#include "tchttpservice.h"
QScopedPointer<TCHttpService> TCHttpService::m_instance;

TCHttpService *TCHttpService::getInstance()
{
    if (m_instance.isNull()) {
        m_instance.reset(new TCHttpService);
    }

    return m_instance.data();
}

void TCHttpService::apiLogin()
{
    QByteArray pwdMd5 = QCryptographicHash::hash(m_firstPwd.toUtf8(), QCryptographicHash::Md5);
    QString md5Hex = pwdMd5.toHex();

    QString urlStr;
   if (m_enableSsl)
        urlStr = "https://" + m_domain + "/api/login";
   else
       urlStr = "http://" + m_domain + "/api/login";

    QUrl url(urlStr);
    QJsonObject jsonObj;
    jsonObj["user"]=m_userName;
    jsonObj["pwd"]=md5Hex;
    QJsonDocument jsonDoc(jsonObj);
    QByteArray jsonData = jsonDoc.toJson();
    QMap<QString, QString> headers;
    headers.insert("Content-Type", "application/json");

    QNetworkReply* reply = nullptr;

    QNetworkRequest request(url);
    for (auto ite = headers.constBegin(); ite != headers.constEnd(); ite++){
       request.setRawHeader(ite.key().toUtf8(), ite.value().toUtf8());
    }
    reply = m_manager.post(request, jsonData);

    QObject::connect(reply, &QNetworkReply::finished, [this, reply]() {

        QJsonDocument jsonDoc = QJsonDocument::fromJson(reply->readAll());
        if (jsonDoc.isEmpty())
            return;
        QJsonObject jsonObj = jsonDoc.object();
        int code = jsonObj["code"].toInt();
        if (code == 0) {
            this->m_token = jsonObj["token"].toString();
            qDebug() << this->m_token;
            m_isOnline = true;
            ImageManager::instance()->addDomainUser(m_domain, m_userName);
            QString stdPath = QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation);
            ImageManager::instance()->initialize(stdPath + "/picpanel.db");


            emit signal_loginSuc();
        }

    });

}

void TCHttpService::apiUpload(const QString &filePath)
{

    QString urlStr;
    if (m_enableSsl)
        urlStr = "https://" + m_domain + "/api/upload";
    else
        urlStr = "http://" + m_domain + "/api/upload";



    QFile *file = new QFile(filePath);
    if (!file->open(QIODevice::ReadOnly)) {
        qDebug() << "无法打开文件:" << filePath;
        delete file;
        return;
    }

    // 计算文件 MD5
    QCryptographicHash hash(QCryptographicHash::Md5);
    hash.addData(file);
    QString md5 = hash.result().toHex();

    // 重置文件指针
    file->seek(0);

    // 获取文件大小
    qint64 fileSize = file->size();

    // 创建 multipart 请求
#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
#else
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormData);
#endif
    // 添加文件部分
    QHttpPart filePart;
    filePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("application/octet-stream"));
    filePart.setHeader(QNetworkRequest::ContentDispositionHeader,
                       QVariant("form-data; name=\"file\"; filename=\"" + QFileInfo(filePath).fileName() + "\""));
    filePart.setBodyDevice(file);
    multiPart->append(filePart);

    // 添加用户信息部分
    QHttpPart userPart;
    userPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"user\""));
    userPart.setBody(m_userName.toUtf8());
    multiPart->append(userPart);

    // 添加 MD5 部分
    QHttpPart md5Part;
    md5Part.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"md5\""));
    md5Part.setBody(md5.toUtf8());
    multiPart->append(md5Part);

    // 添加文件大小部分
    QHttpPart sizePart;
    sizePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"size\""));
    sizePart.setBody(QString::number(fileSize).toUtf8());
    multiPart->append(sizePart);

    // 创建网络请求
    QNetworkRequest request(urlStr); // 替换为实际的服务器地址
    request.setHeader(QNetworkRequest::ContentTypeHeader, "multipart/form-data; boundary=" + multiPart->boundary());

    // 发送请求
    // QNetworkAccessManager *manager = new QNetworkAccessManager(this);
    QNetworkReply *reply = m_manager.post(request, multiPart);

    // 连接信号槽
    connect(reply, &QNetworkReply::finished, this, [=]() {
        if (reply->error() == QNetworkReply::NoError) {
            qDebug() << "上传成功:";
            QJsonDocument jsonDoc = QJsonDocument::fromJson(reply->readAll());
            QJsonObject jsonObj = jsonDoc.object();
            QString fileUrl = jsonObj["url"].toString();
            ImageManager::instance()->addImageUrl(m_domain, m_userName, fileUrl);
            emit signal_uploadFileSec(fileUrl);
        } else {
            qDebug() << "上传失败:" << reply->errorString();
        }

        reply->deleteLater();
        multiPart->deleteLater();
    });

    connect(reply, &QNetworkReply::uploadProgress, this, [this](qint64 bytesSent, qint64 bytesTotal) {
        if (bytesTotal > 0) {
            int progress = (bytesSent * 100) / bytesTotal;
            emit signal_progressUpdate(progress);
            qDebug() << "上传进度:" << progress << "%";
        }
    });
}

void TCHttpService::apiSharePicShare(const QString &fileName, const QString &md5)
{

    QString urlStr;
    if (m_enableSsl)
        urlStr = "https://" + m_domain + "/api/sharepic";
    else
        urlStr = "http://" + m_domain + "/api/sharepic";

    QMap<QString, QString> headers;
    QMap<QString, QString> body;
    QMap<QString, QString> params;

    headers.insert("Content-Type", "application/json");

    QString bodyStr = QString("\"%1\":\"%2\",\"%3\":\"%4\",\"%5\":\"%6\",\"%7\":\"%8\"").arg("token").arg(m_token).
            arg("user").arg(m_userName).arg("md5").arg(md5).arg("filename").arg(fileName);

    params.insert("cmd", "share");

}

void TCHttpService::setConfiguration(QString userName, QString firstPwd, QString domain)
{
    this->m_domain = domain;
    this->m_userName = userName;
    this->m_firstPwd = firstPwd;
    apiLogin();
}

void TCHttpService::setSsl(bool enable)
{
    this->m_enableSsl = enable;
}

bool TCHttpService::getOnlineState()
{
    return m_isOnline;
}

void TCHttpService::setUploadNum(int nb)
{
    this->m_uploadNum = nb;
}

void TCHttpService::downloadImage(const QString &requestId, const QUrl &imageUrl)
{
#if 0
    QPixmap cachedPixmap;
    if (QPixmapCache::find(imageUrl.toString(), &cachedPixmap)) {
        emit signal_imageDownloaded(requestId, cachedPixmap);
        return;
    }

    if (getCachedImage(imageUrl, cachedPixmap)) {
        QPixmapCache::insert(imageUrl.toString(), cachedPixmap);
        emit signal_imageDownloaded(requestId, cachedPixmap);
        return;
    }
#endif
    QNetworkRequest request(imageUrl);
    QNetworkReply* reply = m_manager.get(request);

    connect(reply, &QNetworkReply::finished, [this, reply](){

        QString requestId = m_pendingRequests.take(reply);

        if (reply->error() != QNetworkReply::NoError) {
            emit signal_downloadFailed(requestId, reply->errorString());
        }
        else {
            QPixmap pixmap;
            if (pixmap.loadFromData(reply->readAll())) {
                emit signal_imageDownloaded(requestId, pixmap);
            }
            else {
                emit signal_downloadFailed(requestId, "Failed to load image data");
            }
        }

        reply->deleteLater();
    });
    m_pendingRequests[reply] = requestId;
}

QUrl TCHttpService::encodeUrl(QString urlStr, QMap<QString, QString> params)
{
    QUrlQuery query;
    for(auto ite = params.constBegin(); ite != params.constEnd(); ite++){
        query.addQueryItem(ite.key(), ite.value());
    }

    QUrl url(urlStr);
    url.setQuery(query);

    return url;
}

void TCHttpService::cleanOldCacheFiles()
{
    QDir cacheDir(QStandardPaths::writableLocation(QStandardPaths::CacheLocation));
    cacheDir.setNameFilters(QStringList() << "*.png" << "*.jpg" << "*.jpeg" << "*.svg");
    cacheDir.setFilter(QDir::Files);

    foreach (QString dirFile, cacheDir.entryList()) {
        QFileInfo fileInfo(cacheDir.absoluteFilePath(dirFile));
        if (fileInfo.lastModified().daysTo(QDateTime::currentDateTime()) > m_max_cache_days) {
            cacheDir.remove(dirFile);
        }
    }

    qint64 totalSize = 0;
    QFileInfoList files = cacheDir.entryInfoList(QDir::Files, QDir::Time | QDir::Reversed);

    foreach(QFileInfo file, files) {
        totalSize += file.size();
    }

    if (totalSize > m_disk_cache_size_mb * 1024 * 1024) {
        foreach (QFileInfo file, files) {
            if (totalSize <= m_disk_cache_size_mb * 1024 * 1024 * 0.9)
                break;

            totalSize -= file.size();
            QFile::remove(file.absoluteFilePath());
        }
    }
}

bool TCHttpService::getCachedImage(const QUrl &imageUrl, QPixmap &pixmap)
{
    QString filePath = getCacheFilePath(imageUrl);

    if (QFile::exists(filePath)) {
        QFileInfo info(filePath);
        if (info.lastModified().daysTo(QDateTime::currentDateTime()) > m_max_cache_days) {
            QFile::remove(filePath);
            return false;
        }

        if (pixmap.load(filePath)) {
            return true;
        }

    }

    return false;
}

QString TCHttpService::getCacheFilePath(const QUrl &imageUrl)
{
    QCryptographicHash hash(QCryptographicHash::Md5);
    hash.addData(imageUrl.toString().toUtf8());
    QString fileName = hash.result().toHex() + ".png";

    return QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/" + fileName;
}

TCHttpService::TCHttpService(QObject *parent) : QObject(parent)
{

}

void TCHttpService::slot_downloadFinished(QNetworkReply *reply)
{
    QString requestId = m_pendingRequests.take(reply);

    if (reply->error() != QNetworkReply::NoError) {
        emit signal_downloadFailed(requestId, reply->errorString());
    }
    else {
        QPixmap pixmap;
        if (pixmap.loadFromData(reply->readAll())) {
            emit signal_imageDownloaded(requestId, pixmap);
        }
        else {
            emit signal_downloadFailed(requestId, "Failed to load image data");
        }
    }


    reply->deleteLater();
}