#!/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
#=================================================

server_name=$YNH_APP_ARG_SERVER_NAME
description=$YNH_APP_ARG_DESCRIPTION
auth_server_address=$YNH_APP_ARG_AUTH_SERVER_ADDRESS
max_players=$YNH_APP_ARG_MAX_PLAYERS
max_view_distance=$YNH_APP_ARG_MAX_VIEW_DISTANCE
max_player_group_size=$YNH_APP_ARG_MAX_PLAYER_GROUP_SIZE
generate_custom_world=$YNH_APP_ARG_GENERATE_CUSTOM_WORLD
world_seed=$YNH_APP_ARG_WORLD_SEED
world_map_size_lg_x=$YNH_APP_ARG_WORLD_MAP_SIZE_LG_X
world_map_size_lg_y=$YNH_APP_ARG_WORLD_MAP_SIZE_LG_Y
continent_scale_hack=$YNH_APP_ARG_CONTINENT_SCALE_HACK
days_in_month=$YNH_APP_ARG_DAYS_IN_MONTH
months_in_year=$YNH_APP_ARG_MONTHS_IN_YEAR
months_in_tick=$YNH_APP_ARG_MONTHS_IN_TICK
years_in_history=$YNH_APP_ARG_YEARS_IN_HISTORY
generate_economy_csv=$YNH_APP_ARG_GENERATE_ECONOMY_CSV
allow_inter_site_trade=$YNH_APP_ARG_ALLOW_INTER_SITE_TRADE

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=1

ynh_app_setting_set --app=$app --key=server_name --value=$server_name
ynh_app_setting_set --app=$app --key=description --value=$description
ynh_app_setting_set --app=$app --key=auth_server_address --value=$auth_server_address
ynh_app_setting_set --app=$app --key=max_players --value=$max_players
ynh_app_setting_set --app=$app --key=max_view_distance --value=$max_view_distance
ynh_app_setting_set --app=$app --key=max_player_group_size --value=$max_player_group_size
ynh_app_setting_set --app=$app --key=generate_custom_world --value=$generate_custom_world
ynh_app_setting_set --app=$app --key=world_seed --value=$world_seed
ynh_app_setting_set --app=$app --key=world_map_size_lg_x --value=$world_map_size_lg_x
ynh_app_setting_set --app=$app --key=world_map_size_lg_y --value=$world_map_size_lg_y
ynh_app_setting_set --app=$app --key=continent_scale_hack --value=$continent_scale_hack
ynh_app_setting_set --app=$app --key=days_in_month --value=$days_in_month
ynh_app_setting_set --app=$app --key=months_in_year --value=$months_in_year
ynh_app_setting_set --app=$app --key=months_in_tick --value=$months_in_tick
ynh_app_setting_set --app=$app --key=years_in_history --value=$years_in_history
ynh_app_setting_set --app=$app --key=generate_economy_csv --value=$generate_economy_csv
ynh_app_setting_set --app=$app --key=allow_inter_site_trade --value=$allow_inter_site_trade

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN PORTS
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find an available port
port=$(ynh_find_port --port=14004)
ynh_print_info --message="Veloren server will run on port $port, which will be opened in the firewall"
ynh_app_setting_set --app=$app --key=port --value=$port

metrics_port=$(ynh_find_port --port=$(expr $port + 1))
ynh_print_info --message="Prometheus metrics will be available at 127.0.0.1:$metrics_port/metrics"
ynh_app_setting_set --app=$app --key=metrics_port --value=$metrics_port

# Expose port publicly

# Open the port
ynh_script_progression --message="Configuring firewall..." --weight=1
ynh_exec_warn_less yunohost firewall allow --no-upnp Both $port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=20

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=1

# Create a system user
ynh_system_user_create --username=$app --home_dir="$data_path"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=155

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

#=================================================
# SPECIFIC SETUP
#=================================================
# COMPILE SERVER
#=================================================
ynh_script_progression --message="Compiling server..." --weight=135

compile_server

#=================================================
# GENERATE CUSTOM WORLD
#=================================================

map_generated=0

if [ $generate_custom_world -eq 1 ]; then
	ynh_script_progression --message="Generating custom world..." --weight=730

	generate_custom_world
fi

#=================================================
# ADD CONFIGURATIONS
#=================================================

add_configuration_files

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config --others_var="data_path"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..."  --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description="Veloren game server" --needs_exposed_ports "$port" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=35

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --line_match="Server is ready to accept connections." --log_path="/var/log/$app/$app.log"

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

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