#!/bin/bash

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

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

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
is_public=$YNH_APP_ARG_IS_PUBLIC
game=$YNH_APP_ARG_GAME
pvp=$YNH_APP_ARG_PVP
creative=$YNH_APP_ARG_CREATIVE
damage=$YNH_APP_ARG_DAMAGE
servername=$YNH_APP_ARG_SERVERNAME

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..."

final_path=/opt/yunohost/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=game --value=$game
ynh_app_setting_set --app=$app --key=pvp --value=$pvp
ynh_app_setting_set --app=$app --key=creative --value=$creative
ynh_app_setting_set --app=$app --key=damage --value=$damage
ynh_app_setting_set --app=$app --key=servername --value=$servername

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..."

# Find an available port
port=$(ynh_find_port 30000)
ynh_app_setting_set --app=$app --key=port --value=$port
# Open the port
ynh_script_progression --message="Configuring firewall..."
ynh_exec_warn_less yunohost firewall allow --no-upnp UDP $port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..."

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..."

home_path=/home/yunohost.app/$app
ynh_app_setting_set --app=$app --key=home_path --value=$home_path

# Create a system user
ynh_system_user_create --username=$app --home_dir=$home_path --use_shell

mkdir -p "$home_path"
chmod 750 "$home_path"
chmod -R o-rwx "$home_path"
chown -R $app:$app "$home_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..."

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

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:$app "$final_path"

#=================================================
# SPECIFIC SETUP
#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..."

mkdir -p $home_path/.minetest/worlds/
cp -a ../conf/minetest.conf $home_path/.minetest/

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# BUILDING
#=================================================
ynh_script_progression --message="Building Minetest..."


# Install the game
if [ $game = "capturetheflag" ]; then
	pushd $final_path
		git clone --recursive https://github.com/MT-CTF/capturetheflag.git games/capturetheflag
	popd
else
	# Download Minetest Game
	ynh_setup_source --dest_dir=$final_path/games/minetest_game --source_id=minetest_game
fi

pushd $final_path
	cmake . -DRUN_IN_PLACE=TRUE -DENABLE_LUAJIT=TRUE -DBUILD_CLIENT=FALSE -DBUILD_SERVER=TRUE

	make -j$(nproc)
popd

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Adding a configuration file..."

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

if [ $is_public -eq 1 ]; then
	announce="true"
else
	announce="false"
fi

ynh_add_config --template="../conf/minetest.conf" --destination="$home_path/.minetest/minetest.conf"

#=================================================
# CREATE LOG DIRECTORY
#=================================================
ynh_script_progression --message="Creating log directory..."

mkdir -p /var/log/$app

# Set permissions on logs
chown -R $app:$app /var/log/$app

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..."

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add $app --description="Voxel game engine and game" --log="/var/log/$app/$app.log" --needs_exposed_ports="$port"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/minetest.log" --line_match="listening on"

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

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