extends RefCounted

## Weapon registry tests — no framework dependencies, no class_name types.
## Each test_* method returns "" on pass or an error message on fail.
##
## Uses direct integer enum values to avoid class_name loading order issues:
##   FireMode: SEMI=0, AUTO=1, MELEE=2

const Registry := preload("res://examples/multiplayer-fps/scripts/data/weapon_registry.gd")

const KNIFE := 1
const GLOCK := 2
const USP   := 3
const AK47  := 4
const M4A1  := 5
const AWP   := 6

func _check_field(w, field: String, expected) -> String:
	var actual = w.get(field)
	if actual != expected:
		return "  %s: got %s, expected %s" % [field, str(actual), str(expected)]
	return ""

func test_all_weapons_registered() -> String:
	var ids := [KNIFE, GLOCK, USP, AK47, M4A1, AWP]
	for id in ids:
		var w := Registry.get_weapon(id)
		if w == null:
			return "Weapon ID %d not registered" % id
	return ""

func test_unknown_id_returns_null() -> String:
	if Registry.get_weapon(0) != null:  return "ID 0 should return null"
	if Registry.get_weapon(99) != null: return "ID 99 should return null"
	if Registry.get_weapon(-1) != null: return "ID -1 should return null"
	return ""

func test_ak47_stats() -> String:
	var w := Registry.get_weapon(AK47)
	if w == null:  return "AK47 not found"
	var e := ""
	e += _check_field(w, "weapon_name", "AK-47")
	e += _check_field(w, "damage", 36)
	e += _check_field(w, "fire_mode", 1)  # AUTO=1
	e += _check_field(w, "team", 0)       # T=0
	e += _check_field(w, "price", 2500)
	e += _check_field(w, "slot", 2)
	return e

func test_awp_stats() -> String:
	var w := Registry.get_weapon(AWP)
	if w == null:  return "AWP not found"
	var e := ""
	e += _check_field(w, "weapon_name", "AWP")
	e += _check_field(w, "damage", 110)
	e += _check_field(w, "fire_mode", 0)  # SEMI=0
	e += _check_field(w, "price", 4750)
	return e

func test_knife_stats() -> String:
	var w := Registry.get_weapon(KNIFE)
	if w == null:  return "Knife not found"
	var e := ""
	e += _check_field(w, "weapon_name", "Knife")
	e += _check_field(w, "damage", 50)
	e += _check_field(w, "fire_mode", 2)  # MELEE=2
	e += _check_field(w, "price", 0)
	return e

func test_default_pistol() -> String:
	var e := ""
	var t := Registry.get_default_pistol(0)
	if t != GLOCK:  e += "  T side should get Glock, got %d" % t
	var ct := Registry.get_default_pistol(1)
	if ct != USP:   e += "  CT side should get USP, got %d" % ct
	return e