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/*
* SPDX-FileCopyrightText: 2015 David Edmundson <david@davidedmundson.co.uk>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
*/
#include "statisticsprovider.h"
#include <QDBusArgument>
#include <QDBusConnection>
#include <QDBusInterface>
#include <QDBusMessage>
#include <QDBusMetaType> // qDBusRegisterMetaType
#include <QDBusPendingReply>
#include <QDebug>
const QDBusArgument &operator<<(QDBusArgument &argument, const HistoryReply &data)
{
argument.beginStructure();
argument << data.time << data.value << data.charging;
argument.endStructure();
return argument;
}
const QDBusArgument &operator>>(const QDBusArgument &arg, HistoryReply &attrs)
{
arg.beginStructure();
arg >> attrs.time >> attrs.value >> attrs.charging;
arg.endStructure();
return arg;
}
StatisticsProvider::StatisticsProvider(QObject *parent)
: QObject(parent)
{
m_type = StatisticsProvider::ChargeType;
m_duration = 120;
qDBusRegisterMetaType<HistoryReply>();
qDBusRegisterMetaType<QList<HistoryReply>>();
}
void StatisticsProvider::setDevice(const QString &device)
{
if (device == m_device) {
return;
}
m_device = device;
Q_EMIT deviceChanged();
load();
}
void StatisticsProvider::setDuration(uint duration)
{
if (duration == m_duration) {
return;
}
m_duration = duration;
Q_EMIT durationChanged();
load();
}
void StatisticsProvider::setType(StatisticsProvider::HistoryType type)
{
if (m_type == type) {
return;
}
m_type = type;
Q_EMIT typeChanged();
load();
}
void StatisticsProvider::classBegin()
{
}
void StatisticsProvider::componentComplete()
{
m_isComplete = true;
load();
}
QVariantList StatisticsProvider::asPoints() const
{
QVariantList points;
points.reserve(m_values.count());
for (const HistoryReply &h : m_values) {
points.append(QPointF(h.time, h.value));
}
if (!points.isEmpty()) {
points.takeLast();
}
return points;
}
int StatisticsProvider::count() const
{
return m_values.count();
}
int StatisticsProvider::firstDataPointTime() const
{
if (m_values.isEmpty()) {
return 0;
}
return m_values.first().time;
}
int StatisticsProvider::lastDataPointTime() const
{
if (m_values.isEmpty()) {
return 0;
}
return m_values.last().time;
}
int StatisticsProvider::largestValue() const
{
if (m_values.isEmpty()) {
return 0;
}
int max = 0; // TODO std::max or something?
for (auto it = m_values.constBegin(), end = m_values.constEnd(); it != end; ++it) {
if ((*it).value > max) {
max = (*it).value;
}
}
return max;
}
void StatisticsProvider::refresh()
{
load();
}
void StatisticsProvider::load()
{
if (!m_isComplete || m_device.isEmpty()) {
return;
}
auto msg = QDBusMessage::createMethodCall(QStringLiteral("org.freedesktop.UPower"),
m_device,
QStringLiteral("org.freedesktop.UPower.Device"),
QStringLiteral("GetHistory"));
if (m_type == RateType) {
msg << QLatin1String("rate");
} else { // m_type must = ChargeType
msg << QLatin1String("charge");
}
uint resolution = 100;
msg << m_duration << resolution;
QDBusPendingReply<QList<HistoryReply>> reply = QDBusConnection::systemBus().asyncCall(msg);
auto *watcher = new QDBusPendingCallWatcher(reply, this);
QObject::connect(watcher, &QDBusPendingCallWatcher::finished, this, [this](QDBusPendingCallWatcher *watcher) {
QDBusPendingReply<QList<HistoryReply>> reply = *watcher;
watcher->deleteLater();
m_values.clear();
if (reply.isError()) {
qWarning() << "Failed to get device history from UPower" << reply.error().message();
return;
}
for (const HistoryReply &r : reply.value()) {
if (r.value > 0) { // we get back some values which contain no value, possibly to indicate if charging changes, ignore them
m_values.prepend(r);
}
}
Q_EMIT dataChanged();
});
}
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