install

#!/bin/bash
# Version 8

# This script detects if the widget is already installed.
# If it is, it will use --upgrade instead and restart plasmashell.
# Eg: kpackagetool6 --type "Plasma/Applet" --install package
# Eg: kpackagetool6 --type "Plasma/Applet" --upgrade package
# Eg: killall plasmashell ; kstart plasmashell

if [ -f "$PWD/package/metadata.json" ]; then # Plasma6 (and later versions of Plasma5)
	packageNamespace=`python3 -c 'import sys, json; print(json.load(sys.stdin).get("KPlugin", {}).get("Id", ""))' < "$PWD/package/metadata.json"`
	packageServiceType=`python3 -c 'import sys, json; print(json.load(sys.stdin).get("KPackageStructure",""))' < "$PWD/package/metadata.json"`
	if [ -z "$packageServiceType" ]; then # desktoptojson will set KPlugin.ServiceTypes[0] instead of KPackageStructure
		packageServiceType=`python3 -c 'import sys, json; print((json.load(sys.stdin).get("KPlugin", {}).get("ServiceTypes", [])+[""])[0])' < "$PWD/package/metadata.json"`
		echo "[warning] metadata.json needs KPackageStructure set in Plasma6"
	fi
elif [ -f "$PWD/package/metadata.desktop" ]; then # Plasma5
	packageNamespace=`kreadconfig5 --file="$PWD/package/metadata.desktop" --group="Desktop Entry" --key="X-KDE-PluginInfo-Name"`
	packageServiceType=`kreadconfig5 --file="$PWD/package/metadata.desktop" --group="Desktop Entry" --key="X-KDE-ServiceTypes"`
else
	echo "[error] Could not find 'package/metadata.json' or 'package/metadata.desktop'"
	exit 1
fi
echo "Namespace: ${packageNamespace}"
echo "Type: ${packageServiceType}"
if [ -z "$packageServiceType" ]; then
	echo "[error] Could not parse metadata"
	exit 1
fi


if command -v kpackagetool6 &> /dev/null ; then kpackagetool="kpackagetool6" # Plasma6
elif command -v kpackagetool5 &> /dev/null ; then kpackagetool="kpackagetool5" # Plasma5
else
	echo "[error] Could not find 'kpackagetool6'"
	exit 1
fi
if command -v kstart &> /dev/null ; then kstart="kstart" # Plasma6
elif command -v kstart5 &> /dev/null ; then kstart="kstart5" # Plasma5
else
	echo "[error] Could not find 'kstart'"
	exit 1
fi
restartPlasmashell=false

for arg in "$@"; do
	case "$arg" in
		-r) restartPlasmashell=true;;
		--restart) restartPlasmashell=true;;
		*) ;;
	esac
done

isAlreadyInstalled=false
"$kpackagetool" --type="${packageServiceType}" --show="$packageNamespace" &> /dev/null
if [ $? == 0 ]; then
	isAlreadyInstalled=true
fi

if $isAlreadyInstalled; then
	# Eg: kpackagetool6 --type "Plasma/Applet" --upgrade package
	"$kpackagetool" -t "${packageServiceType}" -u package
	restartPlasmashell=true
else
	# Eg: kpackagetool6 --type "Plasma/Applet" --install package
	"$kpackagetool" -t "${packageServiceType}" -i package
fi

if $restartPlasmashell; then
	killall plasmashell
	"$kstart" plasmashell
fi