#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
port=$(ynh_app_setting_get $app port)
peer_port=$(ynh_app_setting_get $app peer_port)

#=================================================
# FIX OLD THINGS
#=================================================

if [ -z $port ]; then
	port=9091
	ynh_app_setting_set $app port $port
fi
if [ -z $peer_port ]; then
	peer_port=51413
	ynh_app_setting_set $app peer_port $peer_port
fi

# Add peer_port also on UDP.
yunohost firewall allow UDP $peer_port >/dev/null 2>&1

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================

# Inform the backup/restore process that it should not save the data directory
ynh_app_setting_set $app backup_core_only 1
ynh_backup_before_upgrade	# Backup the current version of the app
ynh_clean_setup () {
	ynh_restore_upgradebackup	# restore it if the upgrade fails
}
ynh_abort_if_errors	# Exit if an error occurs during the execution of the script

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# NGINX CONFIGURATION
#=================================================

# Add a "/" at the end of path_url for next commands
# To avoid a double / in the nginx config file.
[ "$path_url" = "/" ] || path_url=${path_url}/
ynh_add_nginx_config

#=================================================
# INSTALL DEPENDENCIES
#=================================================

ynh_install_app_dependencies transmission-daemon acl

#=================================================
# SPECIFIC UPGRADE
#=================================================
# CREATE DIRECTORIES
#=================================================

mkdir -p /home/yunohost.transmission/{progress,completed,watched}

#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

chown -R debian-transmission:www-data /home/yunohost.transmission/
chown -R debian-transmission: /home/yunohost.transmission/{progress,watched}
chmod -R 764 /home/yunohost.transmission
chmod -R 777 /home/yunohost.transmission/watched

#=================================================
# CONFIGURE TRANSMISSION
#=================================================

# Transmission has to be stopped before modifying its config
systemctl stop transmission-daemon

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different /etc/transmission-daemon/settings.json

# Create a RPC password
rpcpassword=$(ynh_string_random)
ynh_app_setting_set $app rpcpassword "$rpcpassword"

ynh_replace_string "__RPC_PASSWORD_TO_CHANGE__" "$rpcpassword" ../conf/settings.json
ynh_replace_string "__PATH__" "$path_url" ../conf/settings.json
ynh_replace_string "__PEER_PORT__" "$peer_port" ../conf/settings.json
ynh_replace_string "__PORT__" "$port" ../conf/settings.json
cp ../conf/settings.json /etc/transmission-daemon/settings.json

#=================================================
# STORE THE CHECKSUM OF THE CONFIG FILE
#=================================================

# Recalculate and store the config file checksum into the app settings
ynh_store_file_checksum /etc/transmission-daemon/settings.json

#=================================================
# YUNOHOST MULTIMEDIA INTEGRATION
#=================================================

ynh_multimedia_build_main_dir
# Set rights on transmission directory (parent need to be readable by other, and progress need to be writable by multimedia. Because files will move)
ynh_multimedia_addfolder "/home/yunohost.transmission" "share/Torrents"
# And share completed directory
ynh_multimedia_addfolder "/home/yunohost.transmission/completed" "share/Torrents"
# Share also watched directory, to allow to use it easily
ynh_multimedia_addfolder "/home/yunohost.transmission/watched" "share/Torrent to download"

#=================================================
# PATCH SOURCE TO ADD A DOWNLOAD BUTTON
#=================================================

cp ../sources/extra_files/app/toolbar-downloads.png /usr/share/transmission/web/style/transmission/images/toolbar-downloads.png
if ! grep --quiet "Inserted by Yunohost install script" /usr/share/transmission/web/style/transmission/common.css
then
    cat ../sources/extra_files/app/ynh_common.css >> /usr/share/transmission/web/style/transmission/common.css
fi
ynh_replace_string "<div id=\"toolbar-inspector\" title=\"Toggle Inspector\"></div>$" "<div id=\"toolbar-inspector\" title=\"Toggle Inspector\"></div><div id=\"toolbar-separator\"></div><a href=\"../../downloads/\" id=\"toolbar-downloads\" title=\"Downloads\" target=\"_blank\"></a>" /usr/share/transmission/web/index.html

#=================================================
# START TRANSMISSION
#=================================================

systemctl start transmission-daemon

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx

#=================================================
# REMOVE BACKUP_CORE_ONLY
#=================================================

ynh_app_setting_delete $app backup_core_only