class_name VillagerFieldNoteHud
extends Control

const ENTER_OFFSET := 9.0
const EXIT_OFFSET := 4.0

@export var player: Node
@export var simulation_manager: Node

@onready var accent: ColorRect = $Accent
@onready var copy: VBoxContainer = $Copy
@onready var name_label: Label = $Copy/Name
@onready var activity_label: Label = $Copy/Activity
@onready var target_label: Label = $Copy/Target
@onready var carrying_label: Label = $Copy/Carrying
@onready var reason_label: Label = $Copy/Reason
@onready var need_label: Label = $Copy/Need

var copy_resting_position: Vector2
var current_context_key := ""
var motion_tween: Tween
var motion_version := 0
var is_hiding := false


func _ready() -> void:
	copy_resting_position = copy.position
	visible = false
	modulate.a = 0.0
	if simulation_manager != null and simulation_manager.has_signal("state_restored"):
		simulation_manager.state_restored.connect(_on_state_restored)
	call_deferred("refresh_note", true)


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


func refresh_note(force: bool = false) -> void:
	if player == null or not player.has_method("get_nearby_villager_inspection"):
		current_context_key = ""
		_hide_note()
		return
	var context: VillagerInspectionResult = player.get_nearby_villager_inspection()
	if context == null:
		if force or not current_context_key.is_empty():
			current_context_key = ""
			_hide_note()
		return
	var next_key := context.cache_key()
	if not force and next_key == current_context_key:
		return
	current_context_key = next_key
	_present(context, true)


func _present(context: VillagerInspectionResult, animate: bool) -> void:
	motion_version += 1
	if motion_tween != null and motion_tween.is_valid():
		motion_tween.kill()
	motion_tween = null
	is_hiding = false
	name_label.text = context.npc_name
	activity_label.text = context.activity_text()
	target_label.text = "Target · %s" % context.target_name
	carrying_label.text = "Carrying · %s" % context.carrying_text()
	reason_label.text = "Why · %s" % context.decision_reason
	_present_opportunity_note(context.opportunity_note)
	visible = true
	accent.pivot_offset = accent.size * 0.5
	if not animate:
		copy.position = copy_resting_position
		modulate.a = 1.0
		accent.scale.y = 1.0
		return
	copy.position = copy_resting_position + Vector2(-ENTER_OFFSET, 0.0)
	modulate.a = 0.0
	accent.scale.y = 0.18
	motion_tween = create_tween().set_parallel(true)
	motion_tween.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
	motion_tween.tween_property(copy, "position", copy_resting_position, 0.2)
	motion_tween.tween_property(self, "modulate:a", 1.0, 0.16)
	motion_tween.tween_property(accent, "scale:y", 1.0, 0.26)


func _present_opportunity_note(note: VillagerOpportunityNote) -> void:
	if note == null or not note.has_need:
		need_label.visible = false
		need_label.text = "Need · "
		return
	need_label.visible = true
	need_label.text = "Need · %s\n%s" % [note.need_text, note.help_text]


func _hide_note() -> void:
	if not visible or is_hiding:
		return
	is_hiding = true
	motion_version += 1
	var hide_version := motion_version
	if motion_tween != null and motion_tween.is_valid():
		motion_tween.kill()
	motion_tween = null
	motion_tween = create_tween().set_parallel(true)
	motion_tween.set_trans(Tween.TRANS_SINE).set_ease(Tween.EASE_IN)
	motion_tween.tween_property(self, "modulate:a", 0.0, 0.14)
	motion_tween.tween_property(copy, "position:x", copy_resting_position.x - EXIT_OFFSET, 0.14)
	motion_tween.finished.connect(_on_hide_finished.bind(hide_version), CONNECT_ONE_SHOT)


func _on_hide_finished(hide_version: int) -> void:
	if motion_version != hide_version:
		return
	motion_tween = null
	is_hiding = false
	if current_context_key.is_empty():
		visible = false


func _on_state_restored() -> void:
	current_context_key = ""
	call_deferred("refresh_note", true)