#include "mainwindow.h"
#include "./ui_mainwindow.h"
#include "check/check.h"
#include "exceptions/ofdrequestexception.h"
#include "goods/goods.h"
#include "outputdialog.h"
#include "adjustpicturedialog.h"
#include "settingsdialog.h"
#include "solvecaptchadialog.h"
#include <QFileDialog>
#include <QMessageBox>
#include "image/checkimage.h"
#include "utils/utils.h"
#include <opencv2/objdetect.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <zbar.h>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent), ui(new Ui::MainWindow) {
    ui->setupUi(this);
    this->setupStoresList();
}

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

void MainWindow::setupStoresList() {
    parser = *(new Parser());

    std::vector<std::string> modules_names = parser.search_modules();

    for (std::string name : modules_names) {
        StoreModule m(name);
        std::wstring module_name = m.get_name();

        QString s = QString::fromStdWString(module_name);
        ui->storeType->addItem(s);
    }
}

std::string MainWindow::makeRequestToOfd(std::string captcha) {
    std::string checkContent = Net().fetch_check_data_from_ofdru(
        ui->fn_edit->text().toStdString(),
        ui->fd_edit->text().toStdString(),
        ui->fi_edit->text().toStdString(),
        ui->dateTimeEdit->dateTime().toString(Qt::ISODate).toStdString(),
        ui->fundIncomeCombo->currentIndex() + 1,
        // In the request to ofd.ru, total is in a strange format, like a string of a format where 2 last digits represent decimal part of a number.
        ui->total_edit->text().toDouble() * 100,
        captcha);

    return checkContent;
}

void MainWindow::on_parseButton_clicked() {
    QString s;
    switch (ui->tabWidget->currentIndex()) {
    case 0:
        s = ui->checkContent->toPlainText();
        break;
    case 1:
        s = ui->checkContentFromImage->toPlainText();
        break;
    case 2:
        Net().get_captcha_from_ofdru();

        std::string solved_captcha = "";
        bool success = true;
        bool is_captcha_solved = true;

        do {
            SolveCaptchaDialog dialog = SolveCaptchaDialog(this, &solved_captcha);
            dialog.exec();
            is_captcha_solved = true;

            try {
                std::string check_content = makeRequestToOfd(solved_captcha);
                check = parseOfdRuAnswer(check_content);
            } catch(OfdRequestException e) {
                success = false;
                if (!strcmp(e.what(), "Incorrect captcha")) {
                    is_captcha_solved = false;
                    QMessageBox infoDialog;
                    infoDialog.setText(tr("Captcha was not solved correctly!"));
                    infoDialog.setIcon(QMessageBox::Critical);
                    infoDialog.setWindowTitle(tr("Captcha is incorrect"));
                    infoDialog.exec();
                    break;
                } else if (!strcmp(e.what(), "Internal server error")) {
                    QMessageBox infoDialog;
                    infoDialog.setText(tr("Internal server error. Please, try again later."));
                    infoDialog.setIcon(QMessageBox::Critical);
                    infoDialog.setWindowTitle(tr("Internal server error"));
                    infoDialog.exec();
                    return;
                } else if (!strcmp(e.what(), "Does not exist")) {
                    QMessageBox infoDialog;
                    infoDialog.setText(tr("Check not found. Please, ensure correctness of entered data."));
                    infoDialog.setIcon(QMessageBox::Critical);
                    infoDialog.setWindowTitle(tr("Check was not found"));
                    infoDialog.exec();
                    return;
                }
            }
        } while (!is_captcha_solved);

        if (success) {
            OutputDialog d = OutputDialog(this, check);
            d.exec();
        }

        return;
    }

    std::wstring check_plaintext = s.toStdWString();
    parser.set_module(parser.search_modules()[0]);

    std::vector<Goods> c = parser.parse(check_plaintext);

    if (c.size() == 0) {
        QMessageBox infoDialog;
        infoDialog.setText(tr("An error has occured. Check was matched incorrectly. Vector sizes are different. Please, contact the developer."));
        infoDialog.setIcon(QMessageBox::Critical);
        infoDialog.setWindowTitle(tr("Error in parsing"));
        infoDialog.exec();
        return;
    }

    for (auto& g : c) {
        check.add_goods(g);
    }

    OutputDialog d = OutputDialog(this, check);
    d.show();
    d.exec();
}

void MainWindow::on_storeType_currentIndexChanged(int index) {
    std::string module = parser.search_modules()[index];
    parser.set_module(module);
}


void MainWindow::on_preferencesButton_clicked() {
    SettingsDialog s = SettingsDialog();
    s.show();
    s.exec();
}

void MainWindow::on_chooseImageButton_ofd_clicked() {
    QString filename = QFileDialog::getOpenFileName();

	if (filename == "") {
		QMessageBox infoDialog;
        infoDialog.setText(tr("Please, select a picture where QR code that contains info about check is present"));
        infoDialog.setIcon(QMessageBox::Critical);
	    infoDialog.setWindowTitle(tr("Picture was not selected"));
		infoDialog.exec();
		return;
	}

    std::string new_text = "Selected: " + filename.toStdString();
    ui->pathLabel_ofd->setText(QString::fromStdString(new_text));

    AdjustPictureDialog dialog = AdjustPictureDialog(this, filename.toStdString());
    connect(&dialog, &AdjustPictureDialog::decodedData, this, &MainWindow::onDecodedData);
    dialog.exec();

    ui->picture_ofd->setPixmap(QPixmap(filename));
    ui->picture_ofd->setScaledContents(true);
}

void MainWindow::onDecodedData(std::string data) {
    std::string delimiter = "&";
    std::vector<std::string> dataSplit = split(data, delimiter);

    std::cout << data << std::endl;

    ui->fn_edit->setText(QString::fromStdString(dataSplit[2]));
    ui->fd_edit->setText(QString::fromStdString(dataSplit[3]));
    ui->fi_edit->setText(QString::fromStdString(dataSplit[4]));

    QString extractedDateTime = QString::fromStdString(split(dataSplit[0], "=")[1]);
    QDateTime datetime = QDateTime::fromString(extractedDateTime, "yyyyMMddThhmm");
    ui->dateTimeEdit->setDateTime(datetime);

    int type = std::stoi(split(dataSplit[5], "=")[1]);
    ui->fundIncomeCombo->setCurrentIndex(type - 1);

    std::string total = split(dataSplit[1], "=")[1];

    ui->total_edit->setText(QString::fromStdString(total));
}

void MainWindow::on_chooseImageButton_ocr_clicked()
{
    QString filename = QFileDialog::getOpenFileName();

	if (filename == "") {
		QMessageBox infoDialog;
        infoDialog.setText(tr("Please, select a picture to scan"));
        infoDialog.setIcon(QMessageBox::Critical);
	    infoDialog.setWindowTitle(tr("Picture was not selected"));
		infoDialog.exec();
		return;
	}
	
    std::string new_text = "Selected: " + filename.toStdString();
    ui->pathLabel_ocr->setText(QString::fromStdString(new_text));

    CheckImage i(filename.toStdString());
    std::string parsed = i.parse_text();

    ui->picture_ocr->setPixmap(QPixmap(filename));
    ui->picture_ocr->setScaledContents(true);
    ui->checkContentFromImage->setPlainText(QString::fromStdString(parsed));
}