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83 lines
3.4 KiB
83 lines
3.4 KiB
package cmpt213.assignment4.packagedeliveries.client.control;
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import cmpt213.assignment4.packagedeliveries.client.gson.extras.RuntimeTypeAdapterFactory;
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import cmpt213.assignment4.packagedeliveries.client.model.BookPackage;
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import cmpt213.assignment4.packagedeliveries.client.model.ElectronicPackage;
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import cmpt213.assignment4.packagedeliveries.client.model.PackageInfo;
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import cmpt213.assignment4.packagedeliveries.client.model.PerishablePackage;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.JsonSyntaxException;
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import com.google.gson.TypeAdapter;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonWriter;
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import java.io.IOException;
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import java.lang.reflect.Type;
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import java.time.LocalDateTime;
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import java.util.ArrayList;
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/**
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* It's a class that contains a main method that creates a TextMenu object, loads a list of packages
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* from a file, and then loops through a menu of options until the user chooses to quit
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*/
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public class PackageDeliveriesTracker {
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private static final String fileName = "list.json";
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private static final RuntimeTypeAdapterFactory<PackageInfo> r = RuntimeTypeAdapterFactory.of(PackageInfo.class, "type")
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.registerSubtype(BookPackage.class, "book")
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.registerSubtype(PerishablePackage.class, "perishable")
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.registerSubtype(ElectronicPackage.class, "electronic");
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private static final Gson gson = new GsonBuilder().registerTypeAdapter(LocalDateTime.class,
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new TypeAdapter<LocalDateTime>() {
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@Override
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public void write(JsonWriter jsonWriter,
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LocalDateTime localDateTime) throws IOException {
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jsonWriter.value(localDateTime.toString());
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}
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@Override
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public LocalDateTime read(JsonReader jsonReader) throws IOException {
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return LocalDateTime.parse(jsonReader.nextString());
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}
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}).registerTypeAdapterFactory(r).create();
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private static ArrayList<PackageInfo> packageList = new ArrayList<>();
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private static PackageDeliveriesTracker instance;
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public static PackageDeliveriesTracker getInstance() {
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if (instance == null) {
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instance = new PackageDeliveriesTracker();
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}
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return instance;
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}
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public String serializePackage(PackageInfo p) {
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Type pType = new TypeToken<PackageInfo>() {
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}.getType();
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return gson.toJson(p);
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}
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public ArrayList<PackageInfo> deserializePackageString(String gsonString) {
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try {
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System.out.println(gsonString + "deserializePackageString gsonString");
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Type pType = new TypeToken<ArrayList<PackageInfo>>() {
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}.getType();
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if (!(packageList == null)) packageList.clear();
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packageList = gson.fromJson(gsonString, pType);
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System.out.println(packageList + " --> packageList");
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if (packageList != null) {
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for (PackageInfo p : packageList) {
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if (p instanceof BookPackage) p.setType("book");
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else if (p instanceof PerishablePackage) p.setType("perishable");
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else if (p instanceof ElectronicPackage) p.setType("electronic");
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}
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}
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} catch (JsonSyntaxException e) {
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e.printStackTrace();
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}
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return packageList;
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}
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}
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