#!/bin/bash

# kf2-srv is a command line tool for managing a set of Killing Floor 2 servers.
# Copyright (C) 2019, 2020 GenZmeY
# mailto: genzmey@gmail.com
# 
# This file is part of kf2-srv.
#
# kf2-srv is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
	
function show_enabled_instances ()
{
	local EnabledInstances=""
	for Instance in $(show_instances)
	do
		if systemctl -q is-enabled $(service_name "$Instance") ; then
			EnabledInstances+=" $Instance"
		fi
	done
	echo "$EnabledInstances"
}

function show_instances ()
{
	find "$InstanceConfigDir" \
	-maxdepth 1               \
	-mindepth 1               \
	-type d                   \
	-printf "%f\n"
}

function service_name () # $*: Instance[s]
{
	local Services=""
	for Instance in $*
	do
		Services+=" kf2-srv${KF2POSTFIX}@$Instance.service"
	done
	echo "$Services"
}

function instance_exists () # $1: Instance
{
	test -d "$InstanceConfigDir/$1"
	return $?
}

function instance_add () # $*: InstanceName[s]
{
	include /etc/steamcmd/steamcmd.conf
	include /etc/kf2-srv/kf2-srv.conf
	include "$LibDir/game.lib"	

	if [[ -z "$*" ]]; then
		echo "Name of instance[s] must be set"
		exit 1
	elif ! server_exists; then
		echo "You must install server first"
		echo "Run \"${ScriptName}${KF2POSTFIX} game update\" to install it"
		exit 1
	fi
	
	local MaxGamePort='7777'
	local MaxQueryPort='27015'
	local MaxWebAdminPort='8080'
	for Instance in $(show_instances)
	do
		local Config="$InstanceConfigDir/$Instance/instance.conf"
		local GamePort=$(multini --get "$Config" '' 'PortGame')
		local WebAdminPort=$(multini --get "$Config" '' 'PortWeb')
		local QueryPort=$(multini --get "$Config" '' 'PortQuery')
		if [[ "$GamePort" -gt "$MaxGamePort" ]]; then MaxGamePort="$GamePort"; fi
		if [[ "$QueryPort" -gt "$MaxQueryPort" ]]; then MaxQueryPort="$QueryPort"; fi
		if [[ "$WebAdminPort" -gt "$MaxWebAdminPort" ]]; then MaxWebAdminPort="$WebAdminPort"; fi
	done
	
	for Instance in $*
	do
		if instance_exists "$Instance"; then
			echo "Instance $Instance already exists - skip"
			continue
		fi

		local InstanceDir="$InstanceConfigDir/$Instance"
		
		local DirMode="-d -g $SteamUser -o $ForceIniGroup -m 775"
		local FileMode="  -g $SteamUser -o $ForceIniGroup -m $ForceIniPermissions"
		
		install $DirMode "$InstanceDir"
		install $DirMode "$InstanceDir/LinuxServer"

		install $FileMode "$InstanceConfigTemplate"                                     "$InstanceDir/instance.conf"
		install $FileMode "$DefaultConfigDir/KFAI.ini"                                  "$InstanceDir"
		install $FileMode "$DefaultConfigDir/KFWeb.ini"                                 "$InstanceDir"
		install $FileMode "$DefaultConfigDir/KFWebAdmin.ini"                            "$InstanceDir"
		install $FileMode "$DefaultConfigDir/KFMultiAdmin.ini"                          "$InstanceDir"
		install $FileMode "$DefaultConfigDir/LinuxServer-KFEngine.ini"                  "$InstanceDir"
		install $FileMode "$DefaultConfigDir/LinuxServer-KFGame.ini"                    "$InstanceDir"
		install $FileMode "$DefaultConfigDir/LinuxServer-KFInput.ini"                   "$InstanceDir"
		install $FileMode "$DefaultConfigDir/LinuxServer-KFSystemSettings.ini"          "$InstanceDir"
		install $FileMode "$DefaultConfigDir/LinuxServer/LinuxServerEngine.ini"         "$InstanceDir/LinuxServer"
		install $FileMode "$DefaultConfigDir/LinuxServer/LinuxServerGame.ini"           "$InstanceDir/LinuxServer"
		install $FileMode "$DefaultConfigDir/LinuxServer/LinuxServerInput.ini"          "$InstanceDir/LinuxServer"
		install $FileMode "$DefaultConfigDir/LinuxServer/LinuxServerSystemSettings.ini" "$InstanceDir/LinuxServer"
		
		((MaxGamePort++)); ((MaxQueryPort++)); ((MaxWebAdminPort++))
		
		multini -s "$InstanceDir/instance.conf" '' 'PortGame'  "$MaxGamePort"
		multini -s "$InstanceDir/instance.conf" '' 'PortQuery' "$MaxQueryPort"
		multini -s "$InstanceDir/instance.conf" '' 'PortWeb'   "$MaxWebAdminPort"
		
		multini -s "$InstanceDir/KFWeb.ini"                "IpDrv.WebServer"   "bEnabled"            "true"
		multini -s "$InstanceDir/LinuxServer-KFEngine.ini" "LogFiles"          "PurgeLogsDays"       "0"
		multini -s "$InstanceDir/LinuxServer-KFEngine.ini" "LogFiles"          "LogTimes"            "False"
		multini -s "$InstanceDir/KFWebAdmin.ini"           "WebAdmin.WebAdmin" "AuthenticationClass" "WebAdmin.MultiWebAdminAuth"
		multini -s "$InstanceDir/KFWebAdmin.ini"           "WebAdmin.WebAdmin" "bHttpAuth"           "True"
		multini -s "$InstanceDir/KFWebAdmin.ini"           "WebAdmin.Chatlog"  "Filename"            "$Instance-chat"
		multini -s "$InstanceDir/KFWebAdmin.ini"           "WebAdmin.Chatlog"  "bIncludeTimeStamp"   "False"

		echo "Instance $Instance created. See /etc/$ScriptName/instances$BetaPostfix/$Instance for edit configuration"
	done
}

function instance_chat () # $1: Message, $*: instance...
{
	include "$LibDir/webadmin.lib"	
	
	local Message=$(echo "$1" | sed 's/ /+/g')
	shift
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_instances)
	fi
	
	for Instance in $InstanceList
	do
	(
		if instance_exists "$Instance"; then	
			local Service=$(service_name "$Instance")
			if systemctl -q is-active $Service ; then
				admin_curl "$Instance" "ServerAdmin/current/chat+frame+data" \
				--request POST            \
				--data ajax=1             \
				--data message="$Message" \
				--data teamsay=-1
			else
				echo "Instance $Instance not running - skip"
			fi
		else
			echo "Instance $Instance not exitst"
		fi
	) &
	done
	wait
}

function instance_delete () # $*: [InstanceName[s]]
{
	if [[ -z "$*" ]]; then
		echo "Are you sure you want to delete all instances? [y/N]"
		local Answ="N"
		read Answ
		if [[ "$Answ" == "y" || "$Answ" == "Y" ]]; then
			for Instance in $(show_instances)
			do
			(
				instance_stop "$Instance"
				instance_delete "$Instance"
			) &
			done
		fi
	else
		for Instance in $*
		do
		(
			if instance_exists "$Instance"; then
				local InstanceDir="$InstanceConfigDir/$Instance"
				instance_stop "$Instance"
				rm -rf "$InstanceDir"
				echo "Instance $Instance removed"
			else
				echo "Instance $Instance not exists"
			fi
		) &
		done
	fi
	wait
}

function instance_disable () # $*: [InstanceName[s]]
{
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_instances)
	fi
	
	local ToDisableInstanceList=""
	for Instance in $InstanceList
	do
		if instance_exists "$Instance"; then
			ToDisableInstanceList+=" $Instance"
		else
			echo "Instance $Instance not exitst"
		fi
	done
	
	if [[ -n "$ToDisableInstanceList" ]]; then
		systemctl disable $(service_name "$ToDisableInstanceList")
	else
		echo "Nothing to do"
	fi
}

function instance_enable () # $1*: [InstanceName[s]]
{
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_instances)
	fi
	
	local ToEnableInstanceList=""
	for Instance in $InstanceList
	do
		if instance_exists "$Instance"; then
			ToEnableInstanceList+=" $Instance"
		else
			echo "Instance $Instance not exist"
		fi
	done
	
	if [[ -n "$ToEnableInstanceList" ]]; then
		systemctl enable $(service_name "$ToEnableInstanceList")
	else
		echo "Nothing to do"
	fi
}

function instance_list () # $*: [InstanceName[s]]
{
	{
		echo -e "INSTANCE:AUTORUN:STATE:P_GAME:P_QUERY:P_WEB:TYPE:LEN:DIFF:MUTATORS:ARGS:COMMENT"
		{
			local InstanceList="$*"
			if [[ -z "$*" ]] ; then
				InstanceList=$(show_instances)
			fi
			for Instance in $InstanceList
			do
				instance_status "$Instance"
			done
		} | sort -t : -k 4
	} | column -t -s :
}

function instance_status () # $1: InstanceName
{
	include /etc/kf2-srv/kf2-srv.conf
	
	local Instance="$1"
	if ! instance_exists "$Instance"; then return 1; fi
	if systemctl -q is-enabled $(service_name "$Instance"); then
		local IsEnabled="enabled"
	else
		local IsEnabled="disabled"
	fi
	if systemctl | grep $(service_name "$Instance") | grep -q 'running' ; then
		local IsRuning="running"
	else
		local IsRuning="stopped"
	fi
	local Comment=$(        multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Comment")
	local GamePort=$(       multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "PortGame")
	local WebAdminPort=$(   multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "PortWeb")
	local QueryPort=$(      multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "PortQuery")
	local GameType=$(       multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Game")
	local GameLength=$(     multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Length")
	local GameDifficulty=$( multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Difficulty")
	local Map=$(            multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Map")
	local Mutators=$(       multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Mutators")
	local Args=$(           multini -g "$InstanceConfigDir/$Instance/instance.conf" '' "Args")
	
	local DisplayGameType=''
	local DisplayGameLength=''
	local DisplayDifficulty=''
	local DisplayMutators=''
	
	for Mutator in ${Mutators//,/ }
	do
		local MutName=${MutNames[$Mutator]}
		if [[ -z "$MutName" ]]; then
			MutName="$Mutator"
		fi
		if [[ -z "$DisplayMutators" ]]; then
			DisplayMutators="$MutName"
		else
			DisplayMutators="$DisplayMutators, $MutName"
		fi
	done
	
	if [[ -n "$GameType"       ]]; then DisplayGameType=${ModeNames[$GameType]}         ; fi
	if [[ -n "$GameLength"     ]]; then DisplayGameLength=${WaveNames[$GameLength]}     ; fi
	if [[ -n "$GameDifficulty" ]]; then DisplayDifficulty=${DiffNames[$GameDifficulty]} ; fi
	
	if [[ -z "$DisplayMutators" ]] && [[ -z "$Mutators" ]]; then
		DisplayMutators='-'
	fi
	
	if [[ -z "$DisplayGameType" ]]; then
		DisplayGameType="$GameType"
	fi
	
	if [[ -z "$Args" ]]; then
		Args='-'
	fi
	
	if [[ "$GameType" == 'KFGameContent.KFGameInfo_WeeklySurvival'  || \
		  "$GameType" == 'KFGameContent.KFGameInfo_Endless' || \
		  "$GameType" == 'KFGameContent.KFGameInfo_VersusSurvival'  || \
		  "$GameType" == 'KFGameContent.KFGameInfo_Objective' ]]; then
		DisplayGameLength='-'
	fi
	
	if [[ "$GameType" == 'KFGameContent.KFGameInfo_WeeklySurvival' || \
		  "$DisplayGameType" == 'KFGameContent.KFGameInfo_VersusSurvival' ]]; then
		DisplayDifficulty='-'
	fi
	
	echo -e "$Instance:$IsEnabled:$IsRuning:$GamePort:$QueryPort:$WebAdminPort:$DisplayGameType:$DisplayGameLength:$DisplayDifficulty:$DisplayMutators:$Args:$Comment"
}

function instance_restart () # $*: [InstanceName[s]]
{
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_enabled_instances)
	fi
	
	local ToRestartInstancesList=""
	for Instance in $InstanceList
	do
		if instance_exists "$Instance"; then
			ToRestartInstancesList+=" $Instance"
		else
			echo "Instance $Instance not exitst"
		fi
	done
	
	if [[ -n "$ToRestartInstancesList" ]]; then
		systemctl restart $(service_name "$ToRestartInstancesList")
	else
		echo "Nothing to do"
	fi
}

function instance_start () # $*: [InstanceName[s]]
{
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_enabled_instances)
	fi
	
	local InactiveServiceList=""
	for Instance in $InstanceList
	do
		if instance_exists "$Instance"; then
			local Service=$(service_name "$Instance")
			if systemctl -q is-active $Service ; then
				echo "Instance $Instance already running - skip"
			else
				InactiveServiceList+=" $Service"
			fi
		else
			echo "Instance $Instance not exitst"
		fi
	done
	
	if [[ -n "$InactiveServiceList" ]]; then
		systemctl start $InactiveServiceList
	else
		echo "Nothing to do"
	fi
}

function instance_stop () # $*: [InstanceName[s]]
{
	local InstanceList="$*"
	if [[ -z "$InstanceList" ]] ; then
		InstanceList=$(show_instances)
	fi
	
	local ToStopInstanceList=""
	for Instance in $InstanceList
	do
		if instance_exists "$Instance"; then
			ToStopInstanceList+=" $Instance"
		else
			echo "Instance $Instance not exitst"
		fi
	done
	
	if [[ -n "$ToStopInstanceList" ]]; then
		systemctl stop $(service_name "$ToStopInstanceList")
	else
		echo "Nothing to do"
	fi
}