extends SceneTree

# Headless test: run with
#   godot --headless -s res://tests/test_menu_polish.gd
# Forgejo #111, #112, #119 and #120 - four panels that were hard to read,
# each for its own reason. Grouped because they are all "what does this
# panel actually show", and because each alone is a handful of assertions.
#
# Covers:
#   A. #111 - the craft menu names no resources: prices are glyphs, and
#      every vessel gets a caption that does not overlap its neighbour
#   B. #111 - and a price strip really carries the vessel's cost
#   D. #143 - a hangar caption fits the box it was given and cannot draw
#      outside it, so it never lands on the icon of the row below
#   C. #120 - the hangar's captions have room for two lines, and there is a
#      rule between what is parked and what is flying
#   D. #112 - every skill node has a mark, and a node that unlocks a
#      building uses that building's own icon
#   E. #119 - the command centre draws the vessels actually in the fleet,
#      not one placeholder repeated

var game_state: Node
var scene: Node
var controller: Node
var stage: int = 0
var elapsed: float = 0.0


func _initialize() -> void:
	# GameState is an autoload: a bare GameState.<instance member> does not
	# compile in a SceneTree script, so the node is fetched by name instead.
	game_state = root.get_node("GameState")
	game_state.buildings.clear()
	game_state.extractors.clear()
	game_state.reset_progression()
	game_state.reset_waves()
	game_state.reset_formation()
	game_state.intro_active = false
	game_state.rocks = 5000
	scene = load("res://world/Main.tscn").instantiate()
	root.add_child(scene)
	current_scene = scene
	controller = scene.get_node("BuildController")


func _fail(message: String) -> bool:
	print("TEST_MENU_POLISH: FAIL (%s)" % message)
	quit(1)
	return true


func _process(delta: float) -> bool:
	elapsed += delta
	match stage:
		0:
			if elapsed < 0.4:
				return false
			scene.get_node("AsteroidField").set_process(false)
			scene.get_node("EnemySpawner").set_process(false)

			# --- A. the craft menu spells no resource out -------------
			controller.craft_building_id = 1
			controller._refresh_craft_status()
			# The caption is the vessel's NAME and nothing else. Checked as an
			# exact match rather than by hunting for resource words in it: a
			# Gas Bomber is named after a resource and always will be, and
			# what #111 removed was the PRICE spelled out underneath.
			var fleet_defs: Array = VesselDefinitions.fleet()
			for i in range(mini(controller.craft_vessel_labels.size(), fleet_defs.size())):
				var caption: String = String(controller.craft_vessel_labels[i].text)
				var expected: String = String(fleet_defs[i].display_name)
				if caption != expected:
					return _fail("a craft caption reads \"%s\", expected just \"%s\"" \
						% [caption, expected])
			# Captions must not sit on top of one another, which is what
			# made the old single row unreadable.
			for i in range(controller.craft_vessel_labels.size()):
				for j in range(i + 1, controller.craft_vessel_labels.size()):
					var a: Control = controller.craft_vessel_labels[i]
					var b: Control = controller.craft_vessel_labels[j]
					if Rect2(a.position, a.size).intersects(Rect2(b.position, b.size)):
						return _fail("craft captions %d and %d overlap" % [i, j])
			print("craft captions: %d, one line each, none overlapping" \
				% controller.craft_vessel_labels.size())

			# --- B. and the price is really there ---------------------
			if controller.craft_price_strips.size() != controller.craft_vessel_buttons.size():
				return _fail("%d price strips for %d vessels" \
					% [controller.craft_price_strips.size(),
						controller.craft_vessel_buttons.size()])
			var priced: int = 0
			for i in range(controller.craft_price_strips.size()):
				var definition: Resource = VesselDefinitions.fleet()[i]
				var costs: Dictionary = game_state.product_costs(definition.definition_id)
				var strip: Control = controller.craft_price_strips[i]
				if costs.is_empty():
					continue
				if strip.is_free():
					return _fail("%s costs %s and its strip is empty" \
						% [definition.definition_id, str(costs)])
				priced += 1
			if priced == 0:
				return _fail("no vessel showed a price at all")
			print("%d vessels show their price as glyphs" % priced)

			# --- C. the hangar ---------------------------------------
			controller._layout_hangar()
			if controller.hangar_divider_y <= 0.0:
				return _fail("the hangar laid out with no divider between its halves")
			var available_bottom: float = 0.0
			var fleet_top: float = 1.0e9
			for label in controller.hangar_available_labels:
				available_bottom = maxf(available_bottom, label.position.y + label.size.y)
			for slot in controller.hangar_fleet_slots:
				fleet_top = minf(fleet_top, slot.position.y)
			if not (controller.hangar_divider_y > available_bottom - 40.0
					and controller.hangar_divider_y < fleet_top):
				return _fail("the divider at %.0f is not between the two grids (%.0f / %.0f)" \
					% [controller.hangar_divider_y, available_bottom, fleet_top])
			# Two lines of caption. The font is 24-ish, so anything under
			# about 44 cannot show a second line at all.
			var caption_height: float = controller.hangar_available_labels[0].size.y
			if caption_height < 44.0:
				return _fail("hangar captions are %.0fpx tall - a two-word name is clipped" \
					% caption_height)
			print("hangar: %.0fpx captions, divider at %.0f between %.0f and %.0f" \
				% [caption_height, controller.hangar_divider_y, available_bottom, fleet_top])

			# --- D. #143 - and the caption stays in its box --------------
			# The caption is two lines before autowrap and three after it in
			# a narrow column, at a size fixed in the scene - so the third
			# line was drawn over the icon of the row below. It is fitted to
			# the box now, and the box clips, so nothing can reach the next
			# row however the vessel names grow.
			controller._refresh_hangar()
			for pair in [[controller.hangar_available_labels, controller.hangar_available_slots],
					[controller.hangar_fleet_labels, controller.hangar_fleet_slots]]:
				for i in range(pair[0].size()):
					var caption: Label = pair[0][i]
					if not caption.clip_text:
						return _fail("hangar caption %d can draw outside its box" % i)
					var font: Font = caption.get_theme_font("font")
					var size_px: int = caption.get_theme_font_size("font_size")
					var needed: float = font.get_multiline_string_size(caption.text,
						HORIZONTAL_ALIGNMENT_CENTER, caption.size.x, size_px).y
					if needed > caption.size.y + 0.5:
						return _fail("caption \"%s\" needs %.0fpx at size %d and has %.0f" \
							% [caption.text.replace("\n", " / "), needed, size_px, caption.size.y])
					# And the box itself must not reach the row below it.
					for slot in pair[1]:
						var below: Rect2 = Rect2(slot.position, slot.size)
						if below.position.y > caption.position.y \
								and Rect2(caption.position, caption.size).intersects(below):
							return _fail("caption \"%s\" runs into the icon below it" \
								% caption.text.replace("\n", " / "))
			var probe: Label = controller.hangar_available_labels[0]
			print("captions fitted to %dpx and clipped; \"%s\" fits its %.0fpx box" \
				% [probe.get_theme_font_size("font_size"),
					probe.text.replace("\n", " / "), probe.size.y])

			# --- D. every skill node has a mark -----------------------
			var tree_view: Control = scene.get_node("UI/SkillMenu/Tree")
			var marked: int = 0
			for node in GameState.SKILL_TREE:
				var icon: int = game_state.skill_node_icon(node)
				if icon < 0:
					return _fail("skill node \"%s\" has no icon" % node.id)
				marked += 1
				var unlocks: String = String(node.get("unlocks", ""))
				if unlocks == "":
					continue
				var definition: Resource = game_state.building_definition(unlocks)
				if definition != null and icon != int(definition.menu_icon):
					return _fail("\"%s\" unlocks the %s but draws a different icon" \
						% [node.id, unlocks])
			if tree_view._glyphs.size() != marked:
				return _fail("%d nodes have icons but the tree built %d glyphs" \
					% [marked, tree_view._glyphs.size()])
			print("%d skill nodes, every one marked, unlocks matching their building" % marked)

			# --- E. the formation shows the real fleet ----------------
			scene.get_node("Fleet").spawn_ships(2, Vector2.ZERO, PackedStringArray([
				GameState.VESSEL_INTERCEPTOR, GameState.VESSEL_SHIELD]))
			elapsed = 0.0
			stage = 1
			return false
		1:
			if elapsed < 0.2:
				return false
			var editor: Control = scene.get_node("UI/FormationMenu/Editor")
			var crewed: PackedStringArray = game_state.fleet_vessel_types
			if crewed.size() != 2:
				return _fail("the fleet mirror holds %d types, expected 2" % crewed.size())
			var interceptor: Resource = game_state.vessel_definition(GameState.VESSEL_INTERCEPTOR)
			var shield: Resource = game_state.vessel_definition(GameState.VESSEL_SHIELD)
			if interceptor.hull_points == shield.hull_points:
				return _fail("the two vessels share a hull, so this case proves nothing")
			if not editor.has_method("_draw_vessel_slot"):
				return _fail("the editor has no per-vessel drawing at all")
			# The panel draws from the mirror, so the mirror having the right
			# types in the right order IS what makes the markers differ.
			if String(crewed[0]) != GameState.VESSEL_INTERCEPTOR \
					or String(crewed[1]) != GameState.VESSEL_SHIELD:
				return _fail("the fleet mirror is %s, not the order they were crewed in" \
					% str(crewed))
			print("formation draws a %s and a %s, in the slots they fly in" \
				% [interceptor.display_name, shield.display_name])

			print("TEST_MENU_POLISH: PASS")
			quit(0)
			return true
	return false