package controllers;

import java.net.URL;
import java.time.Instant;
import java.time.LocalDate;
import java.time.Period;
import java.time.ZoneId;
import java.util.Date;
import java.util.List;
import java.util.ResourceBundle;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.embed.swing.SwingFXUtils;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.DatePicker;
import javafx.scene.control.ListView;
import javafx.scene.control.TableView;
import javafx.scene.image.ImageView;
import util.DatabaseManager;
import model.*;

public class MainController implements Initializable{

	@FXML
	private DatePicker selectedDate;
	@FXML
	private ListView<String> appointmentsListView;
	@FXML
	private ListView<String> animalListView;
	@FXML
	private ImageView animalPhoto;
	@FXML
	private ListView<String> animalDiagnostics;
	@FXML
	private Button addDiagnosticButton;

	private DatabaseManager dbManager = new DatabaseManager();
	private List<Appointment> currentlySelectedAppointments;

	public void populateAppointmentList() {
		LocalDate localDate = selectedDate.getValue();
		Instant instant = Instant.from(localDate.atStartOfDay(ZoneId.systemDefault()));
		Date date = Date.from(instant);
		currentlySelectedAppointments = dbManager.getAppointmentsByDate(date);
		ObservableList<String> appointmentsDate = FXCollections.observableArrayList();
		for(Appointment appointment : currentlySelectedAppointments) {
			appointmentsDate.add(appointment.getAppointmentDate().toString());
		}
		appointmentsListView.setItems(appointmentsDate);
		appointmentsListView.refresh();
	}

	public void populateAnimalList() {
		String selectedAppointmentDate = appointmentsListView.getSelectionModel().getSelectedItem();
		for(Appointment appointment : currentlySelectedAppointments) {
			if(selectedAppointmentDate == appointment.getAppointmentDate().toString()) {
				Animal animal = appointment.getAnimal();
				LocalDate animalBirthdate = animal.getAnimalBirthday().toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
				ObservableList<String> animalTraits = FXCollections.observableArrayList();
				animalTraits.add("Nume: " + animal.getAnimalName());
				animalTraits.add("Greutate: " + animal.getAnimalWeight() + " kg");
				animalTraits.add("Varsta: " + (Period.between(LocalDate.now(), animalBirthdate).getYears()));
				animalTraits.add("Proprietar: " + animal.getAnimalOwner());
				animalTraits.add("Telefon: " + animal.getOwnerPhone());
				animalListView.setItems(animalTraits);
				animalListView.refresh();
				try {
					BufferedImage animalImage = ImageIO.read(new ByteArrayInputStream(animal.getAnimalPhoto()));
					animalPhoto.setImage(SwingFXUtils.toFXImage(animalImage, null));
				}
				catch(IOException e) {
					e.printStackTrace();
				}
				break;
			}
		}
	}

	public void populateDiagnosticList() {
		String selectedAppointmentDate = appointmentsListView.getSelectionModel().getSelectedItem();
		for(Appointment appointment : currentlySelectedAppointments) {
			if(selectedAppointmentDate == appointment.getAppointmentDate().toString()) {
				Animal animal = appointment.getAnimal();
				List<Diagnostic> diagnosticsList = dbManager.getDiagnosticsOfAnimal(animal.getAnimalId());
				ObservableList<String> diagnosticsText = FXCollections.observableArrayList();
				for(Diagnostic diagnostic : diagnosticsList) {
					diagnosticsText.add(diagnostic.getDiagnosticTitle() + " " + diagnostic.getDiagnosticText());
				}
				animalDiagnostics.setItems(diagnosticsText);
				animalDiagnostics.refresh();
				break;
			}
		}
	}

	public void populateAnimalLists() {
		populateAnimalList();
		populateDiagnosticList();
	}

	@Override
	public void initialize(URL location, ResourceBundle resources) {
		selectedDate.setValue(LocalDate.now());
		populateAppointmentList();
	}

}