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

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

#include <QFileInfo>
#include <QDir>

using namespace std;
using 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 - Launching Syncthing ..." << 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());
        }
    }

    // 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
    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";
        cerr << "\n - Syncthing stdout during the testrun:\n" << m_syncthingProcess.readAllStandardOutput().data();
        cerr << "\n - Syncthing stderr during the testrun:\n" << m_syncthingProcess.readAllStandardError().data();
    }
}