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#include "talkgroupdatabase.hh"
#include <QStandardPaths>
#include <QFileInfo>
#include "logger.hh"
#include <QJsonDocument>
#include <QJsonObject>
#include <QNetworkReply>
#include <QDir>
/* ********************************************************************************************* *
* Implementation of TalkGroupDatabase::TalkGroup
* ********************************************************************************************* */
TalkGroupDatabase::TalkGroup::TalkGroup()
: id(0), name()
{
// pass...
}
TalkGroupDatabase::TalkGroup::TalkGroup(const QString &name, unsigned number)
{
this->id = number;
this->name = name;
}
/* ********************************************************************************************* *
* Implementation of TalkGroupDatabase
* ********************************************************************************************* */
TalkGroupDatabase::TalkGroupDatabase(unsigned updatePeriodDays, QObject *parent)
: QAbstractTableModel(parent), _talkgroups(), _network()
{
connect(&_network, SIGNAL(finished(QNetworkReply*)),
this, SLOT(downloadFinished(QNetworkReply*)));
if ((! load()) || (updatePeriodDays < dbAge()))
download();
}
qint64
TalkGroupDatabase::count() const {
return _talkgroups.count();
}
unsigned
TalkGroupDatabase::dbAge() const {
QString path = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) + "/talkgroups.json";
QFileInfo info(path);
if (! info.exists())
return -1;
return info.lastModified().daysTo(QDateTime::currentDateTime());
}
TalkGroupDatabase::TalkGroup
TalkGroupDatabase::talkgroup(int index) const {
if ((0 > index) || (index >= count()))
return TalkGroup();
return _talkgroups[index];
}
void
TalkGroupDatabase::download() {
QUrl url("https://api.brandmeister.network/v2/talkgroup/");
QNetworkRequest request(url);
_network.get(request);
}
void
TalkGroupDatabase::downloadFinished(QNetworkReply *reply) {
if (reply->error()) {
QString msg = QString("Cannot download user database: %1").arg(reply->errorString());
logError() << msg;
emit error(msg);
return;
}
QString path = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
QFile file(path+"/talkgroups.json");
QDir directory;
if ((! directory.exists(path)) && (!directory.mkpath(path))) {
QString msg = QString("Cannot create path '%1'.").arg(path);
logError() << msg;
emit error(msg);
return;
}
if (! file.open(QIODevice::WriteOnly)) {
QString msg = QString("Cannot save user database at '%1'.").arg(path+"/talkgroups.json");
logError() << msg;
emit error(msg);
return;
}
file.write(reply->readAll());
file.flush();
file.close();
load();
reply->deleteLater();
}
bool
TalkGroupDatabase::load() {
QString path = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
return load(path+"/talkgroups.json");
}
bool
TalkGroupDatabase::load(const QString &filename) {
QFile file(filename);
if (! file.open(QIODevice::ReadOnly)) {
QString msg = QString("Cannot open talk group list '%1': ").arg(filename).arg(file.errorString());
logError() << msg;
emit error(msg);
return false;
}
QByteArray data = file.readAll();
file.close();
QJsonDocument doc = QJsonDocument::fromJson(data);
if (! doc.isObject()) {
QString msg = "Failed to load talk groups: JSON document is not an object!";
logError() << msg;
emit error(msg);
return false;
}
beginResetModel();
QJsonObject tgs = doc.object();
_talkgroups.clear();
_talkgroups.reserve(tgs.count());
for (QJsonObject::const_iterator tg = tgs.begin(); tg!=tgs.end(); tg++) {
_talkgroups.append(TalkGroup(tg.value().toString(), tg.key().toUInt()));
}
// Sort repeater w.r.t. their IDs
std::stable_sort(_talkgroups.begin(), _talkgroups.end(),
[](const TalkGroup &a, const TalkGroup &b){ return a.id < b.id; });
// Done.
endResetModel();
logDebug() << "Loaded talk group database with " << _talkgroups.size()
<< " entries from " << filename << ".";
emit loaded();
return true;
}
int
TalkGroupDatabase::rowCount(const QModelIndex &parent) const {
Q_UNUSED(parent)
return _talkgroups.count();
}
int
TalkGroupDatabase::columnCount(const QModelIndex &parent) const {
Q_UNUSED(parent)
return 2;
}
QVariant
TalkGroupDatabase::data(const QModelIndex &index, int role) const {
if ((Qt::EditRole != role) && ((Qt::DisplayRole != role)))
return QVariant();
if (index.row() >= _talkgroups.size())
return QVariant();
if (0 == index.column()) {
// Call
if (Qt::DisplayRole == role) {
return tr("%1 (%2)").arg(_talkgroups[index.row()].name).arg(_talkgroups[index.row()].name);
} else {
return _talkgroups[index.row()].name;
}
} else if (1 == index.column()) {
// ID
return _talkgroups[index.row()].id;
}
return QVariant();
}
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