#include "BankListWindow.h"

#include <QHeaderView>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QLabel>
#include <QMessageBox>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QSslSocket>
#include <QLineEdit>
#include <QPushButton>
#include <QVBoxLayout>

#include "dao/BankDAO.h"

BankListWindow::BankListWindow(QWidget *parent)
    : QWidget(parent,
              Qt::Window
              | Qt::WindowTitleHint
              | Qt::WindowSystemMenuHint
              | Qt::WindowCloseButtonHint
              | Qt::WindowMinMaxButtonsHint) {
    setWindowTitle("Банки");
    setMinimumSize(600, 400);
    resize(700, 500);

    auto *layout = new QVBoxLayout(this);

    auto *topRow = new QHBoxLayout();
    auto *syncBtn = new QPushButton("Синхронизировать");
    syncBtn->setStyleSheet("background-color: #1565C0; color: white;");
    syncBtn->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
    topRow->addWidget(syncBtn);
    auto *searchEdit = new QLineEdit(this);
    searchEdit->setPlaceholderText("Поиск...");
    searchEdit->setClearButtonEnabled(true);
    topRow->addWidget(searchEdit);

    topRow->addStretch();
    layout->addLayout(topRow);

    connect(syncBtn, &QPushButton::clicked, this, &BankListWindow::syncBanks);
    connect(searchEdit, &QLineEdit::textChanged, this, &BankListWindow::filterTable);

    m_tableWidget = new QTableWidget(this);
    m_tableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);
    m_tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
    m_tableWidget->setSelectionBehavior(QAbstractItemView::SelectRows);
    m_tableWidget->setColumnCount(3);
    m_tableWidget->setHorizontalHeaderLabels({"Alias", "Название", "NSPK"});
    m_tableWidget->horizontalHeader()->setDefaultAlignment(Qt::AlignLeft | Qt::AlignVCenter);
    m_tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);

    layout->addWidget(m_tableWidget);

    reloadTable();
}

void BankListWindow::reloadTable() {
    QList<BankInfo> banks = BankDAO::getAll();

    m_tableWidget->setRowCount(banks.size());
    for (int i = 0; i < banks.size(); ++i) {
        const BankInfo &b = banks[i];

        auto *alias = new QTableWidgetItem(b.alias);
        alias->setFlags(alias->flags() & ~Qt::ItemIsEditable);
        m_tableWidget->setItem(i, 0, alias);

        auto *name = new QTableWidgetItem(b.name);
        name->setFlags(name->flags() & ~Qt::ItemIsEditable);
        m_tableWidget->setItem(i, 1, name);

        auto *nspk = new QTableWidgetItem(b.nspkName);
        nspk->setFlags(nspk->flags() & ~Qt::ItemIsEditable);
        m_tableWidget->setItem(i, 2, nspk);
    }
}

void BankListWindow::syncBanks() {
    if (!QSslSocket::supportsSsl()) {
        QMessageBox::warning(this, "Ошибка",
            "SSL не доступен. HTTPS-запросы невозможны.\n\n"
            "Убедитесь, что libssl и libcrypto DLL находятся рядом с исполняемым файлом.");
        qWarning() << "[BankListWindow] SSL not supported. Build:"
                   << QSslSocket::sslLibraryBuildVersionString()
                   << "Runtime:" << QSslSocket::sslLibraryVersionString();
        return;
    }

    auto *manager = new QNetworkAccessManager(this);

    QNetworkRequest request(QUrl("https://api.brtservice.io/api/rest/info/"));
    QNetworkReply *reply = manager->get(request);

    connect(reply, &QNetworkReply::finished, this, [this, reply, manager]() {
        reply->deleteLater();
        manager->deleteLater();

        if (reply->error() != QNetworkReply::NoError) {
            QMessageBox::warning(this, "Ошибка", "Не удалось загрузить банки: " + reply->errorString());
            return;
        }

        const QByteArray data = reply->readAll();
        const QJsonDocument doc = QJsonDocument::fromJson(data);

        QJsonArray array;
        if (doc.isArray()) {
            array = doc.array();
        } else if (doc.isObject() && doc.object().contains("data")) {
            array = doc.object()["data"].toArray();
        }

        QList<BankInfo> banks;
        for (const QJsonValue &val : array) {
            QJsonObject obj = val.toObject();
            BankInfo bank;
            bank.alias = obj["alias"].toString();
            bank.name = obj["name"].toString();
            bank.nspkName = obj["nspk_name"].toString();
            if (!bank.alias.isEmpty()) {
                banks.append(bank);
            }
        }

        BankDAO::replaceAll(banks);
        reloadTable();

        qDebug() << "[BankListWindow] Synced" << banks.size() << "banks";
    });
}

void BankListWindow::filterTable(const QString &text) {
    for (int i = 0; i < m_tableWidget->rowCount(); ++i) {
        bool match = false;
        for (int col = 0; col < m_tableWidget->columnCount(); ++col) {
            QTableWidgetItem *item = m_tableWidget->item(i, col);
            if (item && item->text().contains(text, Qt::CaseInsensitive)) {
                match = true;
                break;
            }
        }
        m_tableWidget->setRowHidden(i, !match);
    }
}