extends GutTest

## Tests for optional effect prompting in AbilitySystem


# =============================================================================
# BUILD EFFECT DESCRIPTION TESTS
# =============================================================================

func test_build_description_draw_single() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DRAW", "amount": 1}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Draw 1 card", "Should describe single card draw")
	ability_system.free()


func test_build_description_draw_multiple() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DRAW", "amount": 3}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Draw 3 cards", "Should describe multiple card draw with plural")
	ability_system.free()


func test_build_description_damage() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DAMAGE", "amount": 5000}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Deal 5000 damage", "Should describe damage amount")
	ability_system.free()


func test_build_description_power_mod_positive() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "POWER_MOD", "amount": 2000}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Give +2000 power", "Should describe positive power mod with +")
	ability_system.free()


func test_build_description_power_mod_negative() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "POWER_MOD", "amount": -3000}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Give -3000 power", "Should describe negative power mod")
	ability_system.free()


func test_build_description_dull() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DULL"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Dull a Forward", "Should describe dull effect")
	ability_system.free()


func test_build_description_activate() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "ACTIVATE"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Activate a card", "Should describe activate effect")
	ability_system.free()


func test_build_description_break() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "BREAK"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Break a card", "Should describe break effect")
	ability_system.free()


func test_build_description_return() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "RETURN"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Return a card to hand", "Should describe return effect")
	ability_system.free()


func test_build_description_search() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "SEARCH"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Search your deck", "Should describe search effect")
	ability_system.free()


func test_build_description_discard_single() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DISCARD", "amount": 1}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Discard 1 card", "Should describe single discard")
	ability_system.free()


func test_build_description_discard_multiple() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "DISCARD", "amount": 2}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Discard 2 cards", "Should describe multiple discard with plural")
	ability_system.free()


func test_build_description_uses_original_text() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "UNKNOWN_EFFECT", "original_text": "Do something special"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Do something special", "Should use original_text for unknown effects")
	ability_system.free()


func test_build_description_fallback() -> void:
	var ability_system = AbilitySystem.new()
	var effect = {"type": "UNKNOWN_EFFECT"}

	var description = ability_system._build_effect_description(effect)

	assert_eq(description, "Use this effect", "Should use fallback for unknown effects without original_text")
	ability_system.free()


# =============================================================================
# OPTIONAL EFFECT FLAG TESTS
# =============================================================================

func test_optional_flag_is_detected() -> void:
	var effect_with_optional = {"type": "DRAW", "amount": 1, "optional": true}
	var effect_without_optional = {"type": "DRAW", "amount": 1}

	assert_true(effect_with_optional.get("optional", false), "Should detect optional flag")
	assert_false(effect_without_optional.get("optional", false), "Should default to false")


# =============================================================================
# INTEGRATION TESTS (Signal Emission)
# =============================================================================

func test_optional_effect_signal_contains_correct_data() -> void:
	# This test verifies the signal parameters are correct
	var ability_system = AbilitySystem.new()
	var received_player_index = -1
	var received_effect = {}
	var received_description = ""
	var received_callback = null

	ability_system.optional_effect_prompt.connect(func(player_index, effect, description, callback):
		received_player_index = player_index
		received_effect = effect
		received_description = description
		received_callback = callback
	)

	# Manually emit to test signal structure
	var test_effect = {"type": "DRAW", "amount": 2, "optional": true}
	var test_callback = func(_accepted): pass
	ability_system.optional_effect_prompt.emit(0, test_effect, "Draw 2 cards", test_callback)

	assert_eq(received_player_index, 0, "Player index should be passed")
	assert_eq(received_effect.type, "DRAW", "Effect should be passed")
	assert_eq(received_description, "Draw 2 cards", "Description should be passed")
	assert_not_null(received_callback, "Callback should be passed")

	ability_system.free()