mastodon_ynh/scripts/ynh_install_ruby__2

#!/bin/bash

ynh_ruby_try_bash_extension() {
  if [ -x src/configure ]; then
	src/configure && make -C src || {
	  ynh_print_info --message="Optional bash extension failed to build, but things will still work normally."
	}
  fi
}

rbenv_install_dir="/opt/rbenv"
ruby_version_path="$rbenv_install_dir/versions"
# RBENV_ROOT is the directory of rbenv, it needs to be loaded as a environment variable.
export RBENV_ROOT="$rbenv_install_dir"
export rbenv_root="$rbenv_install_dir"

ruby_dependencies=""
build_ruby_dependencies="libjemalloc-dev curl build-essential libreadline-dev zlib1g-dev libsqlite3-dev libssl-dev libxml2-dev libxslt-dev autoconf automake bison libtool"
pkg_dependencies="$pkg_dependencies $ruby_dependencies"
build_pkg_dependencies="$build_pkg_dependencies $build_ruby_dependencies"

# Load the version of Ruby for an app, and set variables.
#
# ynh_use_ruby has to be used in any app scripts before using Ruby for the first time.
# This helper will provide alias and variables to use in your scripts.
#
# To use gem or Ruby, use the alias `ynh_gem` and `ynh_ruby`
# Those alias will use the correct version installed for the app
# For example: use `ynh_gem install` instead of `gem install`
#
# With `sudo` or `ynh_exec_as`, use instead the fallback variables `$ynh_gem` and `$ynh_ruby`
# And propagate $PATH to sudo with $ynh_ruby_load_path
# Exemple: `ynh_exec_as $app $ynh_ruby_load_path $ynh_gem install`
#
# $PATH contains the path of the requested version of Ruby.
# However, $PATH is duplicated into $ruby_path to outlast any manipulation of $PATH
# You can use the variable `$ynh_ruby_load_path` to quickly load your Ruby version
#  in $PATH for an usage into a separate script.
# Exemple: $ynh_ruby_load_path $final_path/script_that_use_gem.sh`
#
#
# Finally, to start a Ruby service with the correct version, 2 solutions
#  Either the app is dependent of Ruby or gem, but does not called it directly.
#  In such situation, you need to load PATH
#	`Environment="__YNH_RUBY_LOAD_PATH__"`
#	`ExecStart=__FINALPATH__/my_app`
#	 You will replace __YNH_RUBY_LOAD_PATH__ with $ynh_ruby_load_path
#
#  Or Ruby start the app directly, then you don't need to load the PATH variable
#	`ExecStart=__YNH_RUBY__ my_app run`
#	 You will replace __YNH_RUBY__ with $ynh_ruby
#
#
# one other variable is also available
#   - $ruby_path: The absolute path to Ruby binaries for the chosen version.
#
# usage: ynh_use_ruby
#
# Requires YunoHost version 3.2.2 or higher.
ynh_use_ruby () {
	ruby_version=$(ynh_app_setting_get --app=$app --key=ruby_version)

	# Get the absolute path of this version of Ruby
	ruby_path="$ruby_version_path/$YNH_APP_INSTANCE_NAME/bin"

	# Allow alias to be used into bash script
	shopt -s expand_aliases

	# Create an alias for the specific version of Ruby and a variable as fallback
	ynh_ruby="$ruby_path/ruby"
	alias ynh_ruby="$ynh_ruby"
	# And gem
	ynh_gem="$ruby_path/gem"
	alias ynh_gem="$ynh_gem"

	# Load the path of this version of Ruby in $PATH
	if [[ :$PATH: != *":$ruby_path"* ]]; then
		PATH="$ruby_path:$PATH"
	fi
	# Create an alias to easily load the PATH
	ynh_ruby_load_path="PATH=$PATH"

	# Sets the local application-specific Ruby version
	pushd $final_path
		$rbenv_install_dir/bin/rbenv local $ruby_version
	popd
}

# Install a specific version of Ruby
#
# ynh_install_ruby will install the version of Ruby provided as argument by using rbenv.
#
# This helper creates a /etc/profile.d/rbenv.sh that configures PATH environment for rbenv
# for every LOGIN user, hence your user must have a defined shell (as opposed to /usr/sbin/nologin)
#
# Don't forget to execute ruby-dependent command in a login environment
# (e.g. sudo --login option)
# When not possible (e.g. in systemd service definition), please use direct path
# to rbenv shims (e.g. $RBENV_ROOT/shims/bundle)
#
# usage: ynh_install_ruby --ruby_version=ruby_version
# | arg: -v, --ruby_version= - Version of ruby to install.
#
# Requires YunoHost version 3.2.2 or higher.
ynh_install_ruby () {
	# Declare an array to define the options of this helper.
	local legacy_args=v
	local -A args_array=( [v]=ruby_version= )
	local ruby_version
	# Manage arguments with getopts
	ynh_handle_getopts_args "$@"

	# Load rbenv path in PATH
	local CLEAR_PATH="$rbenv_install_dir/bin:$PATH"

	# Remove /usr/local/bin in PATH in case of Ruby prior installation
	PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')

	# Move an existing Ruby binary, to avoid to block rbenv
	test -x /usr/bin/ruby && mv /usr/bin/ruby /usr/bin/ruby_rbenv

	# Install or update rbenv
	rbenv="$(command -v rbenv $rbenv_install_dir/bin/rbenv | grep "$rbenv_install_dir/bin/rbenv" | head -1)"
	if [ -n "$rbenv" ]; then
		ynh_print_info --message="rbenv already seems installed in \`$rbenv'."
		pushd "${rbenv%/*/*}"
			if git remote -v 2>/dev/null | grep "https://github.com/rbenv/rbenv.git"; then
				ynh_print_info --message="Trying to update with git..."
				git pull -q --tags origin master
				ynh_ruby_try_bash_extension
			else
				ynh_print_info --message="Reinstalling rbenv with git..."
				cd ..
				ynh_secure_remove --file=$rbenv_install_dir
				mkdir -p $rbenv_install_dir
				cd $rbenv_install_dir
				git init -q
				git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
				git checkout -q -b master origin/master
				ynh_ruby_try_bash_extension
				rbenv=$rbenv_install_dir/bin/rbenv
			fi
		popd
	else
		ynh_print_info --message="Installing rbenv with git..."
		mkdir -p $rbenv_install_dir
		pushd $rbenv_install_dir
			git init -q
			git remote add -f -t master origin https://github.com/rbenv/rbenv.git > /dev/null 2>&1
			git checkout -q -b master origin/master
			ynh_ruby_try_bash_extension
			rbenv=$rbenv_install_dir/bin/rbenv
		popd
	fi

	ruby_build="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-install rbenv-install | head -1)"
	if [ -n "$ruby_build" ]; then
		ynh_print_info --message="\`rbenv install' command already available in \`$ruby_build'."
		pushd "${ruby_build%/*/*}"
			if git remote -v 2>/dev/null | grep "https://github.com/rbenv/ruby-build.git"; then
				ynh_print_info --message="Trying to update rbenv with git..."
				git pull -q origin master
			fi
		popd
	else
		ynh_print_info --message="Installing ruby-build with git..."
		mkdir -p "${rbenv_install_dir}/plugins"
		git clone -q https://github.com/rbenv/ruby-build.git "${rbenv_install_dir}/plugins/ruby-build"
	fi

	rbenv_alias="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-alias rbenv-alias | head -1)"
	if [ -n "$rbenv_alias" ]; then
		ynh_print_info --message="\`rbenv alias' command already available in \`$rbenv_alias'."
		pushd "${rbenv_alias%/*/*}"
			if git remote -v 2>/dev/null | grep "https://github.com/tpope/rbenv-aliases.git"; then
				ynh_print_info --message="Trying to update rbenv-aliases with git..."
				git pull -q origin master
			fi
		popd
	else
		ynh_print_info --message="Installing rbenv-aliases with git..."
		mkdir -p "${rbenv_install_dir}/plugins"
		git clone -q https://github.com/tpope/rbenv-aliases.git "${rbenv_install_dir}/plugins/rbenv-aliase"
	fi

	rbenv_latest="$(command -v "$rbenv_install_dir"/plugins/*/bin/rbenv-latest rbenv-latest | head -1)"
	if [ -n "$rbenv_latest" ]; then
		ynh_print_info --message="\`rbenv latest' command already available in \`$rbenv_latest'."
		pushd "${rbenv_latest%/*/*}"
			if git remote -v 2>/dev/null | grep "https://github.com/momo-lab/xxenv-latest.git"; then
				ynh_print_info --message="Trying to update xxenv-latest with git..."
				git pull -q origin master
			fi
		popd
	else
		ynh_print_info --message="Installing xxenv-latest with git..."
		mkdir -p "${rbenv_install_dir}/plugins"
		git clone -q https://github.com/momo-lab/xxenv-latest.git "${rbenv_install_dir}/plugins/xxenv-latest"
	fi

	# Enable caching
	mkdir -p "${rbenv_install_dir}/cache"

	# Create shims directory if needed
	mkdir -p "${rbenv_install_dir}/shims"

	# Restore /usr/local/bin in PATH
	PATH=$CLEAR_PATH

	# And replace the old Ruby binary
	test -x /usr/bin/ruby_rbenv && mv /usr/bin/ruby_rbenv /usr/bin/ruby

	# Install the requested version of Ruby
	local final_ruby_version=$(rbenv latest --print $ruby_version)
	if ! [ -n "$final_ruby_version" ]; then
		final_ruby_version=$ruby_version
	fi
	ynh_print_info --message="Installing Ruby-$final_ruby_version"
	CONFIGURE_OPTS="--disable-install-doc --with-jemalloc" MAKE_OPTS="-j2" rbenv install --skip-existing $final_ruby_version > /dev/null 2>&1

	# Store ruby_version into the config of this app
	ynh_app_setting_set --app=$YNH_APP_INSTANCE_NAME --key=ruby_version --value=$final_ruby_version

	# Remove app virtualenv
	if  `rbenv alias --list | grep --quiet "$YNH_APP_INSTANCE_NAME " 1>/dev/null 2>&1`
	then
		rbenv alias $YNH_APP_INSTANCE_NAME --remove
	fi

	# Create app virtualenv
	rbenv alias $YNH_APP_INSTANCE_NAME $final_ruby_version

	# Cleanup Ruby versions
	ynh_cleanup_ruby

	# Set environment for Ruby users
	echo  "#rbenv
export RBENV_ROOT=$rbenv_install_dir
export PATH=\"$rbenv_install_dir/bin:$PATH\"
eval \"\$(rbenv init -)\"
#rbenv" > /etc/profile.d/rbenv.sh

	# Load the environment
	eval "$(rbenv init -)"
}

# Remove the version of Ruby used by the app.
#
# This helper will also cleanup Ruby versions
#
# usage: ynh_remove_ruby
ynh_remove_ruby () {
	local ruby_version=$(ynh_app_setting_get --app=$YNH_APP_INSTANCE_NAME --key=ruby_version)

	# Load rbenv path in PATH
	local CLEAR_PATH="$rbenv_install_dir/bin:$PATH"

	# Remove /usr/local/bin in PATH in case of Ruby prior installation
	PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')

	rbenv alias $YNH_APP_INSTANCE_NAME --remove

	# Remove the line for this app
	ynh_app_setting_delete --app=$YNH_APP_INSTANCE_NAME --key=ruby_version

	# Cleanup Ruby versions
	ynh_cleanup_ruby
}

# Remove no more needed versions of Ruby used by the app.
#
# This helper will check what Ruby version are no more required,
# and uninstall them
# If no app uses Ruby, rbenv will be also removed.
#
# usage: ynh_cleanup_ruby
ynh_cleanup_ruby () {

	# List required Ruby versions
	local installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
	local required_ruby_versions=""
	for installed_app in $installed_apps
	do
		local installed_app_ruby_version=$(ynh_app_setting_get --app=$installed_app --key="ruby_version")
		if [[ $installed_app_ruby_version ]]
		then
			required_ruby_versions="${installed_app_ruby_version}\n${required_ruby_versions}"
		fi
	done
	
	# Remove no more needed Ruby versions
	local installed_ruby_versions=$(rbenv versions --bare --skip-aliases | grep -Ev '/')
	for installed_ruby_version in $installed_ruby_versions
	do
		if ! `echo ${required_ruby_versions} | grep "${installed_ruby_version}" 1>/dev/null 2>&1`
		then
			ynh_print_info --message="Removing of Ruby-$installed_ruby_version"
			$rbenv_install_dir/bin/rbenv uninstall --force $installed_ruby_version
		fi
	done

	# If none Ruby version is required
	if [[ ! $required_ruby_versions ]]
	then
		# Remove rbenv environment configuration
		ynh_print_info --message="Removing of rbenv-$rbenv_version"
		ynh_secure_remove --file="$rbenv_install_dir"
		ynh_secure_remove --file="/etc/profile.d/rbenv.sh"
	fi
}