// ST4Pin unit tests
#include <unity.h>
#include "mock_state.h"
#include "ST4Pin.h"

void setUp() { MockState::reset(); }
void tearDown() {}

void test_active_high_activate() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_HIGH);
    pin.activate();
    TEST_ASSERT_EQUAL(HIGH, MockState::gpioStates[5]);
    TEST_ASSERT_TRUE(pin.isActive());
}

void test_active_high_deactivate() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_HIGH);
    pin.activate();
    pin.deactivate();
    TEST_ASSERT_EQUAL(LOW, MockState::gpioStates[5]);
    TEST_ASSERT_FALSE(pin.isActive());
}

void test_active_low_activate() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_LOW);
    pin.activate();
    TEST_ASSERT_EQUAL(LOW, MockState::gpioStates[5]);
    TEST_ASSERT_TRUE(pin.isActive());
}

void test_active_low_deactivate() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_LOW);
    pin.activate();
    pin.deactivate();
    TEST_ASSERT_EQUAL(HIGH, MockState::gpioStates[5]);
    TEST_ASSERT_FALSE(pin.isActive());
}

void test_begin_sets_output() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_HIGH);
    TEST_ASSERT_EQUAL(OUTPUT, MockState::gpioModes[5]);
}

void test_begin_deactivates() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_HIGH);
    // ACTIVE_HIGH deactivated = LOW
    TEST_ASSERT_EQUAL(LOW, MockState::gpioStates[5]);
    TEST_ASSERT_FALSE(pin.isActive());
}

void test_begin_deactivates_active_low() {
    ST4Pin pin;
    pin.begin(5, ST4PinLogic::ACTIVE_LOW);
    // ACTIVE_LOW deactivated = HIGH
    TEST_ASSERT_EQUAL(HIGH, MockState::gpioStates[5]);
    TEST_ASSERT_FALSE(pin.isActive());
}

void test_negative_pin_noop() {
    ST4Pin pin;
    // Default constructed pin has pin_=-1
    pin.activate();
    pin.deactivate();
    TEST_ASSERT_FALSE(pin.isActive());
    TEST_ASSERT_EQUAL(-1, pin.pin());
}

void test_pin_returns_assigned() {
    ST4Pin pin;
    pin.begin(7, ST4PinLogic::ACTIVE_HIGH);
    TEST_ASSERT_EQUAL(7, pin.pin());
}

int main() {
    UNITY_BEGIN();
    RUN_TEST(test_active_high_activate);
    RUN_TEST(test_active_high_deactivate);
    RUN_TEST(test_active_low_activate);
    RUN_TEST(test_active_low_deactivate);
    RUN_TEST(test_begin_sets_output);
    RUN_TEST(test_begin_deactivates);
    RUN_TEST(test_begin_deactivates_active_low);
    RUN_TEST(test_negative_pin_noop);
    RUN_TEST(test_pin_returns_assigned);
    return UNITY_END();
}