Request.java

package com.lake.tahoe.models;

import com.google.android.gms.maps.model.LatLng;
import com.lake.tahoe.callbacks.ModelCallback;
import com.lake.tahoe.callbacks.ModelFindCallback;
import com.lake.tahoe.callbacks.ModelGetCallback;
import com.lake.tahoe.utils.Currency;
import com.lake.tahoe.utils.PushUtil;
import com.parse.ParseClassName;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import com.paypal.android.sdk.payments.PayPalPayment;

import java.math.BigDecimal;
import java.text.NumberFormat;

@ParseClassName("Request")
public class Request extends ParseObject {

	public enum State {

		/**
		 * Client creates a new Request
		 */
		OPEN,

		/**
		 * Vendor accepts Request
		 */
		ACTIVE,

		/**
		 * Vendor completes Request
		 */
		PENDING,

		/**
		 * Vendor receives Payment
		 */
		FULFILLED,

		/**
		 * Vendor cancels Payment
		 */
		CANCELLED

	}

	public Request() {
		super();
	}

	public Request(State state) {
		super();
		setState(state);
	}

	public User getClient() {
		return (User) getParseObject("client");
	}

	public void setClient(User client) {
		put("client", client);
	}

	public User getVendor() {
		return (User) getParseObject("vendor");
	}

	public void setVendor(User vendor) {
		if (vendor == null) remove("vendor");
		else put("vendor", vendor);
	}

	public String getTitle() {
		return getString("title");
	}

	public void setTitle(String title) {
		put("title", title);
	}

	public String getDescription() {
		return getString("description");
	}

	public void setDescription(String description) {
		put("description", description);
	}

	public int getCents() {
		return getInt("cents");
	}

	public String getDisplayDollars() {
		return Currency.getDisplayDollars(getCents());
	}

	public BigDecimal getDollars() {
		BigDecimal dollars = new BigDecimal(getCents() / 100.0);
		return dollars.setScale(2, BigDecimal.ROUND_HALF_UP);
	}

	public PayPalPayment getPaypalPayment() {
		String currency = NumberFormat.getCurrencyInstance().getCurrency().getCurrencyCode();
		return new PayPalPayment(getDollars(), currency, getTitle());
	}

	public void setCents(Integer cents) {
		put("cents", cents);
	}

	public State getState() {
		return State.valueOf(getString("state"));
	}

	public void setState(State state) {
		put("state", state.toString());
	}

	public LatLng getGoogleMapsLocation() {
		return getClient().getGoogleMapsLocation();
	}

	public static ParseQuery<Request> getRequestQuery() {
		return ParseQuery.getQuery(Request.class);
	}

	public static void findNearbyRequests(Request.State requestState, User user, ModelCallback<Request> callback) {
		ParseQuery<Request> query = Request.getRequestQuery();

		// FIXME -- join on user location for proximity querying too
		query.whereContains("state", requestState.toString());
		query.whereExists("client");
		query.include("client");
		if (user != null)
			query.whereNotEqualTo("client", user);  // exclude self requests

		// Exclude vendors -- see caveats about this query.
		// https://www.parse.com/docs/android_guide#queries
		ParseQuery<User> queryUser = User.getUserQuery();
		queryUser.whereEqualTo("type", User.Type.CLIENT.toString());
		query.whereMatchesQuery("client", queryUser);

		query.findInBackground(new ModelFindCallback<Request>(callback));
	}

	public static void getByObjectId(String requestId, ModelCallback<Request> callback) {
		ParseQuery<Request> query = Request.getRequestQuery();

		query.whereEqualTo("objectId", requestId);
		query.include("client");

		query.getFirstInBackground(new ModelGetCallback<Request>(callback));
	}

	public void saveAndPublish(PushUtil.HandlesPublish handler) {
		PushUtil.saveAndPublish(this, handler);
	}

	public void saveAndPublish() {
		PushUtil.saveAndPublish(this);
	}

}