#!/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 # Need for the param line_match of ynh_systemd_action
}

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

server_domain=$YNH_APP_ARG_SERVER_DOMAIN
is_public=$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
path_url="/"

#=================================================
# 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 "This path already contains a folder"

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

ynh_app_setting_set --app=$app --key=server_domain --value=$server_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=$app --key=is_public --value=$is_public
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="Configuring firewall..."

# Find a free port
port=$(ynh_find_port 30000)
# Open this port
ynh_exec_warn_less yunohost firewall allow --no-upnp UDP $port
ynh_app_setting_set --app=$app --key=port --value=$port

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

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# 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"

#=================================================
# 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

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

#=================================================
# SPECIFIC SETUP
#=================================================
# Compile Minetest
pushd /opt/yunohost/$app

# Install the game
if [ $game = "capturetheflag" ]; then
git clone --recursive https://github.com/MT-CTF/capturetheflag.git games/capturetheflag
else
# Download Minetest Game
ynh_setup_source --dest_dir=/opt/yunohost/$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_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"

#=================================================
# CREATE WORLD
#=================================================

mkdir -p /var/log/$app

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

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

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$home_path/.minetest/minetest.conf"

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

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

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

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

#=================================================
# RELOAD MINETEST
#=================================================
ynh_print_info --message="Reloading minetest..."

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

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

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