class_name LuneEventFeed
extends VBoxContainer
## Short event list: tower falls, champions, boss, critical Ancients, round results. At most
## five entries, newest on top; each fades after a while. A click on an entry with a place
## moves the camera there. It never lists every kill.

signal focus_requested(target: Dictionary)

const LIMIT: int = 5
const LIFETIME: float = 14.0
const LEVEL_COLORS: Dictionary = {"info": LuneUiTheme.INFO, "good": LuneUiTheme.GOOD, "warn": LuneUiTheme.WARN, "danger": LuneUiTheme.DANGER}

var entries: Array[Dictionary] = []
var _clock: float = 0.0

func _init() -> void:
	add_theme_constant_override("separation", 3)
	mouse_filter = Control.MOUSE_FILTER_IGNORE

## level: info, good, warn, danger. target: {} or {"lane": …} / {"point": Vector2} / {"camera": name}.
func push(text_value: String, level: String = "info", glyph: String = "", target: Dictionary = {}) -> void:
	for entry: Dictionary in entries:
		if entry.text == text_value and _clock - float(entry.born) < 4.0:
			return
	var button := Button.new()
	button.theme_type_variation = "HudRow"
	button.focus_mode = Control.FOCUS_NONE
	button.mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND if not target.is_empty() else Control.CURSOR_ARROW
	button.custom_minimum_size = Vector2(0, 30)
	var row := HBoxContainer.new()
	row.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	row.offset_left = 8
	row.offset_right = -8
	row.add_theme_constant_override("separation", 7)
	row.mouse_filter = Control.MOUSE_FILTER_IGNORE
	button.add_child(row)
	var tint: Color = LEVEL_COLORS.get(level, LuneUiTheme.INFO)
	LuneGlyph.make(glyph if not glyph.is_empty() else "star", tint, 15.0, row)
	var label := LuneUiTheme.label(text_value, "HudText", row)
	label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	label.text_overrun_behavior = TextServer.OVERRUN_TRIM_ELLIPSIS
	label.clip_text = true
	label.add_theme_color_override("font_color", tint.lerp(LuneUiTheme.TEXT, .45))
	button.pressed.connect(func() -> void:
		if not target.is_empty():
			focus_requested.emit(target))
	LuneTooltip.attach(button, func() -> Dictionary: return {"title": text_value, "note": "Klick: Kamera dorthin" if not target.is_empty() else ""})
	add_child(button)
	move_child(button, 0)
	entries.push_front({"text": text_value, "level": level, "born": _clock, "node": button})
	while entries.size() > LIMIT:
		var old: Dictionary = entries.pop_back()
		(old.node as Node).queue_free()
	visible = true

func clear_all() -> void:
	for entry: Dictionary in entries:
		(entry.node as Node).queue_free()
	entries.clear()

func _process(delta: float) -> void:
	_clock += delta
	for index: int in range(entries.size() - 1, -1, -1):
		var entry: Dictionary = entries[index]
		var age: float = _clock - float(entry.born)
		var node: Control = entry.node
		if age > LIFETIME:
			node.queue_free()
			entries.remove_at(index)
		elif age > LIFETIME - 2.0:
			node.modulate.a = clampf((LIFETIME - age) / 2.0, 0.0, 1.0)
	visible = not entries.is_empty()