#ifndef ATTRIBUTE_DIALOG_H
#define ATTRIBUTE_DIALOG_H

#include <QIntValidator>
#include <QPushButton>
#include <QComboBox>
#include <QGroupBox>
#include <QRadioButton>
#include <QDialog>
#include <QLineEdit>
#include <QLabel>
#include <QVBoxLayout>
#include <utility>
#include <comdel/domain/instanceattribute.h>

#include <comdel/domain/value.h>
#include "comdel/domain/comdelvalidator.h"

namespace display {

class AttributeDialog: public QDialog {
    domain::Value value;

    long long int parseInt(std::string expression) {
        try {
            if (expression.size() > 2) {
                if (expression.substr(0, 2) == "0x") {
                    return std::stoll(expression, 0, 16);
                } else if (expression.substr(0, 2) == "0b") {
                    return std::stoll(expression, 0, 2);
                } else {
                    return std::stoll(expression, 0, 10);
                }
            } else {
                return std::stoll(expression, 0, 10);
            }
        } catch (std::exception &e) {
            return 0;
        }
    }

    domain::InstanceAttribute* attributeValue;

public:
    AttributeDialog(domain::InstanceAttribute *attribute) {

        setAttribute(Qt::WA_DeleteOnClose);

        attributeValue = attribute;

        this->setWindowTitle(QString::fromStdString("Izmjeni " + attribute->attribute.getName()));

        auto layout = new QVBoxLayout(this);
        this->setLayout(layout);
        auto popup = *attribute->attribute.getPopup();

        layout->addWidget(new QLabel(popup.getTitle().c_str()));
        layout->addWidget(new QLabel(popup.getText().c_str()));

        auto type = attribute->attribute.getDefault().getType();
        value = attribute->value;

        if(attribute->attribute.getPopup()->isEnumerated()) {
            auto* combo = new QComboBox(this);
            auto enumeration = attribute->attribute.getPopup()->getEnumeration();
            for(auto entry: enumeration) {
                combo->addItem(QString::fromStdString(entry.getName()), QVariant::fromValue(NULL));
            }

            connect(combo, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &AttributeDialog::onEnumerationChanged);
            layout->addWidget(combo);

            for(int i=0; i<enumeration.size(); i++) {
                if(attributeValue->value.equals(enumeration[i].getValue())) {
                    combo->setCurrentIndex(i);
                    break;
                }
            }

        } else if(!(type == domain::Value::ValueType::WIRE_REFERENCE || type == domain::Value::ValueType::BOOL)) {

            auto edit = new QLineEdit(this);
            connect(edit, &QLineEdit::textChanged, this, &AttributeDialog::onTextChanged);
            layout->addWidget(edit);

            switch (attribute->attribute.getDefault().getType()) {
                case domain::Value::ValueType::INT:
                    edit->setValidator(new QIntValidator(-10000000, 10000000, edit));
                    edit->insert(std::to_string(attribute->value.asInt()).c_str());
                    break;
                case domain::Value::ValueType::STRING:
                    edit->insert(attribute->value.asString().c_str());
                    break;
            }

        } else if(type == domain::Value::ValueType::BOOL) {
            auto *group = new QGroupBox(this);

            auto *radioLayout = new QHBoxLayout(group);
            group->setLayout(radioLayout);

            auto isTrue = new QRadioButton("true", group);
            connect(isTrue, &QRadioButton::clicked, [this]() {
                this->value = domain::Value::fromBool(true);
            });
            auto isFalse = new QRadioButton("false", group);
            connect(isFalse, &QRadioButton::clicked, [this]() {
                this->value = domain::Value::fromBool(false);
            });

            if(attribute->value.asBool()) {
                isTrue->setChecked(true);
            } else {
                isFalse->setChecked(true);
            }

            radioLayout->addWidget(isTrue);
            radioLayout->addWidget(isFalse);
            layout->addWidget(group);
        }

        auto button = new QPushButton("Ažuriraj");
        connect(button, &QPushButton::clicked, this, &AttributeDialog::onUpdate);

        layout->addWidget(button);
    }

public slots:
    void onTextChanged(const QString& string) {
        switch (value.getType()) {
            case domain::Value::STRING:
                value.setString(string.toStdString());
            break;
            case domain::Value::INT:
                value = domain::Value::fromInt(parseInt(string.toStdString()));
        }
    };

    void onEnumerationChanged(int index) {
        value = attributeValue->attribute.getPopup()->getEnumeration()[index].getValue();
    }

    void onUpdate();

};

    class ErrorDialog: public QDialog {

    public:
        ErrorDialog(std::vector<domain::ValidationError> errors) {

            setAttribute(Qt::WA_DeleteOnClose);

            this->setWindowTitle("Greške");

            auto layout = new QVBoxLayout(this);
            this->setLayout(layout);

            for(auto& err: errors) {
                layout->addWidget(new QLabel(QString::fromStdString(err.message), this));
            }

        }
    };

    class WarningDialog: public QDialog {

    public:
        WarningDialog(domain::ValidationError error) {

            setAttribute(Qt::WA_DeleteOnClose);

            this->setWindowTitle("Upozorenje");

            auto layout = new QVBoxLayout(this);
            this->setLayout(layout);

            layout->addWidget(new QLabel(QString::fromStdString(error.message), this));

            auto buttonLayout = new QHBoxLayout(this);

            auto okButton = new QPushButton("U redu", this);
            auto cancelButton = new QPushButton("Odustani", this);

            connect(okButton, &QPushButton::clicked, [this]() { accept(); });
            connect(cancelButton, &QPushButton::clicked, [this]() { reject(); });

            buttonLayout->addWidget(okButton);
            buttonLayout->addWidget(cancelButton);

            layout->addItem(buttonLayout);
        }
    };


}

#endif //ATTRIBUTE_DIALOG_H