class_name RadioPanel
extends CanvasLayer
## Radio report form (PLAN.md Level 4 assist / Level 5 emergency).
## Emergency calls use hold-to-activate (press and hold 1.6s) to prevent
## accidental activation.

signal submitted(report: Dictionary, emergency: bool)
signal cancelled()

const Rules := preload("res://src/core/rules.gd")
const Strings := preload("res://src/core/strings.gd")
const UiArt := preload("res://src/game/ui/art.gd")
const UiStyles := preload("res://src/game/ui/ui_styles.gd")
const UiFocus := preload("res://src/game/ui/ui_focus.gd")

var panel: PanelContainer
var npc_name_label: Label
var location_edit: LineEdit
var desc_edit: LineEdit
var weapons_check: CheckBox
var danger_option: OptionButton
var action_button: Button
var cancel_button: Button
var _focus_controls: Array[Control] = []
var hold_hint: Label
var status_label: Label

var _emergency := false
var _npc_id := ""
var _holding := false
var _hold_time := 0.0
const HOLD_NEEDED := 1.6
var _truth := {"weapons_seen": false, "danger_level": 0}

var _art := UiArt.new()
var _art_layer: Control = null

func _init() -> void:
	name = "RadioPanel"
	layer = 20
	_art_layer = Control.new()
	_art_layer.name = "RadioArt"
	_art_layer.set_anchors_preset(Control.PRESET_FULL_RECT)
	_art_layer.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(_art_layer)
	_paint_backdrop()

	var center := CenterContainer.new()
	center.set_anchors_preset(Control.PRESET_FULL_RECT)
	center.mouse_filter = Control.MOUSE_FILTER_IGNORE
	add_child(center)
	panel = PanelContainer.new()
	panel.custom_minimum_size = Vector2(560, 0)
	var panel_style := StyleBoxFlat.new()
	panel_style.bg_color = Color(0, 0, 0, 0)
	panel_style.content_margin_left = 28
	panel_style.content_margin_right = 28
	panel_style.content_margin_top = 22
	panel_style.content_margin_bottom = 22
	panel.add_theme_stylebox_override("panel", panel_style)
	center.add_child(panel)

	var vbox := VBoxContainer.new()
	panel.add_child(vbox)
	vbox.add_theme_constant_override("separation", 8)

	var title := Label.new()
	title.name = "RadioTitle"
	title.add_theme_font_size_override("font_size", 18)
	vbox.add_child(title)
	npc_name_label = Label.new()
	vbox.add_child(npc_name_label)

	location_edit = LineEdit.new()
	location_edit.placeholder_text = Strings.lookup("ui.radio_location_placeholder")
	location_edit.text = Strings.lookup("ui.radio_location_default")
	vbox.add_child(location_edit)

	desc_edit = LineEdit.new()
	desc_edit.placeholder_text = Strings.lookup("ui.radio_description_placeholder")
	vbox.add_child(desc_edit)

	weapons_check = CheckBox.new()
	weapons_check.text = Strings.lookup("ui.radio_weapon")
	vbox.add_child(weapons_check)

	var danger_row := HBoxContainer.new()
	vbox.add_child(danger_row)
	var danger_label := Label.new()
	danger_label.text = Strings.lookup("ui.radio_danger")
	danger_row.add_child(danger_label)
	danger_option = OptionButton.new()
	for i in 4:
		danger_option.add_item("level %d — %s" % [i, _danger_name(i)], i)
	danger_option.select(1)
	danger_row.add_child(danger_option)

	hold_hint = Label.new()
	hold_hint.text = ""
	hold_hint.modulate = Color(1, 0.85, 0.55)
	vbox.add_child(hold_hint)

	status_label = Label.new()
	status_label.text = ""
	vbox.add_child(status_label)

	var buttons := HBoxContainer.new()
	vbox.add_child(buttons)
	action_button = Button.new()
	action_button.text = Strings.lookup("ui.radio_send_assist")
	action_button.button_down.connect(func(): _start_hold())
	action_button.button_up.connect(func(): _stop_hold(false))
	action_button.pressed.connect(_on_action_pressed)
	UiStyles.apply_button(action_button, 16)
	buttons.add_child(action_button)
	cancel_button = Button.new()
	cancel_button.text = Strings.lookup("ui.radio_cancel")
	cancel_button.pressed.connect(func(): cancelled.emit())
	UiStyles.apply_button(cancel_button, 16)
	buttons.add_child(cancel_button)
	_focus_controls = [location_edit, desc_edit, weapons_check, danger_option,
		action_button, cancel_button]
	UiFocus.link(_focus_controls, false)

var _title_label: Label

func _paint_backdrop() -> void:
	if _art_layer == null:
		return
	for child in _art_layer.get_children():
		_art_layer.remove_child(child)
		child.queue_free()
	var art_name := "emergency_radio" if _emergency else "radio_report"
	var rect := Rect2(0.120, 0.058, 0.697, 0.882) if _emergency else Rect2(0.176, 0.033, 0.585, 0.923)
	if not _art.add_screen_backdrop(_art_layer, art_name, rect):
		var dim := ColorRect.new()
		dim.color = Color(0, 0, 0, 0.55)
		dim.set_anchors_preset(Control.PRESET_FULL_RECT)
		_art_layer.add_child(dim)

func open(controller: Object, emergency: bool, truth: Dictionary) -> void:
	_emergency = emergency
	_paint_backdrop()
	_truth = truth
	_npc_id = controller.npc_id if controller else ""
	npc_name_label.text = Strings.fmt("ui.radio_target", [controller.profile.display_name if controller else "?"])
	var title: Label = panel.find_child("RadioTitle", true, false)
	title.text = Strings.lookup("ui.radio_title_emergency") if emergency else Strings.lookup("ui.radio_title_assist")
	weapons_check.button_pressed = truth.get("weapons_seen", false)
	danger_option.select(truth.get("danger_level", 1))
	hold_hint.text = Strings.fmt("ui.radio_hold_hint", [HOLD_NEEDED]) if emergency else ""
	status_label.text = ""
	action_button.text = Strings.lookup("ui.radio_send_emergency") if emergency else Strings.lookup("ui.radio_send_assist")
	_holding = false
	_hold_time = 0.0
	visible = true
	UiFocus.link(_focus_controls, false)
	action_button.grab_focus()

## Non-emergency requests are a normal click. Emergency calls require the
## press-and-hold path, so the click release must not submit early.
func _on_action_pressed() -> void:
	if not _emergency:
		_submit()

func _start_hold() -> void:
	_holding = _emergency
	_hold_time = 0.0

func _stop_hold(cancelled_early: bool) -> void:
	if _holding:
		_holding = false
		if not cancelled_early and _hold_time >= HOLD_NEEDED:
			_submit()
		else:
			status_label.text = Strings.lookup("ui.radio_cancelled")

func _process(delta: float) -> void:
	if not visible:
		return
	if _holding:
		_hold_time += delta
		status_label.text = Strings.fmt("ui.radio_holding", [minf(1.0, _hold_time / HOLD_NEEDED) * 100.0])
		if _hold_time >= HOLD_NEEDED:
			var was := _holding
			_holding = false
			if was:
				_submit()

func _submit() -> void:
	if not visible:
		return
	var report := {
		"npc_id": _npc_id,
		"location": location_edit.text,
		"description": desc_edit.text,
		"behavior": desc_edit.text,
		"weapons_seen": weapons_check.button_pressed,
		"danger_level": danger_option.get_selected_id(),
	}
	visible = false
	submitted.emit(report, _emergency)

func _danger_name(level: int) -> String:
	match level:
		0: return "none"
		1: return "low"
		2: return "elevated"
		3: return "immediate threat"
		_: return "unknown"

func _unhandled_input(event: InputEvent) -> void:
	if not visible:
		return
	if event.is_action_pressed("ui_cancel"):
		cancelled.emit()
		get_viewport().set_input_as_handled()