extends RefCounted
const ORBS := preload("res://scripts/items/special_orbs.gd")
const LOOT := preload("res://scripts/game/distant_loot.gd")
const GENERATOR := preload("res://scripts/items/item_generator.gd")
var failures: Array[String] = []

class HitTarget extends Node2D:
	var damage_type := -1
	var damage := 0.0
	func take_piercing_weapon_hit(amount: float, _critical: bool, kind: int, _piercing: float) -> void:
		damage_type = kind
		damage = amount

func check(value: bool, message: String) -> void:
	if not value: failures.append(message)

func run(game: Node) -> Array[String]:
	var player: Node = game.player
	var inventory: ShipInventory = player.get_node("ShipInventory")
	var progress: Resource = GameState.captain.expedition
	player.is_docked = true
	for id in ORBS.IDS:
		progress.orbs[id] = 10
		check(ORBS.icon(id) != null, "Missing orb icon: " + id)
	var weapon := GENERATOR.generate_for_definition(preload("res://resources/items/plasma_cannon.tres"),1)
	var addon := ItemStatModifier.new()
	addon.stat_key = "attack_speed_percent"
	addon.value = 25.0
	addon.affix = preload("res://resources/items/affixes/attack_speed_percent.tres")
	weapon.additional_modifiers = [addon]
	inventory.weapon_slots[0] = weapon
	check(is_equal_approx(weapon.get_fire_interval(), weapon.definition.fire_interval / 1.25), "Attack speed interval")
	var cost := weapon.get_energy_cost()
	addon.value = 500.0
	check(is_equal_approx(weapon.attack_speed_multiplier(),1.25), "Attack speed capped")
	addon.value = 25.0
	check(is_equal_approx(cost, weapon.get_energy_cost()), "Attack speed does not reduce shot cost")
	for level in [1,120,1000]:
		var bounds := addon.affix.get_value_range(level)
		check(bounds.x >= 2.0 and bounds.y <= 25.0, "Bounded attack speed rolls")
	check(not addon.affix.can_roll(preload("res://resources/items/reinforced_shield.tres"),1), "Attack speed only rolls on weapons")
	var slow_dps := inventory.get_weapon_dps(0) / 1.25
	addon.value = 0.0
	check(is_equal_approx(inventory.get_weapon_dps(0),slow_dps), "DPS reflects attack speed")
	addon.value = 25.0
	var shield := GENERATOR.generate_for_definition(preload("res://resources/items/reinforced_shield.tres"),1)
	var engine := GENERATOR.generate_for_definition(preload("res://resources/items/engine_extension.tres"),1)
	shield.additional_modifiers = []
	engine.additional_modifiers = []
	inventory.module_slots[0] = shield
	inventory.module_slots[2] = engine
	check(not ORBS.accepts(weapon,"polarization") and not ORBS.accepts(shield,"atomic_engine"), "Orb category restrictions")
	check(not ORBS.accepts(engine,"electricity"), "Damage orb rejects engine")
	var detached := GENERATOR.generate_for_definition(weapon.definition,1)
	check(not ORBS.apply(progress,inventory,detached,"replication"), "Cannot replicate unowned equipment")
	player.is_docked = false
	check(not ORBS.apply(progress,inventory,weapon,"electricity"), "Orbs require docking")
	player.is_docked = true
	var original_damage := weapon.get_damage_range()
	for id in ORBS.DAMAGE_ORBS:
		check(ORBS.apply(progress,inventory,weapon,id), "Apply damage orb: " + id)
		var kind: int = {"electricity":DamageTypes.Type.ENERGY,"radiation":DamageTypes.Type.RADIATION,"kinetic":DamageTypes.Type.KINETIC}[id]
		check(weapon.get_damage_type() == kind, "Converted weapon damage type")
		check(weapon.get_damage_range() == original_damage, "Conversion preserves damage")
		check(not ORBS.apply(progress,inventory,weapon,id), "Same damage orb cannot stack")
		var target := HitTarget.new()
		game.add_child(target)
		player.get_node("WeaponController")._apply_damage(target,100,false,0,weapon.get_damage_type())
		check(target.damage_type == kind, "Laser uses converted type")
		var projectile := preload("res://scenes/game/weapon_projectile.tscn").instantiate()
		projectile.damage = 100.0
		projectile.damage_type_override = weapon.get_damage_type()
		projectile._apply_damage_once(target)
		check(target.damage_type == kind and target.damage == 100.0, "Projectile uses converted type")
		projectile.free()
		target.free()
	check(weapon.special_orbs.size() == 1, "Damage orbs replace each other")
	var normal_boost_cost: float = player.get_mini_boost_energy_cost()
	check(ORBS.apply(progress,inventory,engine,"atomic_engine"), "Atomic engine applied")
	check(is_equal_approx(player.get_mini_boost_energy_cost(),normal_boost_cost*0.5), "Atomic engine halves TAB cost")
	player.energy = 50.0
	Input.action_press("ship_mini_boost")
	player._update_mini_boost(1.0)
	Input.action_release("ship_mini_boost")
	check(is_equal_approx(player.energy,50.0-normal_boost_cost*0.5), "Actual atomic boost consumes half energy")
	check(ORBS.apply(progress,inventory,engine,"booster"), "Free booster stacks by precedence")
	check(is_zero_approx(player.get_mini_boost_energy_cost()), "Free booster remains free")
	check(ORBS.apply(progress,inventory,shield,"polarization"), "Polarization applied")
	player.is_docked = false
	player.absorption = Vector3.ZERO
	player.max_energy = 10000.0
	player.energy = 0.0
	player.max_shields = 1000.0
	player.shields = 1000.0
	for attempt in 100:
		player.take_damage(1.0)
		if player.shields < 1000.0: break
	check(is_equal_approx(player.energy,1.0), "Polarization cannot turn a tiny hit into excess energy")
	player.energy = player.max_energy - 1.0
	player.shields = 1000.0
	for attempt in 100:
		player.take_damage(1.0)
		if player.shields < 1000.0: break
	check(is_equal_approx(player.energy,player.max_energy), "Polarization respects generator capacity")
	player.shields = 0.0
	player.energy = 0.0
	player.hull = 10000.0
	player.take_damage(1.0)
	check(is_zero_approx(player.energy), "Hull-only hit gives no polarization energy")
	player.is_docked = true
	check(ORBS.apply(progress,inventory,weapon,"replication"), "Replication applied")
	var copy: ItemInstance = progress.freighter_storage.back()
	check(copy != weapon and copy.definition == weapon.definition, "Replica is distinct equipment")
	check(copy.get_damage_range() == weapon.get_damage_range() and copy.special_orbs == weapon.special_orbs, "Replica preserves rolls and orbs")
	copy.additional_modifiers[0].value = 1.0
	copy.special_orbs.clear()
	check(is_equal_approx(weapon.additional_modifiers[0].value,25.0) and weapon.special_orbs.size()==1, "Replica changes cannot mutate original")
	var missile := GENERATOR.generate_for_definition(preload("res://resources/items/missile_launcher.tres"),1)
	missile.additional_modifiers = [addon]
	check(is_equal_approx(inventory.get_missile_cooldown(missile),4.0), "Attack speed affects missiles")
	addon.value = 0.0
	for seed_value in 100:
		var no_rare := LOOT.roll(120,true,seed_value,1.0,0.05)
		var rare := LOOT.roll(120,true,seed_value,1.0,0.049)
		check(no_rare.size()==2 and no_rare[1].orb != "replication", "Replication excluded from guaranteed pool")
		check(rare.size()==3 and rare[2].orb == "replication", "Separate five percent replication drop")
	check(LOOT.roll(120,false,1,1.0,0.0).is_empty(), "Regular enemies cannot drop replication")
	return failures