#include "vcontrol_project.h"

#include <QInputDialog>
#include <QMenu>
#include <QMessageBox>
#include <QRandomGenerator>
#include <QVBoxLayout>

Components::VisiableProjectController::VisiableProjectController(Core::AppCore *src, Project::ProjectManager *project, QWidget *parent)
    : QTreeView(parent), rtcore(src), pjtins(project)
{
    setModel(pjtins->model());
    setHeaderHidden(true);
    setIconSize(QSize(24, 24));

    // 右键菜单
    setContextMenuPolicy(Qt::CustomContextMenu);
    connect(this,   &QWidget::customContextMenuRequested,   this,   &VisiableProjectController::contexMenuPopup);

    // 双击打开
    connect(this,   &QTreeView::doubleClicked, this,    &VisiableProjectController::explicit_active_document);
}

void Components::VisiableProjectController::explicit_active_document(const QModelIndex &curr)
{
    if(!curr.isValid())
        return;

    auto info = pjtins->queryInfo(curr);
    if(info.isFile())
        emit this->activeDocument(info.canonicalFilePath(), curr.data().toString());
}

void Components::VisiableProjectController::contexMenuPopup(const QPoint &pos)
{
    auto idx_it = indexAt(pos);
    if(!idx_it.isValid())
        return;

    QMenu popup;
    auto npath = popup.addAction("新建路径");
    connect(npath,  &QAction::triggered,    [this](){
        auto packages = QInputDialog::getText(this, "输入包路径名称", "名称A#名称B#名称C");
        if(packages == "")
            return;

        QList<QString> names;
        QRegExp exp("([^#]+)");
        auto idx=0;
        while ((idx = exp.indexIn(packages, idx)) != -1) {
            names << exp.capturedTexts()[1];
            idx += names.last().length();
        }

        pjtins->newPackage(names);
    });

    popup.addSeparator();
    auto newm = popup.addMenu("新建文件");
    newm->addAction("新建章节", [this, &idx_it](){ alloc_file(idx_it, "章节", "txt"); });
    newm->addSeparator();
    newm->addAction("新建脉络", [this, &idx_it](){ alloc_file(idx_it, "脉络", "storychain"); });
    newm->addAction("新建单元", [this, &idx_it](){ alloc_file(idx_it, "单元", "storyunit"); });
    newm->addAction("新建故事", [this, &idx_it](){ alloc_file(idx_it, "故事", "storyboard"); });
    newm->addAction("新建行文", [this, &idx_it](){ alloc_file(idx_it, "行文", "storyvolume"); });
    newm->addAction("新建概念", [this, &idx_it](){ alloc_file(idx_it, "概念", "storyconcept"); });
    popup.addSeparator();
    popup.addAction("修改名称", [this, &idx_it](){
        if(!idx_it.isValid())
            return;

        auto name = QInputDialog::getText(this, "输入名称", "节点名称");
        if(name == "")
            return;

        auto item = pjtins->model()->itemFromIndex(idx_it);
        auto pnode = item->parent();
        if(pnode == nullptr){
            item->setText(name);
        }
        else
        {
            for(auto idx=0; idx<pnode->rowCount(); ++idx)
                if(pnode->child(idx)->text() == name) {
                    QMessageBox::critical(this, "系统提示", "发现重名节点");
                    return;
                }
            item->setText(name);
        }
    });
    popup.addSeparator();
    popup.addAction("删除节点与文件", [this, &idx_it](){
        this->remove_node_tree(idx_it);
    });

    auto item = this->pjtins->model()->itemFromIndex(idx_it);
    if(item->parent() == nullptr){
        popup.addSeparator();
        popup.addAction("项目配置", this, &VisiableProjectController::project_configration);
    }


    popup.exec(mapToGlobal(pos));
}

QRandomGenerator gen_x;
void Components::VisiableProjectController::alloc_file(const QModelIndex &idx_it, const QString &type, const QString &suffix)
{
    // 输入节点名称
    auto name = QInputDialog::getText(this, "输入" + type + "名称", type + "名称：");
    if(name == "")
        return;

    // 通过节点路径，获取放置目标文件的文件夹fileinfo
    auto target_info = pjtins->queryInfo(idx_it);
    QDir target_dir;
    if(target_info.isFile())
        target_dir = target_info.absoluteDir();
    else
        target_dir = QDir(target_info.absoluteFilePath());

    // 禁止重名
    QString new_name = "";
    do {
        new_name = QString("contentfile_%1.%2").arg(gen_x.generate64()).arg(suffix);
    }while (target_dir.exists(new_name));

    auto relative_file =  target_dir.relativeFilePath(new_name);
    auto absolute_file = target_dir.absoluteFilePath(new_name);
    QFile xfile(absolute_file);
    if(!xfile.open(QIODevice::WriteOnly))
        throw new std::exception(QString("无法创建指定文件：" + absolute_file).toLocal8Bit());

    pjtins->signFile(idx_it, name, relative_file);
    emit this->activeDocument(absolute_file, name);
}

void Components::VisiableProjectController::project_configration()
{
    QDialog dia(this);
    auto layout = new QVBoxLayout(&dia);
    auto tab = new QTabWidget(&dia);
    tab->setTabPosition(QTabWidget::West);
    layout->addWidget(tab);

    auto extions = rtcore->extensions();
    auto project = pjtins;
    for(auto &ext : extions){
//        auto widget = ext->getNewPanel(project->configraions());
//        if(widget)
//            tab->addTab(widget, ext->extensionName());
    }

    dia.exec();
}

void Components::VisiableProjectController::remove_node_tree(const QModelIndex &idx_it)
{
    if(!idx_it.isValid())
    {
        QMessageBox::critical(this, "系统提示", "指定的路径无效");
        return;
    }

    auto btn = QMessageBox::warning(this, "系统提示",
                                    "删除操作涉及文件变更，无法找回，请慎重对待!\n"
                                    "是否坚持删除指定节点以及包含的所有文件？",
                                    QMessageBox::Yes|QMessageBox::No);
    if(btn == QMessageBox::No)
        return;

    auto file_list = pjtins->filesGather(idx_it);
    emit this->aboutToBoDelete(file_list);

    this->pjtins->deleteTarget(idx_it);
}

QList<QStandardItem *> Components::VisiableProjectController::nodes_contained(QStandardItem *root)
{
    QList<QStandardItem *> coll;
    coll << root;

    for(auto idx=0; idx<root->rowCount(); ++idx)
    {
        coll << root->child(idx);
        coll.append(nodes_contained(root->child(idx)));
    }

    return coll;
}