Prepare a script to manage extra save games in home

aka save path outside of XDG or Steam.

games/save.game.home

@@ -0,0 +1,124 @@
+#!/bin/sh
+
+# Purpose {{{
+## Try to centralize all game's save that doesn't respect XDG specifications
+## or Steam directories 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 homedir (or subdir)
+## to a remote directory (Nextcloud, remote mount,…).
+## Then create a symlink in home directory 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 home directory (or subdir).
+## For other paths (Steam,…) check other scripts.
+# }}}
+
+# Vars {{{
+debug=0
+
+## List of video games for homedir {{{
+### Give the relative path from homedir.
+### Separate each path with "%" to be able to manage white space, eg :
+### .mygame%.first-subtree/save of GAMEX
+###
+games_list="..."
+## }}}
+
+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 ${_game_name} to local storage."
+	else
+		[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Symlink game — ${_game_name} doesn't have remote data."
+	fi
+}
+# }}}
+
+# }}}
+
+# Tests {{{
+
+## Ensure remote dir exist {{{
+if [ ! -d "${remote_dir}" ]; then
+	printf '\e[1;35m%-6s\e[m\n' "The directory for save game doesn't exists : ${remote_dir}"
+	exit 1
+fi
+## }}}
+
+# }}}
+
+# Manage save game from homedir {{{
+## Set "%" as field separator
+IFS="%"
+for game_path in ${games_list}; do
+	local_game_path="${HOME}/${game_path}"
+	local_game_path_type="$(ls -ld "${local_game_path}" | sed 's/\(^.\).*/\1/')"
+
+	game_name="$(basename "${game_path}")"
+	game_dir="$(direname "${game_path}")"
+
+	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 : Homedir for loop — The data of ${game_path} are already symlinked to ${link_name} . Skip."
+			;;
+		## Data is still a directory
+		"directory"|"d")
+			move_game_dir "${game_name}" "${game_dir}"
+			;;
+		## Data doesn't exist
+		"cannot")
+			[ "${debug}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Homedir for loop — The data of ${game_path} − ${local_game_path} doesn't exist. Skip."
+			symlink_game_dir "${game_name}" "${game_dir}"
+			;;
+		## Data can't be managed
+		*)
+			printf '\e[1;35m%-6s\e[m\n' "Data of ${game_path} (Homedir) − ${local_game_path} are not managed. Type: ${local_game_path_type}. Abort"
+			exit 3
+			;;
+	esac
+
+done
+# }}}
+
+exit 0