# smgr.gd
# Scene Manager
# 
# This file is part of StarOpenSource CORE (SOSCORE)
# Made by the StarOpenSource Project and Contributers
# Licensed under GNU GPLv3
extends Node

@onready
var core = get_node(NodePath("/root/core"))
var ccr = null
var ccr_game = null
var ccr_game_inuse = false
var ccr_menu = null
var ccr_menu_names = []
var ccr_cutscene = null
var ccr_cutscene_inuse = false
var ccr_debug = null
var ccr_debug_names = []

func initialize() -> void:
	if core.protection_mode: return
	Logger.diag("smgr","Constructing CORE Scene Root (CCR)")
	ccr = Control.new()
	ccr.name = "ccr"
	Logger.diag("smgr","Adding CCR to /root/")
	get_tree().root.add_child(ccr)
	Logger.diag("smgr","Migrating COREBackground to CCR")
	var corebg = get_tree().current_scene
	Logger.diag("smgr","Reconstructing COREBackground to CCR")
	var corebg_log = corebg.get_node(NodePath("Background/Log")).text
	corebg.get_node(NodePath("Background/Log")).rmconnect()
	get_tree().current_scene.queue_free()
	var corebg_new = ResourceLoader.load("res://CORE/background.tscn").instantiate()
	ccr.add_child(corebg_new)
	corebg_new.get_node(NodePath("Background/Log")).text = corebg_log
	Logger.diag("smgr","COREBackground migration complete.")
	Logger.diag("smgr","Adding overlays")
	add_overlays()
	core.setready()

func add_game(resname:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Adding game scene")
	if ccr_game_inuse:
		Logger.error("smgr","Failed adding game scene: Only one game scene is allowed")
		return false
	var res = core.resmgr.getres(resname)
	if res == null or res.get_class() != "PackedScene":
		Logger.error("smgr","Resource is not type of PackedScene")
		return false
	ccr_game.add_child(res.instantiate())
	ccr_game_inuse = true
	Logger.diag("smgr","Added game scene")
	return true

func remove_game() -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Removing game scene")
	if !ccr_game_inuse:
		Logger.error("smgr","Failed removing game scene: No game scene is active")
		return false
	ccr_game.remove_child(ccr_game.get_child(0))
	ccr_game_inuse = false
	Logger.diag("smgr","Removed game scene")
	return true

func add_menu(resname:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Adding menu scene \"" + resname + "\"")
	if ccr_menu_names.has(resname):
		Logger.error("smgr","Failed adding menu scene: Menu scene with name \"" + resname + "\" already exists")
		return false
	var res = core.resmgr.getres(resname)
	if res == null or res.get_class() != "PackedScene":
		Logger.error("smgr","Resource is not type of PackedScene")
		return false
	ccr_menu.add_child(res.instantiate())
	ccr_menu_names.append(resname)
	Logger.diag("smgr","Added menu scene \"" + resname + "\"")
	return true

func remove_menu(scene_name:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Removing menu scene \"" + scene_name + "\"")
	if !ccr_menu_names.has(scene_name):
		Logger.error("smgr","Failed removing menu scene: Menu scene with name \"" + scene_name + "\" does not exist")
		return false
	for i in ccr_menu.get_children():
		if i.name == scene_name:
			ccr_menu.remove_child(i)
			break
	ccr_menu_names.erase(scene_name)
	Logger.diag("smgr","Removed menu scene \"" + scene_name + "\"")
	return true

func add_cutscene(resname:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Adding cutscene scene")
	if ccr_cutscene_inuse:
		Logger.error("smgr","Failed adding cutscene scene: Only one cutscene scene is allowed")
		return false
	var res = core.resmgr.getres(resname)
	if res == null or res.get_class() != "PackedScene":
		Logger.error("smgr","Resource is not type of PackedScene")
		return false
	ccr_cutscene.add_child(res.instantiate())
	ccr_cutscene_inuse = true
	Logger.diag("smgr","Added cutscene scene")
	return true

func remove_cutscene() -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Removing cutscene scene")
	if !ccr_cutscene_inuse:
		Logger.error("smgr","Failed removing cutscene scene: No cutscene scene is active")
		return false
	ccr_cutscene.remove_child(ccr_cutscene.get_child(0))
	ccr_cutscene_inuse = false
	Logger.diag("smgr","Removed cutscene scene")
	return true

func add_debug(resname:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Adding debug scene \"" + resname + "\"")
	if ccr_debug_names.has(resname):
		Logger.error("smgr","Failed adding debug scene: Debug scene with name \"" + resname + "\" already exists")
		return false
	var res = core.resmgr.getres(resname)
	if res == null or res.get_class() != "PackedScene":
		Logger.error("smgr","Resource is not type of PackedScene")
		return false
	ccr_debug.add_child(res.instantiate())
	ccr_debug_names.append(resname)
	Logger.diag("smgr","Added debug scene \"" + resname + "\"")
	return true

func remove_debug(scene_name:String) -> bool:
	if core.protection_mode: return false
	Logger.diag("smgr","Removing debug scene \"" + scene_name + "\"")
	if !ccr_menu_names.has(scene_name):
		Logger.error("smgr","Failed removing debug scene: Debug scene with name \"" + scene_name + "\" does not exist")
		return false
	for i in ccr_debug.get_children():
		if i.name == scene_name:
			ccr_debug.remove_child(i)
			break
	ccr_debug_names.erase(scene_name)
	Logger.diag("smgr","Removed debug scene \"" + scene_name + "\"")
	return true

func add_overlays() -> void:
	if core.protection_mode: return
	Logger.diag("smgr","Adding game overlay")
	ccr_game = Control.new()
	ccr_game.name = "GameOverlay"
	ccr.add_child(ccr_game)
	Logger.diag("smgr","Adding menu overlay")
	ccr_menu = Control.new()
	ccr_menu.name = "MenuOverlay"
	ccr.add_child(ccr_menu)
	Logger.diag("smgr","Adding cutscene overlay")
	ccr_cutscene = Control.new()
	ccr_cutscene.name = "CutsceneOverlay"
	ccr.add_child(ccr_cutscene)
	Logger.diag("smgr","Adding debug overlay")
	ccr_debug = Control.new()
	ccr_debug.name = "DebugOverlay"
	ccr.add_child(ccr_debug)