#!/bin/sh

# Purpose {{{
## Try to centralize all game's save that respect XDG specifications 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 XDG's
## directories to a remote directory (Nextcloud, remote mount,…).
## Then create a symlink in XDG directories to the remote game
## directory.
##
## 2. If a directory doesn't exist, check if a remote one is
## available and symlink it.
##
## KISS : Only manage save directories from XDG. For other paths (Steam, home,…)
## check other scripts.
# }}}

# Vars {{{
debug=1

## XDG config {{{
XDG_CONFIG_HOME="${HOME}/.config"
xdg_config="$(printf "%s" "${XDG_CONFIG_HOME}" | sed -e "s;${HOME}/;;")"

### List of video games for XDG CONFIG {{{

### Broforce          − unity3d − https://pcgamingwiki.com/wiki/Broforce
### Butcher           − unity3d − https://pcgamingwiki.com/wiki/Butcher
### Darkwood          − unity3d − https://pcgamingwiki.com/wiki/Darkwood
### Deadbolt          − deadbolt_game − https://www.pcgamingwiki.com/wiki/Deadbolt
### Enter the Gungeon − unity3d − https://www.pcgamingwiki.com/wiki/Enter_the_Gungeon
### Fez               − FEZ     − https://www.pcgamingwiki.com/wiki/Fez
### Full Metal Furies − Cellar Door Games − https://pcgamingwiki.com/wiki/Full_Metal_Furies
### Galak-Z The Void  − unity3d − https://www.pcgamingwiki.com/wiki/Galak-Z:_The_Dimensional
### Hyper Light Drifter − HyperLightDrifter − https://www.pcgamingwiki.com/wiki/Hyper_Light_Drifter
### Jump Gunners      − unity3d − https://pcgamingwiki.com/wiki/Jump_Gunners
### Never Alone       − unity3d − https://pcgamingwiki.com/wiki/Never_Alone
### Never Alone (bis) − unity3d − https://pcgamingwiki.com/wiki/Never_Alone
### Nuclear Throne    − nuclearthrone − https://pcgamingwiki.com/wiki/Nuclear_Throne
### Overcooked! 2     − unity3d − https://pcgamingwiki.com/wiki/Overcooked!_2
### Risk of Rain      − Risk_of_Rain − https://pcgamingwiki.com/wiki/Risk_of_Rain
### Streets of Rogue  − unity3d − https://www.pcgamingwiki.com/wiki/Streets_of_Rogue
### The Dishwasher: Vampire Smile − VampireSmile − https://pcgamingwiki.com/wiki/The_Dishwasher:_Vampire_Smile
### Tricky Towers     − unity3d − https://pcgamingwiki.com/wiki/Tricky_Towers
xdg_config_games="unity3d%Cellar Door Games%deadbolt_game%FEZ%HyperLightDrifter%nuclearthrone%Risk_of_Rain%VampireSmile"
### }}}

## }}}
## XDG data {{{
XDG_DATA_HOME="${HOME}/.local/share"
xdg_data="$(printf "%s" "${XDG_DATA_HOME}" | sed -e "s;${HOME}/;;")"

### List of video games for XDG DATA {{{
### Alien: Isolation              − feral-interactive − https://www.pcgamingwiki.com/wiki/Alien:_Isolation
### Borderlands: The Pre-Sequel   − aspyr-media − https://www.pcgamingwiki.com/wiki/Borderlands:_The_Pre-Sequel
### Borderlands 2                 − aspyr-media − https://pcgamingwiki.com/wiki/Borderlands_2
### Capsized                      − Capsized − https://pcgamingwiki.com/wiki/Capsized
### Dust: An Elysian Tail         − DustAET − https://www.pcgamingwiki.com/wiki/Dust:_An_Elysian_Tail
### Full Metal Furies             − Cellar Door Games − https://pcgamingwiki.com/wiki/Full_Metal_Furies
### HotlineMiami                  − HotlineMiami − https://pcgamingwiki.com/wiki/Hotline_Miami
### Mercenary Kings               − Tribute Games − https://pcgamingwiki.com/wiki/Mercenary_Kings
### N++                           − Metanet − https://www.pcgamingwiki.com/wiki/N%2B%2B
### PixelJunk Shooter             − PJShooter − https://pcgamingwiki.com/wiki/PixelJunk_Shooter
### Saints Row: The Third         − vpltd − https://pcgamingwiki.com/wiki/Saints_Row:_The_Third
### Saints Row IV                 − vpltd − https://pcgamingwiki.com/wiki/Saints_Row_IV
### The Dishwasher: Vampire Smile − VampireSmile − https://pcgamingwiki.com/wiki/The_Dishwasher:_Vampire_Smile
### The Swapper                   − Facepalm Games − https://pcgamingwiki.com/wiki/The_Swapper
### TowerFall Ascension           − TowerFall − https://pcgamingwiki.com/wiki/TowerFall_Ascension
xdg_data_games="feral-interactive%aspyr-media%Capsized%DustAET%Cellar Door Games%HotlineMiami%Tribute Games%Metanet%PJShooter%vpltd%VampireSmile%Facepalm Games%TowerFall"
### }}}

## }}}

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

# }}}

# Functions {{{
# Move one save game dir {{{
move_game_dir() {
	_game_name="${1}"
	_game_dir="${2}"
	_local_game_path="${HOME}/${_game_dir}/${_game_name}"
	_remote_game_path="${remote_dir}/${_game_dir}/${_game_name}"

	## 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 game − The data of ${_game_name} − ${_local_game_path} moved to remote storage."
		### Then ask to create a symbolic link to local storage
		symlink_game_dir "${_game_name}" "${_game_dir}"
	else
		printf '\e[1;35m%-6s\e[m\n' "Move game − ${_game_name} already have data on remote storage : ${_remote_game_path}. Abort to avoid to override data."
		exit 5
	fi
}
# }}}
# Symlink one save game dir from remote to local {{{
symlink_game_dir() {
	_game_name="${1}"
	_game_dir="${2}"
	_local_game_path="${HOME}/${_game_dir}/${_game_name}"
	_remote_game_path="${remote_dir}/${_game_dir}/${_game_name}"

	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 game — Symlink remote data of ${_game_name} to local storage."
		return 0
	else
		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Symlink game — ${_game_name} doesn't have remote data."
		return 1
	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 : ${remote_dir}"
	exit 1
fi
## }}}
## Ensure XDG directories exist {{{
for xdg_dir in "${xdg_config}" "${xdg_data}"; do
	local_xdg_path="${HOME}/${xdg_dir}"
	if [ ! -d "${local_xdg_path}" ]; then
		printf '\e[1;35m%-6s\e[m\n' "The XDG directory − ${xdg_dir} doesn't exists yet… Should it must be create (for restoration,…) [Y/n] ?"
		read -r create_local_xdg
		if [ "${create_local_xdg}" = "" ] || [ "${create_local_xdg}" = "Y" ] || [ "${create_local_xdg}" = "y" ]; then
			mkdir -p -- "${local_xdg_path}"
		else
			printf '\e[1;35m%-6s\e[m\n' "XDG directory (${xdg_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 XDG."

# Manage XDG config save game {{{
## Set "%" as field separator
IFS="%"
for game_name in ${xdg_config_games}; do
	local_game_path="${HOME}/${xdg_config}/${game_name}"
	local_game_path_type="$(ls -ld "${local_game_path}" 2> /dev/null | sed 's/\(^.\).*/\1/')"

	case ${local_game_path_type} in
		## Data is already a symlink
		"symbolic"|"l")
			link_name="$(file "${local_game_path}" | sed 's;.* symbolic link to \(.*\);\1;')"
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : XDG CONFIG for loop — The data of ${game_name} are already symlinked to ${link_name} . Skip."
			;;
		## Data is still a directory
		"directory"|"d")
			move_game_dir "${game_name}" "${xdg_config}"
			;;
		## Data doesn't exist
		"cannot")
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : XDG CONFIG for loop — The data of ${game_name} − ${local_game_path} doesn't exist. Skip."
			symlink_game_dir "${game_name}" "${xdg_config}"
			;;
		## Data can't be managed
		*)
			### Still try to symlink the savegame directory
			symlink_game_dir "${game_name}" "${xdg_config}"
			### If the symlink failed
			if [ "${?}" != 0 ]; then
				printf '\e[1;35m%-6s\e[m\n' "Data of ${game_name} (XDG CONFIG) − ${local_game_path} are not managed. Type: ${local_game_path_type}. Abort"
				exit 3
			fi
			;;
	esac

done
# }}}
# Manage XDG data save game {{{
## Set "%" as field separator
IFS="%"
for game_name in ${xdg_data_games}; do
	local_game_path="${HOME}/${xdg_data}/${game_name}"
	local_game_path_type="$(ls -ld "${local_game_path}" 2> /dev/null | sed 's/\(^.\).*/\1/')"

	case ${local_game_path_type} in
		## Data is already a symlink
		"symbolic"|"l")
			link_name="$(file "${local_game_path}" | sed 's;.* symbolic link to \(.*\);\1;')"
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : XDG DATA for loop — The data of ${game_name} are already symlinked to ${link_name} . Skip."
			;;
		## Data is still a directory
		"directory"|"d")
			move_game_dir "${game_name}" "${xdg_data}"
			;;
		## Data doesn't exist
		"cannot")
			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : XDG DATA for loop — The data of ${game_name} − ${local_game_path} doesn't exist. Skip."
			symlink_game_dir "${game_name}" "${xdg_data}"
			;;
		## Data can't be managed
		*)
			### Still try to symlink the savegame directory
			symlink_game_dir "${game_name}" "${xdg_data}"
			### If the symlink failed
			if [ "${?}" != 0 ]; then
				printf '\e[1;35m%-6s\e[m\n' "Data of ${game_name} (XDG DATA) − ${local_game_path} are not managed. Type: ${local_game_path_type}. Abort"
				exit 3
			fi
			;;
	esac

done
# }}}

exit 0