#!/bin/sh

DAYZ_GAME_ID=221100
DAYZ_SERVER_ID=223350
LOCAL_MODS_DIR="${HOME}/.steam/debian-installation/steamapps/workshop/content/$DAYZ_GAME_ID"
STEAM_USER="yzaddayz"

alias do_sync='rsync -avrhu --delete --partial'

msg() {
	printf '[*] %s\n' "$*"
}

# ====================================================================================

update_server() {
	msg "------------------ UPDATING DAYZ SERVER -------------------"

	LOCAL_INSTALL_DIR="${HOME}/.steam/debian-installation/steamapps/common/DayZServer"
	REMOTE_INSTALL_DIR="/mnt/dayz/DayZServer"
	MODS_FILE="$HOME/mods.txt"

	steamcmd -tcp +login "$STEAM_USER" +app_update "$DAYZ_GAME_ID" +quit
	steamcmd -tcp +login "$STEAM_USER" +app_update "$DAYZ_SERVER_ID" +quit

	do_sync "$LOCAL_INSTALL_DIR"/ "$REMOTE_INSTALL_DIR"
	msg "------- DONE UPDATING SERVER ---------------------"
}

# args: $1=server_name
update_mods() {
	MODS_FILE="$HOME/modlists/$1.txt"
	REMOTE_MODS_DIR="/mnt/dayz/mods/$1"

	tempfile=/tmp/mods-to-download.txt
	:> "$tempfile"

	while read -r mod ; do
		# skip comments, blank lines
		case "$mod" in
			\#*|'')
				;;
			*)
				mod=${mod%%^*}
				printf "+workshop_download_item $DAYZ_GAME_ID %s\n" "$mod" >> "$tempfile"
				mkdir -p "$LOCAL_MODS_DIR/$mod"
		esac
	done < "$MODS_FILE"

	msg "----------- DOWNLOAD MODS -------------"
	steamcmd -tcp +login "$STEAM_USER" $(cat "$tempfile" | xargs) +quit || exit 1

	msg "----------- RENAMING MODS -------------"

	rm -rf "$HOME/mods_to_copy" 2>/dev/null ||:
	mkdir -p "$HOME/mods_to_copy"
	while read -r mod ; do
		# skip comments, blank lines
		case "$mod" in
			\#*|'')
				;;
			*)
				mod_id=${mod%%^*}
				mod_name=${mod##*^}
				do_sync "$LOCAL_MODS_DIR/$mod_id"/ "$HOME/mods_to_copy/@${mod_name}"
		esac
	done < "$MODS_FILE"

	msg "----------- SYNCING MODS -------------"
	do_sync "$HOME/mods_to_copy"/ "$REMOTE_MODS_DIR"

	msg "copying mods.txt ..."
	cp -vf "$MODS_FILE" "$REMOTE_MODS_DIR/mods.txt"

	rm "$tempfile" 2>/dev/null ||:
	rm -rf "$HOME/mods_to_copy" 2>/dev/null ||:
}

main () {
	update_server

	for server in "$(ls "$HOME/modlists" | xargs | sed 's/\.txt//g')" ; do
		rm -rf "$HOME/.steam/debian-installation/steamapps/workshop/downloads"
		mkdir -p "$HOME/.steam/debian-installation/steamapps/workshop/downloads"
		update_mods "$server"
	done
}

main "$@"