#!/bin/bash

# Bash script to query for information about latest version of ungoogled-chromium (for specific version)
# $1 -> platform name
# Return Values:
	# 0 -> error
	# 1 -> success

# URL for atom feed
ATOM_URL="https://raw.githubusercontent.com/ungoogled-software/ungoogled-chromium-binaries/master/feed.xml"

PARSED_XML=$(curl -s $ATOM_URL | xml2)

# Get table of available platforms, with versions, and URLs on the following line
PLATFORM_TABLE=$(echo "$PARSED_XML" | grep -E '(/feed/entry/title=)|(/feed/entry/link/@href=)' | sed 's/^.*=//g')

# echo "$PLATFORM_TABLE"


# Set DEFAULT_PLATFORM
if [ -n "$1" ]; then
	PLATFORM="$1"
else
	echo "Error: $0 missing argument"
	exit 0
fi

# grep for PLATFORM in PLATFORM_TABLE, pull out two lines, starting from matching LINE_NUMBER
LINE_NUMBER=$(echo "$PLATFORM_TABLE" | grep -m 1 -n "$PLATFORM" | cut -d ':' -f 1)
echo "$PLATFORM_TABLE" | sed -n "$LINE_NUMBER,$((LINE_NUMBER+1))p"

exit 1

# """
# ---
# 
# # Function to print a message that the currently installed ungoogled-chromium is up to date
# nothing_to_do() {
# 	echo "$UG_PATH is up to date"
# }
# 
# # Function to check if $1 is higher version than $2
# # $1 -> remote version (example: 91.0.4472.164)
# # $2 -> local version (example: 91.0.4472.114)
# # Return value:
# # 	0 -> $1 <= $2 (no need to update)
# # 	1 -> $1 >  $2 (update available)
# compare_version() {
# 	echo "$1"
# 	echo "$2"
# 
# 	# Break into arrays
# 	local IFS='.'
# 	read -ra V1 <<< "$1"
# 	read -ra V2 <<< "$2"
# 
# 	for val in "${V1[@]}"; do
# 		echo "$val"
# 	done
# 	echo ${#V1[@]}
# 	for val in "${V2[@]}"; do
# 		echo "$val"
# 	done
# 	echo ${#V2[@]}
# 
# 	# Determine shorter array (for the loop)
# 	local LENGTH=${#V1[@]}
# 
# 	for (( i = 0 ; i < LENGTH ; i++ )); do
# 		if [ "${V1[$i]}" -gt "${V2[$i]}" ]; then
# 			return 1
# 		elif [ "${V1[$i]}" -lt "${V2[$i]}" ]; then
# 			return 0
# 		fi
# 	done
# 
# 	return 0
# }
# 
# 
# # DEBUG
# #compare_version "91.0.4472.164" "91.0.4472.114"
# 
# # Determine local version if ungoogled-chromium is installed
# if [ -x "$UG_PATH" ]; then
# 	VERSION=$($UG_PATH --version | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")
# 	echo "$VERSION"
# fi
# 
# # If ungoogled-chromium is installed on the machine, check if there is a newer version
# LATEST=$(echo "$PLATFORM_TABLE" | grep "$DEFAULT_PLATFORM")
# # TODO handle ambiguous DEFAULT_PLATFORM
# # TODO handle if unknown DEFAULT_PLATFORM
# 
# if [ -n "$VERSION" ]; then
# 
# 	compare_version "$(echo "$LATEST" | head -n 1 | grep -E -o "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+")" "$VERSION" 
# 	if [ $? -eq 0 ]; then
# 		nothing_to_do
# 		exit
# 	else
# 		echo "Gotta update!"
# 	fi
# fi
# """