#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
port=$(ynh_app_setting_get --app=$app --key=port)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
port_videobridge=$(ynh_app_setting_get --app=$app --key=port_videobridge)
port_component=$(ynh_app_setting_get --app=$app --key=port_component)
focus_user=$(ynh_app_setting_get --app=$app --key=focus_user)
videobridge_user=$(ynh_app_setting_get --app=$app --key=videobridge_user)

#=================================================
# STANDARD REMOVE
#=================================================
# REMOVE SERVICE INTEGRATION IN YUNOHOST
#=================================================

# Remove the service from the list of services known by YunoHost (added from `yunohost service add`)
if ynh_exec_warn_less yunohost service status $app-videobridge >/dev/null
then
	ynh_script_progression --message="Removing $app-videobridge service..."
	yunohost service remove $app-videobridge
fi

if ynh_exec_warn_less yunohost service status $app-jicofo >/dev/null
then
	ynh_script_progression --message="Removing $app-jicofo service..."
	yunohost service remove $app-jicofo
fi

#=================================================
# STOP AND REMOVE SERVICE
#=================================================
ynh_script_progression --message="Stopping and removing the systemd service..."

# Remove the dedicated systemd config
ynh_remove_systemd_config --service=$app-videobridge
ynh_remove_systemd_config --service=$app-jicofo

#=================================================
# RECONFIGURE PROSODY
#=================================================
ynh_script_progression --message="Reconfiguring Prosody..."

prosodyctl deluser $focus_user@auth.$domain || true
prosodyctl deluser $videobridge_user@auth.$domain || true

# Remove domain conf template
ynh_secure_remove --file="/etc/prosody/conf.d/$domain.cfg.lua"
ynh_secure_remove --file="/etc/prosody/conf.avail/$domain.cfg.lua"
ynh_secure_remove --file="/etc/prosody/certs/$domain.key"
ynh_secure_remove --file="/etc/prosody/certs/$domain.crt"
ynh_secure_remove --file="/var/lib/prosody/$domain.key"
ynh_secure_remove --file="/var/lib/prosody/$domain.crt"
ynh_secure_remove --file="/var/lib/prosody/$domain.cnf"
ynh_secure_remove --file="/etc/prosody/certs/auth.$domain.key"
ynh_secure_remove --file="/etc/prosody/certs/auth.$domain.crt"
ynh_secure_remove --file="/var/lib/prosody/auth.$domain.key"
ynh_secure_remove --file="/var/lib/prosody/auth.$domain.crt"
ynh_secure_remove --file="/var/lib/prosody/auth.$domain.cnf"
ynh_secure_remove --file="/usr/local/share/ca-certificates/auth.$domain.crt"

update-ca-certificates -f

ynh_systemd_action --service_name=prosody --action=restart

#=================================================
# REMOVE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Removing logrotate configuration..."

# Remove the app-specific logrotate config
ynh_remove_logrotate

#=================================================
# REMOVE APP MAIN DIR
#=================================================
ynh_script_progression --message="Removing app main directory..."

# Remove the app directory securely
ynh_secure_remove --file="$final_path"

#=================================================
# REMOVE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Removing NGINX web server configuration..."

# Remove the dedicated NGINX config
ynh_remove_nginx_config

#=================================================
# REMOVE DEPENDENCIES
#=================================================
ynh_script_progression --message="Removing dependencies..."

# Remove metapackage and its dependencies
ynh_remove_app_dependencies

# Remove Prosody
ynh_app_setting_delete --app=$app --key=require_prosody
gpasswd --delete prosody $app

# List apps requiring Prosody
installed_apps=$(yunohost app list | grep -oP 'id: \K.*$')
required_by=""
installed_app_required_by=""
for installed_app in $installed_apps
do
    installed_app_required_by=$(ynh_app_setting_get --app=$installed_app --key="require_prosody")
    if [[ $installed_app_required_by ]]
    then
        required_by="${installed_app_required_by}"
    fi
    installed_app_required_by=""
done

# If Prosody is no more required
if [[ ! $required_by ]]
then
    # Remove Prosody
    ynh_print_info --message="Removing of Prosody"
    yunohost app remove prosody --purge
fi

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

if yunohost firewall list | grep -q "\- $port$"
then
	ynh_script_progression --message="Closing port $port..."
	ynh_exec_warn_less yunohost firewall disallow TCP $port
fi

if yunohost firewall list | grep -q "\- $port_videobridge$"
then
	ynh_script_progression --message="Closing port $port_videobridge..."
	ynh_exec_warn_less yunohost firewall disallow UDP $port_videobridge
fi

#=================================================
# SPECIFIC REMOVE
#=================================================
# REMOVE VARIOUS FILES
#=================================================
ynh_script_progression --message="Removing various files..."

# Remove a directory securely
ynh_secure_remove --file="/etc/$app"

# Remove the log files
ynh_secure_remove --file="/var/log/$app"

#=================================================
# GENERIC FINALIZATION
#=================================================
# REMOVE DEDICATED USER
#=================================================
ynh_script_progression --message="Removing the dedicated system user..."

gpasswd --delete www-data $app
# Delete a system user
ynh_system_user_delete --username=$app

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

ynh_script_progression --message="Removal of $app completed"