#include "test_support.h"

#include <cstddef>

#include "../../switch_input.h"

namespace {

bool switch_input_constants_match_legacy_values() {
    // Given/When: the shared input constants are compiled after extraction.
    // Then: every UART-visible legacy value remains unchanged.
    CHECK(SWITCH_PRO_HAT_UP == 0x00 && SWITCH_PRO_HAT_UPRIGHT == 0x01);
    CHECK(SWITCH_PRO_HAT_RIGHT == 0x02 && SWITCH_PRO_HAT_DOWNRIGHT == 0x03);
    CHECK(SWITCH_PRO_HAT_DOWN == 0x04 && SWITCH_PRO_HAT_DOWNLEFT == 0x05);
    CHECK(SWITCH_PRO_HAT_LEFT == 0x06 && SWITCH_PRO_HAT_UPLEFT == 0x07);
    CHECK(SWITCH_PRO_HAT_NOTHING == 0x08);
    CHECK(SWITCH_PRO_MASK_Y == (1U << 0) && SWITCH_PRO_MASK_B == (1U << 1));
    CHECK(SWITCH_PRO_MASK_A == (1U << 2) && SWITCH_PRO_MASK_X == (1U << 3));
    CHECK(SWITCH_PRO_MASK_L == (1U << 4) && SWITCH_PRO_MASK_R == (1U << 5));
    CHECK(SWITCH_PRO_MASK_ZL == (1U << 6) && SWITCH_PRO_MASK_ZR == (1U << 7));
    CHECK(SWITCH_PRO_MASK_MINUS == (1U << 8) && SWITCH_PRO_MASK_PLUS == (1U << 9));
    CHECK(SWITCH_PRO_MASK_L3 == (1U << 10) && SWITCH_PRO_MASK_R3 == (1U << 11));
    CHECK(SWITCH_PRO_MASK_HOME == (1U << 12) && SWITCH_PRO_MASK_CAPTURE == (1U << 13));
    CHECK(SWITCH_PRO_JOYSTICK_MIN == 0x0000);
    CHECK(SWITCH_PRO_JOYSTICK_MID == 0x7FFF);
    CHECK(SWITCH_PRO_JOYSTICK_MAX == 0xFFFF);
    return true;
}

bool switch_input_layout_matches_legacy_layout() {
    // Given/When: the shared input types are compiled after extraction.
    // Then: field offsets and aggregate sizes match the former driver-owned layout.
    CHECK(sizeof(SwitchImuSample) == 12);
    CHECK(offsetof(SwitchImuSample, accel_x) == 0);
    CHECK(offsetof(SwitchImuSample, gyro_z) == 10);
    CHECK(offsetof(SwitchInputState, dpad_up) == 0);
    CHECK(offsetof(SwitchInputState, button_a) == 4);
    CHECK(offsetof(SwitchInputState, button_r3) == 17);
    CHECK(offsetof(SwitchInputState, lx) == 18);
    CHECK(offsetof(SwitchInputState, ry) == 24);
    CHECK(offsetof(SwitchInputState, imu_sample_count) == 26);
    CHECK(offsetof(SwitchInputState, imu_samples) == 28);
    CHECK(sizeof(SwitchInputState) == 64);
    return true;
}

}  // namespace

void run_switch_input_tests(TestRunner& runner) {
    runner.run("shared input constants preserve legacy values", switch_input_constants_match_legacy_values);
    runner.run("shared input types preserve legacy layout", switch_input_layout_matches_legacy_layout);
}