class_name Overlays
extends Control

## Start-, Pause-, Ausscheide- und Endbildschirm. Meldet Knöpfe per Signal.

signal start_pressed(continue_save: bool)
signal difficulty_changed(d: int)
signal volume_changed(v: float)
signal resume_pressed
signal restart_pressed
signal spectate_pressed

var current: Control = null   ## das offene Overlay, null wenn keins
var volume := 0.8
var difficulty := Data.Difficulty.NORMAL


func _ready() -> void:
	set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	mouse_filter = Control.MOUSE_FILTER_IGNORE


func is_open() -> bool:
	return current != null


func kind() -> String:
	return current.get_meta("kind", "") if current != null else ""


func close() -> void:
	if current != null:
		current.queue_free()
		current = null


func _box(title: String, kind_name: String) -> VBoxContainer:
	close()
	current = ColorRect.new()
	current.color = Color(0, 0, 0, 0.72)
	current.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	current.set_meta("kind", kind_name)
	add_child(current)
	var v := VBoxContainer.new()
	v.position = Vector2(560, 240)
	v.custom_minimum_size = Vector2(480, 0)
	v.add_theme_constant_override("separation", 12)
	current.add_child(v)
	v.add_child(UiKit.label(title, 32))
	return v


func _volume_row() -> HBoxContainer:
	var h := HBoxContainer.new()
	h.add_theme_constant_override("separation", 10)
	h.add_child(UiKit.label("Lautstärke", 14))
	var sl := HSlider.new()
	sl.min_value = 0.0
	sl.max_value = 1.0
	sl.step = 0.05
	sl.value = volume
	sl.custom_minimum_size = Vector2(220, 20)
	sl.focus_mode = Control.FOCUS_NONE
	sl.value_changed.connect(func(v):
		volume = v
		volume_changed.emit(v))
	h.add_child(sl)
	return h


func _difficulty_row() -> HBoxContainer:
	var h := HBoxContainer.new()
	h.add_theme_constant_override("separation", 8)
	h.add_child(UiKit.label("Bots", 14))
	for d in Data.DIFFICULTY_NAMES.size():
		var b := UiKit.button(Data.DIFFICULTY_NAMES[d],
			Color(0.30, 0.50, 0.38) if d == difficulty else Color(0.25, 0.28, 0.36))
		b.custom_minimum_size = Vector2(90, 28)
		b.pressed.connect(func():
			difficulty = d
			difficulty_changed.emit(d))
		h.add_child(b)
	return h


func _button(v: VBoxContainer, text: String, col: Color, cb: Callable, w: float = 200.0) -> Button:
	var b := UiKit.button(text, col)
	b.custom_minimum_size = Vector2(w, 36)
	b.pressed.connect(cb)
	v.add_child(b)
	return b


func show_start(has_save: bool) -> void:
	var v := _box("Elements Autochess", "start")
	v.add_child(UiKit.label("8 Spieler, 100 Leben, Elemente als Traits. Basis wie TFT.", 15,
		Color(0.8, 0.85, 0.95)))
	v.add_child(UiKit.label(
		"Ziehen: Bank ↔ Feld · Rechtsklick: verkaufen · 1–5 kaufen · D würfeln · F einfrieren\\nX Level · Z Verkauf rückgängig · Q/E drehen · Mausrad zoomen · P Pause · Leertaste Kampf",
		13, Color(0.7, 0.72, 0.8)))
	v.add_child(UiKit.label(
		"Konter: Wasser > Feuer > Eis > Wind > Erde > Blitz > Wasser (±20%) · Tank > Schütze > Heiler > Tank (±15%)",
		13, Color(1.0, 0.75, 0.9)))
	v.add_child(_difficulty_row())
	v.add_child(_volume_row())
	if has_save:
		_button(v, "Weiterspielen", Color(0.28, 0.5, 0.36), func(): start_pressed.emit(true))
		_button(v, "Neue Partie", Color(0.25, 0.28, 0.36), func(): start_pressed.emit(false))
	else:
		_button(v, "Spiel starten", Color(0.28, 0.5, 0.36), func(): start_pressed.emit(false))


func show_pause() -> void:
	var v := _box("Pause", "pause")
	v.add_child(UiKit.label("Der Spielstand wurde gespeichert.", 13, Color(0.7, 0.72, 0.8)))
	v.add_child(_volume_row())
	_button(v, "Weiter  [P]", Color(0.28, 0.5, 0.36), func(): resume_pressed.emit())


func show_eliminated(placement: int, round_no: int) -> void:
	var v := _box("Ausgeschieden", "eliminated")
	v.add_child(UiKit.label("Platz %d von 8 nach Runde %d" % [placement, round_no], 20,
		Color(0.95, 0.75, 0.6)))
	var h := HBoxContainer.new()
	h.add_theme_constant_override("separation", 10)
	var watch := UiKit.button("Zuschauen", Color(0.25, 0.28, 0.36))
	watch.custom_minimum_size = Vector2(160, 36)
	watch.pressed.connect(func(): spectate_pressed.emit())
	h.add_child(watch)
	var again := UiKit.button("Neues Spiel", Color(0.28, 0.5, 0.36))
	again.custom_minimum_size = Vector2(160, 36)
	again.pressed.connect(func(): restart_pressed.emit())
	h.add_child(again)
	v.add_child(h)


func show_gameover(game: Game) -> void:
	var v := _box("Spiel vorbei", "gameover")
	var alive := game.alive_players()
	var win: String = alive[0].pname if not alive.is_empty() else "-"
	v.add_child(UiKit.label("Sieger: %s" % win, 20, Color(1.0, 0.85, 0.35)))
	var p := game.human
	var place := p.placement if p.placement > 0 else 1
	v.add_child(UiKit.label("Dein Platz: %d von 8" % place, 18,
		Color(0.6, 0.95, 0.7) if place <= 4 else Color(0.95, 0.6, 0.6)))
	var st := p.stats
	var best := "-"
	var best_star := 0
	for u in p.board_units():
		if u.star > best_star:
			best_star = u.star
			best = u.display_name()
	var lines := [
		"Runden: %d   Siege: %d   Niederlagen: %d" % [game.round_no, st["wins"], st["losses"]],
		"Gold verdient: %d   ausgegeben: %d" % [st["gold_earned"], st["spent"]],
		"Höchste Stufe: %d-Star   Level: %d" % [st["max_star"], p.level],
		"Stärkste Einheit: %s" % best,
	]
	for l in lines:
		v.add_child(UiKit.label(l, 14, Color(0.85, 0.88, 0.95)))
	_button(v, "Neues Spiel", Color(0.28, 0.5, 0.36), func(): restart_pressed.emit())