class_name QuestJournalHud
extends Control

const ENTER_OFFSET := 8.0
const THANKS_SECONDS := 3.4

@export var simulation_manager: Node

@onready var accent: ColorRect = $Accent
@onready var copy: VBoxContainer = $Copy
@onready var standing_label: Label = $Copy/Standing
@onready var quest_label: Label = $Copy/Quest
@onready var quest_kicker: Label = $Copy/QuestKicker
@onready var thanks_label: Label = $Copy/Thanks

var resting_position: Vector2
var feedback_version := 0
var feedback_tween: Tween
var journal_tween: Tween


func _ready() -> void:
	resting_position = position
	visible = false
	modulate.a = 0.0
	if simulation_manager == null:
		push_error("QuestJournalHud: simulation_manager missing")
		return
	if simulation_manager.has_signal("player_quest_opened"):
		simulation_manager.player_quest_opened.connect(_on_quest_opened)
	if simulation_manager.has_signal("player_quest_completed"):
		simulation_manager.player_quest_completed.connect(_on_quest_completed)
	if simulation_manager.has_signal("player_quest_expired"):
		simulation_manager.player_quest_expired.connect(_on_quest_expired)
	if simulation_manager.has_signal("player_standing_changed"):
		simulation_manager.player_standing_changed.connect(_on_standing_changed)
	if simulation_manager.has_signal("opportunity_resolved"):
		simulation_manager.opportunity_resolved.connect(_on_opportunity_resolved)
	if simulation_manager.has_signal("state_restored"):
		simulation_manager.state_restored.connect(_on_state_restored)
	_refresh()


func _on_quest_opened(_quest: PlayerQuestRecord) -> void:
	_refresh()


func _on_quest_expired(_quest: PlayerQuestRecord) -> void:
	_refresh()


func _on_standing_changed(_standing: PlayerStandingRecord) -> void:
	_refresh()


func _on_opportunity_resolved(
	_opportunity: OpportunityStateRecord, _cause_event: EconomicEventRecord
) -> void:
	_refresh()


func _on_state_restored() -> void:
	_refresh()


func _refresh() -> void:
	if simulation_manager == null:
		return
	var standing: PlayerStandingRecord = simulation_manager.get_player_standing()
	if standing == null:
		return
	var standing_text := (
		"Standing · %s · %.0f/100" % [standing.get_tier_name(), standing.get_standing()]
	)
	standing_label.text = standing_text
	var quest: PlayerQuestRecord = simulation_manager.get_active_player_quest()
	if quest == null:
		quest_kicker.text = ""
		quest_label.text = ""
	else:
		var requester_name := _get_npc_name(quest.get_requester_npc_id())
		quest_kicker.text = "ACTIVE QUEST"
		quest_label.text = (
			"%s · bring %.0f %s to the %s"
			% [
				requester_name,
				quest.get_target_amount(),
				String(quest.get_resource_id()).replace("_", " "),
				String(quest.get_target_id()).replace("_", " "),
			]
		)
	var has_content := not quest_kicker.text.is_empty() or not standing_text.is_empty()
	if not has_content:
		return
	if not visible:
		visible = true
		modulate.a = 0.0
		position = resting_position + Vector2(0.0, ENTER_OFFSET)
		if journal_tween != null and journal_tween.is_valid():
			journal_tween.kill()
		journal_tween = create_tween().set_parallel(true)
		journal_tween.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
		journal_tween.tween_property(self, "position", resting_position, 0.3)
		journal_tween.tween_property(self, "modulate:a", 1.0, 0.22)


func _on_quest_completed(quest: PlayerQuestRecord) -> void:
	_refresh()
	var requester_name := _get_npc_name(quest.get_requester_npc_id())
	_show_thanks(
		"Gratitude",
		(
			"%s thanks you for your help.  +%.0f Standing"
			% [requester_name, quest.get_standing_reward()]
		)
	)


func _show_thanks(heading: String, message: String) -> void:
	feedback_version += 1
	var version := feedback_version
	if feedback_tween != null and feedback_tween.is_valid():
		feedback_tween.kill()
	thanks_label.text = "%s\n%s" % [heading, message]
	thanks_label.visible = true
	thanks_label.modulate.a = 0.0
	feedback_tween = create_tween().set_parallel(true)
	feedback_tween.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
	feedback_tween.tween_property(thanks_label, "modulate:a", 1.0, 0.3)
	feedback_tween.chain().tween_interval(THANKS_SECONDS)
	feedback_tween.chain().tween_property(thanks_label, "modulate:a", 0.0, 0.5)
	feedback_tween.chain().tween_callback(
		func() -> void:
			if version == feedback_version:
				thanks_label.visible = false
	)


func _get_npc_name(npc_id: int) -> String:
	for npc in simulation_manager.npcs:
		if npc.id == npc_id:
			return npc.npc_name
	return "Someone"