package day20

import (
	"log"
	"testing"
)

func TestPropagateButtonPressExample1(t *testing.T) {
	filename := "example1"
	modules := ReadModules(filename)
	t.Log("got modules:\n", modules)

	low, high := PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("modules after single button press:\n", modules)

	success := low == 8 && high == 4
	if !success {
		t.Errorf("expected low 8 got %d, high 4 got %d", low, high)
	}
}

func TestPropagateButtonPressExample2(t *testing.T) {
	filename := "example2"
	modules := ReadModules(filename)
	t.Log("got modules:\n", modules)
	InitStuffs(modules)

	low, high := PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("modules after single button press:\n", modules)

	success := low == 4 && high == 4
	if !success {
		t.Errorf("expected low 4 got %d, high 4 got %d", low, high)
	}
}

func TestPropagateButtonPressExample2FourSteps(t *testing.T) {
	filename := "example2"
	modules := ReadModules(filename)
	t.Log("got modules:\n", modules)
	InitStuffs(modules)

	initialModulesState := ModulesState(modules)

	low, high := PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("#1 button press:\n", modules)
	success := low == 4 && high == 4
	if !success {
		t.Errorf("expected low 4 got %d, high 4 got %d", low, high)
	}

	low, high = PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("#2 button press:\n", modules)
	success = low == 4 && high == 2
	if !success {
		t.Errorf("expected low 4 got %d, high 2 got %d", low, high)
	}
	secondState := ModulesState(modules)
	if initialModulesState == secondState {
		t.Error("initial state should be different from second")
	}

	low, high = PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("#3 button press:\n", modules)
	success = low == 5 && high == 3
	if !success {
		t.Errorf("expected low 5 got %d, high 3 got %d", low, high)
	}
	thirdState := ModulesState(modules)
	if initialModulesState == thirdState {
		t.Error("initial state should be different from third")
	}

	low, high = PropagateButtonPress(modules, 0)
	t.Logf("got low %d and high %d\n", low, high)
	t.Log("#4 button press:\n", modules)
	success = low == 4 && high == 2
	if !success {
		t.Errorf("expected low 4 got %d, high 2 got %d", low, high)
	}

	lastState := ModulesState(modules)

	log.Print("initial modules state:\n", initialModulesState)
	log.Print("after 4 steps modules state:\n", lastState)
	if initialModulesState != lastState {
		t.Error("expected state to be same after 4 steps for example 2")
	}

}

func TestExample1TheQuestion(t *testing.T) {
	filename := "example1"
	modules := ReadModules(filename)
	InitStuffs(modules)

	low, high := Count10000ButtonPresses(modules)
	t.Log("got low and high: ", low, high)
	t.Log("response is: ", low * high)
}