cocos-engine/native/cocos/network/Downloader.cpp

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 Copyright (c) 2017-2022 Xiamen Yaji Software Co., Ltd.

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#include <memory>

#include "network/Downloader.h"

// include platform specific implement class
#if (CC_PLATFORM == CC_PLATFORM_MAC_OSX || CC_PLATFORM == CC_PLATFORM_MAC_IOS)

    #include "network/DownloaderImpl-apple.h"
    #define DownloaderImpl DownloaderApple //NOLINT(readability-identifier-naming)

#elif (CC_PLATFORM == CC_PLATFORM_ANDROID || CC_PLATFORM == CC_PLATFORM_OHOS)

    #include "network/Downloader-java.h"
    #define DownloaderImpl DownloaderJava //NOLINT(readability-identifier-naming)

#else

    #include "network/Downloader-curl.h"
    #define DownloaderImpl DownloaderCURL //NOLINT(readability-identifier-naming)

#endif

namespace cc {
namespace network {

DownloadTask::DownloadTask() {
    DLLOG("Construct DownloadTask %p", this);
}

DownloadTask::~DownloadTask() {
    DLLOG("Destruct DownloadTask %p", this);
}

////////////////////////////////////////////////////////////////////////////////
//  Implement Downloader
Downloader::Downloader() {
    DownloaderHints hints =
        {
            6,
            45,
            ".tmp"};
    new (this) Downloader(hints);
}

Downloader::Downloader(const DownloaderHints &hints) {
    DLLOG("Construct Downloader %p", this);
    _impl                 = std::make_unique<DownloaderImpl>(hints);
    _impl->onTaskProgress = [this](const DownloadTask &task,
                                   int64_t             bytesReceived,
                                   int64_t             totalBytesReceived,
                                   int64_t             totalBytesExpected,
                                   std::function<int64_t(void *buffer, int64_t len)> & /*transferDataToBuffer*/) {
        if (onTaskProgress) {
            onTaskProgress(task, bytesReceived, totalBytesReceived, totalBytesExpected);
        }
    };

    _impl->onTaskFinish = [this](const DownloadTask &              task,
                                 int                               errorCode,
                                 int                               errorCodeInternal,
                                 const std::string &               errorStr,
                                 const std::vector<unsigned char> &data) {
        if (DownloadTask::ERROR_NO_ERROR != errorCode) {
            if (onTaskError) {
                onTaskError(task, errorCode, errorCodeInternal, errorStr);
            }
            return;
        }

        // success callback
        if (task.storagePath.length()) {
            if (onFileTaskSuccess) {
                onFileTaskSuccess(task);
            }
        } else {
            // data task
            if (onDataTaskSuccess) {
                onDataTaskSuccess(task, data);
            }
        }
    };
}

Downloader::~Downloader() {
    DLLOG("Destruct Downloader %p", this);
}

std::shared_ptr<const DownloadTask> Downloader::createDownloadDataTask(const std::string &srcUrl, const std::string &identifier /* = ""*/) {
    auto *                              iTask = new (std::nothrow) DownloadTask();
    std::shared_ptr<const DownloadTask> task(iTask);
    do {
        iTask->requestURL = srcUrl;
        iTask->identifier = identifier;
        if (0 == srcUrl.length()) {
            if (onTaskError) {
                onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or is empty.");
            }
            task.reset();
            break;
        }
        iTask->_coTask.reset(_impl->createCoTask(task));
    } while (false);

    return task;
}

std::shared_ptr<const DownloadTask> Downloader::createDownloadFileTask(const std::string &                       srcUrl,
                                                                       const std::string &                       storagePath,
                                                                       const std::map<std::string, std::string> &header,
                                                                       const std::string &                       identifier /* = ""*/) {
    auto *                              iTask = new (std::nothrow) DownloadTask();
    std::shared_ptr<const DownloadTask> task(iTask);
    do {
        iTask->requestURL  = srcUrl;
        iTask->storagePath = storagePath;
        iTask->identifier  = identifier;
        iTask->header      = header;
        if (0 == srcUrl.length() || 0 == storagePath.length()) {
            if (onTaskError) {
                onTaskError(*task, DownloadTask::ERROR_INVALID_PARAMS, 0, "URL or storage path is empty.");
            }
            task.reset();
            break;
        }
        iTask->_coTask.reset(_impl->createCoTask(task));
    } while (false);

    return task;
}
std::shared_ptr<const DownloadTask> Downloader::createDownloadFileTask(const std::string &srcUrl,
                                                                       const std::string &storagePath,
                                                                       const std::string &identifier /* = ""*/) {
    const std::map<std::string, std::string> emptyHeader;
    return createDownloadFileTask(srcUrl, storagePath, emptyHeader, identifier);
}

void Downloader::abort(const DownloadTask &task) {
    _impl->abort(task._coTask);
}
//std::string Downloader::getFileNameFromUrl(const std::string& srcUrl)
//{
//    // Find file name and file extension
//    std::string filename;
//    unsigned long found = srcUrl.find_last_of("/\\");
//    if (found != std::string::npos)
//        filename = srcUrl.substr(found+1);
//    return filename;
//}

} // namespace network
} // namespace cc