#!/bin/sh

# Purpose {{{
## Try to centralize all game's save in order to :
##	easily backup all save
##	easily restore it
##	be able to access it from anywhere
##	… all you can do with a Nextcloud (share, versionning,…)
##
## 1. Move save directories of a list of known games from Steam's userdata,
## common or compatdata directories to a remote directory (Nextcloud, remote
## mount,…).
## Then create a symlink in userdata, common or compatdata Steam directory to
## the remote game directory.
##
## 2. If a directory doesn't exist, check if a remote one is
## available and symlink it.
##
## 3. List userdata subdirectories without symlinks.
##
## KISS : Only manage save directories from Steam's directories. For other
## paths ($XDG_DATA_HOME,…) check other scripts.
# }}}

# Vars {{{
debug=1

## Steam
steam_id="112595584"
steam_userdata=".steam/steam/userdata/${steam_id}"
steam_compatdata=".steam/steam/steamapps/compatdata"
steam_common=".steam/steam/steamapps/common"

## List of Steam saves in userdata to backup {{{
### 550    − Left 4 Dead 2 − https://www.pcgamingwiki.com/wiki/Left_4_Dead_2
### 760    − Steam Screenshots − https://steamdb.info/app/760/
### 35140  − Batman: Arkham Asylum − https://www.pcgamingwiki.com/wiki/Batman:_Arkham_Asylum
### 35700  − Trine Enchanted Edition − https://pcgamingwiki.com/wiki/Trine_Enchanted_Edition
### 35720  − Trine 2 Complete Story − https://pcgamingwiki.com/wiki/Trine_2
### 55230  − Saints Row: The Third − https://pcgamingwiki.com/wiki/Saints_Row:_The_Third
### 107100 − Bastion − https://www.pcgamingwiki.com/wiki/Bastion
### 113020 − Monaco − https://www.pcgamingwiki.com/wiki/Monaco:_What%27s_Yours_Is_Mine
### 200260 − Batman: Arkham City − https://www.pcgamingwiki.com/wiki/Batman:_Arkham_City
### 204360 − Castle Crashers − https://pcgamingwiki.com/wiki/Castle_Crashers
### 206420 − Saints Row IV − https://pcgamingwiki.com/wiki/Saints_Row_IV
### 207140 − SpeedRunners − https://www.pcgamingwiki.com/wiki/SpeedRunners
### 209000 − Batman: Arkham Origins − https://www.pcgamingwiki.com/wiki/Batman:_Arkham_Origins
### 214490 − Alien: Isolation − https://www.pcgamingwiki.com/wiki/Alien:_Isolation
### 218820 − Mercenary Kings − https://pcgamingwiki.com/wiki/Mercenary_Kings
### 220440 − DmC: Devil May Cry − https://www.pcgamingwiki.com/wiki/DmC:_Devil_May_Cry
### 224760 − Fez − https://www.pcgamingwiki.com/wiki/Fez
### 230270 − N++ − https://www.pcgamingwiki.com/wiki/N%2B%2B
### 242760 − The Forest − https://www.pcgamingwiki.com/wiki/The_Forest
### 247080 − Crypt of the Necrodancer − https://pcgamingwiki.com/wiki/Crypt_of_the_Necrodancer
### 255870 − PixelJunk Shooter − https://pcgamingwiki.com/wiki/PixelJunk_Shooter
### 269210 − Hero Siege − https://www.pcgamingwiki.com/wiki/Hero_Siege#Save_game_data_location
### 293780 − Crawl − https://www.pcgamingwiki.com/wiki/Crawl
### 312530 − Duck Game − https://pcgamingwiki.com/wiki/Duck_Game
### 312670 − Strange Brigade − https://www.pcgamingwiki.com/wiki/Strange_Brigade
### 330020 − Children of Morta − https://www.pcgamingwiki.com/wiki/Children_of_Morta
### 359840 − Shift Happens − https://pcgamingwiki.com/wiki/Shift_Happens
### 477160 − Human: Fall Flat − https://www.pcgamingwiki.com/wiki/Human:_Fall_Flat
### 534550 − Guacamelee! 2 − https://www.pcgamingwiki.com/wiki/Guacamelee!_2
### 572890 − Pikuniku − https://www.pcgamingwiki.com/wiki/Pikuniku
### 690640 − Trine 4 − https://pcgamingwiki.com/wiki/Trine_4:_The_Nightmare_Prince
steam_userdata_games="550 760 35140 35700 35720 55230 107100 113020 200260 204360 206420 207140 209000 214490 218820 224760 230270 220440 247080 242760 255870 269210 293780 312530 312670 359840 477160 534550 572890 690640"
## }}}
## Pattern of Steam saves in common to backup {{{
### Add the directory name of the game and the directory|file name to backup
### separated by a slash.
### To be able to manage white space in directory name, the field separator is %.
### eg. GAME NAME/data.save%other game/*.sav
### 620 − Portal 2 − https://pcgamingwiki.com/wiki/Portal_2 (solo only, multiplayer is on Steam cloud)
### 113020 − Monaco − https://www.pcgamingwiki.com/wiki/Monaco:_What%27s_Yours_Is_Mine
### 251470 − TowerFall Ascension − https://pcgamingwiki.com/wiki/TowerFall_Ascension (not managed cause no substree, check $XDG_DATA_HOME)
### 274190 − Broforce − https://pcgamingwiki.com/wiki/Broforce
### 300580 − Galak-Z The Void − https://www.pcgamingwiki.com/wiki/Galak-Z:_The_Dimensional
steam_common_games_pattern="Portal 2/*.sav%Monaco/*.xml%Broforce/*.sav%Galak-Z/*.dat"
# }}}
## Pattern of Steam saves in compatdata to backup {{{
### Compatdata contains directories for games using Steam play so it's too big
### to be fully moved to a remote storage.
### Add the game id and the directory|file name to backup separated by a slash.
### And, to be able to manage white space in pattern name, the field separator is %.
### eg. GAME_ID/savedata.xml%GAME_ID42/user.bin
### 213670  − South Park: The Stick of Truth − https://pcgamingwiki.com/wiki/South_Park:_The_Stick_of_Truth
### 242760  − The Forest − https://www.pcgamingwiki.com/wiki/The_Forest
### 312610  − Metal Slug X − https://pcgamingwiki.com/wiki/Metal_Slug_X
### 312670  − Strange Brigade − https://www.pcgamingwiki.com/wiki/Strange_Brigade
### 322210  − Guns, Gore & Cannoli − https://www.pcgamingwiki.com/wiki/Guns,_Gore_%26_Cannoli
### 359840  − Shift Happens − https://pcgamingwiki.com/wiki/Shift_Happens (don't work yet)
### 379720  − Doom (2016) − https://www.pcgamingwiki.com/wiki/Doom_(2016)
### 387290  − Ori and the Blind Forest: Definitive Edition − https://www.pcgamingwiki.com/wiki/Ori_and_the_Blind_Forest:_Definitive_Edition
### 414340  − Hellblade: Senua's Sacrifice − https://www.pcgamingwiki.com/wiki/Hellblade:_Senua%27s_Sacrifice
### 471810  − Death Squared − https://www.pcgamingwiki.com/wiki/Death_Squared
### 480490  − Prey (2017) − https://pcgamingwiki.com/wiki/Prey_(2017) (don't work yet)
### 548430  − Deep Rock Galactic − https://www.pcgamingwiki.com/wiki/Deep_Rock_Galactic
### 686200  − Door Kickers: Action Squad − https://pcgamingwiki.com/wiki/Door_Kickers:_Action_Squad
### 1104660 − MO: Astray − https://pcgamingwiki.com/wiki/MO:_Astray
steam_compatdata_games_pattern="213670/save%242760/TheForest%312610/UserDefault.xml%312670/PC_ProfileSaves%322210/AdvancedPlayerPrefs.txt%379720/GAME-AUTOSAVE0%387290/saveFile0.sav%414340/SaveGames%471810/ds_save.dat%548430/Saved%686200/userdata.bin%1104660/Unity"
# }}}
## Ids without backups in userdata {{{
### 7 − Unknown
### 49520   − Borderlands 2 − https://pcgamingwiki.com/wiki/Borderlands_2
### 219150  − Hotline Miami − https://pcgamingwiki.com/wiki/Hotline_Miami
### 232090  − Killing Floor 2 − https://www.pcgamingwiki.com/wiki/Killing_Floor_2
### 236090  − Dust: An Elysian Tail − https://www.pcgamingwiki.com/wiki/Dust:_An_Elysian_Tail
### 241100  − Steam Controller Configs − https://steamdb.info/app/241100/
### 261640  − Borderlands: The Pre-Sequel − https://www.pcgamingwiki.com/wiki/Borderlands:_The_Pre-Sequel
### 242680  − Nuclear Throne − https://pcgamingwiki.com/wiki/Nuclear_Throne
### 251470  − TowerFall Ascension − https://pcgamingwiki.com/wiki/TowerFall_Ascension
### 255870  − PixelJunk Shooter − https://pcgamingwiki.com/wiki/PixelJunk_Shooter
### 268990  − The Dishwasher: Vampire Smile − https://pcgamingwiki.com/wiki/The_Dishwasher:_Vampire_Smile
### 274190  − Broforce − https://pcgamingwiki.com/wiki/Broforce
### 295790  − Never Alone − https://pcgamingwiki.com/wiki/Never_Alone
### 300580  − Galak-Z The Void − https://www.pcgamingwiki.com/wiki/Galak-Z:_The_Dimensional
### 311690  − Enter the Gungeon − unity3d − https://www.pcgamingwiki.com/wiki/Enter_the_Gungeon
### 322210  − Guns, Gore & Cannoli − https://www.pcgamingwiki.com/wiki/Guns,_Gore_%26_Cannoli
### 323850  − Move or Die − https://www.pcgamingwiki.com/wiki/Move_or_Die
### 379720  − Doom (2016) − https://www.pcgamingwiki.com/wiki/Doom_(2016)
### 386940  − Ultimate Chicken Horse − https://www.pcgamingwiki.com/wiki/Ultimate_Chicken_Horse
### 387290  − Ori and the Blind Forest: Definitive Edition − https://www.pcgamingwiki.com/wiki/Ori_and_the_Blind_Forest:_Definitive_Edition
### 414340  − Hellblade: Senua's Sacrifice − https://www.pcgamingwiki.com/wiki/Hellblade:_Senua%27s_Sacrifice
### 416600  − Full Metal Furies − https://pcgamingwiki.com/wiki/Full_Metal_Furies
### 445980  − Wizard of Legend − https://www.pcgamingwiki.com/wiki/Wizard_of_Legend
### 460790  − Bayonetta − https://www.pcgamingwiki.com/wiki/Bayonetta
### 471810  − Death Squared − https://www.pcgamingwiki.com/wiki/Death_Squared
### 474210  − Butcher − https://pcgamingwiki.com/wiki/Butcher
### 504230  − Celeste − https://www.pcgamingwiki.com/wiki/Celeste
### 512900  − Streets of Rogue − https://www.pcgamingwiki.com/wiki/Streets_of_Rogue
### 548430  − Deep Rock Galactic − https://www.pcgamingwiki.com/wiki/Deep_Rock_Galactic
### 554600  − Learn Japanese To Survive! Katakana War − https://www.pcgamingwiki.com/wiki/Learn_Japanese_To_Survive!_Katakana_War
### 697660  − Jump Gunners − https://pcgamingwiki.com/wiki/Jump_Gunners
### 728880  − Overcooked! 2 − https://pcgamingwiki.com/wiki/Overcooked!_2
### 750920  − Shadow of the Tomb Raider − https://www.pcgamingwiki.com/wiki/Shadow_of_the_Tomb_Raider
### 892970  − Valheim − https://www.pcgamingwiki.com/wiki/Valheim
### 1104660 − MO: Astray − https://pcgamingwiki.com/wiki/MO:_Astray
ignore_pattern_steam_id="(7|620|49520|55230|213670|219150|232090|236090|261640|241100|242680|251470|255870|268990|274190|295790|300580|311690|322210|323850|379720|386940|387290|414340|416600|445980|460790|471810|474210|504230|480490|512900|548430|554600|686200|697660|728880|750920|892970|1104660|config|inventorymsgcache|ugc|ugcmsgcache|\.)$"
## }}}

remote_dir="${HOME}/Nextcloud/games/linux.sgl.script"

local_unmanaged_games_list="/tmp/unmanaged_games_list"
# }}}

# Functions {{{
# Move one Steam save game dir {{{
move_steam_game_dir() {
	_game_id="${1}"
	_steam_dir="${2}"
	_local_game_path="${HOME}/${_steam_dir}/${_game_id}"
	_remote_game_path="${remote_dir}/${_steam_dir}/${_game_id}"

	## If a remote directory doesn't already exists for this game
	if [ ! -d "${_remote_game_path}" ]; then
		### Ensure to create tree directories on remote storage
		mkdir -p -- "$(dirname "${_remote_game_path}")"
		### Move data to remote storage
		mv -- "${_local_game_path}" "${_remote_game_path}"
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Move Steam game − The data of ${_game_id} − ${_local_game_path} moved to remote storage."
		### Then ask to create a symbolic link to local storage
		symlink_steam_game_dir "${_game_id}" "${_steam_dir}"
	else
		printf '\e[1;35m%-6s\e[m\n' "Move Steam game − ${_game_id} already have data on remote storage : ${_remote_game_path}. Abort to avoid to override data."
		exit 5
	fi
}
# }}}
# Symlink one Steam save game dir from remote to local {{{
symlink_steam_game_dir() {
	_game_id="${1}"
	_steam_dir="${2}"
	_local_game_path="${HOME}/${_steam_dir}/${_game_id}"
	_remote_game_path="${remote_dir}/${_steam_dir}/${_game_id}"

	if [ -d "${_remote_game_path}" ]; then
		ln -s -- "${_remote_game_path}" "${_local_game_path}"
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Symlink Steam game — Symlink remote data of ${_game_id} to local storage."
	else
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Symlink Steam game — ${_game_id} doesn't have remote data."
	fi
}
# }}}

# }}}

# Tests {{{

## Ensure remote dir exist {{{
if [ ! -d "${remote_dir}" ]; then
	printf '\e[1;35m%-6s\e[m\n' "The directory for save game doesn't exists : ${remote_dir}"
	exit 1
fi
## }}}
## Ensure Steam directories exist {{{
for steam_dir in "${steam_userdata}" "${steam_common}" "${steam_compatdata}"; do
	local_steam_path="${HOME}/${steam_dir}"
	if [ ! -d "${local_steam_path}" ]; then
		printf '\e[1;35m%-6s\e[m\n' "The Steam directory − ${steam_dir} for your ID (${steam_id}) doesn't exists yet… Should it must be create (for restoration,…) [Y/n] ?"
		read -r create_local_steam_userdata
		if [ "${create_local_steam_userdata}" = "" ] || [ "${create_local_steam_userdata}" = "Y" ] || [ "${create_local_steam_userdata}" = "y" ]; then
			mkdir -p -- "${local_steam_path}"
		else
			printf '\e[1;35m%-6s\e[m\n' "Steam directory (${steam_dir}) doesn't exists, abort script."
			exit 2
		fi
	fi
done
## }}}

# }}}

		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Run save game script for Steam."

# Manage Steam userdata save game {{{
for game_id in ${steam_userdata_games}; do
	local_game_path="${HOME}/${steam_userdata}/${game_id}"
	local_game_path_type="$(file "${local_game_path}" | cut -d' ' -f2)"

	case ${local_game_path_type} in
		## Data is already a symlink
		"symbolic")
			link_name="$(file "${local_game_path}" | sed 's;.* symbolic link to \(.*\);\1;')"
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam userdata for loop — The data of ${game_id} are already symlinked to ${link_name} . Skip."
			;;
		## Data is still a directory
		"directory")
			move_steam_game_dir "${game_id}" "${steam_userdata}"
			;;
		## Data doesn't exist
		"cannot")
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam userdata for loop — The data of ${game_id} − ${local_game_path} doesn't exist. Skip."
			symlink_steam_game_dir "${game_id}" "${steam_userdata}"
			;;
		## Data can't be managed
		*)
			printf '\e[1;35m%-6s\e[m\n' "Data of ${game_id} (userdata) − ${local_game_path} are not managed. Type: ${local_game_path_type}. Abort"
			exit 3
			;;
	esac

done
# }}}
# Manage Steam common save game {{{
IFS="%"
for game_pattern in ${steam_common_games_pattern}; do
	## Separate the game_name and the directory|file to backup|symlink
	game_name="$(echo "${game_pattern}" | cut -d"/" -f1)"
	save_pattern="$(echo "${game_pattern}" | cut -d"/" -f2)"

	## If the game is installed
	if [ -d "${HOME}/${steam_common}/${game_name}" ]; then

		### Follow symbolic links but avoid links to dosdevices and keep only one result
		temp_local_save_path="$(find -L "${HOME}/${steam_common}/${game_name}" -iname "${save_pattern}" -print -quit)"
		local_save_path="$(dirname "${temp_local_save_path}")"
		local_save_path_type="$(ls -ld "${local_save_path}" | sed 's/\(^.\).*/\1/')"
		## Path independent from local or remote base directory
		steam_dir="$(printf "%s" "${local_save_path}" | sed -e "s;${HOME}/;;")"

		## Print vars {{{
		#if [ "${debug}" -eq "0" ]; then
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : game name : ${game_name}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : save pattern : ${save_pattern}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : temp local save path : ${temp_local_save_path}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : local save path : ${local_save_path}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : local save type : ${local_save_path_type}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : steam dir : ${steam_dir}"
		#fi
		## }}}

		case ${local_save_path_type} in
			## Data is already a symlink
			"symbolic"|"symboliclink"|"l")
				link_name="$(file "${local_save_path}" | sed 's;.* symbolic link to \(.*\);\1;')"
				[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam common for loop — The data of ${game_name} are already symlinked to ${link_name} . Skip."
				;;
			## Data is still a directory, try to move it
			"directory"|"d")
				move_steam_game_dir "$(basename "${steam_dir}")" "$(dirname "${steam_dir}")"
				;;
			## Data doesn't exist
			"cannot")
				[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam common for loop — The data of ${game_name} − ${local_save_path} doesn't exist. Skip."
				### TODO : Try to symlink
				;;
			## Data can't be managed
			*)
				printf '\e[1;35m%-6s\e[m\n' "Data of ${game_name} (common) − ${local_save_path} are not managed. Type: ${local_save_path_type}. Abort."
				exit 3
				;;
		esac
	else ## The game is not present on the system
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam common for loop — ${game_name} doesn't seems to be installed on the system, check the path : ${HOME}/${steam_common}/${game_name} . Skip."
	fi

done
# }}}
# Manage Steam compatdata save game {{{
IFS="%"
for game_pattern in ${steam_compatdata_games_pattern}; do
	## Separate the game_id and the directory|file to backup|symlink
	game_id="$(echo "${game_pattern}" | cut -d"/" -f1)"
	save_pattern="$(echo "${game_pattern}" | cut -d"/" -f2)"

	## If the game is installed
	if [ -d "${HOME}/${steam_compatdata}/${game_id}" ]; then

		### Follow symbolic links but avoid links to dosdevices and keep only one result
		temp_local_save_path="$(find -L "${HOME}/${steam_compatdata}/${game_id}" -ipath "*dosdevices*" -prune -o -iname "${save_pattern}" | grep -v "dosdevices" | head -n 1)"
		### Verify if the previous command successfully return an existing path
		if [ ! -e "${temp_local_save_path}" ]; then
			printf '\e[1;35m%-6s\e[m\n' "Data of ${game_id} (compatdata) − Can't find the path to ${save_pattern} pattern. Result of find : ${temp_local_save_path} . Abort."
			exit 3
		fi

		local_save_path="$(dirname "${temp_local_save_path}")"
		local_save_path_type="$(ls -ld "${local_save_path}" | sed 's/\(^.\).*/\1/')"
		## Path independent from local or remote base directory
		steam_dir="$(printf "%s" "${local_save_path}" | sed -e "s;${HOME}/;;")"

		## Print vars {{{
		#if [ "${debug}" -eq "0" ]; then
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : game ID : ${game_id}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : save pattern : ${save_pattern}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : temp local save path : ${temp_local_save_path}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : local save path : ${local_save_path}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : local save type : ${local_save_path_type}"
			#printf '\e[1;35m%-6s\e[m\n' "DEBUG : steam dir : ${steam_dir}"
		#fi
		## }}}

		case ${local_save_path_type} in
			## Data is already a symlink
			"symbolic"|"symboliclink"|"l")
				link_name="$(file "${local_save_path}" | sed 's;.* symbolic link to \(.*\);\1;')"
				[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam compatdata for loop — The data of ${game_id} are already symlinked to ${link_name} . Skip."
				;;
			## Data is still a directory, try to move it
			"directory"|"d")
				[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Data of ${game_id} (compatdata) − Try to move ${local_save_path} to remote share."
				move_steam_game_dir "$(basename "${steam_dir}")" "$(dirname "${steam_dir}")"
				;;
			## Data doesn't exist
			"cannot")
				[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam compatdata for loop — The data of ${game_id} − ${local_save_path} doesn't exist. Skip."
				### TODO : Try to symlink
				;;
			## Data can't be managed
			*)
				printf '\e[1;35m%-6s\e[m\n' "Data of ${game_id} (compatdata) − ${local_save_path} are not managed. Type: ${local_save_path_type}. Abort."
				exit 3
				;;
		esac
	else ## The game is not present on the system
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Steam compatdata for loop — ${game_id} doesn't seems to be installed on the system. Skip."
	fi

done
# }}}
# List userdata unmanage game id {{{
cd -- "${HOME}/${steam_userdata}" || exit 1
rm -f -- "${local_unmanaged_games_list}"
find . -maxdepth 1 -type d | grep -vE "${ignore_pattern_steam_id}" > "${local_unmanaged_games_list}"
if [ -s "${local_unmanaged_games_list}" ]; then
	printf '\e[1;35m%-6s\e[m\n' "List of unmanaged directories :"
	cat "${local_unmanaged_games_list}"
fi
rm -f -- "${local_unmanaged_games_list}"
cd -- - > /dev/null || exit 1
# }}}

exit 0