/*
 * Copyright 2022 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.
 */

#pragma once

#include <list>
#include <memory>

#include <InputDevice.h>
#include <InputMapper.h>
#include <NotifyArgs.h>
#include <ftl/flags.h>
#include <gmock/gmock.h>
#include <utils/StrongPointer.h>

#include "FakeEventHub.h"
#include "FakeInputReaderPolicy.h"
#include "InstrumentedInputReader.h"
#include "InterfaceMocks.h"
#include "TestConstants.h"
#include "TestInputListener.h"
#include "input/PropertyMap.h"

namespace android {

class InputMapperUnitTest : public testing::Test {
protected:
    static constexpr int32_t EVENTHUB_ID = 1;
    static constexpr int32_t DEVICE_ID = END_RESERVED_ID + 1000;
    static constexpr float INITIAL_CURSOR_X = 400;
    static constexpr float INITIAL_CURSOR_Y = 240;
    virtual void SetUp() override { SetUpWithBus(0); }
    virtual void SetUpWithBus(int bus);

    /**
     * Initializes mDevice and mDeviceContext. When this happens, mDevice takes a copy of
     * mPropertyMap, so tests that need to set configuration properties should do so before calling
     * this. Others will most likely want to call it in their SetUp method.
     */
    void createDevice();

    void setupAxis(int axis, bool valid, int32_t min, int32_t max, int32_t resolution);

    void expectScanCodes(bool present, std::set<int> scanCodes);

    void setScanCodeState(KeyState state, std::set<int> scanCodes);

    void setKeyCodeState(KeyState state, std::set<int> keyCodes);

    std::list<NotifyArgs> process(int32_t type, int32_t code, int32_t value);
    std::list<NotifyArgs> process(nsecs_t when, int32_t type, int32_t code, int32_t value);

    InputDeviceIdentifier mIdentifier;
    MockEventHubInterface mMockEventHub;
    sp<FakeInputReaderPolicy> mFakePolicy;
    std::shared_ptr<FakePointerController> mFakePointerController;
    MockInputReaderContext mMockInputReaderContext;
    std::unique_ptr<InputDevice> mDevice;

    std::unique_ptr<InputDeviceContext> mDeviceContext;
    InputReaderConfiguration mReaderConfiguration;
    // The mapper should be created by the subclasses.
    std::unique_ptr<InputMapper> mMapper;
    PropertyMap mPropertyMap;
};

/**
 * Deprecated - use InputMapperUnitTest instead.
 */
class InputMapperTest : public testing::Test {
protected:
    static const char* DEVICE_NAME;
    static const char* DEVICE_LOCATION;
    static constexpr int32_t DEVICE_ID = END_RESERVED_ID + 1000;
    static constexpr int32_t DEVICE_GENERATION = 2;
    static constexpr int32_t DEVICE_CONTROLLER_NUMBER = 0;
    static const ftl::Flags<InputDeviceClass> DEVICE_CLASSES;
    static constexpr int32_t EVENTHUB_ID = 1;

    std::shared_ptr<FakeEventHub> mFakeEventHub;
    sp<FakeInputReaderPolicy> mFakePolicy;
    std::unique_ptr<TestInputListener> mFakeListener;
    std::unique_ptr<InstrumentedInputReader> mReader;
    std::shared_ptr<InputDevice> mDevice;

    virtual void SetUp(ftl::Flags<InputDeviceClass> classes, int bus = 0);
    void SetUp() override;
    void TearDown() override;

    void addConfigurationProperty(const char* key, const char* value);
    std::list<NotifyArgs> configureDevice(ConfigurationChanges changes);
    std::shared_ptr<InputDevice> newDevice(int32_t deviceId, const std::string& name,
                                           const std::string& location, int32_t eventHubId,
                                           ftl::Flags<InputDeviceClass> classes, int bus = 0);
    template <class T, typename... Args>
    T& addMapperAndConfigure(Args... args) {
        T& mapper =
                mDevice->addMapper<T>(EVENTHUB_ID, mFakePolicy->getReaderConfiguration(), args...);
        configureDevice(/*changes=*/{});
        std::list<NotifyArgs> resetArgList = mDevice->reset(ARBITRARY_TIME);
        resetArgList += mapper.reset(ARBITRARY_TIME);
        // Loop the reader to flush the input listener queue.
        for (const NotifyArgs& loopArgs : resetArgList) {
            mFakeListener->notify(loopArgs);
        }
        mReader->loopOnce();
        return mapper;
    }

    template <class T, typename... Args>
    T& constructAndAddMapper(Args... args) {
        // ensure a device entry exists for this eventHubId
        mDevice->addEmptyEventHubDevice(EVENTHUB_ID);
        // configure the empty device
        configureDevice(/*changes=*/{});

        return mDevice->constructAndAddMapper<T>(EVENTHUB_ID, mFakePolicy->getReaderConfiguration(),
                                                 args...);
    }

    void setDisplayInfoAndReconfigure(int32_t displayId, int32_t width, int32_t height,
                                      ui::Rotation orientation, const std::string& uniqueId,
                                      std::optional<uint8_t> physicalPort,
                                      ViewportType viewportType);
    void clearViewports();
    std::list<NotifyArgs> process(InputMapper& mapper, nsecs_t when, nsecs_t readTime, int32_t type,
                                  int32_t code, int32_t value);
    void resetMapper(InputMapper& mapper, nsecs_t when);

    std::list<NotifyArgs> handleTimeout(InputMapper& mapper, nsecs_t when);
};

void assertMotionRange(const InputDeviceInfo& info, int32_t axis, uint32_t source, float min,
                       float max, float flat, float fuzz);

void assertPointerCoords(const PointerCoords& coords, float x, float y, float pressure, float size,
                         float touchMajor, float touchMinor, float toolMajor, float toolMinor,
                         float orientation, float distance, float scaledAxisEpsilon = 1.f);

} // namespace android