General cleanup for readability, Move all display and touchscreen configuration to srandrd config, Add a harder failure case for when srandrd is not installed, Use a case statement instead of multiple if statements for host-specific configuration

.config/srandrd.conf

@@ -1,12 +1,44 @@
 #!/bin/bash
 
+maptouchscreen() { 
+	# maptouchscreen <name> <output>
+	# <name> should be a full name from the output of `xinput list`
+	# <output> should be an xrandr output name
+	xinput --map-to-output $(xinput list --idonly "$1") $2
+}
+
+setpasink() { 
+	# setpasink <name>
+	# Find a unique string in the output of `pacmd list short` to use for <name>
+	pacmd set-default-sink $(pacmd list short | grep $1 | grep -o "^\S\+")
+}
+
+case "$(hostname)" in 
+	"thurstybook")
+		tsid="ELAN Touchscreen"
+		mainoutput="eDP-1"
+		hdmi="HDMI-1"
 
 		case "$SRANDRD_ACTION" in
-	"HDMI-1 connected")	xrandr --output HDMI-1 --auto --right-of eDP-1
-				xinput --map-to-output $(xinput list --id-only "ELAN Touchscreen") eDP-1
-				pacmd set-default-sink 0;;
-	"HDMI-1 disconnected")	xrandr --output HDMI-1 --off --output eDP-1 --auto
-				xinput --map-to-output $(xinput list --id-only "ELAN Touchscreen") eDP-1
-				pacmd set-default-sink 1;;
+			"$hdmi connected")	xrandr --output $hdmi --auto --right-of $mainoutput
+						maptouchscreen $tsid $mainoutput
+						setpasink hdmi
+						;;
+
+			"$hdmi disconnected")	xrandr --output $hdmi --off --output $mainoutput --auto
+						maptouchscreen $tsid $mainoutput
+						setpasink analog
+						;;
+		esac
+		;;
+	
+	"dtarchaio")
+		tsid="Advanced Silicon S.A CoolTouch(TM) System"
+		mainoutput="eDP1"
+		hdmi="HDMI1"
+
+		xrandr --output $mainoutput --auto --output $hdmi --right-of $mainoutput
+		maptouchscreen $tsid $mainoutput
+		;;
 esac
 

.xinitrc

@@ -22,48 +22,45 @@ fi
 
 
 #== Thurstylark additions below ==#
+# Reference: https://wiki.thurstylark.com/Xinitrc.html
 
+# Set st up as the default terminal for i3-sensible-terminal
+export TERMINAL=st
 # Default screen locker
+
 # Set DPMS timeout to 10 sec, force DPMS off,
 # lock with i3lock without forking, then when 
 # unlocked, disable DPMS timeout.
-SCREEN_LOCKER="xset dpms 0 0 10 dpms force off; i3lock --nofork -befc 000000; xset dpms 0 0 0"
-# Default screen lock timeout in minutes
-locktime=30
+screen_locker="xset dpms 0 0 10 dpms force off; i3lock --nofork -befc 000000; xset dpms 0 0 0"
+locktime=30 # Default screen lock timeout in minutes
 
-# Start ssh agent
-eval $(ssh-agent)
+xset +dpms dpms 0 0 0 # Set DPMS features on, but disabled
+
+eval $(ssh-agent) # Start ssh agent
 
 # If srandrd is installed, start it up
-[ -s /usr/bin/srandrd ] && srandrd ~/.config/srandrd.conf
-
-# Thurstybook-specific config:
-if [ "$(hostname)" == "thurstybook" ]; then
-	true # Add stuff here if I need it
+# ALL display/xrandr and touchscreen setup should be configured in ~/.config/srandrd.conf!
+if [ -s /usr/bin/srandrd ]; then
+	srandrd ~/.config/srandrd.conf
+else
+	printf "==== FATAL: srandrd does not appear to be installed! ===="
+	exit 1
 fi
 
-# dtarchaio-specific config:
-if [ "$(hostname)" == "dtarchaio" ]; then
-	# Set screen lock timout to 15 minutes
-	locktime=15
-	# Set HDMI1 to be right of eDP1
-	xrandr --output eDP1 --auto --output HDMI1 --right-of eDP1
-	# Set the bell to be different from Matt's 
-	xset b 75 750 50
-	# Set Touchscreen to only work on main display
-	xinput --map-to-output $(xinput list --id-only "Advanced Silicon S.A CoolTouch(TM) System") eDP1
-fi
+# Host-specific config
+case "$(hostname)" in
+	"dtarchaio")
+		locktime=15 # Screen lock timeout
+		xset b 75 750 50 # Set the bell to be different from Matt's 
+		;;
+esac
 
 # Automatically lock after $locktime minutes using i3lock
-xautolock -time $locktime -locker "$SCREEN_LOCKER" -detectsleep &
-# Set DPMS features on, but disabled
-xset +dpms dpms 0 0 0
+xautolock -time $locktime -locker "$screen_locker" -detectsleep &
 
 # If numlockx is installed, turn numlock on
 [ -s /usr/bin/numlockx ] && numlockx on
 
-# Set st up as the default terminal for i3-sensible-terminal
-export TERMINAL=st
 
 # If $1 isn't set, use "i3"
 session=${1:-i3}