Base.java

package co.gem.round;

import co.gem.round.patchboard.Client;
import co.gem.round.patchboard.Resource;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

import java.io.IOException;
import java.util.Map;

/**
 * Base class for building Gem API singleton objects.  Simplifies interactions with the json resources
 *
 * @author Julian Vergel de Dios (julian@gem.co) on 12/18/14.
 */
public class Base {
    protected Resource resource;
    protected Round round;

    public static final String DEFAULT_ACTION = "get";

    public Base() {}

    public Base(String url, Round round, String resourceName) {
        this.round = round;
        resource = this.round.patchboardClient().resources(resourceName, url);
    }

    public Base(Resource resource, Round round) {
        this.resource = resource;
        this.round = round;
    }

    public Base(Resource resource, Round round, JsonObject attributes) {
        this(resource, round);

        if (attributes != null) {
            for (Map.Entry<String, JsonElement> entry : attributes.entrySet()) {
                this.resource.attributes().add(entry.getKey(), entry.getValue());
            }
        }
    }

    public void fetch() throws Client.UnexpectedStatusCodeException, IOException {
        resource = resource.action(DEFAULT_ACTION);
    }

    public String key() {
        return getString("key");
    }

    public String url() { return resource.url(); }

    public Resource resource() {
        return resource;
    }

    public JsonElement getAttribute(String key) {
        if (resource.attributes().has(key))
            return resource.attributes().get(key);
        return null;
    }

    public String getString(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsString();
    }

    public Integer getInt(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsInt();
    }

    public Double getDouble(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsDouble();
    }

    public Float getFloat(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsFloat();
    }

    public Long getLong(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsLong();
    }

    public JsonObject getObject(String key) {
        if (getAttribute(key) == null) return null;
        return getAttribute(key).getAsJsonObject();
    }
}