#include "widget.h"
#include "ui_widget.h"

#include <QFileDialog>

myTable::myTable(const records &hash):QTableWidget() {
    fill(hash);
}
void myTable::fill(const records &hash) {
    setRowCount(hash.size());
    setColumnCount(2);
    int ii=0;
    for (const auto &rec: hash ) {
        QTableWidgetItem *item1 = new QTableWidgetItem(rec.first);
        QTableWidgetItem *item2 = new QTableWidgetItem(rec.second);
        setItem(ii, 0, item1);
        setItem(ii, 1, item2);
        ++ii;
    }
}
Widget::Widget(QWidget *parent)
    : QWidget(parent), ui(new Ui::Widget)
{
    ui->setupUi(this);
    ui->lineEdit->hide();
    ui->pushButton->setIcon(QIcon(":/res/icons/open-file-48.png"));
    ui->pushButton->setIconSize(QSize(28, 28));
    ui->pushButton->setToolTip("Открыть INI файл...");
    ui->pushButton_2->setIcon(QIcon(":/res/icons/logout-52.png"));
    ui->pushButton_2->setIconSize(QSize(26, 22));
    ui->pushButton_2->setToolTip("Выход");
    ui->pushButton_3->setIcon(QIcon(":/res/icons/save-as-64.png"));
    ui->pushButton_3->setIconSize(QSize(28, 28));
    ui->pushButton_3->setToolTip("Сохранить как...");
    ui->pushButton_3->setEnabled(false);
    ui->pushButton_4->setIcon(QIcon(":/res/icons/save-50.png"));
    ui->pushButton_4->setIconSize(QSize(26, 26));
    ui->pushButton_4->setToolTip("Сохранить");
    ui->pushButton_4->setEnabled(false);
    ui->tabWidget->hide();

    setWindowIcon(QIcon());
}

Widget::~Widget()
{
    delete ui;
}


void Widget::on_pushButton_clicked()
{
    QString pathStr = ui->lineEdit->text();
    if (pathStr.isEmpty()) pathStr = QDir::currentPath();
    QString fileName = QFileDialog::getOpenFileName(this,
                                                    tr("Выберите файл"),
                                                    pathStr,
                                                    tr("INI файлы (*.ini)"));
    if (!fileName.isEmpty()) {
        ui->lineEdit->setText(fileName);
        QTimer::singleShot(200, this, SLOT(genTabs()));
    }
}

void Widget::genTabs() {
    ui->tabWidget->hide();
    tabs.clear();
    QTabWidget *tw = ui->tabWidget;
    for (int i=tw->count()-1; i>=0; i--) {
        QWidget *w = tw->widget(i);
        tw->removeTab(i);
        if (w!= nullptr) delete w;
    }
    tw->clear();
    this->setWindowTitle(ui->lineEdit->text());
    QFile file(ui->lineEdit->text());
    if (!file.open(QIODevice::ReadOnly)) {
        QMessageBox::critical(this, "Ошибка", "Ошибка открытия файла");
        ui->pushButton_3->setEnabled(false);
        ui->pushButton_4->setEnabled(false);
        return;
    }

    ui->pushButton_3->setEnabled(true);
    ui->pushButton_4->setEnabled(true);

    proceedFile(file);
    if (file.isOpen()) file.close();

    const QIcon nullIcon;

    for (int i=0; i<tabs.size(); ++i) {
        myTable *local_tab = new myTable(tabs[i].m_hash);
        tw->addTab(local_tab, nullIcon, tabs[i].m_name);
    }
    tw->setCurrentIndex(0);
    tw->show();

}

void Widget::on_lineEdit_returnPressed()
{
    QTimer::singleShot(200, this, SLOT(genTabs()));
}

void Widget::on_pushButton_2_clicked()
{
    close();
}

void Widget::proceedFile(QFile &file) {
    int numLine = 0;
    comments.clear();
    while (!file.atEnd()) {
        numLine++;
        QByteArray line = file.readLine();
        QString str = QString::fromLocal8Bit(line.data());
        if (str.length()>1 && str.right(2) == "\r\n") str.chop(2);
        while (!str.isEmpty() && str.back()=='\t') str.chop(1);
        if (str.isEmpty()) continue;
        if (str.front()==';') {
            comments.insert(numLine, str);
            continue;
        }
        if (str.front() == '[') {
            tabs.push_back(tabChapter(str));
            continue;
        }
        QString strKey = str.section('=', 0, 0);
        QString strData = str.section('=', 1);
        QPair<QString, QString> pair(strKey, strData);
        tabs.back().m_hash.push_back(pair);
    }
}

void Widget::on_pushButton_4_clicked()
{
// saveBtn
    QString path = ui->lineEdit->text();
    saveDataToFile(path);
}

void Widget::on_pushButton_3_clicked()
{
// saveAsBtn
    QString pathStr = ui->lineEdit->text();
    if (pathStr.isEmpty()) pathStr = QDir::currentPath();
    QString fileName = QFileDialog::getSaveFileName(this,
                                                    tr("Выберите файл"),
                                                    pathStr,
                                                    tr("INI файлы (*.ini)"));
    if (!fileName.isEmpty()) {
        saveDataToFile(fileName);
    }
}

void Widget::saveDataToFile(QString &name) {
    QFile fd(name);
    if (!fd.open(QIODevice::WriteOnly | QIODevice::Text)) {
        QMessageBox::critical(this, "Ошибка файла", "Ошибка открытия файла на запись");
    }

    int numLine = 1;

    while (comments.find(numLine)!=comments.end()) {
        fd.write(comments[numLine++].toLocal8Bit());
        fd.write("\n");
    }

    for (int i=0; i<ui->tabWidget->count(); ++i) {
        fd.write(ui->tabWidget->tabText(i).toLocal8Bit());
        fd.write("\n");
        numLine++;
        while (comments.find(numLine)!=comments.end()) {
            fd.write(comments[numLine++].toLocal8Bit());
            fd.write("\n");
        }

        myTable *tab = (myTable *)ui->tabWidget->widget(i);
        for (int j=0; j<tab->rowCount(); j++) {
            QString str = tab->item(j, 0)->text() +
                          QString("=") + tab->item(j, 1)->text() + "\n";
            fd.write(str.toLocal8Bit());
            numLine++;
            while (comments.find(numLine)!=comments.end()) {
                fd.write(comments[numLine++].toLocal8Bit());
                fd.write("\n");
            }
        }
        fd.write("\n");
        numLine++;

    }

    if (fd.isOpen()) fd.close();
    setWindowTitle(name);
}