#include "./syncthingtestinstance.h"
#include "./helper.h"

#include <c++utilities/conversion/conversionexception.h>
#include <c++utilities/conversion/stringconversion.h>
#include <c++utilities/tests/testutils.h>

#include <QDir>
#include <QFileInfo>

using namespace std;
using namespace ConversionUtilities;

namespace TestUtilities {

static int dummy1 = 0;
static char *dummy2;

SyncthingTestInstance::SyncthingTestInstance()
    : m_apiKey(QStringLiteral("syncthingtestinstance"))
    , m_app(dummy1, &dummy2)
{
}

/*!
 * \brief Starts the Syncthing test instance.
 */
void SyncthingTestInstance::start()
{
    cerr << "\n - Setup configuration for Syncthing tests ..." << endl;

    // set timeout factor for helper
    const QByteArray timeoutFactorEnv(qgetenv("SYNCTHING_TEST_TIMEOUT_FACTOR"));
    if (!timeoutFactorEnv.isEmpty()) {
        try {
            timeoutFactor = stringToNumber<double>(string(timeoutFactorEnv.data()));
            cerr << " - Using timeout factor " << timeoutFactor << endl;
        } catch (const ConversionException &) {
            cerr << " - Specified SYNCTHING_TEST_TIMEOUT_FACTOR \"" << timeoutFactorEnv.data() << "\" is no valid double and hence ignored" << endl;
        }
    }

    // setup st config
    const string configFilePath = workingCopyPath("testconfig/config.xml");
    if (configFilePath.empty()) {
        throw runtime_error("Unable to setup Syncthing config directory.");
    }
    const QFileInfo configFile(QString::fromLocal8Bit(configFilePath.data()));
    // clean config dir
    const QDir configDir(configFile.dir());
    for (QFileInfo &configEntry : configDir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot)) {
        if (configEntry.isDir()) {
            QDir(configEntry.absoluteFilePath()).removeRecursively();
        } else if (configEntry.fileName() != QStringLiteral("config.xml")) {
            QFile::remove(configEntry.absoluteFilePath());
        }
    }

    // ensure dirs exist
    const QDir parentDir(QStringLiteral("/tmp/some/path"));
    parentDir.mkpath(QStringLiteral("1"));
    parentDir.mkpath(QStringLiteral("2"));

    // determine st path
    const QByteArray syncthingPathFromEnv(qgetenv("SYNCTHING_PATH"));
    const QString syncthingPath(syncthingPathFromEnv.isEmpty() ? QStringLiteral("syncthing") : QString::fromLocal8Bit(syncthingPathFromEnv));

    // determine st port
    const int syncthingPortFromEnv(qEnvironmentVariableIntValue("SYNCTHING_PORT"));
    m_syncthingPort = !syncthingPortFromEnv ? QStringLiteral("4001") : QString::number(syncthingPortFromEnv);

    // start st
    cerr << "\n - Launching Syncthing ..." << endl;
    QStringList args;
    args.reserve(2);
    args << QStringLiteral("-gui-address=http://localhost:") + m_syncthingPort;
    args << QStringLiteral("-gui-apikey=") + m_apiKey;
    args << QStringLiteral("-home=") + configFile.absolutePath();
    args << QStringLiteral("-no-browser");
    args << QStringLiteral("-verbose");
    m_syncthingProcess.start(syncthingPath, args);
}

/*!
 * \brief Terminates Syncthing and prints stdout/stderr from Syncthing.
 */
void SyncthingTestInstance::stop()
{
    if (m_syncthingProcess.state() == QProcess::Running) {
        cerr << "\n - Waiting for Syncthing to terminate ..." << endl;
        m_syncthingProcess.terminate();
        m_syncthingProcess.waitForFinished();
    }
    if (m_syncthingProcess.isOpen()) {
        cerr << "\n - Syncthing terminated with exit code " << m_syncthingProcess.exitCode() << ".\n";
        const auto stdOut(m_syncthingProcess.readAllStandardOutput());
        if (!stdOut.isEmpty()) {
            cerr << "\n - Syncthing stdout during the testrun:\n" << stdOut.data();
        }
        const auto stdErr(m_syncthingProcess.readAllStandardError());
        if (!stdErr.isEmpty()) {
            cerr << "\n - Syncthing stderr during the testrun:\n" << stdErr.data();
        }
    }
}
} // namespace TestUtilities