extends Node
const GAME := preload("res://scenes/game/game.tscn")

func weapon(damage: float, interval: float = 0.5, missile: bool = false) -> ItemInstance:
	var item := ItemInstance.new()
	item.definition = preload("res://resources/items/plasma_cannon.tres").duplicate()
	item.definition.fire_interval = interval
	if missile:
		item.definition.weapon_kind = ItemDefinition.WeaponKind.MISSILE
	item.damage_min = damage
	item.damage_max = damage
	return item

func modifier(item: ItemInstance, key: String, value: float) -> void:
	var addon := ItemStatModifier.new()
	addon.stat_key = key
	addon.value = value
	item.additional_modifiers.append(addon)

func delta_for(comparison: Dictionary, key: String) -> float:
	for row in comparison["stats"]:
		if row["key"] == key:
			return row["delta"]
	return 0.0

func _ready() -> void:
	GameState.start_new_run()
	var game := GAME.instantiate()
	add_child(game)
	game.set_physics_process(false)
	var ship := game.get_node("PlayerShip")
	ship.set_physics_process(false)
	ship.get_node("WeaponController").set_physics_process(false)
	for enemy in get_tree().get_nodes_in_group("enemies"):
		enemy.set_physics_process(false)
	var inventory: ShipInventory = ship.get_node("ShipInventory")
	var old_first := weapon(10)
	var old_second := weapon(20)
	inventory.weapon_slots.assign([old_first, old_second, null])
	var candidate := weapon(12, 0.4)
	for index in 3:
		assert(is_equal_approx(inventory.get_weapon_comparison(candidate, index)["dps_delta"], [10.0, -10.0, 30.0][index]))
	modifier(old_first, "credits_percent", 4)
	modifier(old_second, "credits_percent", 9)
	modifier(candidate, "credits_percent", 6)
	for index in 3:
		assert(is_equal_approx(delta_for(inventory.get_weapon_comparison(candidate, index), "credits_percent"), [2.0, -3.0, 6.0][index]))
	modifier(old_first, "missile_cooldown_reduction", 0.5)
	var rocket := weapon(40, 0.1, true)
	modifier(rocket, "missile_cooldown_reduction", 2)
	assert(is_equal_approx(inventory.get_weapon_comparison(rocket, 0)["dps_delta"], 40.0 / 3.0 - 20.0))
	assert(is_equal_approx(inventory.get_weapon_comparison(rocket, 2)["dps_delta"], 40.0 / 2.5))
	modifier(rocket, "missile_cooldown_reduction", 100)
	assert(is_equal_approx(inventory.get_weapon_comparison(rocket, 2)["dps_delta"], 40.0))
	modifier(old_first, "damage_percent", 5)
	modifier(candidate, "damage_percent", 20)
	modifier(candidate, "critical_chance_percent", 10)
	assert(is_equal_approx(inventory.get_weapon_comparison(candidate, 0)["dps_delta"], 39.6 - 21.0))
	assert(is_equal_approx(inventory.get_weapon_comparison(candidate, 1)["dps_delta"], 41.25 - 42.0))
	modifier(candidate, "damage", 3)
	assert(is_equal_approx(delta_for(inventory.get_weapon_comparison(candidate, 0), "flat_damage_addon"), 3.0))
	assert(is_equal_approx(inventory.get_weapon_comparison(candidate, 0)["dps_delta"], 49.5 - 21.0))
	assert(inventory.weapon_slots[0] == old_first and inventory.weapon_slots[1] == old_second and inventory.weapon_slots[2] == null)
	assert(inventory.missile_ammunition == ShipInventory.STARTING_MISSILE_AMMUNITION)
	assert(inventory.add_item(candidate))
	inventory._recalculate_ship_stats()
	inventory.inventory_changed.emit()
	var hud := game.get_node("HUD/HUDRoot")
	var slot := preload("res://scenes/ui/inventory_slot_view.tscn").instantiate()
	slot.slot_index = inventory.cargo.find(candidate)
	hud.add_child(slot)
	slot.hide()
	var tooltip: PanelContainer = slot._make_custom_tooltip(candidate.get_tooltip_text())
	hud.add_child(tooltip)
	tooltip.position = Vector2(340, 100)
	assert(tooltip.get_child(0).get_child(2).name == "WeaponComparison")
	await get_tree().process_frame
	await get_tree().process_frame
	assert(tooltip.size.x < 1100 and tooltip.size.y < 620)
	print("WEAPON_COMPARISON_TEST: PASS three slot DPS, empty slot, affix gains/losses, projected global bonuses, crits, missile cooldown and clamp, no inventory mutation, compact table")