(< /tmp/tdrop/auto_hidden/geometry)
		if [[ $was_floating != false ]]; then
			map_pre_command "$class"
		fi
		if ! $combine_map_post; then
			xdotool windowmap "$wid"
		fi
		if [[ $was_floating != false ]]; then
			if $combine_map_post; then
				local XY X Y
				XY=$(give_geometry "$wid")
				X=$(echo "$XY" | awk '{print $1}')
				Y=$(echo "$XY" | awk '{print $2}')
				map_post_command "$wid" "$X" "$Y"
			else
				map_post_command "$wid"
				set_geometry "$wid"
			fi
		else
			xdotool windowmap "$wid"
		fi
	fi
}

#
# Main
#

if $auto_detect_wm; then
	wm=$(get_window_manager)
	wm_autoset_for_all
	if [[ $program == auto_show ]] || [[ $program == auto_hide ]]; then
		wm_autoset_for_hide_show
	else
		wm_autoset_for_dropdown
	fi
fi
if $clearwid; then
	> /tmp/tdrop/"$program$num"
elif [[ $program == toggle_auto_hide ]]; then
	toggle_auto_hide
elif [[ $program == auto_hide ]]; then
	auto_hide
elif [[ $program == auto_show ]]; then
	auto_show
else
	wid_toggle
fi
# vim is dumb
# vim: set ft=sh noet: