extends Control

const Brand := preload("res://scripts/ui/medmind_style.gd")

signal logout_requested

var panel: PanelContainer
var title_label: Label
var message_label: Label
var error_label: Label
var stay_button: Button
var logout_button: Button


func _ready() -> void:
	visible = false
	top_level = true
	mouse_filter = Control.MOUSE_FILTER_STOP
	set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	_build_ui()
	AuthState.session_warning.connect(_show_warning)
	AuthState.session_countdown_changed.connect(_update_countdown)
	AuthState.session_refresh_started.connect(_refresh_started)
	AuthState.session_refreshed.connect(_refresh_succeeded)
	AuthState.session_refresh_failed.connect(_refresh_failed)
	UIThemeService.theme_changed.connect(func(_dark: bool): _apply_theme())
	resized.connect(_refresh_size)
	_refresh_size()
	_apply_theme()


func _build_ui() -> void:
	var dim := ColorRect.new()
	dim.color = Color(0, 0, 0, 0.74)
	dim.mouse_filter = Control.MOUSE_FILTER_STOP
	dim.set_anchors_preset(Control.PRESET_FULL_RECT)
	add_child(dim)

	var center := CenterContainer.new()
	center.set_anchors_preset(Control.PRESET_FULL_RECT)
	add_child(center)

	panel = PanelContainer.new()
	panel.custom_minimum_size = Vector2(520, 280)
	center.add_child(panel)

	var content := VBoxContainer.new()
	content.add_theme_constant_override("separation", 16)
	panel.add_child(content)

	title_label = Label.new()
	title_label.text = "Stay logged in?"
	title_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	title_label.add_theme_font_size_override("font_size", 28)
	content.add_child(title_label)

	message_label = Label.new()
	message_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	message_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	message_label.add_theme_font_size_override("font_size", 17)
	content.add_child(message_label)

	error_label = Label.new()
	error_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	error_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	error_label.add_theme_font_size_override("font_size", 14)
	content.add_child(error_label)

	var actions := HBoxContainer.new()
	actions.add_theme_constant_override("separation", 12)
	content.add_child(actions)

	logout_button = Button.new()
	logout_button.text = "Log out"
	logout_button.custom_minimum_size = Vector2(150, 48)
	logout_button.pressed.connect(_request_logout)
	actions.add_child(logout_button)

	stay_button = Button.new()
	stay_button.text = "Stay logged in"
	stay_button.custom_minimum_size = Vector2(0, 48)
	stay_button.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	stay_button.pressed.connect(AuthState.request_session_refresh)
	actions.add_child(stay_button)


func _show_warning(seconds_remaining: int) -> void:
	error_label.text = ""
	stay_button.disabled = false
	logout_button.disabled = false
	stay_button.text = "Stay logged in"
	visible = true
	_update_countdown(seconds_remaining)
	move_to_front()
	BlockSessionService.pause_current_question_timer()


func _update_countdown(seconds_remaining: int) -> void:
	if not visible:
		return
	var minutes := floori(float(seconds_remaining) / 60.0)
	var seconds := seconds_remaining % 60
	message_label.text = "Your session expires in %02d:%02d. Renew it to continue studying." % [minutes, seconds]


func _refresh_started() -> void:
	if not visible:
		return
	stay_button.disabled = true
	logout_button.disabled = true
	stay_button.text = "Renewing..."
	error_label.text = ""


func _refresh_succeeded() -> void:
	_hide_dialog()


func _refresh_failed(message: String, terminal: bool) -> void:
	visible = true
	move_to_front()
	error_label.text = message
	stay_button.text = "Stay logged in"
	stay_button.disabled = terminal
	logout_button.disabled = false


func _request_logout() -> void:
	logout_requested.emit()


func _hide_dialog() -> void:
	visible = false
	error_label.text = ""
	stay_button.text = "Stay logged in"
	stay_button.disabled = false
	logout_button.disabled = false
	BlockSessionService.resume_current_question_timer()


func dismiss_for_logout() -> void:
	if visible:
		_hide_dialog()


func _unhandled_input(event: InputEvent) -> void:
	if visible and event.is_action_pressed("ui_cancel"):
		get_viewport().set_input_as_handled()


func _refresh_size() -> void:
	if panel == null:
		return
	panel.custom_minimum_size = Vector2(
		minf(520.0, maxf(288.0, size.x - 32.0)),
		minf(280.0, maxf(250.0, size.y - 32.0)))


func _apply_theme() -> void:
	if panel == null:
		return
	var dark := UIThemeService.is_dark_mode()
	var panel_style := Brand.panel_box(dark)
	panel_style.bg_color.a = 1.0
	panel_style.content_margin_left = 32
	panel_style.content_margin_right = 32
	panel_style.content_margin_top = 30
	panel_style.content_margin_bottom = 30
	panel.add_theme_stylebox_override("panel", panel_style)
	for label in [title_label, message_label]:
		label.add_theme_color_override("font_color", Brand.text_color(dark))
	error_label.add_theme_color_override("font_color", Color("fb7185") if dark else Color("be123c"))
	stay_button.add_theme_stylebox_override("normal", Brand.gradient_button_box())
	stay_button.add_theme_stylebox_override("hover", Brand.gradient_button_box())
	stay_button.add_theme_stylebox_override("pressed", Brand.gradient_button_box())
	stay_button.add_theme_color_override("font_color", Color.WHITE)
	stay_button.add_theme_color_override("font_hover_color", Color.WHITE)
	logout_button.add_theme_stylebox_override("normal", Brand.secondary_button_box(dark))
	logout_button.add_theme_stylebox_override("hover", Brand.secondary_button_box(dark, true))
	logout_button.add_theme_stylebox_override("pressed", Brand.secondary_button_box(dark, true))
	logout_button.add_theme_color_override("font_color", Brand.text_color(dark))
	logout_button.add_theme_color_override("font_hover_color", Brand.text_color(dark))