#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors


#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#================================================

domain=$YNH_APP_ARG_DOMAIN
admin_mastodon=$YNH_APP_ARG_ADMIN
admin_mastodon_mail=$(ynh_user_get_info $admin_mastodon 'mail')
admin_pass=$YNH_APP_ARG_PASSWD
language=$YNH_APP_ARG_LANGUAGE

path_url="/"

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

[[ ${#admin_pass} -gt 7 ]] || ynh_die "Password is too weak, must be longer than 7 characters"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path $path_url)

# Check web path availability
ynh_webpath_available $domain $path_url
# Register (book) web path
ynh_webpath_register $app $domain $path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app admin $admin_mastodon
ynh_app_setting_set $app pass $admin_pass
ynh_app_setting_set $app language $language
ynh_app_setting_set $app path $path_url


#=================================================
# STANDARD MODIFICATIONS
#=================================================


#=================================================
# INSTALL DEPENDENCIES
#=================================================

# TODO: add in a clean way backports and yarn

# Import debian archive pubkey, need on ARM arch
arch=$(uname -m)
if [[ $arch = arm*  ]]; then
	apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553
	apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7638D0442B90D010
fi

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

# Creates the destination directory and stores its location.
ynh_app_setting_set $app final_path $final_path

# Install de Node.js
# TODO: use https://github.com/YunoHost-Apps/Experimental_helpers/blob/master/ynh_install_nodejs/ynh_install_nodejs
(
	cd /opt
	curl -sL https://deb.nodesource.com/setup_6.x | bash -
	apt-get -y install nodejs
)

# TODO: use the same mecanism with other files
ynh_install_app_dependencies \
	`# debian packages ` \
	imagemagick libpq-dev libxml2-dev libxslt1-dev file curl apt-transport-https pkg-config libprotobuf-dev protobuf-compiler libicu-dev libidn11-dev \
	`# redis ` \
	redis-server redis-tools \
	`# postgresql ` \
	postgresql postgresql-contrib postgresql-server-dev-9.4 \
	`# Ruby ` \
	autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev \
	`# ffmpeg from backports ` \
	ffmpeg \
	`# Yarn ` \
	yarn

#=================================================
# CREATE A DATABASE
#=================================================

# TODO: use non-official https://github.com/YunoHost-Apps/Experimental_helpers/blob/master/postgres/postgres
# TODO: this commands doesn't looks like a requirement, you may fully remove it
# Set UTF8 encoding by default
su -c "psql" postgres <<< \
			"update pg_database set datistemplate='false' where datname='template1';"
su -c "psql" postgres <<< \
			"drop database template1;"
su -c "psql" postgres <<< \
			"create database template1 encoding='UTF8' template template0;"
su -c "psql" postgres <<< \
			"update pg_database set datistemplate='true' where datname='template1';"

# Create DB without password
ynh_psql_create_db_without_password "$app"
systemctl restart postgresql

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# TODO: dont su as $app, work root and set corrects rights at the end of install
# Download all sources rbenv, ruby and mastodon
(
	su $app
	git clone https://github.com/rbenv/rbenv.git $final_path/.rbenv
	git clone https://github.com/rbenv/ruby-build.git $final_path/.rbenv/plugins/ruby-build
	git clone https://github.com/tootsuite/mastodon.git $final_path/live
)

#=================================================
# NGINX CONFIGURATION
#=================================================

# TODO: use official helper
# Modify Nginx configuration file and copy it to Nginx conf directory
sed -i "s@__PATH__@$app@g" ../conf/nginx.conf*
sed -i "s@__FINALPATH__@$final_path@g" ../conf/nginx.conf*
cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf

#=================================================
# CREATE DEDICATED USER
#=================================================

# TODO: use official helper
# TODO: AFAIK, no app should change should be in /opt don't use it
# Create user unix
adduser $app --home /opt/$app --gecos "First Last,RoomNumber,WorkPhone,HomePhone" --disabled-password --disabled-login

# Switch branch to tagged release
cd $final_path/live
version=$(curl -s https://api.github.com/repos/tootsuite/mastodon/releases/latest | grep tag_name | cut -d\" -f4)

(
	su $app
	cd ~/live
	git checkout $version
)

# Install de rbenv
(
	su $app
	cd ~/.rbenv
	src/configure && make -C src
	echo 'export PATH="/opt/mastodon/.rbenv/bin:/opt/mastodon/live/bin:$PATH"' >> ~/.profile
	echo 'export PATH="/opt/mastodon/.rbenv/bin:/opt/mastodon/live/bin:$PATH"' >> ~/.bashrc
	echo 'eval "\$(rbenv init -)"' >> ~/.profile
)

# Install ruby-build
# TODO: /opt/mastodon looks like /opt/$app which is WRONG.
(
	su $app
	/opt/mastodon/.rbenv/bin/rbenv install 2.5.0
	/opt/mastodon/.rbenv/versions/2.5.0/bin/ruby -v
)

# Create symlink for ruby
rm /usr/bin/ruby || true
ln -s /opt/mastodon/.rbenv/versions/2.5.0/bin/ruby /usr/bin/ruby || true

# Install Mastodon
# TODO: /opt/mastodon looks like /opt/$app which is WRONG.
(
	su $app
	cd ~/live
	/opt/mastodon/.rbenv/versions/2.5.0/bin/gem install bundler
	bin/bundle install --deployment --without development test
	yarn install --production
)

# Adjust Mastodon config
# TODO: use official helper: ynh_replace_string
cp -a $final_path/live/.env.production.sample $final_path/live/.env.production
sed -i "s@REDIS_HOST=redis@REDIS_HOST=127.0.0.1@g" "${final_path}/live/.env.production"
sed -i "s@DB_HOST=db@DB_HOST=/var/run/postgresql@g" "${final_path}/live/.env.production"
sed -i "s@DB_USER=postgres@DB_USER=${app}@g" "${final_path}/live/.env.production"
sed -i "s@DB_NAME=postgres@DB_NAME=${app}_production@g" "${final_path}/live/.env.production"
sed -i "s@LOCAL_DOMAIN=example.com@LOCAL_DOMAIN=${domain}@g" "${final_path}/live/.env.production"

language="$(echo $language | head -c 2)"
sed -i "s@# DEFAULT_LOCALE=de@DEFAULT_LOCALE=${language}@g" "${final_path}/live/.env.production"

paperclip_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
secret_key_base=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
otp_secret=$(head -n128 /dev/urandom | tail -n +1 | tr -dc -d 'a-z0-9' | head -c128)
sed -i "s@PAPERCLIP_SECRET=@PAPERCLIP_SECRET=${paperclip_secret}@g" "${final_path}/live/.env.production"
sed -i "s@SECRET_KEY_BASE=@SECRET_KEY_BASE=${secret_key_base}@g" "${final_path}/live/.env.production"
sed -i "s@OTP_SECRET=@OTP_SECRET=${otp_secret}@g" "${final_path}/live/.env.production"

sed -i "s@SMTP_LOGIN=@#SMTP_LOGIN=@g" "${final_path}/live/.env.production"
sed -i "s@SMTP_PASSWORD=@#SMTP_PASSWORD=@g" "${final_path}/live/.env.production"
sed -i "s@SMTP_SERVER=smtp.mailgun.org@SMTP_SERVER=localhost@g" "${final_path}/live/.env.production"
sed -i "s@SMTP_PORT=587@SMTP_PORT=25@g" "${final_path}/live/.env.production"
sed -i 's,SMTP_FROM_ADDRESS=notifications@example.com,SMTP_FROM_ADDRESS='${admin_mastodon}'@'${domain}',' "${final_path}/live/.env.production"
sed -i "s@#SMTP_AUTH_METHOD=plain@SMTP_AUTH_METHOD=none@g" "${final_path}/live/.env.production"
sed -i "s@#SMTP_OPENSSL_VERIFY_MODE=peer@SMTP_OPENSSL_VERIFY_MODE=none@g" "${final_path}/live/.env.production"

# Preconfig CSS & JS
(
	su $app
	cd  ~/live
	echo "SAFETY_ASSURED=1">> .env.production
	RAILS_ENV=production bin/bundle exec rails db:setup
	RAILS_ENV=production bin/bundle exec rails --trace assets:precompile
)

# init rbenv & create bundle
(
	su $app
	. ~/.profile
	type rbenv
)

# TODO: use official helper ynh_add_systemd_config
cp ../conf/mastodon-web.service /etc/systemd/system/mastodon-web.service
chown root: /etc/systemd/system/mastodon-web.service
cp ../conf/mastodon-sidekiq.service /etc/systemd/system/mastodon-sidekiq.service
chown root: /etc/systemd/system/mastodon-sidekiq.service
cp ../conf/mastodon-streaming.service /etc/systemd/system/mastodon-streaming.service
chown root: /etc/systemd/system/mastodon-streaming.service

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

# Create user
(
	su $app
	cd ~/live
	RAILS_ENV=production bundle exec rails c
	account = Account.create!(username: '$admin_mastodon')
	user = User.create!(email: '$admin_mastodon_mail', password: '$admin_pass', account: account)
)

# Create administrator & confirm user
(
	su $app
	cd ~/live
	RAILS_ENV=production bin/bundle exec rails mastodon:make_admin USERNAME=$admin_mastodon
	RAILS_ENV=production bin/bundle exec rails mastodon:confirm_email USER_EMAIL=$admin_mastodon_mail
)

# Install crontab
cp ../conf/crontab_mastodon /etc/cron.d/$app
sed -i "s@__APP__@$app@g" /etc/cron.d/$app


#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# TODO:Set permissions to app files


#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

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

#=================================================
# SETUP SSOWAT
#=================================================

# TODO: all private install
# Unprotected url
ynh_app_setting_set "$app" unprotected_uris "/"

#=================================================
# RELOAD NGINX
#=================================================

# Reload Nginx
systemctl reload nginx