#!/bin/bash

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

# Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
source ../settings/scripts/_common.sh
source /usr/share/yunohost/helpers

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$(ynh_app_setting_get --app=$app --key=db_user)
db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..." --weight=1

test ! -d $final_path \
	|| ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the NGINX web server configuration..." --weight=1

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..." --weight=1

# Create the dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir=$final_path

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=10

ynh_restore_file --origin_path="$final_path"

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

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=10

# Define and install dependencies
ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$NODEJS_VERSION
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
ynh_install_ruby --ruby_version=$RUBY_VERSION

#=================================================
# RESTORE THE POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=10

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
ynh_psql_execute_as_root --sql="ALTER USER $db_user CREATEDB;"
ynh_psql_execute_file_as_root --file="./db.sql" --database="$db_name"

#=================================================
# 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 $swap_needed Mo to swap..." --weight=1
ynh_add_swap --size=$swap_needed

#=================================================
# INSTALLING RUBY AND BUNDLER
#=================================================
ynh_script_progression --message="Installing Ruby dependencies..." --weight=10

pushd "$final_path/live"
	ynh_use_ruby
	ynh_gem update --system --no-document
	ynh_gem install bundler --no-document
popd

#=================================================
# RESTORE VARIOUS FILES
#=================================================
ynh_script_progression --message="Restoring various files..." --weight=1

ynh_restore_file --origin_path="/etc/cron.d/$app"

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..." --weight=1

ynh_restore_file --origin_path="/etc/systemd/system/$app-web.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app-sidekiq.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app-streaming.service"
systemctl enable "$app-web" "$app-sidekiq" "$app-streaming" --quiet

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add "$app-web" --description="$app web service"
yunohost service add "$app-sidekiq" --description="$app sidekiq service"
yunohost service add "$app-streaming" --description="$app streaming service"

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

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

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Restoration completed for $app" --weight=1