/**
 * This file is part of GPGFrontend.
 *
 * GPGFrontend is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Foobar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Foobar.  If not, see <https://www.gnu.org/licenses/>.
 *
 * The initial version of the source code is inherited from gpg4usb-team.
 * Their source code version also complies with GNU General Public License.
 *
 * The source code version of this software was modified and released
 * by Saturneric<eric@bktus.com> starting on May 12, 2021.
 *
 */

#include "MainWindow.h"

void MainWindow::slotEncrypt() {

    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    QVector<GpgKey> keys;
    mKeyList->getCheckedKeys(keys);

    if (keys.count() == 0) {
        QMessageBox::critical(nullptr, tr("No Key Selected"), tr("No Key Selected"));
        return;
    }

    for (const auto &key : keys) {
        if (!GpgME::GpgContext::checkIfKeyCanEncr(key)) {
            QMessageBox::information(nullptr,
                                     tr("Invalid Operation"),
                                     tr("The selected key contains a key that does not actually have a encrypt function.<br/>")
                                     + tr("<br/>For example the Following Key: <br/>") + key.uids.first().uid);
            return;

        }
    }

    auto *tmp = new QByteArray();

    gpgme_encrypt_result_t result = nullptr;
    auto error = mCtx->encrypt(keys, edit->curTextPage()->toPlainText().toUtf8(), tmp, &result);

    auto resultAnalyse = new EncryptResultAnalyse(error, result);
    auto &reportText = resultAnalyse->getResultReport();

    auto *tmp2 = new QString(*tmp);
    edit->slotFillTextEditWithText(*tmp2);
    infoBoard->associateTextEdit(edit->curTextPage());

    if (resultAnalyse->getStatus() < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (resultAnalyse->getStatus() > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    delete resultAnalyse;
}

void MainWindow::slotSign() {
    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    QVector<GpgKey> keys;

    mKeyList->getPrivateCheckedKeys(keys);

    if (keys.isEmpty()) {
        QMessageBox::critical(nullptr, tr("No Key Selected"), tr("No Key Selected"));
        return;
    }

    for (const auto &key : keys) {
        if (!GpgME::GpgContext::checkIfKeyCanSign(key)) {
            QMessageBox::information(nullptr,
                                     tr("Invalid Operation"),
                                     tr("The selected key contains a key that does not actually have a signature function.<br/>")
                                     + tr("<br/>For example the Following Key: <br/>") + key.uids.first().uid);
            return;
        }
    }

    auto *tmp = new QByteArray();

    gpgme_sign_result_t result = nullptr;

    auto error = mCtx->sign(keys, edit->curTextPage()->toPlainText().toUtf8(), tmp, false, &result);
    infoBoard->associateTextEdit(edit->curTextPage());
    edit->slotFillTextEditWithText(QString::fromUtf8(*tmp));

    auto resultAnalyse = new SignResultAnalyse(error, result);

    auto &reportText = resultAnalyse->getResultReport();
    if (resultAnalyse->getStatus() < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (resultAnalyse->getStatus() > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    delete resultAnalyse;
}

void MainWindow::slotDecrypt() {
    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    auto *decrypted = new QByteArray();
    QByteArray text = edit->curTextPage()->toPlainText().toUtf8();
    GpgME::GpgContext::preventNoDataErr(&text);

    gpgme_decrypt_result_t result = nullptr;
    // try decrypt, if fail do nothing, especially don't replace text
    auto error = mCtx->decrypt(text, decrypted, &result);
    infoBoard->associateTextEdit(edit->curTextPage());

    if(gpgme_err_code(error) == GPG_ERR_NO_ERROR)
        edit->slotFillTextEditWithText(QString::fromUtf8(*decrypted));

    auto resultAnalyse = new DecryptResultAnalyse(mCtx, error, result);

    auto &reportText = resultAnalyse->getResultReport();
    if (resultAnalyse->getStatus() < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (resultAnalyse->getStatus() > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    delete resultAnalyse;
}

void MainWindow::slotFind() {
    if (edit->tabCount() == 0 || edit->curTextPage() == nullptr) {
        return;
    }

    // At first close verifynotification, if existing
    edit->slotCurPage()->closeNoteByClass("findwidget");

    auto *fw = new FindWidget(this, edit->curTextPage());
    edit->slotCurPage()->showNotificationWidget(fw, "findWidget");

}

void MainWindow::slotVerify() {
    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    // If an unknown key is found, enable the importfromkeyserveraction

    QByteArray text = edit->curTextPage()->toPlainText().toUtf8();
    GpgME::GpgContext::preventNoDataErr(&text);


    gpgme_verify_result_t result;

    auto error = mCtx->verify(&text, nullptr, &result);

    auto resultAnalyse = new VerifyResultAnalyse(mCtx, error, result);
    infoBoard->associateTextEdit(edit->curTextPage());

    auto &reportText = resultAnalyse->getResultReport();
    if (resultAnalyse->getStatus() < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (resultAnalyse->getStatus() > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    if (resultAnalyse->getStatus() >= 0) {
        infoBoard->resetOptionActionsMenu();
        infoBoard->addOptionalAction("Show Verify Details", [this, error, result]() {
            VerifyDetailsDialog(this, mCtx, mKeyList, error, result);
        });
    }

    delete resultAnalyse;
}

/*
 * Append the selected (not checked!) Key(s) To Textedit
 */
void MainWindow::slotAppendSelectedKeys() {
    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    auto *keyArray = new QByteArray();
    mCtx->exportKeys(mKeyList->getSelected(), keyArray);
    edit->curTextPage()->append(*keyArray);
}

void MainWindow::slotCopyMailAddressToClipboard() {
    if (mKeyList->getSelected()->isEmpty()) {
        return;
    }
    auto &key = mCtx->getKeyById(mKeyList->getSelected()->first());
    QClipboard *cb = QApplication::clipboard();
    QString mail = key.email;
    cb->setText(mail);
}

void MainWindow::slotShowKeyDetails() {
    if (mKeyList->getSelected()->isEmpty()) {
        return;
    }
    auto &key = mCtx->getKeyById(mKeyList->getSelected()->first());
    if (key.good) {
        new KeyDetailsDialog(mCtx, key, this);
    }
}

void MainWindow::refreshKeysFromKeyserver() {
    if (mKeyList->getSelected()->isEmpty()) {
        return;
    }

    auto *dialog = new KeyServerImportDialog(mCtx, mKeyList, true, this);
    dialog->show();
    dialog->slotImport(*mKeyList->getSelected());

}

void MainWindow::uploadKeyToServer() {
    QVector<GpgKey> keys;
    keys.append(mKeyList->getSelectedKey());
    auto *dialog = new KeyUploadDialog(mCtx, keys, this);
    dialog->show();
    dialog->slotUpload();
}

void MainWindow::slotFileEncrypt() {
    QStringList *keyList;
    keyList = mKeyList->getChecked();
    new FileEncryptionDialog(mCtx, *keyList, FileEncryptionDialog::Encrypt, this);
}

void MainWindow::slotFileDecrypt() {
    QStringList *keyList;
    keyList = mKeyList->getChecked();
    new FileEncryptionDialog(mCtx, *keyList, FileEncryptionDialog::Decrypt, this);
}

void MainWindow::slotFileSign() {
    QStringList *keyList;
    keyList = mKeyList->getChecked();
    new FileEncryptionDialog(mCtx, *keyList, FileEncryptionDialog::Sign, this);
}

void MainWindow::slotFileVerify() {
    QStringList *keyList;
    keyList = mKeyList->getChecked();
    new FileEncryptionDialog(mCtx, *keyList, FileEncryptionDialog::Verify, this);
}

void MainWindow::slotEncryptSign() {

    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    QVector<GpgKey> keys;
    mKeyList->getCheckedKeys(keys);

    if (keys.empty()) {
        QMessageBox::critical(nullptr, tr("No Key Selected"), tr("No Key Selected"));
        return;
    }

    for (const auto &key : keys) {
        if (!GpgME::GpgContext::checkIfKeyCanSign(key) || !GpgME::GpgContext::checkIfKeyCanEncr(key)) {
            QMessageBox::information(nullptr,
                                     tr("Invalid Operation"),
                                     tr("The selected key cannot be used for signing and encryption at the same time.<br/>")
                                     + tr("<br/>For example the Following Key: <br/>") + key.uids.first().uid);
            return;
        }
    }

    auto *tmp = new QByteArray();
    gpgme_encrypt_result_t encr_result = nullptr;
    gpgme_sign_result_t sign_result = nullptr;

    auto error = mCtx->encryptSign(keys, edit->curTextPage()->toPlainText().toUtf8(), tmp, &encr_result, &sign_result);
    auto *tmp2 = new QString(*tmp);
    edit->slotFillTextEditWithText(*tmp2);

    auto resultAnalyseEncr = new EncryptResultAnalyse(error, encr_result);
    auto resultAnalyseSign = new SignResultAnalyse(error, sign_result);
    int status = std::min(resultAnalyseEncr->getStatus(), resultAnalyseSign->getStatus());
    auto reportText = resultAnalyseEncr->getResultReport() + resultAnalyseSign->getResultReport();

    infoBoard->associateTextEdit(edit->curTextPage());

    if (status < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (status > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    delete resultAnalyseEncr;
    delete resultAnalyseSign;
}

void MainWindow::slotDecryptVerify() {

    if (edit->tabCount() == 0 || edit->slotCurPage() == nullptr) {
        return;
    }

    auto *decrypted = new QByteArray();
    QByteArray text = edit->curTextPage()->toPlainText().toUtf8();
    GpgME::GpgContext::preventNoDataErr(&text);

    gpgme_decrypt_result_t d_result = nullptr;
    gpgme_verify_result_t v_result = nullptr;
    // try decrypt, if fail do nothing, especially don't replace text
    auto error = mCtx->decryptVerify(text, decrypted, &d_result, &v_result);
    infoBoard->associateTextEdit(edit->curTextPage());

    if(gpgme_err_code(error) == GPG_ERR_NO_ERROR)
        edit->slotFillTextEditWithText(QString::fromUtf8(*decrypted));

    auto resultAnalyseDecrypt = new DecryptResultAnalyse(mCtx, error, d_result);
    auto resultAnalyseVerify = new VerifyResultAnalyse(mCtx, error, v_result);

    int status = std::min(resultAnalyseDecrypt->getStatus(), resultAnalyseVerify->getStatus());
    auto &reportText = resultAnalyseDecrypt->getResultReport() + resultAnalyseVerify->getResultReport();
    if (status < 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_CRITICAL);
    else if (status > 0)
        infoBoard->slotRefresh(reportText, INFO_ERROR_OK);
    else
        infoBoard->slotRefresh(reportText, INFO_ERROR_WARN);

    if (resultAnalyseVerify->getStatus() >= 0) {
        infoBoard->resetOptionActionsMenu();
        infoBoard->addOptionalAction("Show Verify Details", [this, error, v_result]() {
            VerifyDetailsDialog(this, mCtx, mKeyList, error, v_result);
        });
    }
    delete resultAnalyseDecrypt;
    delete resultAnalyseVerify;
}