#!/bin/bash

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

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

#=================================================
# 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"

# TODO: remove this test, don't as password anymore, generate it and send it by email to admin with: https://github.com/YunoHost-Apps/Experimental_helpers/tree/master/send_readme_to_admin
[[ ${#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
if [ "$(lsb_release --codename --short)" == "jessie" ]; then
	echo "deb http://httpredir.debian.org/debian jessie-backports main" | tee /etc/apt/sources.list.d/jessie-backports.list
fi
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
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 \
	`# 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

ynh_psql_test_if_first_run

db_user=$(ynh_sanitize_dbid "$app")
db_name="${app}_production"
db_name=$(ynh_sanitize_dbid "$db_name")
db_pwd=$(ynh_string_random)
ynh_app_setting_set $app db_name $db_name
ynh_app_setting_set $app db_pwd $db_pwd
ynh_psql_setup_db "$db_user" "$db_name" "$db_pwd"

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

# Download all sources rbenv, ruby and mastodon

ynh_setup_source "$final_path/.rbenv"                    "app-rbenv"
ynh_setup_source "$final_path/.rbenv/plugins/ruby-build" "app-ruby-build"
ynh_setup_source "$final_path/live"                      "app-mastodon"

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

# TODO: use official helper ynh_add_nginx_config
# 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 ynh_system_user_create
# Create user unix
adduser $app --home $final_path --gecos "First Last,RoomNumber,WorkPhone,HomePhone" --disabled-password

chown -R "$app" "$final_path"

# TODO: try to use ynh_install_ruby from https://github.com/YunoHost-Apps/Experimental_helpers
# Install de rbenv
(
	cd $final_path/.rbenv
	src/configure && make -C src

	echo "export PATH=\"$final_path/.rbenv/bin:$final_path/live/bin:\$PATH\"
eval \"\$(rbenv init -)\"" > $final_path/.profile
	echo "export PATH=\"$final_path/.rbenv/bin:$final_path/live/bin:\$PATH\"" > $final_path/.bashrc
)

# Install ruby-build
(
	exec_as "$app" $final_path/.rbenv/bin/rbenv install 2.5.1
	exec_as "$app" $final_path/.rbenv/bin/rbenv global 2.5.1
	exec_as "$app" $final_path/.rbenv/versions/2.5.1/bin/ruby -v
)

# Create symlink for ruby
rm /usr/bin/ruby || true
ln -s $final_path/.rbenv/versions/2.5.1/bin/ruby /usr/bin/ruby || true

# Adjust Mastodon config
# TODO: use official helper ynh_replace_string
# TODO: save the config file in conf folder, to make replacement easier to read
# TODO: use ynh_string_random
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" "${final_path}/live/.env.production"
sed -i "s@DB_USER=postgres@DB_USER=${db_user}@g" "${final_path}/live/.env.production"
sed -i "s@DB_NAME=postgres@DB_NAME=${db_name}@g" "${final_path}/live/.env.production"
sed -i "s@DB_PASS=@DB_PASS=${db_pwd}@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
# Install Mastodon
(
	cd "$final_path/live"
	su mastodon <<INSTALL
		$final_path/.rbenv/versions/2.5.1/bin/gem install bundler
		$final_path/live/bin/bundle install -j$(getconf _NPROCESSORS_ONLN) --deployment --without development test --quiet
		yarn install --production --no-progress --non-interactive --silent
		echo "SAFETY_ASSURED=1">> .env.production
		RAILS_ENV=production $final_path/live/bin/bundle exec rails db:migrate --quiet
		RAILS_ENV=production $final_path/live/bin/bundle exec rails assets:precompile --quiet
INSTALL
)

# TODO: use ynh_find_port to have generic port selection for RAILS
ynh_add_systemd_config "$app-web"       "mastodon-web.service"
# TODO: use ynh_find_port to have generic port selection for NODES
ynh_add_systemd_config "$app-sidekiq"   "mastodon-sidekiq.service"
ynh_add_systemd_config "$app-streaming" "mastodon-streaming.service"

systemctl start "$app-web.service" "$app-sidekiq.service" "$app-streaming.service"

# Create user
(
	cd "$final_path/live"
	su mastodon <<CREATEUSER
RAILS_ENV=production bin/bundle exec rails c
account = Account.create!(username: '$admin_mastodon')
user = User.create!(email: '$admin_mastodon_mail', password: '$admin_pass', account: account)
CREATEUSER
	su mastodon <<SETADMIN
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
SETADMIN
)

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

# TODO:Set permissions to app files
chown -R "$app" "$final_path"

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

# Add service YunoHost
yunohost service add "$app-web"
yunohost service add "$app-sidekiq"
yunohost service add "$app-streaming"

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

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

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

# Reload Nginx
systemctl reload nginx