extends Control

signal dialogue_choice_selected(index: int, text: String)

const CHOICE_NORMAL := preload("res://assets/ccs_cases_2/images/doctor/dialogue-choice-normal.png")
const CHOICE_HOVER := preload("res://assets/ccs_cases_2/images/doctor/dialogue-choice-hover.png")
const CHOICE_PRESSED := preload("res://assets/ccs_cases_2/images/doctor/dialogue-choice-pressed.png")
const CHOICE_CROP := Rect2(80.0, 200.0, 1610.0, 485.0)

@onready var hour_hand: Node2D = $ClockMount/HourHand
@onready var minute_hand: Node2D = $ClockMount/MinuteHand
@onready var second_hand: Node2D = $ClockMount/SecondHand
@onready var patient: TextureRect = $Patient
@onready var dialogue_bubble: Control = $DialogueBubble
@onready var dialogue_text: Label = $DialogueBubble/Text
@onready var choice_container: VBoxContainer = $DialogueChoices

var blink_tween: Tween
var dialogue_tween: Tween


func _ready() -> void:
	_update_clock()
	_schedule_patient_blink()
	show_patient_dialogue("Hello, doctor.")
	show_dialogue_choices([
		"What brings you in today?",
		"How are you feeling today?",
	])


func _process(_delta: float) -> void:
	_update_clock()


func _update_clock() -> void:
	var time := Time.get_time_dict_from_system()
	var unix_time := Time.get_unix_time_from_system()
	var second := float(time.second) + fmod(unix_time, 1.0)
	var minute := float(time.minute) + second / 60.0
	var hour := float(time.hour % 12) + minute / 60.0
	hour_hand.rotation = TAU * hour / 12.0
	minute_hand.rotation = TAU * minute / 60.0
	second_hand.rotation = TAU * second / 60.0


func _schedule_patient_blink() -> void:
	blink_tween = create_tween()
	blink_tween.tween_interval(randf_range(2.8, 5.2))
	blink_tween.tween_method(_set_patient_blink, 0.0, 1.0, 0.075).set_trans(
		Tween.TRANS_SINE
	).set_ease(Tween.EASE_IN)
	blink_tween.tween_interval(0.045)
	blink_tween.tween_method(_set_patient_blink, 1.0, 0.0, 0.10).set_trans(
		Tween.TRANS_SINE
	).set_ease(Tween.EASE_OUT)
	blink_tween.tween_callback(_schedule_patient_blink)


func _set_patient_blink(amount: float) -> void:
	patient.material.set_shader_parameter("blink_amount", amount)


func show_patient_dialogue(text: String, characters_per_second: float = 35.0) -> void:
	if dialogue_tween and dialogue_tween.is_valid():
		dialogue_tween.kill()
	dialogue_text.text = text
	dialogue_text.visible_ratio = 0.0
	dialogue_bubble.visible = true
	_resize_dialogue_bubble()
	var reveal_duration := float(text.length()) / maxf(characters_per_second, 1.0)
	dialogue_tween = create_tween()
	dialogue_tween.tween_property(dialogue_text, "visible_ratio", 1.0, reveal_duration)


func hide_patient_dialogue() -> void:
	if dialogue_tween and dialogue_tween.is_valid():
		dialogue_tween.kill()
	dialogue_bubble.visible = false


func is_patient_dialogue_visible() -> bool:
	return dialogue_bubble.visible


func _resize_dialogue_bubble() -> void:
	# Label wrapping is calculated from the fixed text width immediately after
	# assignment, so explicit newlines and automatic wraps both affect height.
	var line_count := maxi(dialogue_text.get_line_count(), 1)
	var target_height := clampf(110.0 + line_count * 30.0, 140.0, 320.0)
	dialogue_bubble.size.y = target_height


func show_dialogue_choices(options: Array[String]) -> void:
	hide_dialogue_choices()
	var stack_height := options.size() * 97.0 + 8.0
	choice_container.offset_top = -4.0 - stack_height
	for index in options.size():
		var option_text := options[index]
		var button := TextureButton.new()
		button.custom_minimum_size = Vector2(420.0, 105.0)
		button.ignore_texture_size = true
		button.stretch_mode = TextureButton.STRETCH_SCALE
		button.texture_normal = _crop_choice_texture(CHOICE_NORMAL)
		button.texture_hover = _crop_choice_texture(CHOICE_HOVER)
		button.texture_pressed = _crop_choice_texture(CHOICE_PRESSED)
		button.self_modulate = Color(1.0, 1.0, 1.0, 0.86)
		button.focus_mode = Control.FOCUS_ALL
		button.mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND
		button.mouse_entered.connect(_on_choice_hover.bind(button, true))
		button.mouse_exited.connect(_on_choice_hover.bind(button, false))
		button.button_down.connect(_on_choice_pressed_visual.bind(button, true))
		button.button_up.connect(_on_choice_pressed_visual.bind(button, false))
		button.pressed.connect(_on_dialogue_choice_pressed.bind(index, option_text))

		var label := Label.new()
		label.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
		label.offset_left = 48.0
		label.offset_top = 14.0
		label.offset_right = -48.0
		label.offset_bottom = -14.0
		label.mouse_filter = Control.MOUSE_FILTER_IGNORE
		label.add_theme_color_override("font_color", Color(0.055, 0.105, 0.145))
		label.add_theme_font_size_override("font_size", 19)
		label.text = option_text
		label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
		label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
		button.add_child(label)
		choice_container.add_child(button)
	choice_container.visible = not options.is_empty()


func hide_dialogue_choices() -> void:
	for child in choice_container.get_children():
		child.queue_free()
	choice_container.visible = false


func _crop_choice_texture(source: Texture2D) -> AtlasTexture:
	var cropped := AtlasTexture.new()
	cropped.atlas = source
	cropped.region = CHOICE_CROP
	cropped.filter_clip = true
	return cropped


func _on_choice_hover(button: TextureButton, hovered: bool) -> void:
	button.self_modulate = (
		Color(1.08, 1.05, 0.96, 0.94)
		if hovered
		else Color(1.0, 1.0, 1.0, 0.86)
	)


func _on_choice_pressed_visual(button: TextureButton, pressed: bool) -> void:
	button.position.y += 2.0 if pressed else -2.0


func _on_dialogue_choice_pressed(index: int, option_text: String) -> void:
	dialogue_choice_selected.emit(index, option_text)
	hide_dialogue_choices()