#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu

# Source YNH helpers
. /usr/share/yunohost/helpers

# Get app instance name
app=$YNH_APP_INSTANCE_NAME

# Retrieve arguments
domain=$(sudo yunohost app setting $app domain)
path=$(sudo yunohost app setting $app path)

# Check domain/path availability
sudo yunohost app checkurl $domain$path -a $app
if [[ ! $? -eq 0 ]]; then
    echo "There is already an app on this URL : $domain$path" | sudo tee /dev/stderr
    exit 1
fi

sources_path=/usr/share/transmission
# Do not check for empty source_path because 'apt-get remove' does not clean everything
# if [ -d $sources_path ]; then
#     echo "There is already a directory: $sources_path " | sudo tee /dev/stderr
#     exit 1
# fi

data_path=/home/yunohost.transmission
if [ -d $data_path ]; then
    echo "There is already a directory: $data_path " | sudo tee /dev/stderr
    exit 1
fi

nginx_conf=/etc/nginx/conf.d/$domain.d/$app.conf
if [ -f $nginx_conf ]; then
    echo "There is already a nginx conf file at this path: $nginx_conf " | sudo tee /dev/stderr
    exit 1
fi

app_conf=/etc/transmission-daemon/settings.json
# Do not check for empty app_conf because 'apt-get remove' does not clean everything
# if [ -f $app_conf ]; then
#     echo "There is already a PHP-FPM conf file at this path: $app_conf " | sudo tee /dev/stderr
#     exit 1
# fi

# Open port in firewall
sudo yunohost firewall allow TCP 51413 > /dev/null 2>&1

# Install official debian package
sudo apt-get install transmission-daemon -y -qq

# Make directories and set rights
sudo mkdir -p /home/yunohost.transmission/{progress,completed}
sudo chown -R debian-transmission:www-data /home/yunohost.transmission/
sudo chown -R debian-transmission:debian-transmission /home/yunohost.transmission/progress
sudo find /home/yunohost.transmission/ -type f | while read LINE; do sudo chmod 640 "$LINE" ; done
sudo find /home/yunohost.transmission/ -type d | while read LINE; do sudo chmod 750 "$LINE" ; done

# Reload transmission service
sudo service transmission-daemon reload

# Monitor service
sudo yunohost service add transmission-daemon

# Restore sources & data
sudo cp -a "./sources" $sources_path
sudo cp -a "./data" $data_path

# Restore conf files
sudo cp -a "./conf/nginx.conf" $nginx_conf
sudo cp -a "./conf/transmission.json" $app_conf

# Reload Nginx
sudo service nginx reload