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#include "filevalidator.h"
#include <QFileInfo>
#include <QMimeType>
#include <QMimeDatabase>
using namespace CuteEntityManager;
FileValidator::FileValidator() : Validator() {

}

/**
* @brief FileValidator::validateParam
* @param value must be the absolute FilePath
* @param param
* @return
*/
ErrorMsg FileValidator::validateParam(QVariant value, Param param) const {
QString fileName = value.toString();
if (!fileName.isEmpty()) {
QFileInfo file = QFileInfo(value.toString());
if (param.getName() == "mimeTypes") {
return this->validateMIMEType(file, param);
} else if (param.getName() == "extensions") {
return this->validateExtension(file, param);
} else if (param.getName() == "minSize"
&& file.size() < param.getValue().toLongLong()) {
return ErrorMsg(param.getName(),
"The file <property> is too small. Its size cannot be smaller than " +
param.getValue().toString() + " bytes.");

} else if (param.getName() == "maxSize") {
return ErrorMsg(param.getName(),
"The file <property> is too big. Its size cannot exceed " +
param.getValue().toString() + " bytes.");
}
}
return ErrorMsg();
}

ErrorMsg FileValidator::validateMIMEType(const QFileInfo &file,
const Param &param) const {
QMimeDatabase mimeDatabase;
QMimeType mimeType = mimeDatabase.mimeTypeForFile(file);
if (param.getValue().canConvert<QStringList>()) {
QStringList list = param.getValue().toStringList();
for (int i = 0; i < list.size(); ++i) {
if (mimeType.inherits(list.at(i))) {
return ErrorMsg();
}
}
return ErrorMsg(param.getName(),
"Only files with these MIME types are allowed: " + list.join(", ") + ".");
} else {
if (!mimeType.inherits(param.getValue().toString())) {
return ErrorMsg(param.getName(),
"Only files with this MIME type are allowed: " +
param.getValue().toString() + ".");
}
}
return ErrorMsg();
}

ErrorMsg FileValidator::validateExtension(const QFileInfo &file,
const Param &param) const {
if (param.getValue().canConvert<QStringList>()) {
QStringList list = param.getValue().toStringList();
for (int i = 0; i < list.size(); ++i) {
if (file.completeSuffix().contains(list.at(i))) {
return ErrorMsg();
}
}
return ErrorMsg(param.getName(),
"Only files with these extension types are allowed: " + list.join(", "));
} else {
if (!file.completeSuffix().contains(param.getValue().toString())) {
return ErrorMsg(param.getName(),
"Only files with this extension type are allowed: " +
param.getValue().toString() + ".");
}
}
return ErrorMsg();
}

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