extends SceneTree

# Flashcards previously had no coverage for theme switching or narrow-viewport layout: the
# library screen's `_refresh_status()` and the study screen's `refresh_theme_controls()` were
# both no-op stubs, and neither screen reacted to its own resize. This drives both screens
# through a dark/light toggle and a phone-width resize with no network calls (mirrors
# flashcard_study_render_test.gd: content is injected directly rather than fetched).

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

var failures := 0


func _initialize() -> void:
	call_deferred("_run")


func _run() -> void:
	var host := Control.new()
	host.size = Vector2(1280, 800)
	root.add_child(host)

	var theme_service = root.get_node("UIThemeService")
	var prior_dark: bool = theme_service.is_dark_mode()

	var Hub := load("res://scripts/ui/flashcards_hub.gd")
	var hub = Hub.new()
	hub.size = host.size
	host.add_child(hub)
	await process_frame

	hub.notes = [{"id": "note-1", "type": "basic", "prompt": "2 + 2", "answer": "4", "tags": []}]

	theme_service.set_dark_mode(true)
	hub._render_notes()
	await process_frame
	var dark_card := hub.list_container.get_child(0) as PanelContainer
	var dark_box := dark_card.get_theme_stylebox("panel") as StyleBoxFlat
	_assert(dark_box.bg_color.is_equal_approx(Brand.content_card_box(true, false, Brand.ROYAL_BLUE).bg_color),
		"flashcard note cards should use the dark surface while dark mode is active")

	theme_service.set_dark_mode(false)
	await process_frame
	var light_card := hub.list_container.get_child(0) as PanelContainer
	var light_box := light_card.get_theme_stylebox("panel") as StyleBoxFlat
	_assert(light_box.bg_color.is_equal_approx(Brand.content_card_box(false, false, Brand.ROYAL_BLUE).bg_color),
		"toggling the app theme should rebuild flashcard note cards with the light surface (the library screen's theme_changed handler was previously a no-op)")
	var light_menu_box := hub.export_menu.get_theme_stylebox("panel") as StyleBoxFlat
	_assert(light_menu_box.bg_color.is_equal_approx(Brand.panel_box(false).bg_color),
		"the export menu panel should also restyle to the light surface after a theme toggle")

	theme_service.set_dark_mode(prior_dark)

	hub.size = Vector2(360, 800)
	hub._update_responsive_layout()
	await process_frame
	_assert(hub.compact_layout, "the flashcards library should detect a phone-width viewport")
	var compact_card := hub.list_container.get_child(0) as PanelContainer
	var compact_row := compact_card.get_child(0) as BoxContainer
	_assert(compact_row.vertical, "phone-width flashcard rows should stack their content above the edit/archive actions instead of clipping")
	_assert(compact_card.get_combined_minimum_size().x <= hub.size.x,
		"a phone-width flashcard row should fit inside the viewport (minimum %.1f px)" % compact_card.get_combined_minimum_size().x)

	hub.size = Vector2(1280, 800)
	hub._update_responsive_layout()
	await process_frame
	_assert(not hub.compact_layout, "a wide viewport should restore the flashcards library's desktop row layout")
	var wide_row := (hub.list_container.get_child(0) as PanelContainer).get_child(0) as BoxContainer
	_assert(not wide_row.vertical, "a wide viewport should lay flashcard row content out horizontally again")

	hub.free()

	var Study := load("res://scripts/ui/flashcards_study.gd")
	var study = Study.new()
	study._build()

	theme_service.set_dark_mode(true)
	study.refresh_theme_controls()
	var dark_study_box := study.card_panel.get_theme_stylebox("panel") as StyleBoxFlat
	_assert(dark_study_box.bg_color.is_equal_approx(Brand.content_card_box(true, true, Brand.ROYAL_BLUE).bg_color),
		"the study card should use the dark active-card surface while dark mode is active")

	theme_service.set_dark_mode(false)
	study.refresh_theme_controls()
	var light_study_box := study.card_panel.get_theme_stylebox("panel") as StyleBoxFlat
	_assert(light_study_box.bg_color.is_equal_approx(Brand.content_card_box(false, true, Brand.ROYAL_BLUE).bg_color),
		"toggling the app theme should restyle the study card to the light surface (refresh_theme_controls was previously a no-op)")
	_assert(light_study_box.border_color.is_equal_approx(Brand.ROYAL_BLUE),
		"the study card should keep its accent border after a theme refresh")

	theme_service.set_dark_mode(prior_dark)

	study.size = Vector2(360, 720)
	study._update_responsive_layout()
	_assert(study.compact_layout, "the study screen should detect a phone-width viewport")
	_assert(study.card_panel.custom_minimum_size.x <= study.size.x,
		"the study card should shrink to fit a phone-width viewport instead of overflowing (minimum %.1f px on a %.1f px viewport)" % [study.card_panel.custom_minimum_size.x, study.size.x])

	study.size = Vector2(1280, 720)
	study._update_responsive_layout()
	_assert(not study.compact_layout, "a wide viewport should restore the study screen's desktop layout")
	_assert(is_equal_approx(study.card_panel.custom_minimum_size.x, 720.0),
		"a wide viewport should restore the study card's full 720px width")

	study.free()
	host.queue_free()
	await process_frame
	quit(1 if failures > 0 else 0)


func _assert(condition: bool, message: String) -> void:
	if condition:
		return
	failures += 1
	push_error(message)