/*
 *openPilot Log - A FOSS Pilot Logbook Application
 *Copyright (C) 2020  Felix Turowsky
 *
 *This program 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.
 *
 *This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "newpilotdialog.h"
#include "ui_newpilot.h"
#include "src/functions/adebug.h"

/* Examples for names around the world:
 * José Eduardo Santos Tavares Melo Silva
 * María José Carreño Quiñones
 * 毛泽东先生 (Mao Ze Dong xiān shēng)
 * Борис Николаевич Ельцин (Boris Nikolayevich Yeltsin)
 * John Q. Public
 * Abu Karim Muhammad al-Jamil ibn Nidal ibn Abdulaziz al-Filistini
 * Nguyễn Tấn Dũng
 * 東海林賢蔵
 * Chris van de Hoopen
 * Karl-Gustav von Meiershausen
 * Mathias d'Arras
 * Martin Luther King, Jr.
 */

static const auto NAME_RX = QLatin1String("(\\p{L}+(\\s|'|\\-)?\\s?(\\p{L}+)?\\s?)");
static const auto FIRSTNAME_VALID = QPair<QString, QRegularExpression> {
     "picfirstnameLineEdit", QRegularExpression(NAME_RX + NAME_RX + NAME_RX)};
static const auto LASTNAME_VALID = QPair<QString, QRegularExpression> {
     "piclastnameLineEdit", QRegularExpression(NAME_RX + NAME_RX + NAME_RX)};
static const auto PHONE_VALID = QPair<QString, QRegularExpression> {
     "phoneLineEdit", QRegularExpression("^[+]{0,1}[0-9\\-\\s]+")};
static const auto EMAIL_VALID = QPair<QString, QRegularExpression> {
     "emailLineEdit", QRegularExpression(
                "\\A[a-z0-9!#$%&'*+/=?^_‘{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_‘{|}~-]+)*@"
                "(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\z")};
static const auto COMPANY_VALID = QPair<QString, QRegularExpression> {
     "companyLineEdit", QRegularExpression("\\w+(\\s|\\-)?(\\w+(\\s|\\-)?)?(\\w+(\\s|\\-)?)?")};
static const auto EMPLOYEENR_VALID = QPair<QString, QRegularExpression> {
     "employeeidLineEdit", QRegularExpression("\\w+")};

static const auto LINE_EDIT_VALIDATORS = QVector{
        FIRSTNAME_VALID,
        LASTNAME_VALID,
        PHONE_VALID,
        EMAIL_VALID,
        COMPANY_VALID,
        EMPLOYEENR_VALID
};

using namespace experimental;

// For creating a new entry
NewPilotDialog::NewPilotDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::NewPilot)
{
    DEB("New NewPilotDialog (newEntry)");
    setup();

    pilotEntry = APilotEntry();
    ui->piclastnameLineEdit->setFocus();
}

NewPilotDialog::NewPilotDialog(int rowId, QWidget *parent) :
    QDialog(parent),
    ui(new Ui::NewPilot)
{
    DEB("New NewPilotDialog (editEntry)");
    setup();

    pilotEntry = aDB()->getPilotEntry(rowId);
    DEB("Pilot Entry position: " << pilotEntry.getPosition());
    formFiller();
    ui->piclastnameLineEdit->setFocus();
}

NewPilotDialog::~NewPilotDialog()
{
    DEB("Deleting New NewPilotDialog");
    delete ui;
}

void NewPilotDialog::setup()
{
    ui->setupUi(this);

    DEB("Setting up Validators...");
    for (const auto& pair : LINE_EDIT_VALIDATORS) {
        auto line_edit = parent()->findChild<QLineEdit*>(pair.first);
        if (line_edit != nullptr) {
            auto validator = new QRegularExpressionValidator(pair.second,line_edit);
            line_edit->setValidator(validator);
        } else {
            DEB("Error: Line Edit not found: "<< pair.first << " - skipping.");
        }
    }

    DEB("Setting up completer...");
    auto completer = new QCompleter(aDB()->getCompletionList(ADataBase::companies), ui->companyLineEdit);
    completer->setCompletionMode(QCompleter::InlineCompletion);
    completer->setCaseSensitivity(Qt::CaseSensitive);
    ui->companyLineEdit->setCompleter(completer);

    ///[F] moved connecting the slots here because
    /// - no need to declare the slots public as would be the case if connected in mainwindow
    /// - only one place where slots are connected vs. several places (mainwindow, pilotswidget),
    ///   makes it easier to maintain.
    /// - these signals and slots are specific to this dialog, for communication with
    ///   other widgets we have the QDialog::accepted() and QDialog::rejected signals.
    QObject::connect(aDB(), &ADataBase::sqlSuccessful,
                     this, &NewPilotDialog::onCommitSuccessful);
    QObject::connect(aDB(), &ADataBase::sqlError,
                     this, &NewPilotDialog::onCommitUnsuccessful);
}

void NewPilotDialog::on_buttonBox_accepted()
{
    if (ui->piclastnameLineEdit->text().isEmpty() || ui->picfirstnameLineEdit->text().isEmpty()) {
        auto mb = QMessageBox(this);
        mb.setText("Last Name and First Name are required.");
        mb.show();
    } else {
        submitForm();
    }
}

void NewPilotDialog::onCommitSuccessful()
{
    accept();
}

void NewPilotDialog::onCommitUnsuccessful(const QSqlError &sqlError, const QString &)
{
    auto mb = QMessageBox(this);
    mb.setIcon(QMessageBox::Critical);
    mb.setText("The following error has ocurred.\n\n"
               + sqlError.text()
               + "\n\nYour entry has not been saved.");
    mb.exec();
}

void NewPilotDialog::formFiller()
{
    DEB("Filling Form...");
    auto line_edits = this->findChildren<QLineEdit *>();

    for (const auto &le : line_edits) {
        QString key = le->objectName().remove("LineEdit");
        QString value = pilotEntry.getData().value(key);
        le->setText(value);
    }
}

void NewPilotDialog::submitForm()
{
    DEB("Collecting User Input...");

    TableData new_data;
    auto line_edits = this->findChildren<QLineEdit *>();
    for(auto& le : line_edits) {
        auto key = le->objectName().remove("LineEdit");
        auto value = le->text();
        new_data.insert(key, value);
    }

    pilotEntry.setData(new_data);
    DEB("Pilot entry position: " << pilotEntry.getPosition());
    DEB("Pilot entry data: " << pilotEntry.getData());
    aDB()->commit(pilotEntry);
}