package nordh.xyz;

import java.io.IOException;
import java.util.List;
import java.util.stream.Collector;
import java.util.stream.Collectors;

import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Label;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.control.RadioButton;
import javafx.scene.control.Toggle;
import javafx.scene.control.ToggleButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import nordh.xyz.Database.DatabaseConnection;
import nordh.xyz.objects.Recepie;

/**
 * Denna ska planera X rätter. (Default 5) Rätterna ska vara varierade, t.ex. 1
 * pasta, 1 fisk, 1 gryta/soppa osv.. Den ska i framtiden hålla koll på om man
 * haft receptet tidigare och inte ge samma igen. Man ska kunna betygsätta
 * recepten i efterhand (barn, vuxen.. eller varje familjemedlem)
 * 
 * <p>
 * == Kanske för en egen panel==
 * </p>
 * <p>
 * Det måste finna ett sätt att klassa maträtterna, och spara detta i en
 * databas. om det är Vegetariskt, Veganskt, pasta, fisk, soppa, efterrätt,
 * huvudrätt.. någon form av taggning.
 * </p>
 * 
 */
public class PlannerController {

    @FXML
    Pane recepiePane;
    @FXML
    ListView<RecepieListViewItem> generatedRecepiesListView;
    @FXML
    VBox generateSettingsVBox;
    protected boolean andSelected = true;

    @FXML
    public void initialize() {
        generatedRecepiesListView.getSelectionModel().selectedItemProperty().addListener((event) -> {
            updateRecepieView(generatedRecepiesListView.getSelectionModel().getSelectedItem());
        });

        generatedRecepiesListView.setCellFactory(param -> new ListCell<RecepieListViewItem>() {
            protected void updateItem(RecepieListViewItem item, boolean empty) {
                super.updateItem(item, empty);
                if (empty || item == null) {
                    // EMPTY
                } else {
                    setGraphic(item.getGui());
                }
            };
        });

        generateSettingsPanel();
    }

    private void generateSettingsPanel() {
        List<String> tags = DatabaseConnection.getInstance().getTags();

        ToggleGroup buttonGroup = new ToggleGroup();
        HBox buttonBox = new HBox();

        buttonBox.setPadding(new Insets(10d));

        RadioButton andRadiobutton = new RadioButton("AND");
        RadioButton orRadiobutton = new RadioButton("OR");
        andRadiobutton.setUserData("AND");
        orRadiobutton.setUserData("OR");
        andRadiobutton.setSelected(true);

        andRadiobutton.setToggleGroup(buttonGroup);
        orRadiobutton.setToggleGroup(buttonGroup);

        buttonBox.getChildren().addAll(andRadiobutton, orRadiobutton);

        generateSettingsVBox.getChildren().add(buttonBox);

        buttonGroup.selectedToggleProperty().addListener(new ChangeListener<Toggle>() {

            @Override
            public void changed(ObservableValue<? extends Toggle> ov, Toggle oldValue, Toggle newValue) {
                andSelected = newValue.getUserData().equals("AND");
            }

        });

        for (String tag : tags) {
            generateSettingsVBox.getChildren().add(new CheckBox(tag));
        }
    }

    @FXML
    private void switchToMain() throws IOException {
        App.setRoot("main");
    }

    @FXML
    private void GenerateRecepie() {
        ObservableList<Node> children = generateSettingsVBox.getChildren();
        List<CheckBox> selectedBoxs = children.stream().filter(p -> p instanceof CheckBox).map(m -> (CheckBox) m)
                .filter(p -> p.isSelected()).collect(Collectors.toList());
        if (selectedBoxs.size() == 0) {
            addRandomRecepieToListView();
        } else {
            addRandomRecepieToListView(selectedBoxs);
        }
    }

    private void addRandomRecepieToListView(List<CheckBox> selectedBoxs) {
        List<String> selectedTags = selectedBoxs.stream().map(m -> m.getText()).collect(Collectors.toList());
        Recepie r = DatabaseConnection.getInstance().getRandomRecepie(selectedTags, andSelected);
        int counter = 100;
        boolean failed = false;
        if (r == null) {
            failed = true;
            showNoRecepiesAlert();
        } else {
            while (generatedRecepiesListView.getItems().stream().map(ri -> ri.getRecepie().getName())
                    .collect(Collectors.toList()).contains(r.getName())) {
                r = DatabaseConnection.getInstance().getRandomRecepie(selectedTags, andSelected);
                if (r == null || counter-- <= 0) {
                    showNoRecepiesAlert();
                    failed = true;
                    break;
                }
            }
        }
        if (!failed) {
            generatedRecepiesListView.getItems().add(new RecepieListViewItem(r));
        }
    }

    private void showNoRecepiesAlert() {
        Alert alert = new Alert(AlertType.INFORMATION);
        alert.setContentText("There are no more recepies");
        alert.show();
    }

    private void addRandomRecepieToListView() {
        Recepie r = DatabaseConnection.getInstance().getRandomRecepie();
        int counter = 100;
        boolean failed = false;
        while (generatedRecepiesListView.getItems().stream().map(ri -> ri.getRecepie().getName())
                .collect(Collectors.toList()).contains(r.getName())) {
            r = DatabaseConnection.getInstance().getRandomRecepie();
            if (r == null || counter-- <= 0) {
                showNoRecepiesAlert();
                failed = true;
                break;
            }
        }
        if (!failed) {
            generatedRecepiesListView.getItems().add(new RecepieListViewItem(r));
        }
    }

    private void updateRecepieView(RecepieListViewItem r) {
        recepiePane.getChildren().clear();
        if (r != null) {
            recepiePane.getChildren().add(r.getRecepie().getGui());
        }
    }

    private class RecepieListViewItem {
        Recepie r;
        Button rerollButton;

        RecepieListViewItem(Recepie r) {
            this.r = r;
            rerollButton = new Button();
            Image img = new Image("images/recycleArrowImageShrunk.jpg");
            ImageView imgView = new ImageView(img);
            imgView.prefHeight(20);
            imgView.prefWidth(20);
            imgView.maxHeight(20);
            imgView.maxWidth(20);
            rerollButton.setGraphic(imgView);

            rerollButton.setOnMouseClicked((event) -> {
                generatedRecepiesListView.getItems().remove(this);
                GenerateRecepie();
            });
        }

        public Recepie getRecepie() {
            return r;
        }

        public Node getGui() {
            HBox result = new HBox();
            if (r == null || r.getName() == null || r.getName().equals("")) {
                return result;
            }
            HBox.setHgrow(result, Priority.ALWAYS);
            Label recepieName = new Label(r.toString());
            recepieName.setPrefWidth(150d);
            HBox.setHgrow(recepieName, Priority.ALWAYS);
            result.getChildren().addAll(recepieName, rerollButton);

            return result;
        }
    }
}