#!/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_print_info --message="Loading settings..."

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="$db_name"
db_pwd=$(ynh_app_setting_get --app="$app" --key=psqlpwd)

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

ynh_webpath_available -domain="$domain" --path_url="$path_url" \
	|| ynh_die --message="Path not available: ${domain}${path_url}"
test ! -d "$final_path" \
	|| ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================

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

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

backup_core_only=$(ynh_app_setting_get --app="$app" --key=backup_core_only)

# If backup_core_only have any value, then restore only code
if [ -z "$backup_core_only" ]
then
	ynh_restore_file --origin_path="$final_path/code"
else
	ynh_restore_file --origin_path="$final_path"
fi

# Remove the option backup_core_only if it's in the settings.yml file
ynh_app_setting_delete --app="$app" --key=backup_core_only

code_migration=$(ynh_app_setting_get --app="$app" --key=code_migration)

# make sure we revert the last code organization
if [ "$code_migration" -eq 1 ]
then
	mv "$final_path/code/"* "$final_path"
	mv "$final_path/media" "$final_path/code/data/media"
	mv "$final_path/import" "$final_path/code/data/music"
	ynh_secure_remove --file="$final_path/code"
	ynh_app_setting_delete --app="$app" --key=code_migration
fi

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_print_info --message="Recreating the dedicated system user..."

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

#=================================================
# RESTORE USER RIGHTS
#=================================================

# Restore permissions on app files
chown -R "$app": "$final_path"
chmod -R 755 "$final_path/code/front/dist/"

mkdir -p "/var/log/$app"
chown -R "$app": "/var/log/$app"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_print_info --message="Reinstalling dependencies..."

# Define and install dependencies
ynh_install_app_dependencies $pkg_dependencies

#=================================================
# RESTORE THE POSTGRESQL DATABASE
#=================================================
ynh_print_info --message="Restoring the PostgreSQL database..."

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user="$db_user" --db_name="$db_name" --db_pwd="$db_pwd"
ynh_psql_execute_file_as_root --file="./db.sql" --database="$db_name"

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_print_info --message="Restoring the systemd configuration..."

ynh_restore_file --origin_path="/etc/systemd/system/$app-beat.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app-server.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app-worker.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app.target"

systemctl enable "$app-beat.service"
systemctl enable "$app-server.service"
systemctl enable "$app-worker.service"

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

yunohost service add "$app-server" --log "/var/log/$app/server.log"
yunohost service add "$app-worker" --log "/var/log/$app/worker.log"
yunohost service add "$app-beat"   --log "/var/log/$app/beat.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_print_info --message="Starting a systemd service..."

ynh_systemd_action --action="start" --service_name="${app}-beat" --log_path="systemd" --line_match="celery beat process"
ynh_systemd_action --action="start" --service_name="${app}-server" --log_path="systemd" --line_match="Listening on TCP address"
ynh_systemd_action --action="start" --service_name="${app}-worker" --log_path="systemd" --line_match="celery worker"

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info --message="Reloading nginx web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_print_info --message="Restoration completed for $app"