// Тест SyncManager: каталог ошибок, busy-счётчик, валидация параметров
#include <QCoreApplication>
#include <QTimer>
#include <QEventLoop>
#include <cstdio>

#include "sync/SyncManager.h"

static int fail(const char *msg, const QString &detail = QString()) {
    std::fprintf(stderr, "FAIL: %s %s\n", msg, qPrintable(detail));
    return 1;
}

struct Spy {
    int count=0;
    bool lastOk=false;
    int lastCode=0;
    QString lastTitle;
    void connectTo(SyncManager *sm){
        QObject::connect(sm, &SyncManager::connectionResult, [this](int, bool ok, int code, const QString& t, const QString&, const QString&){
            count++; lastOk=ok; lastCode=code; lastTitle=t;
        });
    }
    void reset(){ count=0; lastOk=false; lastCode=0; lastTitle.clear(); }
};

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    SyncManager sm;

    // error catalog
    if (sm.errorTitle(SyncManager::Ok) != "OK") return fail("errorTitle Ok");
    if (sm.errorTitle(SyncManager::Unauthorized).isEmpty()) return fail("errorTitle 401 empty");
    if (sm.errorHint(SyncManager::Unauthorized).isEmpty()) return fail("errorHint 401 empty");
    if (sm.errorHint(SyncManager::Timeout).isEmpty()) return fail("hint timeout");
    if (!sm.errorTitle(999).contains("999")) return fail("unknown error title");

    // busy initial
    if (sm.busy()) return fail("initial busy should be false");

    // testConnection with empty token should immediately finish with Unauthorized without network
    {
        Spy spy; spy.connectTo(&sm);
        sm.testConnection(SyncManager::GitHub, "https://api.github.com", "", "");
        // need to process events for direct connection? finish emits synchronously, but signal is direct, so count should be 1 immediately
        // However finish is synchronous, so after call count should be 1
        if (spy.count != 1) return fail("empty token spy count", QString::number(spy.count));
        if (spy.lastOk) return fail("empty token should not ok");
        if (spy.lastCode != SyncManager::Unauthorized) return fail("empty token code", QString::number(spy.lastCode));
        if (sm.busy()) return fail("busy after empty token");
    }

    // Need new manager for isolated spy because previous connection stays
    {
        SyncManager sm2;
        Spy spy; spy.connectTo(&sm2);
        sm2.testConnection(99, "https://example.com", "", "token123");
        if (spy.count!=1) return fail("invalid provider spy", QString::number(spy.count));
        if (spy.lastCode != SyncManager::NetworkError) return fail("invalid provider code", QString::number(spy.lastCode));
    }

    // invalid URL for WebDAV
    {
        SyncManager sm2;
        Spy spy; spy.connectTo(&sm2);
        sm2.testConnection(SyncManager::WebDav, "not-a-url", "user", "pass");
        if (spy.count!=1) return fail("webdav invalid url spy count", QString::number(spy.count));
        if (spy.lastCode != SyncManager::NetworkError) return fail("webdav invalid url code", QString::number(spy.lastCode));
    }

    // Check busy counter with actual network request (will timeout or fail, but busy should be managed)
    {
        SyncManager sm2;
        int busyChangedCount=0;
        QObject::connect(&sm2, &SyncManager::busyChanged, [&](){ busyChangedCount++; });
        sm2.testConnection(SyncManager::Syncthing, "http://127.0.0.1:1", "", "fake");
        if (!sm2.busy()) return fail("busy should be true after request");
        QEventLoop loop;
        QTimer timer;
        timer.setSingleShot(true);
        QObject::connect(&sm2, &SyncManager::connectionResult, &loop, &QEventLoop::quit);
        QObject::connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
        timer.start(3000);
        loop.exec();
        if (sm2.busy()) return fail("busy should be false after reply");
        if (busyChangedCount < 1) return fail("busyChanged not emitted");
    }

    // Test busy counter with two parallel requests
    {
        SyncManager sm2;
        sm2.testConnection(SyncManager::GitHub, "https://api.github.com", "", "tok1");
        sm2.testConnection(SyncManager::GitLab, "https://gitlab.com", "", "tok2");
        if (!sm2.busy()) return fail("busy after two requests");
        QEventLoop loop;
        int count = 0;
        QObject::connect(&sm2, &SyncManager::connectionResult, &loop, [&](int, bool, int, const QString&, const QString&, const QString&){
            count++;
            if (count>=2) loop.quit();
        });
        QTimer::singleShot(4000, &loop, &QEventLoop::quit);
        loop.exec();
        QEventLoop loop2;
        QTimer::singleShot(1000, &loop2, &QEventLoop::quit);
        loop2.exec();
        if (count==0) return fail("no parallel results");
    }

    std::printf("SYNC TEST OK\n");
    return 0;
}