class_name FactionChoice
extends HBoxContainer
## Selectable Bund cards with the OptionButton surface used by tools and tests.
## Index order follows DataCatalog.FACTIONS. Selected cards carry a text badge,
## a double frame and full-colour emblems; the others show a quiet "Wählen" hint.

signal item_selected(index: int)

# Play-style summaries are taken from DataCatalog ability texts; no invented mechanics.
const PROFILES: Dictionary = {
	"glutpakt": {"emblem": "res://assets/ui/emblems/glutpakt.svg", "motto": "Schutz, Brand und Flächenschaden",
		"facts": ["Basaltschilde senken erlittenen Schaden, vor allem zu Kampfbeginn", "Glutklingen setzen bei jedem 3. Treffer Brand",
			"Aschenwerfer treffen mehrere Ziele, Herdhüter stärken Verbündete"]},
	"wurzelbund": {"emblem": "res://assets/ui/emblems/wurzelbund.svg", "motto": "Heilung, Ranken und Keimbrand",
		"facts": ["Holzpanzer heilen sich, sobald sie verwundet sind", "Ranken verlangsamen Gegner",
			"Heiler versorgen Verbündete in 4 bis 4,5 m, Samenschützen setzen Keimbrand"]},
}

var selected: int = -1
var cards: Array[Button] = []
var _badges: Array[Control] = []
var _hints: Array[Label] = []
var _emblems: Array[TextureRect] = []
var _group := ButtonGroup.new()

func _ready() -> void:
	add_theme_constant_override("separation", 16)
	for id: String in DataCatalog.FACTIONS:
		_make_card(id)

func _make_card(id: String) -> void:
	var profile: Dictionary = PROFILES[id]
	var card := Button.new()
	card.name = "Card_" + id
	card.theme_type_variation = "FactionCard"
	card.toggle_mode = true
	card.button_group = _group
	card.focus_mode = Control.FOCUS_ALL
	card.mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND
	card.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	card.custom_minimum_size = Vector2(220, 236)
	card.tooltip_text = "%s wählen · Startformation %d Gold" % [DataCatalog.FACTION_NAMES[id], starter_cost(id)]
	var content := VBoxContainer.new()
	content.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	content.offset_left = 16
	content.offset_right = -16
	content.offset_top = 18
	content.offset_bottom = -14
	content.add_theme_constant_override("separation", 6)
	card.add_child(content)
	var emblem := TextureRect.new()
	emblem.texture = load(profile.emblem)
	emblem.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	emblem.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	emblem.custom_minimum_size = Vector2(84, 84)
	emblem.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(emblem)
	var title := Label.new()
	title.text = DataCatalog.FACTION_NAMES[id]
	title.theme_type_variation = "CardTitleLabel"
	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	title.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(title)
	var motto := Label.new()
	motto.text = profile.motto
	motto.theme_type_variation = "LoreLabel"
	motto.add_theme_font_size_override("font_size", 18)
	motto.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	motto.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	motto.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(motto)
	var spacer := Control.new()
	spacer.size_flags_vertical = Control.SIZE_EXPAND_FILL
	spacer.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(spacer)
	var foot := CenterContainer.new()
	foot.mouse_filter = Control.MOUSE_FILTER_IGNORE
	content.add_child(foot)
	var states := HBoxContainer.new()
	states.mouse_filter = Control.MOUSE_FILTER_IGNORE
	foot.add_child(states)
	var badge := PanelContainer.new()
	badge.theme_type_variation = "BadgePanel"
	badge.mouse_filter = Control.MOUSE_FILTER_IGNORE
	var badge_row := HBoxContainer.new()
	badge_row.mouse_filter = Control.MOUSE_FILTER_IGNORE
	badge_row.add_theme_constant_override("separation", 6)
	badge.add_child(badge_row)
	var mark := TextureRect.new()
	mark.texture = preload("res://assets/ui/controls/choice_on.svg")
	mark.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
	mark.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
	mark.custom_minimum_size = Vector2(12, 12)
	mark.modulate = Color("1a120a")
	mark.mouse_filter = Control.MOUSE_FILTER_IGNORE
	badge_row.add_child(mark)
	var badge_text := Label.new()
	badge_text.text = "DEIN BUND"
	badge_text.theme_type_variation = "BadgeLabel"
	badge_text.mouse_filter = Control.MOUSE_FILTER_IGNORE
	badge_row.add_child(badge_text)
	states.add_child(badge)
	var hint := Label.new()
	hint.text = "Wählen"
	hint.theme_type_variation = "MutedLabel"
	hint.add_theme_font_size_override("font_size", 14)
	hint.mouse_filter = Control.MOUSE_FILTER_IGNORE
	states.add_child(hint)
	content.minimum_size_changed.connect(func() -> void:
		card.custom_minimum_size.y = maxf(236.0, content.get_combined_minimum_size().y + 32.0))
	var index: int = cards.size()
	card.pressed.connect(func() -> void:
		if selected != index:
			select(index)
			item_selected.emit(index))
	add_child(card)
	cards.append(card)
	_badges.append(badge)
	_hints.append(hint)
	_emblems.append(emblem)

static func starter_cost(id: String) -> int:
	var ids: Array[String] = DataCatalog.faction_ids(id)
	return int(DataCatalog.UNITS[ids[0]].cost + DataCatalog.UNITS[ids[1]].cost + DataCatalog.UNITS[ids[2]].cost)

func select(index: int) -> void:
	if index < 0 or index >= cards.size():
		return
	selected = index
	for i: int in range(cards.size()):
		var on: bool = i == index
		cards[i].set_pressed_no_signal(on)
		_badges[i].visible = on
		_hints[i].visible = not on
		_emblems[i].modulate = Color.WHITE if on else Color(.72, .70, .66)

func focus_selected() -> void:
	if selected >= 0:
		cards[selected].grab_focus()

func selected_id() -> String:
	return DataCatalog.FACTIONS[selected] if selected >= 0 else ""