#!/bin/bash
set -Eeuo pipefail

echo "Welcome to logofclient!"
echo "(c)2026 - MyPapertown, MyPaperCloud, Elias Fierke"
echo "Version 1.0"
echo ""

show_help(){
	echo "-- HELP --"
	echo "  -v      | Print the current application version"
	echo "  -h      | Show this help text"
	echo "  -y      | Answer all questions with yes"
	echo ""
	echo "-- COMMANDS --"
	echo "  install    | install logofclient to your linux-system"
	echo "  update     | update the logofclient to the newest version"
	echo "  uninstall  | remove logofclient from your system"
	exit 0
}

install(){
	printf "Fetching version...\n"

	GITEA_URL="${GITEA_URL:-https://git.mypapercloud.de}"
	OWNER="${OWNER:-fierke}"
	REPO="${REPO:-logofclient}"

	API="${GITEA_URL%/}/api/v1"

	release_json="$(
		curl --fail --silent --show-error --location \
			"$API/repos/$OWNER/$REPO/releases/latest"
	)"

	tag="$(
		jq --exit-status --raw-output '.tag_name' <<<"$release_json"
	)"

	printf "Installing logofclient %s...\n" "$tag"

	ASSET="logofclient-$tag-linux.tar.xz"

	asset_url="$(
		jq --exit-status --raw-output \
			--arg asset "$ASSET" \
			'.assets[]
			 | select(.name == $asset)
			 | .browser_download_url' \
			<<<"$release_json"
	)"

	printf 'Downloading package:    %s\n' "$asset_url"

	curl --fail --location --retry 3 \
		--output "$ASSET" \
		"$asset_url"

	INSTALL_DIR="/opt/logofclient"

	printf 'Installing to:           %s\n' "$INSTALL_DIR"

	sudo rm -rf "$INSTALL_DIR"
	sudo mkdir -p "$INSTALL_DIR"

	sudo tar -xf "$ASSET" -C "$INSTALL_DIR"
	echo "$tag" | sudo tee "$INSTALL_DIR/.version" > /dev/null

	sudo ln -sf "$INSTALL_DIR/Logof Client" "/usr/local/bin/logofclient"

	sudo tee /usr/share/applications/logofclient.desktop > /dev/null <<EOF
[Desktop Entry]
Name=logofclient
Comment=logoclient
Exec=/usr/local/bin/logofclient
Terminal=false
Type=Application
Icon=/opt/logofclient/assets/icon.png
Categories=Office;
EOF

	rm -f "$ASSET"

	printf 'Installed logofclient %s successfully.\n' "$tag"
}


uninstall(){
	INSTALL_DIR="/opt/logofclient"
	DESKTOP_FILE="/usr/share/applications/logofclient.desktop"
	BINARY_LINK="/usr/local/bin/logofclient"

	printf "Uninstalling logofclient...\n"

	sudo rm -rf "$INSTALL_DIR"
	sudo rm -f "$BINARY_LINK"
	sudo rm -f "$DESKTOP_FILE"

	printf "logofclient has been uninstalled.\n"
}


update(){
	printf "Checking for updates...\n"

	GITEA_URL="${GITEA_URL:-https://git.mypapercloud.de}"
	OWNER="${OWNER:-fierke}"
	REPO="${REPO:-logofclient}"

	API="${GITEA_URL%/}/api/v1"
	INSTALL_DIR="/opt/logofclient"

	if [[ -f "$INSTALL_DIR/.version" ]]; then
		installed_tag="$(cat "$INSTALL_DIR/.version")"
	else
		installed_tag=""
	fi

	release_json="$(
		curl --fail --silent --show-error --location \
			"$API/repos/$OWNER/$REPO/releases/latest"
	)"

	latest_tag="$(
		jq --exit-status --raw-output '.tag_name' <<<"$release_json"
	)"

	printf "Installed version:      %s\n" "${installed_tag:-none}"
	printf "Latest version:         %s\n" "$latest_tag"

	if [[ "$installed_tag" == "$latest_tag" ]]; then
		printf "Already up to date.\n"
		return 0
	fi

	printf "Updating logofclient: %s -> %s\n" \
		"${installed_tag:-none}" "$latest_tag"

	if [[ -n "$installed_tag" ]]; then
		uninstall
	fi

	install
}


while getopts "yhv" opt; do
	case $opt in
		v) exit 0 ;;
		h) show_help ;;
		y) ALWAYS_YES="1" ;;
		\?) echo "Unknown option: -$OPTARG" >&2; exit 1 ;;
		:) echo "Option -$OPTARG needs an argument" >&2; exit 1 ;;
	esac
done

if [[ "$1" == "install" ]]; then
    
    install
    
    exit 0
fi

if [[ "$1" == "update" ]]; then

    update
    exit 0
fi

if [[ "$1" == "uninstall" ]]; then

    uninstall
    exit 0
fi