#include "projectview.h"

#include <QInputDialog>
#include <QMenu>
#include <QMessageBox>

Components::ProjectView::ProjectView(Project::ProjectManager *src, QWidget *parent)
    : QTreeView(parent), files_mgr(src)
{
    setModel(files_mgr->model());
    setHeaderHidden(true);
    setIconSize(QSize(24, 24));

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

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

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

    auto root = files_mgr->model()->item(0);
    auto item = files_mgr->model()->itemFromIndex(curr);
    QList<QString> path;
    while (item != root){
        path.insert(0, item->text());
        item = item->parent();
    }

    auto xinfo = files_mgr->queryWith(path);
    if(xinfo.isFile() && xinfo.exists()){
        emit this->activeDocument(xinfo.absoluteFilePath(), curr.data().toString());
    }
}

void Components::ProjectView::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();
        }

        files_mgr->newPath(names);
    });

    popup.addSeparator();
    auto newm = popup.addMenu("新建文件");
    newm->addAction("新建章节", [this, &idx_it](){ alloc_file(idx_it, "txt"); });
    newm->addSeparator();
    newm->addAction("新建脉络", [this, &idx_it](){ alloc_file(idx_it, "storychain"); });
    newm->addAction("新建单元", [this, &idx_it](){ alloc_file(idx_it, "storyunit"); });
    newm->addAction("新建故事", [this, &idx_it](){ alloc_file(idx_it, "storyboard"); });
    newm->addAction("新建行文", [this, &idx_it](){ alloc_file(idx_it, "storyvolume"); });
    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 = files_mgr->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](){
        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 root = files_mgr->model()->item(0);
        auto seli = files_mgr->model()->itemFromIndex(idx_it);
        QList<QString> paths;
        while (root != seli) {
            paths.insert(0, seli->text());
            seli = seli->parent();
        }

        this->files_mgr->deletePath(paths);
    });


    popup.exec(mapToGlobal(pos));
}

void Components::ProjectView::alloc_file(const QModelIndex &idx_it, const QString &suffix)
{
    auto name = QInputDialog::getText(this, "输入章节名称", "名称：");
    if(name == "")
        return;

    auto root = files_mgr->model()->item(0);
    auto seli = files_mgr->model()->itemFromIndex(idx_it);
    QList<QString> paths;
    while (root != seli) {
        paths.insert(0, seli->text());
        seli = seli->parent();
    }

    auto indi = this->files_mgr->createFile(paths, name, suffix);
    switch (indi) {
    case -1:
        QMessageBox::critical(this, "系统错误", "传入的指定路径无效");
        return;
    case -2:
        QMessageBox::critical(this, "系统错误", "在文件下建立文件");
        return;
    }
}