/*
 * Copyright 2021 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 <aidl/android/hardware/graphics/composer3/CommandResultPayload.h>
#include <aidl/android/hardware/graphics/composer3/IComposerClient.h>
#include <inttypes.h>
#include <string.h>

#include <algorithm>
#include <limits>
#include <memory>
#include <vector>

#include "Util.h"

namespace aidl::android::hardware::graphics::composer3::impl {

class ComposerServiceWriter {
public:
    ComposerServiceWriter() { reset(); }

    virtual ~ComposerServiceWriter() { reset(); }

    void reset() { mCommandsResults.clear(); }

    void setError(int32_t index, int32_t errorCode) {
        CommandError error;
        error.commandIndex = index;
        error.errorCode = errorCode;
        mCommandsResults.emplace_back(std::move(error));
    }

    void setPresentOrValidateResult(int64_t display, PresentOrValidate::Result result) {
        PresentOrValidate presentOrValidate;
        presentOrValidate.display = display;
        presentOrValidate.result = result;
        mCommandsResults.emplace_back(std::move(presentOrValidate));
    }

    void setChangedCompositionTypes(int64_t display, const std::vector<int64_t>& layers,
                                    const std::vector<Composition>& types) {
        ChangedCompositionTypes changedCompositionTypes;
        changedCompositionTypes.display = display;
        changedCompositionTypes.layers.reserve(layers.size());
        for (int i = 0; i < layers.size(); i++) {
            auto layer = ChangedCompositionLayer{.layer = layers[i], .composition = types[i]};
            changedCompositionTypes.layers.emplace_back(std::move(layer));
        }
        mCommandsResults.emplace_back(std::move(changedCompositionTypes));
    }

    void setDisplayRequests(int64_t display, int32_t displayRequestMask,
                            const std::vector<int64_t>& layers,
                            const std::vector<int32_t>& layerRequestMasks) {
        DisplayRequest displayRequest;
        displayRequest.display = display;
        displayRequest.mask = displayRequestMask;
        displayRequest.layerRequests.reserve(layers.size());
        for (int i = 0; i < layers.size(); i++) {
            auto layerRequest =
                    DisplayRequest::LayerRequest{.layer = layers[i], .mask = layerRequestMasks[i]};
            displayRequest.layerRequests.emplace_back(std::move(layerRequest));
        }
        mCommandsResults.emplace_back(std::move(displayRequest));
    }

    void setPresentFence(int64_t display, ::ndk::ScopedFileDescriptor presentFence) {
        if (presentFence.get() >= 0) {
            PresentFence presentFenceCommand;
            presentFenceCommand.fence = std::move(presentFence);
            presentFenceCommand.display = display;
            mCommandsResults.emplace_back(std::move(presentFenceCommand));
        } else {
            LOG(WARNING) << __func__ << ": invalid present fence " << presentFence.get();
        }
    }

    void setReleaseFences(int64_t display, const std::vector<int64_t>& layers,
                          std::vector<::ndk::ScopedFileDescriptor> releaseFences) {
        ReleaseFences releaseFencesCommand;
        releaseFencesCommand.display = display;
        for (int i = 0; i < layers.size(); i++) {
            if (releaseFences[i].get() >= 0) {
                ReleaseFences::Layer layer;
                layer.layer = layers[i];
                layer.fence = std::move(releaseFences[i]);
                releaseFencesCommand.layers.emplace_back(std::move(layer));
            } else {
                LOG(WARNING) << __func__ << ": invalid release fence " << releaseFences[i].get();
            }
        }
        mCommandsResults.emplace_back(std::move(releaseFencesCommand));
    }

    void setClientTargetProperty(int64_t display, const ClientTargetProperty& clientTargetProperty,
                                 float brightness) {
        ClientTargetPropertyWithBrightness clientTargetPropertyWithBrightness;
        clientTargetPropertyWithBrightness.display = display;
        clientTargetPropertyWithBrightness.clientTargetProperty = clientTargetProperty;
        clientTargetPropertyWithBrightness.brightness = brightness;
        mCommandsResults.emplace_back(std::move(clientTargetPropertyWithBrightness));
    }

    std::vector<CommandResultPayload> getPendingCommandResults() {
        return std::move(mCommandsResults);
    }

private:
    std::vector<CommandResultPayload> mCommandsResults;
};

} // namespace aidl::android::hardware::graphics::composer3::impl