#!/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

mautrix_bridge_user=$app
domain=$(ynh_app_setting_get --app=$app --key=domain)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
mautrix_bridge_db_name=$(ynh_app_setting_get --app=$app --key=mautrix_bridge_db_name)
mautrix_bridge_db_user=$mautrix_bridge_db_name
mautrix_bridge_db_pwd=$(ynh_app_setting_get --app=$app --key=mautrix_bridge_db_pwd)
app_service_registration_path=$(ynh_app_setting_get --app=$app --key=app_service_registration_path)
synapse_instance=$(ynh_app_setting_get --app=$app --key=synapse_instance)

#=================================================
# 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
#=================================================
# 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

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=1

ynh_restore_file --origin_path="$final_path"

chown $mautrix_bridge_user:root -R $final_path

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=1

# Define and install dependencies
ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# RESTORE THE MYSQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the MySQL database..." --weight=1

ynh_psql_test_if_first_run
ynh_print_OFF
ynh_psql_create_user $mautrix_bridge_db_user $mautrix_bridge_db_pwd
ynh_print_ON
ynh_psql_execute_as_root --sql="CREATE DATABASE ""$mautrix_bridge_db_name"" ENCODING 'UTF8' LC_COLLATE='C' LC_CTYPE='C' template=template0 OWNER ""$mautrix_bridge_db_user"";"
ynh_psql_execute_file_as_root --file="db.sql" --database="$mautrix_bridge_db_name"

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

ynh_restore_file --origin_path="$app_service_registration_path"

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

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

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the logrotate configuration..."

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

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

yunohost service add $app --description "$app daemon for bridging Telegram and Matrix messages" --log /var/log/$app/$app.log

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

ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"

#=================================================
# GENERIC FINALIZATION
#=================================================
#
# also create an initial log file else the service fails
mkdir /var/log/$app
mkdir /var/log/$app/$app.log
chown $mautrix_bridge_user:root -R /var/log/$app

# after restoring files ensure synapse knows about the bot but don't die on failure
# TODO check (in manifest?) if the selected synapse instance is not already connected to a mautrix_bridge bridge
/opt/yunohost/matrix-$synapse_instance/update_synapse_for_appservice.sh \
    || echo "Synapse can't restart with the appservice configuration"

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

ynh_script_progression --message="Restoration completed for $app" --last