#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
port=$(ynh_app_setting_get $app port)
db_name=$(ynh_app_setting_get $app db_name)
db_user=$db_name
final_path=$(ynh_app_setting_get $app final_path)
redis_db=$(ynh_app_setting_get $app redis_db)

#=================================================
# STANDARD REMOVE
#=================================================
# REMOVE SERVICE FROM ADMIN PANEL
#=================================================

# Remove a service from the admin panel, added by `yunohost service add`
if yunohost service status "$app-server" >/dev/null 2>&1
then
	echo "Remove $app-server service"
	yunohost service remove "$app-server"
fi

if yunohost service status "$app-worker" >/dev/null 2>&1
then
	echo "Remove $app-worker service"
	yunohost service remove "$app-worker"
fi

if yunohost service status "$app-beat" >/dev/null 2>&1
then
	echo "Remove $app-beat service"
	yunohost service remove "$app-beat"
fi

#=================================================
# STOP AND REMOVE SERVICE
#=================================================
ynh_print_info "Stopping and removing the systemd service"

ynh_systemd_action --action=stop --service_name=${app}-beat --log_path=systemd --line_match="Stopped Funkwhale"
ynh_systemd_action --action=stop --service_name=${app}-server --log_path=systemd --line_match="Stopped Funkwhale"
ynh_systemd_action --action=stop --service_name=${app}-worker --log_path=systemd --line_match="Stopped Funkwhale"

# Remove the dedicated systemd config
ynh_remove_systemd_config "$app-server"
ynh_remove_systemd_config "$app-worker"
ynh_remove_systemd_config "$app-beat"

ynh_secure_remove "/etc/systemd/system/$app.target"

#=================================================
# REMOVE THE POSTGRESQL DATABASE
#=================================================
ynh_print_info "Removing the PostgreSQL database"

ynh_psql_execute_as_root "\connect $db_name 
SELECT pg_terminate_backend (pg_stat_activity.pid) FROM pg_stat_activity WHERE pg_stat_activity.datname = '$db_name';"

# Remove a database if it exists, along with the associated user
ynh_psql_remove_db --db_name="$db_name" --db_user="$app"

#=================================================
# REMOVE THE REDIS DATABASE
#=================================================
ynh_print_info "Removing the Redis database"

# Remove a database if it exists, along with the associated user
ynh_redis_remove_db "$redis_db"

#=================================================
# REMOVE DEPENDENCIES
#=================================================
ynh_print_info "Removing dependencies"

# Remove metapackage and its dependencies
ynh_remove_app_dependencies

#=================================================
# REMOVE APP MAIN DIR
#=================================================
ynh_print_info "Removing app main directory"

# Remove the app directory securely
ynh_secure_remove "$final_path"

ynh_secure_remove "/var/log/$app"

#=================================================
# REMOVE NGINX CONFIGURATION
#=================================================
ynh_print_info "Removing nginx web server configuration"

# remove domain specific configuration
funkwhale_nginx_domain_cleaning

# Remove the dedicated nginx config
ynh_remove_nginx_config

#=================================================
# CLOSE A PORT
#=================================================

if yunohost firewall list | grep -q "\- $port$"
then
	ynh_print_info "Closing port $port"
	ynh_exec_warn_less yunohost firewall disallow TCP $port
fi

#=================================================
# GENERIC FINALIZATION
#=================================================
# REMOVE FAIL2BAN CONFIGURATION
#=================================================

ynh_remove_fail2ban_config

#=================================================
# REMOVE DEDICATED USER
#=================================================
ynh_print_info "Removing the dedicated system user"

# Delete a system user
ynh_system_user_delete "$app"

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

ynh_print_info "Removal of $app completed"