/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <gtest/gtest.h>

#define LOG_TAG "CameraModuleTest"
#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <utils/StrongPointer.h>
#include <common/CameraDeviceBase.h>

#include "hardware/hardware.h"
#include "hardware/camera2.h"

#include "CameraModuleFixture.h"

namespace android {
namespace camera2 {
namespace tests {

class CameraModuleTest : public ::testing::Test,
                                  public CameraModuleFixture<> {

public:
    CameraModuleTest() {
        CameraModuleFixture::SetUp();
    }

    ~CameraModuleTest() {
        CameraModuleFixture::TearDown();
    }

    status_t initializeDevice(int cameraId) {

        // ignore HAL1s. count as test pass
        status_t stat;
        if (isDeviceVersionHal2(cameraId, &stat) && stat == OK) {
            stat = mDevice->initialize(mModule);
        }

        return stat;
    }

    bool isDeviceVersionHal2(int cameraId, status_t* status) {
        return getDeviceVersion(cameraId, status)
               >= CAMERA_DEVICE_API_VERSION_2_0;
    }
};

TEST_F(CameraModuleTest, LoadModule) {

    TEST_EXTENSION_FORKING_INIT;

    status_t stat;
    for (int i = 0; i < mNumberOfCameras; ++i) {
        if (isDeviceVersionHal2(i, &stat) && stat == OK) {
            CreateCamera(i, &mDevice);
            ASSERT_EQ(OK, initializeDevice(i))
                << "Failed to initialize device " << i;
            mDevice.clear();
        } else {
            const ::testing::TestInfo* const test_info =
                ::testing::UnitTest::GetInstance()->current_test_info();
            std::cerr << "Skipping test "
                      << test_info->test_case_name() << "."
                      << test_info->name()
                      << " because HAL device version is V1"
                      << std::endl;
        }
    }

}

TEST_F(CameraModuleTest, LoadModuleBadIndices) {

    TEST_EXTENSION_FORKING_INIT;

    int idx[] = { -1, mNumberOfCameras, mNumberOfCameras + 1 };
    hw_device_t *device = NULL;

    for (unsigned i = 0; i < sizeof(idx)/sizeof(idx[0]); ++i) {
        String8 deviceName = String8::format("%d", idx[i]);
        status_t res = mModule->open(deviceName, &device);
        EXPECT_NE(OK, res);
        EXPECT_EQ(-ENODEV, res)
            << "Incorrect error code when trying to open camera with invalid id "
            << deviceName;
    }
}

TEST_F(CameraModuleTest, GetCameraInfo) {

    TEST_EXTENSION_FORKING_INIT;

    for (int i = 0; i < mNumberOfCameras; ++i) {
        struct camera_info info;
        ASSERT_EQ(OK, mModule->getCameraInfo(i, &info));
    }

}

TEST_F(CameraModuleTest, GetCameraInfoBadIndices) {

    TEST_EXTENSION_FORKING_INIT;

    int idx[] = { -1, mNumberOfCameras, mNumberOfCameras + 1 };
    for (unsigned i = 0; i < sizeof(idx)/sizeof(idx[0]); ++i) {
        struct camera_info info;
        EXPECT_NE(OK, mModule->getCameraInfo(idx[i], &info));
        EXPECT_EQ(-EINVAL, mModule->getCameraInfo(idx[i], &info))
            << "Incorrect error code for get_camera_info idx= "
            << idx[i];
    }
}

/**
 * TODO: Additional test to add: open two cameras at once.
 *       (is allowed to fail, at least for now, but should not blow up)
 *     - open same device multiple times
 *     - close same device multiple times
 */


}
}
}