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/*
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version
  2 of the License, or (at your option) any later version.
*/

#include <QDir>
#include <QDateTime>
#include <QFile>

#include <sys/stat.h>

#include "smdirmodel.h"
#include "smdirwatcher.h"
#include "smtreeitem.h"
#include "helper.h"

SmDirModel::SmDirModel(const QStringList &headers, QObject *parent) : SmTreeModel(headers, parent), mHeaders(headers){
    mWatch = new SmDirWatcher(this);
}

SmDirModel::~SmDirModel(){
    delete mWatch;
}

QVariant SmDirModel::data(const QModelIndex &index, int role) const{
    if(!index.isValid()){
        return QVariant();
    }
    SmTreeItem *i = itemAt(index);
    switch (role){
        case NameRole:
            return i->data(Name);
        case SizeRole:
            return i->data(Size);
        case TypeRole:
            return i->data(Type);
        case CreatedRole:
            return i->data(Created);
        case Md5sumRole:
            return i->data(Md5sum);
        case DurationRole:
            return i->data(Duration);
        case BitrateRole:
            return i->data(Bitrate);
        case FullPathRole:
            return i->data(FullPath);
        default:
            return SmTreeModel::data(index, role);
    }
}

bool SmDirModel::setData(const QModelIndex &index, const QVariant &value, int role){
    if(!index.isValid()){
        return false;
    }
    if(role == Qt::EditRole && index.column() == Name){
        QString newName = value.toString();
        if(newName.contains(QDir::separator())){
            return false;
        }
        SmTreeItem *i = itemAt(index);
        QString old = i->data(FullPath).toString();
        QString dir = fileInfo(index).absolutePath();
        QString newPath = QString("%1/%2").arg(dir).arg(newName);
        QFile::rename(old, newPath);
        return true;
    }
    return false;
}

bool SmDirModel::isDir(const QModelIndex &idx) const {
    if(!idx.isValid()){
        return false;
    }
    SmTreeItem *i = itemAt(idx);
    QFileInfo fi(i->data(FullPath).toString());
    return fi.isDir();
}

QFileInfo SmDirModel::fileInfo(const QModelIndex &idx) const {
    if(!idx.isValid()){
        return QFileInfo();
    }
    SmTreeItem *i = itemAt(idx);
    return QFileInfo(i->data(FullPath).toString());
}

void SmDirModel::setDir(const QString &dir){
    QFileInfo fi(dir);
    if(!fi.isDir()){
        return;
    }
    mCur = dir;
    populate();
    mWatch->setDir(dir);
}

void SmDirModel::populate(){
    SmTreeItem *root = new SmTreeItem(mHeaders.size());
    QDir d = QDir(mCur);
    foreach(QFileInfo fi, d.entryInfoList()){
        if(fi.fileName() == "."){
            continue;
        }
        QList<QVariant> data = fileData(fi);
        SmTreeItem *n = new SmTreeItem(data, root);
        root->appendChild(n);
    }
    setRoot(root);
}

const QList<QVariant> SmDirModel::fileData(const QFileInfo &fi) const{
    QList<QVariant> data;
    data << fi.fileName() << fi.size();
    QString mime = Helper::mimeType(fi.absoluteFilePath());
    data << mime;
    data << fi.lastModified();
    QList<QVariant> si = QList<QVariant>() << QVariant() << QVariant();
    if(mime.startsWith("video")){
        si = Helper::duration(fi.absoluteFilePath());
    }
    data << Helper::md5Sum(fi.absoluteFilePath());
    data << si << fi.absoluteFilePath();
    return data;
}