#include "imapsynchronizer.h"
#include <QDebug>
#include <cstdlib>

ImapSynchronizer::ImapSynchronizer(QObject* parent)
    : Synchronizer(parent)
{
}

bool ImapSynchronizer::initialize(const Account& account)
{
    Q_UNUSED(account);
    qDebug() << "IMAP Synchronizer initialize (stub)";
    m_connected = true; // pretend success
    
    // Publish AccountConnectedEvent
    WinoMail::Events::AccountConnectedEvent event;
    event.eventId = generateEventId();
    event.timestamp = QDateTime::currentDateTimeUtc();
    event.accountId = account.id();
    event.provider = "imap";
    PUBLISH(event);
    
    return true;
}

bool ImapSynchronizer::syncFolder(const Folder& folder)
{
    Q_UNUSED(folder);
    qDebug() << "IMAP Synchronizer syncFolder (stub)";
    
    // Publish SyncStartedEvent
    WinoMail::Events::SyncStartedEvent event;
    event.eventId = generateEventId();
    event.timestamp = QDateTime::currentDateTimeUtc();
    event.accountId = m_account.id();
    event.folderId = QString::number(folder.id()); // Assuming folder.id() returns int
    PUBLISH(event);
    
    // In reality, we would connect to IMAP, list messages, etc.
    // For now, simulate some mail items being added
    QVector<MailItem> items = fetchMailItems(QString::number(folder.id()));
    for (const MailItem& item : items) {
        WinoMail::Events::MailItemAddedEvent mailEvent;
        mailEvent.eventId = generateEventId();
        mailEvent.timestamp = QDateTime::currentDateTimeUtc();
        mailEvent.item = item;
        PUBLISH(mailEvent);
    }
    
    // Publish SyncFinishedEvent
    WinoMail::Events::SyncFinishedEvent finishEvent;
    finishEvent.eventId = generateEventId();
    finishEvent.timestamp = QDateTime::currentDateTimeUtc();
    finishEvent.accountId = m_account.id();
    finishEvent.folderId = QString::number(folder.id());
    finishEvent.success = true;
    finishEvent.errorMessage = "";
    PUBLISH(finishEvent);
    
    return true;
}

QVector<Folder> ImapSynchronizer::getFolders() const
{
    qDebug() << "IMAP Synchronizer getFolders (stub)";
    // Return a default inbox folder
    QVector<Folder> folders;
    folders.append(Folder(1, m_account.id(), "Inbox", "", true, false, false, false, 0, QDateTime::currentDateTime()));
    return folders;
}

QVector<MailItem> ImapSynchronizer::fetchMailItems(const QString& folderId, 
                                                  qint64 sinceUid)
{
    Q_UNUSED(folderId);
    Q_UNUSED(sinceUid);
    qDebug() << "IMAP Synchronizer fetchMailItems (stub)";
    // Return a dummy mail item for testing
    QVector<MailItem> items;
    items.append(MailItem(1, 1, "Test Subject", "sender@example.com", "me@example.com",
                          QDateTime::currentDateTime(), false, false));
    return items;
}

bool ImapSynchronizer::appendMailItem(const QString& folderId, const MailItem& item)
{
    Q_UNUSED(folderId);
    Q_UNUSED(item);
    qDebug() << "IMAP Synchronizer appendMailItem (stub)";
    // In a real implementation, this would send the mail via IMAP APPEND
    // For now, we'll simulate success and publish an event
    WinoMail::Events::MailItemAddedEvent event;
    event.eventId = generateEventId();
    event.timestamp = QDateTime::currentDateTimeUtc();
    event.item = item;
    PUBLISH(event);
    return true;
}

bool ImapSynchronizer::updateMailItemFlags(const QString& folderId, 
                                          const QString& itemUid,
                                          bool read, bool flagged)
{
    Q_UNUSED(folderId);
    Q_UNUSED(itemUid);
    Q_UNUSED(read);
    Q_UNUSED(flagged);
    qDebug() << "IMAP Synchronizer updateMailItemFlags (stub)";
    // In a real implementation, this would update flags via IMAP STORE
    // For now, we'll simulate success and publish an update event
    // We need to fetch the item first to know what changed
    MailItem item; // This would be fetched from storage
    item.setId(itemUid.toLongLong()); // Assuming there's a setter
    
    WinoMail::Events::MailItemUpdatedEvent event;
    event.eventId = generateEventId();
    event.timestamp = QDateTime::currentDateTimeUtc();
    event.item = item;
    event.changedFields = QStringList() << "read" << "flagged"; // Simplified
    PUBLISH(event);
    return true;
}

bool ImapSynchronizer::deleteMailItem(const QString& folderId, 
                                     const QString& itemUid)
{
    Q_UNUSED(folderId);
    Q_UNUSED(itemUid);
    qDebug() << "IMAP Synchronizer deleteMailItem (stub)";
    // In a real implementation, this would delete the mail via IMAP STORE +FLAGS or EXPUNGE
    // For now, we'll simulate success and publish a removal event
    WinoMail::Events::MailItemRemovedEvent event;
    event.eventId = generateEventId();
    event.timestamp = QDateTime::currentDateTimeUtc();
    event.itemUid = itemUid;
    event.folderId = folderId.toInt(); // Assuming folderId is numeric
    PUBLISH(event);
    return true;
}

// Helper para generar IDs únicos de eventos
QString ImapSynchronizer::generateEventId() const
{
    // Simple implementation using timestamp and random component
    return QString::number(QDateTime::currentMSecsSinceEpoch()) + "_" + 
           QString::number(std::rand());
}
