#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

server_domain=$(ynh_app_setting_get --app=$app --key=server_domain)
port=$(ynh_app_setting_get --app=$app --key=port)
game=$(ynh_app_setting_get --app=$app --key=game)
is_public=$(ynh_app_setting_get --app=$app --key=is_public)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
home_path=$(ynh_app_setting_get --app=$app --key=home_path)
pvp=$(ynh_app_setting_get --app=$app --key=pvp)
creative=$(ynh_app_setting_get --app=$app --key=creative)
damage=$(ynh_app_setting_get --app=$app --key=damage)
servername=$(ynh_app_setting_get --app=$app --key=servername)


#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_print_info --message="Checking version..."
version=ynh_app_upstream_version

if [ "$version" = "0.01" ]; then
ynh_die --message="You can't upgrade to this version with simple upgrade. Please read the readme for upgrading https://github.com/YunoHost-Apps/minetest_ynh#additional-information ..."
fi


ynh_print_info --message="Ensuring downward compatibility..."

# Fix is_public as a boolean value
if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set --app=$app --key=is_public --value=1
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set --app=$app --key=is_public --value=0
	is_public=0
fi

# If final_path doesn't exist, create it
if [ -z $final_path ]; then
	final_path=/opt/yunohost/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_print_info --message="Backing up the app before upgrading (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting # Need for the param line_match of ynh_systemd_action

	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info --message="Upgrading source files..."

# Remove old install
ynh_secure_remove --file="$final_path"

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_print_info --message="Upgrading dependencies..."

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info --message="Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir=$home_path --use_shell

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info --message="Upgrading systemd configuration..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# COPY CONFIG FILE
#=================================================

if [ -e $home_path ]
then
echo "Nothing to do..."
else
mkdir -p $home_path/.minetest/
mkdir $home_path/.minetest/worlds/
fi

#=================================================
# SPECIFIC UPGRADE
#=================================================
# Compile Minetest
pushd /opt/yunohost/$app
# Install the game
if [ $game = "capturetheflag" ]; then
# Download Capture The Flag
git clone --recursive https://github.com/MT-CTF/capturetheflag.git games/capturetheflag
else
# Download Minetest Game
ynh_setup_source --dest_dir=/opt/yunohost/$app/games/minetest_game --source_id=minetest_game
fi

cmake . -DRUN_IN_PLACE=TRUE -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE

make -j$(nproc)

popd

#=================================================
# MODIFY A CONFIG FILE
#=================================================

ynh_backup_if_checksum_is_different --file="$home_path/.minetest/minetest.conf"

cp ../conf/minetest.conf $home_path/.minetest/minetest.conf

### `ynh_replace_string` is used to replace a string in a file.
### (It's compatible with sed regular expressions syntax)

ynh_replace_string --match_string="__GAME__" --replace_string="$game" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__SERVERNAME__" --replace_string="$servername" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$server_domain" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__ANNOUNCE__" --replace_string="$is_public" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__PVP__" --replace_string="$pvp" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__CREATIVE__" --replace_string="$creative" --target_file="$home_path/.minetest/minetest.conf"
ynh_replace_string --match_string="__DAMAGE__" --replace_string="$damage" --target_file="$home_path/.minetest/minetest.conf"

ynh_store_file_checksum --file="$home_path/.minetest/minetest.conf"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_print_info --message="Upgrading logrotate configuration..."

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chown -R root: $final_path
chown -R $app: $home_path

#=================================================
# RELOAD MINETEST
#=================================================
ynh_print_info --message="Restarting Minetest..."

ynh_systemd_action --service_name=$app --action="restart" --log_path="/var/log/$app/minetest.log" --line_match="listening on"

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

ynh_print_info --message="Upgrade of $app completed"