#!/bin/bash

checkUpdates()
{
    local param1="$1"

	sourceCheckFiles;

	# Skip Git updates if installation mode is local or Git updates are disabled
	if [[ $CFG_INSTALL_MODE == "local" ]]; then
		isNotice "Local installation detected - Git updates are disabled."
		if [[ $init_run_flag == "true" ]]; then
			startLoad;
		fi
		return
	fi

	if [[ $CFG_GIT_UPDATES == "true" ]]; then
		isHeader "Checking for Updates"

		# Ask user if they want to check for updates
		while true; do
			if [[ $CFG_GIT_UPDATES == "false" ]]; then
				isQuestion "Would you like to check for updates? (y/n): "
				read -p "" check_updates_choice
			elif [[ $CFG_GIT_UPDATES == "true" ]]; then
				check_updates_choice=y
			fi
			case $check_updates_choice in
				[yY])
					# DNS Query Test with Quad9
					isNotice "Testing internet DNS, please wait..."
					if command -v dig >/dev/null 2>&1; then
						dns_check_cmd="dig +short +time=3 +tries=1 @9.9.9.9 quad9.net"
					elif command -v getent >/dev/null 2>&1; then
						dns_check_cmd="getent hosts quad9.net"
					else
						dns_check_cmd="ping -c 1 -W 3 9.9.9.9"
					fi
					if $dns_check_cmd >/dev/null 2>&1; then
						isSuccessful "Internet DNS is working."
					else
						isError "Internet DNS is not working."
						exit 1
					fi

					cd "$script_dir" || { isError " Cannot navigate to the repository directory"; exit 1; }

					# Update Git to ignore changes in file permissions
					sudo -u $sudo_user_name git config core.fileMode false
					# Update Git with email address
					sudo -u $sudo_user_name git config --global user.name "$CFG_INSTALL_NAME"
					sudo -u $sudo_user_name git config --global user.email "noreply@${CFG_INSTALL_NAME,,}.libreportal.local"

					# Check if there are edited (modified) files
					if git status --porcelain | grep -q "^ M"; then
						isNotice "There are uncommitted changes in the repository."
						while true; do
							isQuestion "Do you want to discard these changes and update the repository? (y/n): "
							read -p "" customupdatesfound
							case $customupdatesfound in
								[yY])
									remove_changes=true
									gitCheckForUpdate;
									gitCheckConfigs;
									fixPermissionsBeforeStart "" "update";
									sourceCheckFiles;

									if [[ $init_run_flag == "true" ]]; then
										isSuccessful "Starting/Restarting LibrePortal"
										startLoad;
									fi
									
									;;
								[nN])
									isNotice "Custom changes will be kept, continuing..."
									remove_changes=false
									gitCheckForUpdate;
									gitCheckConfigs;
									fixPermissionsBeforeStart "" "update";
									sourceCheckFiles;
									
									if [[ $init_run_flag == "true" ]]; then
										startLoad;
									fi
									
									;;
								*)
									isNotice "Please provide a valid input (y or n)."
									;;
							esac
						done
					fi

					# Make sure an update happens after custom code check
					if [[ $update_done != "true" ]]; then
						gitCheckForUpdate;

						gitCheckConfigs;
						fixPermissionsBeforeStart "" "update";
						sourceCheckFiles;

						if [[ $init_run_flag == "true" ]]; then
							isSuccessful "Starting/Restarting LibrePortal"
							startLoad;
						fi
					fi
					;;
				[nN])
					echo ""
					isNotice "Skipping update check. Starting application..."
					if [[ $init_run_flag == "true" ]]; then
						startLoad;
					fi
					;;
				*)
					isNotice "Please enter y or n."
					;;
			esac
		done
	else
        if [[ $init_run_flag == "true" ]]; then
            startLoad;
        fi
	fi
}