extends Control
@onready var grid_layer: TileMapLayer = $"../../../GridLayer"
@onready var truck_button: Button = $CanvasLayer/Panel/truckButton
@onready var tile_map_layer: TileMapLayer = $"../../../TileMapLayer"
@onready var truck_building_placer: Node2D = $"../../../truckBuilding/truckBuildingPlacer"
@onready var tile_map_layer_2: TileMapLayer = $"../../../TileMapLayer2"
@onready var canvas_layer: CanvasLayer = $CanvasLayer
@onready var truck_building: Node2D = $"../../../truckBuilding"
@onready var map: Node2D = $"../../.."
@onready var tower_building_placer: Node2D = $"../../../resourceTower/towerBuildingPlacer"
@onready var resource_tower: Node2D = $"../../../resourceTower"
@onready var tank_building_placer: Node2D = $"../../../tankBuilding/tankBuildingPlacer"
@onready var tank_building: Node2D = $"../../../tankBuilding"
@onready var barracks_placer: Node2D = $"../../../barracks/barracksPlacer"
@onready var barracks: Node2D = $"../../../barracks"


const gridSize = Vector2(64, 64)
const SPEED = 200

var fadedColor = Color(1,1,1,.75)
var placedColor = Color(1,1,1,1)

func _physics_process(delta: float) -> void:
	if (Globals.truckPressed == true \
	or Globals.barracksPressed == true \
	or Globals.tankPressed == true \
	or Globals.towerPressed == true):
		nodeFollowsMouse()

func showBarracks():
	if Globals.barracksPressed == true:
		barracks_placer.visible = true
		barracks_placer.modulate = fadedColor

func hideBarracks():
	barracks_placer.visible = false

func showTruck():
	# translucent appearance of the building
	if Globals.truckPressed == true:
		truck_building_placer.visible = true
		truck_building_placer.modulate = fadedColor

func hideTruck():
	truck_building_placer.visible = false

func showTower():
	if Globals.towerPressed == true:
		tower_building_placer.visible = true
		tower_building_placer.modulate = fadedColor

func hideTower():
	truck_building_placer.visible = false

func showTank():
	if Globals.tankPressed == true:
		tank_building_placer.visible = true
		tank_building_placer.modulate = fadedColor

func hideTank():
	tank_building_placer.visible = false

func nodeFollowsMouse():
	# truck building follows mouse cursor and snaps to grid
	if Globals.truckPressed == true:
		truck_building_placer.position = truck_building_placer.get_global_mouse_position().snapped(gridSize)
	if Globals.towerPressed == true:
		tower_building_placer.position = tower_building_placer.get_global_mouse_position().snapped(gridSize)
	if Globals.tankPressed == true:
		tank_building_placer.position = tank_building_placer.get_global_mouse_position().snapped(gridSize)
	if Globals.barracksPressed == true:
		barracks_placer.position = barracks_placer.get_global_mouse_position().snapped(gridSize)

func placeBarracks():
	var originalBarracks = get_node("../../../barracks")
	var newBarracks = originalBarracks.duplicate()
	map.add_child(newBarracks)
	Globals.newBarracksUnits += 1
	Globals.newBuildingUnits = Globals.newTankUnits + Globals.newTruckUnits + Globals.newTowerUnits + Globals.newBarracksUnits
	Globals.newBuildingUnitsHP[str(map.get_child(8+Globals.newBuildingUnits))] = 100
	map.get_child(8 + Globals.newBarracksUnits).get_child(2).modulate = placedColor
	hideBarracks()
	hideGrid()
	print(Globals.newBuildingUnitsHP)
	Globals.barracksPressed = false

func placeTruck():
	var originalTruck = get_node("../../../truckBuilding")
	var newTruck = originalTruck.duplicate()
	map.add_child(newTruck)
	Globals.newTruckUnits += 1
	Globals.newBuildingUnits = Globals.newTankUnits + Globals.newTruckUnits + Globals.newTowerUnits + Globals.newBarracksUnits
	Globals.newBuildingUnitsHP[str(map.get_child(8+Globals.newBuildingUnits))] = 150
	map.get_child(8 + Globals.newTruckUnits).get_child(2).modulate = placedColor
	hideTruck()
	hideGrid()
	print(Globals.newBuildingUnitsHP)
	Globals.truckPressed = false

func placeTower():
	var originalTower = get_node("../../../resourceTower")
	var newTower = originalTower.duplicate()
	map.add_child(newTower)
	Globals.newTowerUnits += 1
	Globals.newBuildingUnits = Globals.newTankUnits + Globals.newTruckUnits + Globals.newTowerUnits + Globals.newBarracksUnits
	Globals.newBuildingUnitsHP[str(map.get_child(8+Globals.newBuildingUnits))] = 50
	map.get_child(8 + Globals.newTowerUnits).get_child(2).modulate = placedColor
	hideTower()
	hideGrid()
	print(Globals.newBuildingUnitsHP)
	Globals.towerPressed = false

func placeTank():
	var originalTank = get_node("../../../tankBuilding")
	var newTank = originalTank.duplicate()
	map.add_child(newTank)
	Globals.newTankUnits += 1
	Globals.newBuildingUnits = Globals.newTankUnits + Globals.newTruckUnits + Globals.newTowerUnits + Globals.newBarracksUnits
	Globals.newBuildingUnitsHP[str(map.get_child(8+Globals.newBuildingUnits))] = 200
	map.get_child(8 + Globals.newTankUnits).get_child(2).modulate = placedColor
	hideTank()
	hideGrid()
	print(Globals.newBuildingUnitsHP)
	Globals.tankPressed = false

func _unhandled_input(event: InputEvent) -> void:
	# if left click is pressed:
		# place building on grid location, then hide the ui and grid
	if event is InputEventMouseButton and Globals.truckPressed == true:
		if event.button_index == MOUSE_BUTTON_LEFT:
			placeTruck()
		# if right click is pressed:
		# kill the process and hide the ui
		elif event.button_index == MOUSE_BUTTON_RIGHT:
			hideTruck()
			hideGrid()
			Globals.truckPressed = false

	if event is InputEventMouseButton and Globals.towerPressed == true:
		if event.button_index == MOUSE_BUTTON_LEFT:
			placeTower()
		elif event.button_index == MOUSE_BUTTON_RIGHT:
			hideTower()
			hideGrid()
			Globals.towerPressed = false

	if event is InputEventMouseButton and Globals.tankPressed == true:
		if event.button_index == MOUSE_BUTTON_LEFT:
			placeTank()
		elif event.button_index == MOUSE_BUTTON_RIGHT:
			hideTank()
			hideGrid()
			Globals.tankPressed = false

	if event is InputEventMouseButton and Globals.barracksPressed == true:
		if event.button_index == MOUSE_BUTTON_LEFT:
			placeBarracks()
		elif event.button_index == MOUSE_BUTTON_RIGHT:
			hideBarracks()
			hideGrid()
			Globals.barracksPressed = false
# displays a grid
func showGrid():
	if (Globals.truckPressed == true \
	or Globals.barracksPressed == true \
	or Globals.tankPressed == true \
	or Globals.towerPressed == true):
		tile_map_layer.modulate = Color(1,1,1,.5)
		grid_layer.visible = true

func hideGrid():
	tile_map_layer.modulate = Color(1,1,1,1)
	grid_layer.visible = false

func _on_truck_button_pressed() -> void:
	Globals.truckPressed = true
	canvas_layer.visible = false
	showGrid()
	showTruck()

func _on_tower_button_pressed() -> void:
	Globals.towerPressed = true
	canvas_layer.visible = false
	showGrid()
	showTower()

func _on_tank_button_pressed() -> void:
	Globals.tankPressed = true
	canvas_layer.visible = false
	showGrid()
	showTank()

func _on_barracks_button_pressed() -> void:
	Globals.barracksPressed = true
	canvas_layer.visible = false
	showGrid()
	showBarracks()