#!/bin/bash
# This restore script is adapted to Yunohost >=2.4

# Exit on command errors and treat unset variables as an error
set -eu

if [ ! -e .fonctions ]; then
	# Get file fonction if not been to the current directory
	sudo cp ../settings/scripts/.fonctions ./.fonctions
	sudo chmod a+rx .fonctions
fi
# Loads the generic functions usually used in the script
source .fonctions
# Source app helpers
source /usr/share/yunohost/helpers

# The parameter $app is the id of the app instance ex: ynhexample__2
app=$YNH_APP_INSTANCE_NAME

# Get old parameter of the app
domain=$(ynh_app_setting_get $app domain)
path=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)

# Check domain/path availability
sudo yunohost app checkurl "${domain}${path}" -a "$app" \
	|| ynh_die "Path not available: ${domain}${path}"

# Check $final_path
final_path="/opt/${app}"
if [ -d $final_path ]; then
	ynh_die "There is already a directory: $final_path"
fi

# Check configuration files nginx
nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
if [ -f $nginx_conf ]; then
	ynh_die "The NGINX configuration already exists at '${nginx_conf}'. 
	You should safely delete it before restoring this app."
fi
# Check configuration files php-fpm
crontab_conf="/etc/cron.d/${app}"
if [ -f $crontab_conf ]; then 
	ynh_die "The CRONTAB configuration already exists at '${crontab_conf}'. 
	You should safely delete it before restoring this app."
fi

# Restore services
web_systemd="/etc/systemd/system/${app}-web.service"
if [ -f "${web_systemd}" ]; then
	ynh_die "The MASTODON WEB configuration already exists at '${web_systemd}'. 
	You should safely delete it before restoring this app."
fi
sidekiq_systemd="/etc/systemd/system/${app}-sidekiq.service"
if [ -f "${sidekiq_systemd}" ]; then
	ynh_die "The MASTODON SIDEKIQ configuration already exists at '${sidekiq_systemd}'. 
	You should safely delete it before restoring this app."
fi
streaming_systemd="/etc/systemd/system/${app}-streaming.service"
if [ -f "${streaming_systemd}" ]; then
	ynh_die "The MASTODON STREAMING configuration already exists at '${streaming_systemd}'. 
	You should safely delete it before restoring this app."
fi

# Create user unix
sudo adduser $app --home /opt/$app --gecos "First Last,RoomNumber,WorkPhone,HomePhone" --disabled-password --disabled-login

# Reinstall dependencies
	# Install debian package
	ynh_package_install imagemagick libpq-dev libxml2-dev libxslt1-dev file curl apt-transport-https pkg-config libprotobuf-dev protobuf-compiler

	# Install redis package
	ynh_package_install redis-server redis-tools

	# Install postgresql
	ynh_package_install postgresql postgresql-contrib

	# Install Ruby
	ynh_package_install autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev

	# Install source.list debian package backports & yarn
	sudo cp ./apt_backports.list /etc/apt/sources.list.d/backports.list
	sudo curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
	sudo cp ./apt_yarn.list /etc/apt/sources.list.d/yarn.list
	ynh_package_update

	# Install debian package backports
	sudo apt-get -t jessie-backports -y install ffmpeg

	# Install de Node.js
	pushd /opt
	curl -sL https://deb.nodesource.com/setup_6.x | sudo bash -
	sudo apt-get -y install nodejs

	# Install Yarn
	ynh_package_install yarn

	# Return to home
	popd
	
 # Restore sources & data
sudo cp -a ./sources/. "$final_path"

# Set permissions
sudo chown -R $app: "$final_path"

# Debug
sudo ls -alh "$final_path"

# Set UTF8 encoding by default
sudo su -c "psql" postgres <<< \
			"update pg_database set datistemplate='false' where datname='template1';"
sudo su -c "psql" postgres <<< \
			"drop database template1;"
sudo su -c "psql" postgres <<< \
			"create database template1 encoding='UTF8' template template0;"
sudo su -c "psql" postgres <<< \
			"update pg_database set datistemplate='true' where datname='template1';"

# Create user for db postgresql
ynh_psql_create_db_without_password "$app"

# Setup database
sudo su - $app <<SCOMMANDS
cd ~/live
RAILS_ENV=production bin/bundle exec rails db:setup
SCOMMANDS

# Restore Mastodon
sudo su - $app <<RCOMMANDS
cd ~/live
RAILS_ENV=production bin/bundle exec rails db:migrate
RAILS_ENV=production bin/bundle exec rails assets:precompile
RCOMMANDS

# copy database dump
sudo cp $YNH_APP_BACKUP_DIR/mastodon_db.sql $final_path
sudo chmod a+r $final_path/mastodon_db.sql

# Restore database dump
sudo su - $app <<RECOMMANDS
dropdb mastodon_production
createdb mastodon_production
psql mastodon_production < $final_path/mastodon_db.sql
RECOMMANDS

# Remove dump
ynh_secure_remove $final_path/mastodon_db.sql

# Create symlink for ruby
sudo ln -s /opt/mastodon/.rbenv/versions/2.4.1/bin/ruby /usr/bin/ruby || true

# Restore nginx configuration files
sudo cp -a ./nginx.conf   "$nginx_conf"
# Restore crontab
sudo cp -a ./cron.conf "$crontab_conf"

sudo cp ./systemd_web.service /etc/systemd/system/mastodon-web.service
sudo chown root: /etc/systemd/system/mastodon-web.service
sudo cp ./systemd_sidekiq.service /etc/systemd/system/mastodon-sidekiq.service
sudo chown root: /etc/systemd/system/mastodon-sidekiq.service
sudo cp ./systemd_streaming.service /etc/systemd/system/mastodon-streaming.service
sudo chown root: /etc/systemd/system/mastodon-streaming.service

sudo systemctl daemon-reload
sudo systemctl enable /etc/systemd/system/mastodon-*.service
sudo systemctl start mastodon-web.service mastodon-sidekiq.service mastodon-streaming.service
# debug
sudo systemctl status mastodon-web.service mastodon-sidekiq.service mastodon-streaming.service

# Add service YunoHost
sudo yunohost service add mastodon-web
sudo yunohost service add mastodon-sidekiq
sudo yunohost service add mastodon-streaming

# Reload services
sudo systemctl reload nginx