#!/bin/bash

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

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

upgrade_type=$(ynh_check_app_version_changed)
config="$install_dir/live/.env.production"

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# Set `service` settings to support `yunohost app shell` command
if [[ -z "${service:-}" ]]; then
	service="$app-web.service"
	ynh_app_setting_set --app="$app" --key=service --value="$service"
fi

# Remove previous added repository
ynh_remove_extra_repo

if ynh_compare_current_package_version --comparison lt --version "4.2.8~ynh2"; then
	# Rename legacy database
	if ynh_psql_database_exists --database="${app}_production"; then
		db_name=$(ynh_sanitize_dbid --db_name="$app")
		ynh_app_setting_set --app="$app" --key="db_name" --value="$db_name"

		# Remove the newly created db by resources, and rename legacy db
		ynh_psql_execute_as_root --sql="DROP DATABASE IF EXISTS ${app};"
		ynh_psql_execute_as_root --sql="ALTER DATABASE ${app}_production RENAME TO $db_name;"
	fi
	# Same with user
	if ynh_psql_user_exists --user="${app}_production"; then
		db_user="$db_name"
		ynh_app_setting_set --app="$app" --key="db_user" --value="$db_user"

		ynh_psql_execute_as_root --sql="DROP USER IF EXISTS ${app};"
		ynh_psql_execute_as_root --sql="ALTER USER ${app}_production RENAME $db_name;"
	fi
fi

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

if ynh_compare_current_package_version --comparison lt --version "4.2.8~ynh2"; then
	# Workaround for pre-packagingv2 versions
	ynh_systemd_action --service_name=${app}-web --action="stop" --log_path="systemd" --line_match="Goodbye"
	ynh_systemd_action --service_name=${app}-sidekiq --action="stop" --log_path="systemd" --line_match="Bye"
	ynh_systemd_action --service_name=${app}-streaming --action="stop" --log_path="systemd" --line_match="exiting"
else
	ynh_systemd_action --service_name=${app}-web --action="stop" --log_path=/var/log/$app/$app-web.log --line_match="Goodbye"
	ynh_systemd_action --service_name=${app}-sidekiq --action="stop" --log_path=/var/log/$app/$app-sidekiq.log --line_match="Bye"
	ynh_systemd_action --service_name=${app}-streaming --action="stop" --log_path=/var/log/$app/$app-streaming.log --line_match="exiting"
fi

#=================================================
# ADD SWAP IF NEEDED
#=================================================
ynh_script_progression --message="Adding swap if needed..." --weight=1

total_memory=$(ynh_get_ram --total)
swap_needed=0

if [ $total_memory -lt $memory_needed ]; then
	# Need a minimum of 8Go of memory
	swap_needed=$(($memory_needed - $total_memory))
fi

ynh_script_progression --message="Adding $swap_needed Mo to swap..."
ynh_add_swap --size=$swap_needed

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading Ruby and NodeJS..." --weight=1

ynh_exec_warn_less ynh_install_ruby --ruby_version=$ruby_version
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

#=================================================
# "REBUILD" THE APP (DEPLOY NEW SOURCES, RERUN NPM BUILD...)
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=1

	# Download Mastodon
	ynh_setup_source --dest_dir="$install_dir/live" --keep="public/system/"

	chmod 750 "$install_dir"
	chmod -R o-rwx "$install_dir"
	chown -R $app:www-data "$install_dir"
fi

#=================================================
# BUILD ASSETS
#=================================================
ynh_script_progression --message="Building assets..." --weight=1

pushd "$install_dir/live"
	ynh_use_ruby
	ynh_gem update --system
	ynh_gem install bundler --no-document
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config deployment 'true'
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config without 'development test'
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle config set force_ruby_platform true --quiet
	ynh_exec_as $app $ynh_ruby_load_path $ld_preload bin/bundle install -j$(getconf _NPROCESSORS_ONLN)
	ynh_use_nodejs
	ynh_exec_as $app $ynh_node_load_PATH yarn install --pure-lockfile --production --network-timeout 600000
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails assets:clean
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails assets:precompile
popd

chown "$app:www-data" "$install_dir"
chown -R "$app:www-data" "$install_dir/live/public"

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1

ynh_add_nginx_config

# Create a dedicated systemd config
ynh_add_systemd_config --service="$app-web" --template="mastodon-web.service"
yunohost service add "$app-web" --description="$app web service"

ynh_add_systemd_config --service="$app-sidekiq" --template="mastodon-sidekiq.service"
yunohost service add "$app-sidekiq" --description="$app sidekiq service"

ynh_add_systemd_config --service="$app-streaming" --template="mastodon-streaming.service"
yunohost service add "$app-streaming" --description="$app streaming service"

ynh_add_config --template="cron" --destination="/etc/cron.d/$app"

# Use logrotate to manage app-specific logfile(s)
mkdir -p /var/log/$app
chown $app:$app /var/log/$app
ynh_use_logrotate --non-append

#=================================================
# RECONFIGURE THE APP (UPDATE CONF, APPLY MIGRATIONS...)
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a config file..." --weight=1

language="$(echo $language | head -c 2)"

ynh_add_config --template=".env.production.sample" --destination="$config"

chmod 400 "$config"
chown $app:$app "$config"

#=================================================
# APPLY MIGRATIONS
#=================================================
ynh_script_progression --message="Applying migrations..." --weight=1

pushd "$install_dir/live"
	ynh_use_ruby
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/bundle exec rails db:migrate
	ynh_exec_warn_less ynh_exec_as $app RAILS_ENV=production $ynh_ruby_load_path $ld_preload bin/tootctl cache clear
popd

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

ynh_systemd_action --service_name=${app}-web --action="restart" --log_path=/var/log/$app/$app-web.log --line_match="Listening on"
ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=/var/log/$app/$app-sidekiq.log --line_match="Schedules Loaded"
ynh_systemd_action --service_name=${app}-streaming --action="start" --log_path=/var/log/$app/$app-streaming.log --line_match="Streaming API now listening"

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Upgrade of $app completed" --last