######################
### Jessist Script ###
######################
# This script is part of Jessist
# Jessist is licensed under GNU GPLv3
#
# This script manages basically all important and shared functions and variables
# used throughout Jessist.
# It currently contains:
# - a logger, 
# - scene switcher with fade transition,
# - music player,
# - crash function,
# - dialog manager
# NOTE: This code is pretty much imported from documentation with a few modifications              « Bullshit
#       Link: https://docs.godotengine.org/en/stable/tutorials/scripting/singletons_autoload.html  « Bullshit
extends Node

var currentDialog = null
var dialogBalloon = ResourceLoader.load("res://Dialog/dialog/dialog.tscn").instance()
var currentScene = null
var loadingScene = ResourceLoader.load("res://Scenes/LoadingScene.tscn").instance()
var transitionScene = ResourceLoader.load("res://Scenes/Transition.tscn").instance()
var countersScene = ResourceLoader.load("res://Scenes/Modules/Counters.tscn").instance()
var crashScene = ResourceLoader.load("res://Scenes/CrashHandler.tscn").instance()
var debugConsoleScene = ResourceLoader.load("res://Scenes/Modules/DebugConsole.tscn").instance()
var transitionState = 0
var music = AudioStreamPlayer.new()
var sound = AudioStreamPlayer.new()
export (bool) var debuggingMode = OS.is_debug_build()
export (bool) var enableVerbosity = true
export (bool) var enableVelocityMessages = true
export (bool) var enableFunctionCalls = true
export (bool) var enableCounters = false
export (bool) var logger = true
export (bool) var loggerInfo = true
export (bool) var loggerWarn = true
export (bool) var loggerError = true
export (bool) var gamePaused = false
export (float, -60, -5) var musicVolumeDefault = -5
export (float, -60, -5) var musicVolumePaused = -15
export (float, -60, -5) var musicVolumeLoad = -40
export (float) var musicVolume = 0
export (String, "Rocket") var musicPlaying = "Rocket"
export (AudioStreamOGGVorbis) var musicStream = null
export (String) var soundPlaying = null
export (AudioStreamOGGVorbis) var soundStream = null
export (bool) var soundAllow = true
export (bool) var musicAllow = true
export (bool) var allowCheats = true
export (bool) var crashed = false
var thread = null
var threadMusic = null
var threadMusicPlay = null
var threadSound = null
var threadSoundPlay = null
var transitionThread = null
var logSchema = "[%logtype%] [%script% | %function%] %message%"
var sessionLog = Array()
enum logTypes {CALL,ERRO,WARN,INFO,VERB,VEPO}

func _ready():
	if debuggingMode:
		logInfo("GameController","_ready","Developer Mode is activated. If this should be a production build, DISABLE debuggingMode IN GameController.gd NOW.")
	else:
		pass
		#enableVerbosity = false
		#enableVelocityMessages = false
		#enableFunctionCalls = false
		#enableCounters = false
	if not enableVerbosity:
		enableVelocityMessages = false
		enableFunctionCalls = false
	if not logger:
		loggerInfo = false
		loggerWarn = false
		loggerError = false
	currentScene = get_tree().get_root().get_child(get_tree().get_root().get_child_count() - 1)
	logInfo("GameController","_ready","Initialization done")

func _process(_delta):
	if Input.is_action_just_pressed("debug_console") and debuggingMode:
		get_tree().get_root().add_child(debugConsoleScene)

func switchToMainScreen(loadGame):
	logInfo("GameController","switchToMainScreen","Request for scene switch to MainScreen accepted")
	logInfo("GameController","switchScene","GCSC Waiting for all threads to finish execution")
	if loadGame:
		call_deferred("_switchScene_deferred", "res://Scenes/MainScreen.tscn", false)
	else:
		call_deferred("_switchScene_deferred", "res://Scenes/MainScreen.tscn", false)

func switchScene(path):
	logInfo("GameController","switchScene","Request for scene switch accepted")
	gamePaused = true
	logInfo("GameController","switchScene","Waiting for all threads to finish execution")
	call_deferred("_switchScene_deferred", path, false)

func _switchScene_deferred(path, isMainScreen):
	logInfo("GameController","_switchScene_deferred","Threads finished execution")
	_transition_start()
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 1:
			continue
		else:
			break
	logInfo("GameController","_switchScene_deferred","Removing scenes")
	for child in get_tree().get_root().get_children():
		if child.name == "gameController" or child.name == "sp" or child.name == "gd" or child.name == "scene_manager" or child.name == "Transition" or child.name == music.name or child.name == "CrashHandler":
			continue
		logInfo("GameController","_switchScene_deferred","Removing child " + child.name)
		get_tree().get_root().remove_child(child)
	if currentScene != null:
		logInfo("GameController","_switchScene_deferred","Freeing currentScene")
		currentScene.free()
	logInfo("GameController","_switchScene_deferred","Displaying loading scene")
	get_tree().get_root().add_child(loadingScene)
	get_tree().set_current_scene(loadingScene)
	transitionState = 2
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 3:
			continue
		else:
			break
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 2:
			continue
		else:
			break
	var waitnum = 0
	if isMainScreen:
		waitnum = 8.25
	else:
		waitnum = 1.25
	logInfo("GameController","_switchScene_deferred","Waiting " + str(waitnum) + "s")
	yield(get_tree().create_timer(waitnum),"timeout")
	logInfo("GameController","_switchScene_deferred","Starting thread")
	thread = Thread.new()
	thread.start(self, "_switchScene_thread_start", path)

func _switchScene_thread_start(path):
	logInfo("GameController","_switchScene_thread_start","Loading and instancing scene")
	var loader = ResourceLoader.load_interactive(path)
	while true:
		if loader.poll() == ERR_FILE_EOF:
			currentScene = loader.get_resource().instance()
			break
	call_deferred("_switchScene_thread_end")

func _switchScene_thread_end():
	_transition_start()
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 1:
			continue
		else:
			break
	logInfo("GameController","_switchScene_thread_end","Displaying scene " + currentScene.name)
	get_tree().get_root().add_child(currentScene)
	get_tree().set_current_scene(currentScene)
	if enableCounters:
		logInfo("GameController","_switchScene_thread_end","Adding counters")
		get_tree().get_root().add_child(countersScene)
	logInfo("GameController","_switchScene_thread_end","Removing loading scene")
	for child in get_tree().get_root().get_children():
		if child.name == "LoadingScene":
			get_tree().get_root().remove_child(child)
	transitionState = 2
	gamePaused = false
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 3:
			continue
		else:
			break
	logInfo("GameController","_switchScene_thread_end","Execution done")

func transitionSwitch():
	logInfo("GameController","transitionSwitch","Call to transitionSwitch() detected. Please remove that line from your script.")

func _transition_start():
	changeVolume("volumePaused")
	logInfo("GameController","_transition_start","Adding TransitionScene")
	get_tree().get_root().add_child(transitionScene)
	var transition = get_node("/root/Transition")
	logInfo("GameController","_transition_start","Starting FADEIN transition")
	transitionState = 1
	transition.startTransition(transition.transitionStates.FADEIN)
	yield(get_tree().create_timer(0.5), "timeout")
	logInfo("GameController","_transition_start","FADEIN transition done")
	transitionState = 3
	transitionThread = Thread.new()
	transitionThread.start(self,"_transition_start_thread",transition)

func _transition_start_thread(transition):
	logInfo("GameController","_transition_start","Waiting for FADEOUT allowance")
	while true:
		yield(get_tree().create_timer(0.01), "timeout")
		if transitionState == 2:
			break
		else:
			continue
	logInfo("GameController","_transition_start","Starting FADEOUT transition")
	transition.startTransition(transition.transitionStates.FADEOUT)
	yield(get_tree().create_timer(0.5), "timeout")
	logInfo("GameController","_transition_start","FADEOUT transition done")
	changeVolume("volumeDefault")
	_transition_end()

func _transition_end():
	for child in get_tree().get_root().get_children():
		if child.name == "Transition":
			logInfo("GameController","_transition_end","Removing TransitionScene")
			get_tree().get_root().remove_child(child)
			transitionState = 0

func _logger(logtype,script,function,message):
	if logger:
		if logtype == logTypes.CALL:
			logtype = "CALL"
		elif logtype == logTypes.ERRO:
			logtype = "ERRO"
		elif logtype == logTypes.INFO:
			logtype = "INFO"
		elif logtype == logTypes.WARN:
			logtype = "WARN"
		elif logtype == logTypes.VERB:
			logtype = "VERB"
		elif logtype == logTypes.VEPO:
			logtype = "VEPO"
		print(logSchema.replace("%logtype%",logtype).replace("%script%",script).replace("%function%",function).replace("%message%",message))
		sessionLog.append(logSchema.replace("%logtype%",logtype).replace("%script%",script).replace("%function%",function).replace("%message%",message))

func logCall(script,function,args):
	if not enableFunctionCalls:
		return
	if function == "_ready":
		_logger(logTypes.CALL,script,function,"Starting initialization of script " + script)
		return
	args = str(args)
	if args == "" or args == null or args == "Null":
		_logger(logTypes.CALL,script,function,"Function was called")
	else:
		_logger(logTypes.CALL,script,function,"Function was called with arguments " + args)

func logInfo(script,function,message):
	if not loggerInfo:
		return
	_logger(logTypes.INFO,script,function,message)

func logWarn(script,function,message):
	if not loggerWarn:
		return
	_logger(logTypes.WARN,script,function,message)

func logError(script,function,message):
	if not loggerError:
		return
	_logger(logTypes.ERRO,script,function,message)

func logVerbose(script,function,message):
	if not enableVerbosity:
		return
	_logger(logTypes.VERB,script,function,message)

func logVelocity(script,function,messageVelocityPosition):
	if not enableVelocityMessages:
		return
	var message = null
	if typeof(messageVelocityPosition) == typeof(Vector2(0,0)):
		message = "VELO/POS » X: " + str(messageVelocityPosition.x) + " | Y: " + str(messageVelocityPosition.y)
	else:
		message = str(messageVelocityPosition)
	_logger(logTypes.VEPO,script,function,message)

func loadSound(effect):
	if not soundAllow:
		return
	if effect == null or effect == "":
		logInfo("GameController","loadSound","Argument is null")
	soundPlaying = effect
	logInfo("GameController","loadSound","Loading sound " + soundPlaying)
	soundStream = load("res://Sounds/" + soundPlaying + ".ogg")
	sound.stream = soundStream
	sound.volume_db = 0
	get_tree().get_root().add_child(sound)

func playSound(delay):
	if not soundAllow:
		return
	if soundStream == null:
		logInfo("GameController","playSound","Sound stream is not loaded")
		return
	threadSoundPlay = Thread.new()
	threadSoundPlay.start(self, "_playSound_thread",delay)

func _playSound_thread(delay):
	yield(get_tree().create_timer(delay), "timeout")
	for child in get_tree().get_root().get_children():
		if child.name == sound.name:
			logInfo("GameController","playSound","Starting playback")
			child.play(0)

func stopSound(wildcardOrSound):
	for child in get_tree().get_root().get_children():
		if typeof(wildcardOrSound) == typeof(true):
			if wildcardOrSound:
				if child.name == sound.name:
					logInfo("GameController","stopSound","Stopping playback of every sound")
					get_tree().get_root().remove_child(child)
			else:
				logInfo("GameController","stopSound","Wildcard is disabled")
		else:
			if child.name == sound.name and sound.stream.resource_path == "res://Sounds/" + sound + ".ogg":
				logInfo("GameController","stopSound","Stopping playback of sound " + sound)
				get_tree().get_root().remove_child(child)

func loadMusic(song):
	if not musicAllow:
		return
	if song == null or song == "":
		logInfo("GameController","loadMusic","Argument is null")
	stopMusic()
	musicPlaying = song
	logInfo("GameController","loadMusic","Loading music " + musicPlaying)
	musicStream = load("res://Sounds/Music/" + musicPlaying + ".ogg")
	music.stream = musicStream
	music.volume_db = musicVolumeLoad
	musicVolume = musicVolumeLoad
	get_tree().get_root().add_child(music)

func playMusic(delay):
	if not musicAllow:
		return
	if musicStream == null:
		logInfo("GameController","playMusic","Music stream is not loaded")
		return
	threadMusicPlay = Thread.new()
	threadMusicPlay.start(self,"_playMusic_thread",delay)

func _playMusic_thread(delay):
	if not delay == null:
		yield(get_tree().create_timer(delay), "timeout")
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			logInfo("GameController","playMusic","Starting playback")
			child.play(0)

func stopMusic():
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			logInfo("GameController","stopMusic","Stopping playback")
			get_tree().get_root().remove_child(child)

func pauseMusic():
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			if child.playing:
				logInfo("GameController","pauseMusic","Pausing playback")
				child.playing = false

func continueMusic():
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			if not child.playing:
				logInfo("GameController","continueMusic","Continuing playback")
				child.playing = true

func changeVolume(valueOrSetValue):
	logInfo("GameController","changeVolume","Changing volume")
	if typeof(valueOrSetValue) == typeof(""):
		if valueOrSetValue == "volumeDefault":
			threadMusic = Thread.new()
			threadMusic.start(self, "_changeVolume_thread", musicVolumeDefault)
		elif valueOrSetValue == "volumePaused":
			threadMusic = Thread.new()
			threadMusic.start(self, "_changeVolume_thread", musicVolumePaused)
		else:
			logInfo("GameController","changeVolume","Invalid SetValue. Please use volumeDefault, volumePaused or a custom number")
			return
	elif typeof(valueOrSetValue) == typeof(float(0)):
		threadMusic = Thread.new()
		threadMusic.start(self, "_changeVolume_thread", valueOrSetValue)
	else:
		logInfo("GameController","changeVolume","Invalid argument type. Please use a volumeDefault, volumePaused or a custom number")
		return

func _changeVolume_thread(volume):
	var musicplayer = null
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			musicplayer = child
	if musicplayer == null:
		logInfo("GameController","changeVolume","Music player not found")
		return
	while true:
		if volume == musicplayer.volume_db:
			break
		elif volume >= musicplayer.volume_db:
			musicplayer.volume_db += 1
		elif volume <= musicplayer.volume_db:
			musicplayer.volume_db -= 1
		logInfo("GameController","changeVolume","Volume: " + str(musicplayer.volume_db))
		musicVolume = musicplayer.volume_db
		yield(get_tree().create_timer(0.05), "timeout")

func isMusicPlaying():
	for child in get_tree().get_root().get_children():
		if child.name == music.name:
			return child.playing

func crashJessist(script,function,debugInfo):
	if crashed:
		return
	crashed = true
	logInfo("GameController","crashJessist","Pausing game")
	gamePaused = true
	logInfo("GameController","crashJessist","Loading CrashHandler scene")
	crashScene.debuggingInformation = [script,function,debugInfo]
	get_tree().get_root().add_child(crashScene)
	get_tree().set_current_scene(crashScene)
	logInfo("GameController","crashJessist","Waiting for all threads to finish execution")
	call_deferred("_crashJessist_deferred")

func _crashJessist_deferred():
	logInfo("GameController","_crashJessist_deferred","Killing scenes")
	for child in get_tree().get_root().get_children():
		if child.name == "gameController" or child.name == "sp" or child.name == "gd" or child.name == "scene_manager" or child.name == "Transition" or child.name == music.name or child.name == "CrashHandler":
			continue
		logInfo("GameController","_crashJessist_deferred","Removing child " + child.name)
		get_tree().get_root().remove_child(child)
	if currentScene != null:
		currentScene.free()

func getFullLog():
	logInfo("GameController","getFullLog","Collecting full log file")
	var sessionLogTmp = sessionLog
	sessionLogTmp.append("LOGSESSIONEND")
	var logfile = str(sessionLogTmp)
	logfile = logfile.replace("[LOGSESSIONSTART, ","")
	logfile = logfile.replace(", LOGSESSIONEND]","")
	logfile = logfile.replace(", ","\n")
	logInfo("GameController","getFullLog","Collected full log file")
	return logfile

func getLog(lines):
	logInfo("GameController","getFullLog","Collecting last " + str(lines) + " lines of the log file")
	var sessionLogTmp = Array()
	sessionLogTmp.append("LOGSESSIONSTART")
	sessionLogTmp.append_array(sessionLog.slice(sessionLog.size() - lines, sessionLog.size()))
	sessionLogTmp.append("LOGSESSIONEND")
	var logfile = str(sessionLogTmp)
	logfile = logfile.replace("[LOGSESSIONSTART, ","")
	logfile = logfile.replace(", LOGSESSIONEND]","")
	logfile = logfile.replace(", ","\n")
	logInfo("GameController","getFullLog","Collected " + str(lines))
	return logfile

func dialog(diag,entrypoint):
	logInfo("GameController","dialog","Dialog request aknowledged")
	var res = null
	if diag == "Timeleton":
		res = preload("res://Dialog/Timeleton.tres")
	elif diag == "GameEnd":
		res = preload("res://Dialog/GameEnd.tres")
	else:
		logError("GameController","dialogStart","Can't start dialog, invalid dialog specified")
		return
	logInfo("GameController","dialog","Displaying dialog")
	_showDiag(entrypoint, res)

func _showDiag(title: String, resource: DialogueResource) -> void:
	var dialogue = yield(DialogueManager.get_next_dialogue_line(title, resource), "completed")
	if dialogue != null:
		var balloon = dialogBalloon
		balloon.dialogue = dialogue
		add_child(balloon)
		# Dialogue might have response options so we have to wait and see
		# what the player chose. "actioned" is emitted and passes the "next_id"
		# once the player has made their choice.
		_showDiag(yield(balloon, "actioned"), resource)