#include <QSqlQuery>
#include <QSqlError>
#include <QRegularExpression>
#include "MaterialDAO.h"

#include "db/MaterialInfo.h"
#include "DatabaseManager.h"
#include "time/DateUtils.h"

bool MaterialDAO::upsertAccount(const MaterialInfo &info) {
    // Валидация: lastNumbers должен содержать только цифры
    static const QRegularExpression digitsOnly(R"(^\d+$)");
    if (!info.lastNumbers.isEmpty() && !digitsOnly.match(info.lastNumbers).hasMatch()) {
        qWarning() << "[MaterialDAO] upsertAccount rejected: lastNumbers is not numeric:"
                    << info.lastNumbers << "appCode:" << info.appCode;
        return false;
    }

    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        INSERT INTO materials (device_id, app_code, last_numbers, card_number, account_number, amount, update_time, status, description, currency, material_id)
        VALUES (:device_id, :app_code, :last_numbers, :card_number, :account_number, :amount, :update_time, :status, :description, :currency, :material_id)
        ON CONFLICT(device_id, app_code, last_numbers)
        DO UPDATE SET
            amount = excluded.amount,
            update_time = excluded.update_time,
            last_numbers = excluded.last_numbers,
            card_number = CASE WHEN excluded.card_number != '' THEN excluded.card_number ELSE materials.card_number END,
            account_number = CASE WHEN excluded.account_number != '' THEN excluded.account_number ELSE materials.account_number END,
            status = excluded.status,
            description = excluded.description,
            currency = excluded.currency,
            material_id = CASE WHEN excluded.material_id != '' THEN excluded.material_id ELSE materials.material_id END
    )");

    query.bindValue(":device_id", info.deviceId);
    query.bindValue(":app_code", info.appCode);
    query.bindValue(":last_numbers", info.lastNumbers);
    query.bindValue(":card_number", info.cardNumber);
    query.bindValue(":account_number", info.accountNumber);
    query.bindValue(":currency", info.currency);
    query.bindValue(":description", info.description);
    query.bindValue(":amount", info.amount);
    query.bindValue(":update_time", DateUtils::toUtcString(info.updateTime));
    query.bindValue(":status", materialStatusToString(info.status));
    query.bindValue(":material_id", info.materialId);

    if (!query.exec()) {
        qWarning() << "Ошибка при вставке/обновлении account:" << query.lastError().text();
        return false;
    }

    return true;
}

bool MaterialDAO::updateAccountById(
    const int id,
    const QString &status,
    const QString &description,
    const QString &currency
) {
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        UPDATE materials
        SET status = :status,
            description = :description,
            currency = :currency
        WHERE id = :id
    )");

    query.bindValue(":status", status);
    query.bindValue(":description", description);
    query.bindValue(":currency", currency);
    query.bindValue(":id", id);

    if (!query.exec()) {
        qWarning() << "Ошибка при обновлении account по id:" << query.lastError().text();
        return false;
    }

    return true;
}

bool MaterialDAO::updateStatus(const int id, const QString &status) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare("UPDATE materials SET status = :status WHERE id = :id");
    query.bindValue(":status", status);
    query.bindValue(":id", id);
    if (!query.exec()) {
        qWarning() << "[MaterialDAO] updateStatus failed:" << query.lastError().text();
        return false;
    }
    return true;
}

bool MaterialDAO::deleteAccount(const int id) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare("DELETE FROM materials WHERE id = :id");
    query.bindValue(":id", id);
    return query.exec();
}

bool MaterialDAO::updateCardNumber(const int accountId, const QString &cardNumber) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare(R"(
        UPDATE materials SET card_number = :card_number WHERE id = :id
    )");
    query.bindValue(":card_number", cardNumber);
    query.bindValue(":id", accountId);
    if (!query.exec()) {
        qWarning() << "Ошибка при обновлении card_number:" << query.lastError().text();
        return false;
    }
    return true;
}

bool MaterialDAO::updateMaterialId(const int accountId, const QString &materialId) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare("UPDATE materials SET material_id = :material_id WHERE id = :id");
    query.bindValue(":material_id", materialId);
    query.bindValue(":id", accountId);
    if (!query.exec()) {
        qWarning() << "Ошибка при обновлении material_id:" << query.lastError().text();
        return false;
    }
    return true;
}

MaterialInfo parseAccount(const QSqlQuery &query) {
    MaterialInfo acc;
    acc.id = query.value("id").toInt();
    acc.deviceId = query.value("device_id").toString();
    acc.appCode = query.value("app_code").toString();
    acc.lastNumbers = query.value("last_numbers").toString();
    acc.cardNumber = query.value("card_number").toString();
    acc.accountNumber = query.value("account_number").toString();
    acc.materialId = query.value("material_id").toString();
    acc.amount = query.value("amount").toDouble();
    acc.updateTime = DateUtils::fromUtcString(query.value("update_time").toString());
    acc.status = materialStatusFromString(query.value("status").toString());
    acc.description = query.value("description").toString();
    acc.currency = query.value("currency").toString();
    return acc;
}

QList<MaterialInfo> MaterialDAO::activateExclusive(
    const QString &deviceId, const QString &appCode, const int targetId) {
    QList<MaterialInfo> deactivated;
    QSqlDatabase db = DatabaseManager::instance().database();

    db.transaction();

    QSqlQuery sel(db);
    sel.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE device_id = :device_id AND app_code = :app_code
          AND status = 'active' AND id != :target_id
    )");
    sel.bindValue(":device_id", deviceId);
    sel.bindValue(":app_code", appCode);
    sel.bindValue(":target_id", targetId);
    if (sel.exec()) {
        while (sel.next()) deactivated.append(parseAccount(sel));
    } else {
        qWarning() << "[MaterialDAO] activateExclusive select failed:" << sel.lastError().text();
        db.rollback();
        return {};
    }

    QSqlQuery off(db);
    off.prepare(R"(
        UPDATE materials SET status = 'off'
        WHERE device_id = :device_id AND app_code = :app_code AND id != :target_id
    )");
    off.bindValue(":device_id", deviceId);
    off.bindValue(":app_code", appCode);
    off.bindValue(":target_id", targetId);
    if (!off.exec()) {
        qWarning() << "[MaterialDAO] activateExclusive off-update failed:" << off.lastError().text();
        db.rollback();
        return {};
    }

    QSqlQuery on(db);
    on.prepare("UPDATE materials SET status = 'active' WHERE id = :id");
    on.bindValue(":id", targetId);
    if (!on.exec()) {
        qWarning() << "[MaterialDAO] activateExclusive on-update failed:" << on.lastError().text();
        db.rollback();
        return {};
    }

    db.commit();
    return deactivated;
}

QList<MaterialInfo> MaterialDAO::getAccounts(const QString &deviceId, const QString &appName) {
    QList<MaterialInfo> accounts;
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE device_id = :device_id AND app_code = :app_code
        ORDER BY id
    )");

    query.bindValue(":device_id", deviceId);
    query.bindValue(":app_code", appName);

    if (!query.exec()) {
        qWarning() << "Ошибка при получении materials:" << query.lastError().text();
        return accounts;
    }

    while (query.next()) {
        accounts.append(parseAccount(query));
    }

    return accounts;
}

MaterialInfo MaterialDAO::getAccountById(const int accountId) {
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE id = :id
        LIMIT 1
    )");

    query.bindValue(":id", accountId);

    if (!query.exec()) {
        qWarning() << "Ошибка при получении account по ID:" << query.lastError().text();
        return {};
    }

    if (query.next()) {
        return parseAccount(query);
    }
    return {};
}

QList<MaterialInfo> MaterialDAO::getAccountsByAppCode(const QString &appCode) {
    QList<MaterialInfo> accounts;
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE app_code = :app_code
    )");

    query.bindValue(":app_code", appCode);

    if (!query.exec()) {
        qWarning() << "Ошибка при получении materials по app_code:" << query.lastError().text();
        return accounts;
    }

    while (query.next()) {
        accounts.append(parseAccount(query));
    }

    return accounts;
}

MaterialInfo MaterialDAO::findAppAccount(const QString &deviceId, const QString &appName, const QString &lastNumber) {
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE app_code = :appName AND last_numbers = :lastNumber AND device_id = :deviceId
        LIMIT 1
    )");

    query.bindValue(":deviceId", deviceId);
    query.bindValue(":appName", appName);
    query.bindValue(":lastNumber", lastNumber);

    if (!query.exec()) {
        qWarning() << "Ошибка при получении account по ID:" << query.lastError().text();
        return {};
    }

    if (query.next()) {
        return parseAccount(query);
    }

    return {};
}

QStringList MaterialDAO::getActiveMaterialIds() {
    QStringList ids;
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare(R"(
        SELECT a.material_id
        FROM materials a
        JOIN bank_profiles app ON a.device_id = app.device_id AND a.app_code = app.code
        JOIN devices d ON a.device_id = d.id
        WHERE app.status = 'active'
          AND a.material_id IS NOT NULL AND a.material_id != ''
          AND d.status = 'device' AND d.image IS NOT NULL
    )");

    if (!query.exec()) {
        qWarning() << "Ошибка при получении active material_ids:" << query.lastError().text();
        return ids;
    }

    while (query.next()) {
        ids << query.value(0).toString();
    }
    return ids;
}

QStringList MaterialDAO::getActiveMaterialIdsExcludingDevices(const QSet<QString> &excludeDevices) {
    const QStringList all = getActiveMaterialIds();
    if (excludeDevices.isEmpty()) return all;

    QStringList filtered;
    for (const QString &mid : all) {
        const MaterialInfo acc = findByMaterialId(mid);
        if (!excludeDevices.contains(acc.deviceId)) {
            filtered << mid;
        }
    }
    return filtered;
}

MaterialInfo MaterialDAO::findByMaterialId(const QString &materialId) {
    QSqlQuery query(DatabaseManager::instance().database());

    query.prepare(R"(
        SELECT id, device_id, app_code, last_numbers, card_number, account_number, material_id, amount, update_time, status, description, currency
        FROM materials
        WHERE material_id = :material_id
        LIMIT 1
    )");

    query.bindValue(":material_id", materialId);

    if (!query.exec()) {
        qWarning() << "Ошибка при поиске account по material_id:" << query.lastError().text();
        return {};
    }

    if (query.next()) {
        return parseAccount(query);
    }

    return {};
}

bool MaterialDAO::migrateDeviceId(const QString &oldDeviceId, const QString &newDeviceId) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare("UPDATE materials SET device_id = :new_id WHERE device_id = :old_id");
    query.bindValue(":new_id", newDeviceId);
    query.bindValue(":old_id", oldDeviceId);
    if (!query.exec()) {
        qWarning() << "[MaterialDAO] migrateDeviceId failed:" << query.lastError().text();
        return false;
    }
    qDebug() << "[MaterialDAO] migrated" << query.numRowsAffected() << "materials from" << oldDeviceId << "to" << newDeviceId;
    return true;
}

bool MaterialDAO::deleteAccountsByApp(const QString &deviceId, const QString &appCode) {
    QSqlQuery query(DatabaseManager::instance().database());
    query.prepare("DELETE FROM materials WHERE device_id = :device_id AND app_code = :app_code AND (material_id IS NULL OR material_id = '')");
    query.bindValue(":device_id", deviceId);
    query.bindValue(":app_code", appCode);
    if (!query.exec()) {
        qWarning() << "[MaterialDAO] deleteAccountsByApp failed:" << query.lastError().text();
        return false;
    }
    return true;
}