// Copyright (C) 2020 ~ 2021 Uniontech Software Technology Co., Ltd.
// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: GPL-3.0-or-later

#include "singerlistview.h"

#include <QDebug>
#include <QDir>
#include <QProcess>
#include <QFileInfo>
#include <QResizeEvent>
#include <QStandardItemModel>
#include <QMimeData>

#include <DMenu>
#include <DDialog>
#include <DDesktopServices>
#include <DScrollBar>

#include "util/pinyinsearch.h"

#include "singerdelegate.h"
#include "singerdatamodel.h"
#include "databaseservice.h"
#include "commonservice.h"
#include "global.h"
#include "ac-desktop-define.h"

// 升序
bool moreThanTimestampASC(SingerInfo v1, SingerInfo v2)
{
    return v1.timestamp < v2.timestamp;
}

bool moreThanSingerASC(SingerInfo v1, SingerInfo v2)
{
    return v1.pinyinSinger < v2.pinyinSinger;
}
// 降序
bool moreThanTimestampDES(SingerInfo v1, SingerInfo v2)
{
    return v1.timestamp > v2.timestamp;
}

bool moreThanSingerDES(SingerInfo v1, SingerInfo v2)
{
    return v1.pinyinSinger > v2.pinyinSinger;
}

int calculateSingerSize(int index, SingerInfo info)
{
    return index + info.musicinfos.size();
}

// 排序
void SingerListView::sortList(QList<SingerInfo> &singerInfos, const DataBaseService::ListSortType &sortType)
{
    switch (sortType) {
    case DataBaseService::SortByAddTimeASC: {
        std::sort(singerInfos.begin(), singerInfos.end(), moreThanTimestampASC);
        //qSort(singerInfos.begin(), singerInfos.end(), moreThanTimestampASC);
        break;
    }
    case DataBaseService::SortBySingerASC: {
        std::sort(singerInfos.begin(), singerInfos.end(), moreThanSingerASC);
        break;
    }
    case DataBaseService::SortByAddTimeDES: {
        std::sort(singerInfos.begin(), singerInfos.end(), moreThanTimestampDES);
        break;
    }
    case DataBaseService::SortBySingerDES: {
        std::sort(singerInfos.begin(), singerInfos.end(), moreThanSingerDES);
        break;
    }
    default:
        break;
    }
}

QString SingerListView::getHash() const
{
    return m_hash;
}
// 过去歌手数量
int SingerListView::getSingerCount()
{
    return singerModel->rowCount();
}

SingerListView::SingerListView(const QString &hash, QWidget *parent)
    : DListView(parent)
{
    setObjectName("SingerListView");
    m_hash = hash;
    singerModel = new SingerDataModel(0, 1, this);

    signerDelegate = new SingerDataDelegate(this);
    setModel(singerModel);
    setItemDelegate(signerDelegate);
    setViewportMargins(0, 0, 8, 0);

    setUniformItemSizes(true);

    setViewModeFlag(QListView::ListMode);
    setResizeMode(QListView::Adjust);
    setMovement(QListView::Static);
    setLayoutMode(QListView::Batched);
    setBatchSize(2000);
    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    setSelectionMode(QListView::SingleSelection);
    setSelectionBehavior(QAbstractItemView::SelectRows);

    connect(DataBaseService::getInstance(), &DataBaseService::signalCoverUpdate,
            this, &SingerListView::slotCoverUpdate);

    connect(DGuiApplicationHelper::instance(), &DGuiApplicationHelper::themeTypeChanged,
            this, &SingerListView::setThemeType);

    setThemeType(DGuiApplicationHelper::instance()->themeType());

    // 歌曲删除
    connect(DataBaseService::getInstance(), &DataBaseService::signalRmvSong,
            this, &SingerListView::slotRemoveSingleSong);
    // 刷新播放动态图
    connect(Player::getInstance(), &Player::signalUpdatePlayingIcon,
            this, &SingerListView::slotUpdatePlayingIcon);
    // 歌曲导入
    connect(DataBaseService::getInstance(), &DataBaseService::signalMusicAddOne,
            this, &SingerListView::slotAddSingleSong);
    // 跳转到播放的位置
    connect(CommonService::getInstance(), &CommonService::sigScrollToCurrentPosition,
            this, &SingerListView::slotScrollToCurrentPosition);
    // 刷新当前页面编码
    connect(CommonService::getInstance(), &CommonService::signalUpdateCodec,
            this, &SingerListView::slotUpdateCodec);
    // 删除歌曲
    connect(DataBaseService::getInstance(), &DataBaseService::sigRemoveSelectedSongs, this, &SingerListView::slotRemoveSelectedSongs, Qt::DirectConnection);
    if (CommonService::getInstance()->isTabletEnvironment()) {
        connect(Player::getInstance(), &Player::signalPlaybackStatusChanged,
                this, &SingerListView::slotPlaybackStatusChanged);

        // 横竖屏切换
        connect(CommonService::getInstance(), &CommonService::signalHScreen,
                this, &SingerListView::slotHScreen);
    }

#ifdef DTKWIDGET_CLASS_DSizeMode
    connect(DGuiApplicationHelper::instance(),&DGuiApplicationHelper::sizeModeChanged,this, &SingerListView::slotSizeModeChanged);
#endif
}

SingerListView::~SingerListView()
{
}

void SingerListView::setSingerListData(QList<SingerInfo> &&listinfo)
{
    setUpdatesEnabled(false);
    singerModel->clear();

    DataBaseService::ListSortType sortType = getSortType();
    this->setDataBySortType(listinfo, sortType);
    setUpdatesEnabled(true);
}

QList<SingerInfo> SingerListView::getSingerListData() const
{
    QList<SingerInfo> list;
    if (singerModel) {
        for (int i = 0; i < singerModel->rowCount(); i++) {
            QModelIndex idx = singerModel->index(i, 0, QModelIndex());
            SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();
            list.append(singerTmp);
        }
    }
    return list;
}

void SingerListView::resetSingerListDataByStr(const QString &searchWord)
{
    QList<SingerInfo> singerInfos = DataBaseService::getInstance()->allSingerInfos();
    DataBaseService::ListSortType sortType = getSortType();

    // 排序
    sortList(singerInfos, sortType);

    singerModel->clear();
    for (SingerInfo meta : singerInfos) {
        if (!CommonService::getInstance()->containsStr(searchWord, meta.singerName)) {
            continue;
        }
        QStandardItem *pItem = new QStandardItem;
        //设置icon
        bool iconExists = false;
        for (int i = 0; i < meta.musicinfos.values().size(); i++) {
            MediaMeta metaBind = meta.musicinfos.values().at(i);
            QString imagesDirPath = Global::cacheDir() + "/images/" + metaBind.hash + ".jpg";
            QFileInfo file(imagesDirPath);
            QIcon icon;
            if (file.exists()) {
                pItem->setIcon(QIcon(imagesDirPath));
                iconExists = true;
                break;
            }
        }
        if (!iconExists) {
            pItem->setIcon(m_defaultIcon);
        }
        singerModel->appendRow(pItem);
        auto row = singerModel->rowCount() - 1;
        QModelIndex idx = singerModel->index(row, 0, QModelIndex());
        QVariant singerval;
        singerval.setValue(meta);
        singerModel->setData(idx, singerval, Qt::UserRole);
    }
}

void SingerListView::resetSingerListDataBySongName(const QList<MediaMeta> &mediaMetas)
{
    QList<SingerInfo> singerInfos = DataBaseService::getInstance()->allSingerInfos();
    DataBaseService::ListSortType sortType = getSortType();

    // 排序
    sortList(singerInfos, sortType);

    singerModel->clear();
    for (SingerInfo singerInfo : singerInfos) {
//        static SingerInfo &tmpMeta = singerInfo;
//        QList<MediaMeta> mediaMetasTemp = mediaMetas;
//        bool ret = std::any_of(mediaMetasTemp.begin(), mediaMetasTemp.end(), [](MediaMeta mt) {
//            return CommonService::getInstance()->containsStr(mt.singer, tmpMeta.singerName);
//        });

        bool isSingerContainSong = false;
        for (int i = 0; i < mediaMetas.size(); i++) {
            MediaMeta meta = mediaMetas[i];
            if (CommonService::getInstance()->containsStr(meta.singer, singerInfo.singerName)) {
                isSingerContainSong = true;
                break;
            }
        }
        if (isSingerContainSong) {
            QStandardItem *pItem = new QStandardItem;
            //设置icon
            bool iconExists = false;
            for (int i = 0; i < singerInfo.musicinfos.values().size(); i++) {
                MediaMeta metaBind = singerInfo.musicinfos.values().at(i);
                QString imagesDirPath = Global::cacheDir() + "/images/" + metaBind.hash + ".jpg";
                QFileInfo file(imagesDirPath);
                QIcon icon;
                if (file.exists()) {
                    pItem->setIcon(QIcon(imagesDirPath));
                    iconExists = true;
                    break;
                }
            }
            if (!iconExists) {
                pItem->setIcon(m_defaultIcon);
            }
            singerModel->appendRow(pItem);
            auto row = singerModel->rowCount() - 1;
            QModelIndex idx = singerModel->index(row, 0, QModelIndex());
            QVariant singerval;
            singerval.setValue(singerInfo);
            singerModel->setData(idx, singerval, Qt::UserRole);
        }
    }
}

void SingerListView::resetSingerListDataByAlbum(const QList<AlbumInfo> &albumInfos)
{
    QList<SingerInfo> singerInfos = DataBaseService::getInstance()->allSingerInfos();
    DataBaseService::ListSortType sortType = getSortType();

    // 排序
    sortList(singerInfos, sortType);

    singerModel->clear();
    for (SingerInfo singerInfo : singerInfos) {
//        static SingerInfo &tmpMeta = singerInfo;
//        bool ret = std::any_of(albumInfos.begin(), albumInfos.end(), [](AlbumInfo mt) {return CommonService::getInstance()->containsStr(mt.singer, tmpMeta.singerName);});
        bool isSingerContainSong = false;
        for (int i = 0; i < albumInfos.size(); i++) {
            AlbumInfo albumInfo = albumInfos[i];
            if (CommonService::getInstance()->containsStr(albumInfo.singer, singerInfo.singerName)) {
                isSingerContainSong = true;
                break;
            }
        }
//        foreach (AlbumInfo albumInfo, albumInfos) {
//            if (CommonService::getInstance()->containsStr(albumInfo.singer, singerInfo.singerName)) {
//                isSingerContainSong = true;
//                break;
//            }
//        }
        if (isSingerContainSong) {
            QStandardItem *pItem = new QStandardItem;
            //设置icon
            bool iconExists = false;
            for (int i = 0; i < singerInfo.musicinfos.values().size(); i++) {
                MediaMeta metaBind = singerInfo.musicinfos.values().at(i);
                QString imagesDirPath = Global::cacheDir() + "/images/" + metaBind.hash + ".jpg";
                QFileInfo file(imagesDirPath);
                QIcon icon;
                if (file.exists()) {
                    pItem->setIcon(QIcon(imagesDirPath));
                    iconExists = true;
                    break;
                }
            }
            if (!iconExists) {
                pItem->setIcon(m_defaultIcon);
            }
            singerModel->appendRow(pItem);
            auto row = singerModel->rowCount() - 1;
            QModelIndex idx = singerModel->index(row, 0, QModelIndex());
            QVariant singerval;
            singerval.setValue(singerInfo);
            singerModel->setData(idx, singerval, Qt::UserRole);
        }
    }
}

int SingerListView::getMusicCount()
{
    QList<SingerInfo> singerInfos = getSingerListData();
    return std::accumulate(singerInfos.begin(), singerInfos.end(), 0, calculateSingerSize);
}

void SingerListView::setViewModeFlag(QListView::ViewMode mode)
{
    if (CommonService::getInstance()->isTabletEnvironment()) {
        if (mode == QListView::IconMode) {
            setIconSize(QSize(200, 200));
            setGridSize(QSize(-1, -1));
            // 去除底部间距
            setViewportMargins(30, -13, -35, 0);
            setSpacing(20);
            if (CommonService::getInstance()->isHScreen()) {
                setSpacing(20);
                setViewportMargins(30, -13, -35, 0);
            } else {
                setSpacing(33);
                setViewportMargins(23, -13, -35, 0);
            }
        } else {
            setIconSize(QSize(36, 36));
            setGridSize(QSize(-1, -1));
            // 修改间距
            setViewportMargins(10, 0, 10, 0);
            setSpacing(0);
        }
    } else {
        if (mode == QListView::IconMode) {
            //setIconSize(QSize(150, 150));
            setGridSize(QSize(-1, -1));

#ifdef DTKWIDGET_CLASS_DSizeMode
            if (DGuiApplicationHelper::instance()->sizeMode() == DGuiApplicationHelper::SizeMode::CompactMode) {
                setSpacing(15);
                setViewportMargins(-5, -13, -35, 0);
            } else
#endif
            {
                setSpacing(20);
                // 去除底部间距
                setViewportMargins(-10, -13, -35, 0);
            }
        } else {
            //setIconSize(QSize(36, 36));
            setGridSize(QSize(-1, -1));
            // 修改顶部间距
            setViewportMargins(0, 0, 8, 0);
            setSpacing(0);
        }
    }
    setViewMode(mode);
    m_viewModel = mode;
}

QListView::ViewMode SingerListView::getViewMode()
{
    return m_viewModel;
}

void SingerListView::setThemeType(int type)
{
    musicTheme = type;
}

int SingerListView::getThemeType() const
{
    return musicTheme;
}

QPixmap SingerListView::getPlayPixmap() const
{
    return playingPix;
}

QPixmap SingerListView::getPlayPixmap(bool isSelect)
{
    // 修改icon绘制方法为修改像素点颜色
    QColor color;
    if (isSelect) {
        color = QColor(Qt::white);
    } else {
        color = QColor(DGuiApplicationHelper::instance()->applicationPalette().highlight().color());
    }

    QImage playingImage = Player::getInstance()->playingIcon().pixmap(QSize(20, 18), QIcon::Active, QIcon::On).toImage();
    for (int i = 0; i < playingImage.width(); i++) {
        for (int j = 0; j < playingImage.height(); j++) {
            if (playingImage.pixelColor(i, j) != QColor(0, 0, 0, 0)) {
                playingImage.setPixelColor(i, j, color);
            }
        }
    }
    QPixmap playingPixmap = QPixmap::fromImage(playingImage);
//    update();
    return playingPixmap;
}

DataBaseService::ListSortType SingerListView::getSortType()
{
    DataBaseService::ListSortType type = static_cast<DataBaseService::ListSortType>
                                         (DataBaseService::getInstance()->getPlaylistSortType(m_hash));
    return type;
}

void SingerListView::setSortType(DataBaseService::ListSortType sortType)
{
    // 倒序
    switch (sortType) {
    case DataBaseService::SortByAddTime: {
        if (getSortType() == DataBaseService::SortByAddTimeASC) {
            sortType = DataBaseService::SortByAddTimeDES;
        } else {
            sortType = DataBaseService::SortByAddTimeASC;
        }
        break;
    }
    case DataBaseService::SortBySinger: {
        if (getSortType() == DataBaseService::SortBySingerASC) {
            sortType = DataBaseService::SortBySingerDES;
        } else {
            sortType = DataBaseService::SortBySingerASC;
        }
        break;
    }
    default:
        sortType = DataBaseService::SortByAddTimeASC;
        break;
    }

    DataBaseService::getInstance()->updatePlaylistSortType(sortType, m_hash);
    QList<SingerInfo> singerInfos = getSingerListData();
    this->setDataBySortType(singerInfos, sortType);
}

void SingerListView::setDataBySortType(QList<SingerInfo> &singerInfos, DataBaseService::ListSortType sortType)
{
    // 排序
    sortList(singerInfos, sortType);

    singerModel->clear();
    for (SingerInfo meta : singerInfos) {
        QStandardItem *pItem = new QStandardItem;
        //设置icon
        bool iconExists = false;
        for (int i = 0; i < meta.musicinfos.values().size(); i++) {
            MediaMeta metaBind = meta.musicinfos.values().at(i);
            QString imagesDirPath = Global::cacheDir() + "/images/" + metaBind.hash + ".jpg";
            QFileInfo file(imagesDirPath);
            QIcon icon;
            if (file.exists()) {
                pItem->setIcon(QIcon(imagesDirPath));
                iconExists = true;
                break;
            }
        }
        if (!iconExists) {
            pItem->setIcon(m_defaultIcon);
        }
        singerModel->appendRow(pItem);
        auto row = singerModel->rowCount() - 1;
        QModelIndex idx = singerModel->index(row, 0, QModelIndex());
        QVariant singerval;
        singerval.setValue(meta);
        singerModel->setData(idx, singerval, Qt::UserRole);
    }
}

void SingerListView::slotRemoveSingleSong(const QString &listHash, const QString &musicHash)
{
    if (listHash != "all") {
        return;
    }
    for (int i = 0; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();

        if (singerTmp.musicinfos.contains(musicHash)) {
            singerTmp.musicinfos.remove(musicHash);
            QVariant singerVal;
            singerVal.setValue(singerTmp);
            singerModel->setData(idx, singerVal, Qt::UserRole);
            // 如果该专辑内歌曲不存在了，则刷新页面
            if (singerTmp.musicinfos.size() == 0) {
                singerModel->removeRow(i);
            }
            break;
        }
    }
}

void SingerListView::slotScrollToCurrentPosition(const QString &songlistHash)
{
    qDebug() << __FUNCTION__ << songlistHash;
    // listmode情况下跳转到播放位置
    if (songlistHash == "artist" && this->viewMode() == QListView::ListMode) {
        int height = 0;
        QString currentMetaHash = Player::getInstance()->getActiveMeta().hash;
        for (int i = 0; i < singerModel->rowCount(); i++) {
            QModelIndex idx = singerModel->index(i, 0, QModelIndex());
            QSize size = signerDelegate->sizeHint(QStyleOptionViewItem(), idx);
            SingerInfo singerInfo = idx.data(Qt::UserRole).value<SingerInfo>();
            if (singerInfo.musicinfos.contains(currentMetaHash)) {
                this->verticalScrollBar()->setValue(height);
                break;
            }
            height += size.height();
        }
    }
}

void SingerListView::slotUpdatePlayingIcon()
{
    if (this->isVisible()) {
        this->update();
    }
}

void SingerListView::slotHScreen(bool isHScreen)
{
    if (this->viewMode() == QListView::IconMode) {
        if (isHScreen) {
            setSpacing(20);
            setViewportMargins(30, -13, -35, 0);
        } else {
            setSpacing(33);
            setViewportMargins(23, -13, -35, 0);
        }
    }
}

#ifdef DTKWIDGET_CLASS_DSizeMode
void SingerListView::slotSizeModeChanged(DGuiApplicationHelper::SizeMode sizeMode)
{
    if (m_viewModel != QListView::IconMode)
        return;

    if (sizeMode == DGuiApplicationHelper::SizeMode::CompactMode) {
        setViewportMargins(-5, -13, -35, 0);
        setSpacing(15);
    } else {
        setViewportMargins(-10, -13, -35, 0);
        setSpacing(20);
    }
}
#endif

void SingerListView::slotCoverUpdate(const MediaMeta &meta)
{
    for (int i = 0; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerInfo = idx.data(Qt::UserRole).value<SingerInfo>();

        if (singerInfo.musicinfos.contains(meta.hash)) {
            QStandardItem *item = dynamic_cast<QStandardItem *>(singerModel->item(i, 0));
            if (item == nullptr) {
                break;
            }
            QString imagesDirPath = Global::cacheDir() + "/images/" + meta.hash + ".jpg";
            QFileInfo file(imagesDirPath);
            QIcon icon;
            if (file.exists()) {
                item->setIcon(QIcon(imagesDirPath));
            } else {
                item->setIcon(m_defaultIcon);
            }
            break;
        }
    }
}

void SingerListView::slotUpdateCodec(const MediaMeta &meta)
{
    for (int i = 0; i < singerModel->rowCount(); i++) {
        SingerInfo tmpmeta = singerModel->index(i, 0).data(Qt::UserRole).value<SingerInfo>();
        auto tmpmetaMusicinfosKeys = tmpmeta.musicinfos.keys();
        for (int keysIndex = 0; keysIndex < tmpmetaMusicinfosKeys.size(); keysIndex++) {
            QString hashstr = tmpmetaMusicinfosKeys[keysIndex];
            if (meta.hash == hashstr) {
                tmpmeta.musicinfos[hashstr].codec = meta.codec;
                tmpmeta.musicinfos[hashstr].updateCodec(meta.codec.toUtf8());
                QVariant varmeta;
                varmeta.setValue(tmpmeta);
                singerModel->setData(singerModel->index(i, 0), varmeta, Qt::UserRole);
                return;
            }
        }
//        foreach (QString hashstr, tmpmeta.musicinfos.keys()) {
//            if (meta.hash == hashstr) {
//                tmpmeta.musicinfos[hashstr].codec = meta.codec;
//                tmpmeta.musicinfos[hashstr].updateCodec(meta.codec.toUtf8());
//                QVariant varmeta;
//                varmeta.setValue(tmpmeta);
//                singerModel->setData(singerModel->index(i, 0), varmeta, Qt::UserRole);
//                return;
//            }
//        }
    }
}

void SingerListView::slotAddSingleSong(const QString &listHash, const MediaMeta &addMeta)
{
    Q_UNUSED(listHash)
    // 有歌曲导入，刷新列表数据
    for (int i = 0; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();

        if (singerTmp.singerName == addMeta.singer) {
            if (!singerTmp.musicinfos.contains(addMeta.hash)) {
                singerTmp.musicinfos[addMeta.hash] = addMeta;
                QVariant albumval;
                albumval.setValue(singerTmp);
                singerModel->setData(idx, albumval, Qt::UserRole);
                break;
            }
        }
    }
}

void SingerListView::slotRemoveSelectedSongs(const QString &deleteHash, const QStringList &musicHashs, bool removeFromLocal)
{
    Q_UNUSED(removeFromLocal)
    QString curDeleteHash = deleteHash;
    if (curDeleteHash != m_hash || Player::getInstance()->getCurrentPlayListHash() != m_hash) {
        return;
    }
    if (musicHashs.size() == 0 || Player::getInstance()->getPlayList()->isEmpty()) {
        return;
    }
    QList<MediaMeta> *curPlayList = Player::getInstance()->getPlayList();
    // 歌单存在非歌手歌曲不处理
    QString firstSinger = curPlayList->first().singer;
    for (int i = 1; i < curPlayList->size(); i++) {
        if (curPlayList->at(i).singer != firstSinger) {
            return;
        }
    }
    // 标志准备删除的歌曲,找到当前正在播放的专辑index
    int playIndex = -1;
    for (int i = 0; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();
        // 更新是否删除状态
        for (MediaMeta meta : singerTmp.musicinfos.values()) {
            if (musicHashs.contains(meta.hash)) {
                singerTmp.musicinfos[meta.hash].toDelete = true;
            }
        }
        QVariant singerval;
        singerval.setValue(singerTmp);
        singerModel->setData(idx, singerval, Qt::UserRole);
    }
    for (int i = 0; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();
        if (singerTmp.musicinfos.contains(Player::getInstance()->getActiveMeta().hash)) {
            playIndex = i;

            QStringList delHashs = musicHashs;
            if (mapContainsList(singerTmp.musicinfos, delHashs)) {
                if (singerTmp.musicinfos.size() == musicHashs.size()) {
                    // 跳出，播放下一歌手
                    break;
                } else {
                    Player::getInstance()->playRmvMeta(musicHashs);
                    emit Player::getInstance()->signalPlayListChanged();
                    return;
                }
            }
            return;
        }
    }
    // 记录切换歌单之前播放状态
    Player::PlaybackStatus preStatue = Player::getInstance()->status();
    // 找到要播放的歌手,如果删除的是最后一个歌手的唯一一首歌，则从第一个播起
    if (playIndex == (singerModel->rowCount() - 1)) {
        playIndex = 0;
    }
    for (int i = playIndex; i < singerModel->rowCount(); i++) {
        QModelIndex idx = singerModel->index(i, 0, QModelIndex());
        SingerInfo singerTmp = idx.data(Qt::UserRole).value<SingerInfo>();
        // 查看专辑中除去要删除的还有没有剩余歌曲
        bool isExsit = false;
        QMap<QString, MediaMeta> musicinfosMap = singerTmp.musicinfos;
        for (QMap<QString, MediaMeta>::Iterator iterator = musicinfosMap.begin(); iterator != musicinfosMap.end(); iterator++) {
            if (!(*iterator).toDelete) {
                isExsit = true;
                break;
            }
        }
//        for (MediaMeta meta : singerTmp.musicinfos.values()) {
//            if (!meta.toDelete) {
//                isExsit = true;
//                break;
//            }
//        }
        if (isExsit) {
            // 当前歌手存在歌曲，移除要删除的歌曲并播放该歌手
            if (preStatue == Player::PlaybackStatus::Playing) {
                Player::getInstance()->playMeta(singerTmp.musicinfos.values().at(0));
            } else {
                Player::getInstance()->setActiveMeta(singerTmp.musicinfos.values().at(0));
            }
            Player::getInstance()->setPlayList(singerTmp.musicinfos.values());
            emit Player::getInstance()->signalPlayListChanged();
            break;
        } else {
            if (i == (singerModel->rowCount() - 1)) {
                break;
            }
            if (playIndex != 0 && i == (singerModel->rowCount() - 1)) {
                i = -1;
            }
        }
    }
}

void SingerListView::slotPlaybackStatusChanged(Player::PlaybackStatus statue)
{
    Q_UNUSED(statue)
    if (this->isVisible()) {
        this->update();
    }
}

void SingerListView::dragEnterEvent(QDragEnterEvent *event)
{
    auto t_formats = event->mimeData()->formats();
    qDebug() << t_formats;
    if (event->mimeData()->hasFormat("text/uri-list") || event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist")) {
        qDebug() << "acceptProposedAction" << event;
        event->setDropAction(Qt::CopyAction);
        event->acceptProposedAction();
    }
}

void SingerListView::dragMoveEvent(QDragMoveEvent *event)
{
    auto index = indexAt(event->pos());
    if (/*index.isValid() && */(event->mimeData()->hasFormat("text/uri-list")  || event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist"))) {
        qDebug() << "acceptProposedAction" << event;
        event->setDropAction(Qt::CopyAction);
        event->acceptProposedAction();
    } else {
        DListView::dragMoveEvent(event);
    }
}

void SingerListView::dropEvent(QDropEvent *event)
{
    if ((!event->mimeData()->hasFormat("text/uri-list") && !event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist"))) {
        return;
    }

    if (event->mimeData()->hasFormat("text/uri-list")) {
        auto urls = event->mimeData()->urls();
        QStringList localpaths;
        for (auto &url : urls) {
            localpaths << (url.isLocalFile() ? url.toLocalFile() : url.path());
        }

        if (!localpaths.isEmpty()) {
            DataBaseService::getInstance()->importMedias(m_hash, localpaths);
        }
    }

    DListView::dropEvent(event);
}

bool SingerListView::mapContainsList(QMap<QString, MediaMeta> metasMap, QStringList musicHashs)
{
    bool contain = false;
    for (QString hash : musicHashs) {
        if (metasMap.contains(hash)) {
            contain = true;
            break;
        }
    }
    return contain;
}









