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database.js
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database.js
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/*
Filename: database.js
Version: 0.1.0
Description: Handle data manipulation, determine what data to be displayed on the screen.
*/
import firebase from 'firebase';
import {Alert} from 'react-native';
// Firebase configuration
var config = {
apiKey: "AIzaSyBxsExx8hsNe6OyQCkS-O1lrzg4zVXgNoc",
authDomain: "cmdatabase-restore.firebaseapp.com",
databaseURL: "https://cmdatabase-restore.firebaseio.com",
projectId: "cmdatabase-restore",
storageBucket: "cmdatabase-restore.appspot.com",
messagingSenderId: "486235795755"
};
// Firebase initialization
firebase.initializeApp(config);
/*
* Name: userLogin
* Parameters: email - string; user login email
* password - string; user login password
* Return:
* Error Condition: 1) Error Message indicates what went wrong
* 2) Error Inputs
* Success: 1
*/
export async function userLogin (email, password) {
var result;
await firebase.auth().signInWithEmailAndPassword(email, password).then(
function success() {
// callback with 0 indicating login success
result = 0;
}
).catch(
function failure (error) {
var errorCode = error.code;
var errorMessage = error.message;
// callback with errorMessage
result = errorMessage;
});
if (result === 0) {
var curUser = await getCurrentUserUID();
var Profile = await getProfileById(curUser);
if (Profile.current_order_as_buyer && Profile.current_order_as_buyer != -1)
addOrderStatusChangeListener(Profile.current_order_as_buyer);
}
return result;
}
/*
* Name: userSignUp
* Parameters: string: email, string: password
* Return:
* Error Condition: errorMessage
* Success: 1 represents sign in successfully
* If sign up successfully, firebase will create a default profile related to that uid
*/
export async function userSignup (email, password, name) {
var result;
await firebase.auth().createUserWithEmailAndPassword(email, password).then(
async function success(){
result = 0;
var newUID = await getCurrentUserUID();
var newProfileDirName = "Profile/" + newUID;
var ref = firebase.database().ref(newProfileDirName);
ref.set({default_mode:"Buyer", rate:5, username:name,
history:{total_num:0}, photo:"data:image/png;base64,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"});
}
).catch(
function failure(error){
var errorCode = error.code;
var errorMsg = error.message;
result = errorMsg;
}
);
return result;
}
/*
* Name: userPasswordChange
* Parameters: string: newPassword
* Return: N/A
* Error Condition: errorMessage
* Success: Password sucessfully
*/
export async function userPasswordChange(newPassword){
var user = firebase.auth().currentUser;
var newPassword = getASecureRandomPassword();
user.updatePassword(newPassword).then(function() {
// Update successful.
}).catch(function(error) {
// An error happened.
});
}
/*
* Name: displayMenu
* Parameters: None
* Return: List of pairs. [[img, TypeName]...]
* Error Condition: None
*/
export async function displayMenu () {
// access the Menu field in firebase
const firebaseRef = firebase.database().ref("Menu");
var result;
await firebaseRef.once('value', function(snapshot){
let menu = [];
let type = [];
// Find the value of the Menu field
let types = snapshot.val();
var typeName;
// loop through all types in menu
for( typeName in types){
// for each different type, get the value
let typeField = types[typeName];
type = [];
// find image and name
type.push(typeField.image);
type.push(typeName);
menu.push(type);
}
result = menu;
});
return result;
}
/*
* Name: displayType
* Parameters: string: type
* Return: an array contains each item with image, id, and name.
* @image: url
* @id: string
* @name: string
*/
export async function displayType (type) {
let firebaseRef = firebase.database().ref('Menu');
var drinks;
await firebaseRef.once('value', dataSnapshot => {
let info = [];
let result = [];
let menu = dataSnapshot.val();
var index;
for (index in menu[type].items) {
let item = menu[type].items[index];
info = [];
//let drink = {image: item.image, id: index, name: item.name}
info.push(item.image);
info.push(index);
info.push(item.name);
result.push(info);
}
drinks = result;
});
return drinks;
}
/*
* Name: displayItem
* Parameters: string: type, string: item_id
* Return:
* The array containing name, description, image.
*/
export async function displayItem (type, item_id) {
// get the direction
dir = "Menu/" + type + "/items/" + item_id;
var coffee;
await firebase.database().ref(dir).once("value", function (snapshot) {
coffee = snapshot.val();
});
return coffee;
}
/*
* Name: saveOrder
* Description: save order object to database
* Parameters: object: order
* Return:
* Error Condition: none
* Success: return order id of saved order
*/
export async function saveOrder (order) {
let orderRef = firebase.database().ref("Orders");
let order_id = 0;
await orderRef.once("value", dataSnapshot => {
order_id = dataSnapshot.val().size;
if (!order_id) {
order_id = 0;
}
order.id = order_id;
orderRef.child("items").child(order_id).set(order);
orderRef.child("size").set(order_id+1);
});
return order_id;
}
/*
* Name: createOrder
* Description: create buyer order
* Parameters: Object items, string location, string request_time
* Return: order_id
*/
export async function createOrder(orders, orderLocation, requestTime){
var buyerId = await getCurrentUserUID();
var createTime = new Date().toLocaleString('en-US', { hour12: false });
let profileRef = firebase.database().ref("Profile/" + buyerId);
let rate;
// get the rate of the buyer
await profileRef.once("value", dataSnapshot => {
if (!dataSnapshot) {
rate = -1;
} else {
rate = dataSnapshot.val().rate;
}
});
var orderObject ={
buyer_id: buyerId,
buyer_rate: rate,
carrier_id: -1,
create_time: createTime,
items: orders,
last_update_time: createTime,
location: orderLocation,
request_time: requestTime,
status: 1
}
var orderId = await saveOrder(orderObject);
profileRef.child("current_order_as_buyer").set(orderId);
addOrderStatusChangeListener(orderId);
return orderId;
}
/*
* Name: cancelByBuyer
* Description: delete order object from database
* Parameters: string: order_id
*/
export async function cancelByBuyer(order_id) {
let orderRef = firebase.database().ref("Orders/items/" + order_id);
var user_id = await getCurrentUserUID();
removeOrderStatusChangeListener(order_id);
var ref = firebase.database().ref("Profile/" + user_id);
ref.child("current_order_as_buyer").set('-1');
orderRef.once('value', dataSnapshot => {
if (dataSnapshot.val().status === 1) {
orderRef.child('status').set(-1);
}
});
}
/*
* Name: cancelByCarrier
* Description: return accepted order object to pending orders
* Parameters: string: order_id
*/
export function cancelByCarrier(order_id) {
let orderRef = firebase.database().ref("Orders/items/" + order_id);
orderRef.once('value', dataSnapshot => {
if (dataSnapshot.val().status === 2) {
orderRef.child('status').set(1);
orderRef.child('carrier_id').set('');
orderRef.child('carrier_rate').set(0);
}
});
}
/*
* Name: viewPendingOrders
* Description: This is for carrier to see all pending orders
* Parameters: object: order
* Return: An array of order_id
* Error Condition: none
* Success: N/A
*/
export async function viewPendingOrders() {
// access the Menu field in firebase
const firebaseRef = firebase.database().ref("Orders");
var pendingOrders;
let cur_id = await getCurrentUserUID();
await firebaseRef.once('value', function(snapshot){
// Find the value of Orders field
let orders = snapshot.val();
orders = orders.items;
pendingOrders=[];
var order_id;
// loop through all types in orders
for( order_id in orders){
// check if it is a pending order
let order = orders[order_id];
if( order.status == 1 && order.buyer_id != cur_id){
pendingOrders.push(order_id);
}
}
}, function(errorObject){
alert("failed:" + errorObject.code);
});
return pendingOrders;
}
/*
* Name: viewAllOrders
* Description: view all orders that is pending
* Parameters: None.
* Return: All orders that is pending.
*/
export async function viewAllOrders() {
// access the Menu field in firebase
const firebaseRef = firebase.database().ref("Orders");
var pendingOrders;
let cur_id = await getCurrentUserUID();
await firebaseRef.once('value', function(snapshot){
// Find the value of Orders field
let orders = snapshot.val();
orders = orders.items;
pendingOrders=[];
var order_id;
// loop through all types in orders
for( order_id in orders){
// check if it is a pending order
let order = orders[order_id];
pendingOrders.push(order_id);
}
}, function(errorObject){
alert("failed:" + errorObject.code);
});
return pendingOrders;
}
/*
* Name: updateOrderStatus
* Description: update order status
* Parameters: string: order_id
* Return:
* Error Condition: none
* Success: update the order status
*/
export async function updateOrderStatus(order_id) {
let orderRef = firebase.database().ref("Orders/items/" + order_id);
let status = -1;
await orderRef.once("value", dataSnapshot => {
if (!dataSnapshot) {
return;
} else {
status = dataSnapshot.val().status;
status = Math.min(++status, 3);
orderRef.child("status").set(status);
}
updateLastTime(order_id);
});
}
/*
* Name: viewOrderDetailById
* Parameters: string: order_id
* Return: object orderInformation
* The json containing the information of the order corresponding to the order_id
*/
export async function viewOrderDetailById (order_id) {
// get the direction
dir = "Orders/items/" + order_id;
var orderInformation;
await firebase.database().ref(dir).once("value", function (snapshot) {
orderInformation = snapshot.val();
});
return orderInformation;
}
/*
* Name: getOrderLocationById
* Parameters: string: order_id
* Return: return location string,
*/
export async function getOrderLocationById (order_id){
// get the direction
dir = "Orders/items/" + order_id;
var location;
await firebase.database().ref(dir).once("value", function (snapshot){
location = snapshot.val().location;
location = location.split(' ').join('%20');
});
return location;
}
/*
* Name: getProfileDetailById
* Parameters: string: profile_id
* Return: object profile
*/
export async function getProfileDetailById(profile_id){
dir = "Profile/" + profile_id;
var result;
await firebase.database().ref(dir).once("value", function(snapshot){
result = snapshot.val();
})
return result;
}
/*
* Name: acceptOrder
* Parameter: string:order_id string:carrier_id
* Return: -1 if the order is not found or already accepted by others.
* If the current order is still pending, the carrier will take the order.
* The database will update the carrier_id entry with the current carrier_id.
* If the order is already taken by others, it will return -1.
*/
export async function acceptOrder(order_id){
var carrier_id = await getCurrentUserUID();
let orderRef = firebase.database().ref("Orders/items/" + order_id);
let status = -1;
await orderRef.once("value", dataSnapshot => {
// the order is already accpeted by others if status is not 1
if (dataSnapshot.val().status != 1) {
alert("The order is already accepted by others. Try refresh!");
}
// update the carrier_id and status of the order.
else {
orderRef.child("carrier_id").set(carrier_id);
orderRef.child("status").set(2);
}
updateLastTime(order_id);
});
}
/*
* Name: getDistance
* Parameters: string: starting location, string destination, order_id
* Return: a pair (location distance, order_id)
*
* Parameter: string: origin string: destination string: id
* Return: the distance between origin location and destination
*/
export async function getDistance(origin, destination, id) {
return new Promise(function(resolve,reject){
const xhr = new XMLHttpRequest();
const url = "https://maps.googleapis.com/maps/api/directions/json?origin="+origin+"&destination="+destination+"&mode=walking";
xhr.responseType = 'json';
//let orderWithDist;
xhr.onreadystatechange = function () {
if (xhr.readyState === XMLHttpRequest.DONE) {
if( xhr.response.routes[0] != undefined){
var orderWithDist = {dist: xhr.response.routes[0].legs[0].distance.value, order_id: id};
resolve(orderWithDist);
}else{
alert("Please choose another location");
}
}
};
xhr.ontimeout = function() {
reject("timeout");
}
xhr.open('GET', url);
xhr.send();
});
}
/*
* Name: checkPlace
* Parameters: string: starting destination: the destination to be check.
*
* Check if the destination is in UCSD.
* Return: true if it is in UCSD, otherwise false.
*/
export async function checkPlace(destination) {
return new Promise(function(resolve,reject){
const xhr = new XMLHttpRequest();
const url = "https://maps.googleapis.com/maps/api/directions/json?origin=geisel libaray&destination="+destination+"&mode=walking";
xhr.responseType = 'json';
//let orderWithDist;
xhr.onreadystatechange = function () {
if (xhr.readyState === XMLHttpRequest.DONE) {
if( xhr.response.routes[0] != undefined){
var test = true;
resolve(test);
}else{
var test = false;
resolve(test);
}
}
};
xhr.ontimeout = function() {
reject("timeout");
}
xhr.open('GET', url);
xhr.send();
});
}
/*
* Helper function used to compare two orders with ids in distance.
*/
function compare (a, b){
if (a.dist > b.dist){
return 1;
}
else if (a.dist < b.dist){
return -1;
}
return 0;
}
/*
* Name: sortOrder
* Parameters: string: origin
* Return: array containing order ids
* Sort the pending order based on some rules (for now, we are only sorting it with
* distance from the origin)
*/
export async function sortOrdersByDistance(origin) {
let orders = await viewPendingOrders();
let ordersWithDistance = [];
var current;
const loc = origin.split(' ').join('%20'); // initial location
for (let i = 0; i < orders.length; i++) {
current = await getDistance(loc, await getOrderLocationById(orders[i]), orders[i]);
await ordersWithDistance.push(current);
}
await ordersWithDistance.sort(compare);
let ordersResult = [];
for (let j = 0; j < ordersWithDistance.length; j++){
await ordersResult.push(ordersWithDistance[j].order_id);
}
return ordersResult;
}
export async function sortOrdersByRequestTime() {
let orders = await viewPendingOrders();
// build array with each object containing id and request_time
let ordersWithRequestTime = [];
for (let i = 0; i < orders.length; i++) {
var orderRef = firebase.database().ref("Orders/items/"+orders[i]);
await orderRef.once("value", dataSnapshot => {
ordersWithRequestTime.push({orderId:orders[i],requestTime:dataSnapshot.val().request_time});
});
}
await ordersWithRequestTime.sort(compareByRequestTime);
// build the result array
let resList = [];
for (var j = 0; j < ordersWithRequestTime.length; j++){
resList.push(ordersWithRequestTime[j].orderId);
}
return resList;
}
/*
* Name: completeOrder
* Parameter: string: order_id string: user_id
* Return: N/A
*/
export async function completeOrder(order_id) {
var user_id = await getCurrentUserUID();
let profileRef = firebase.database().ref("Profile/" + user_id + "/history/");
await profileRef.once("value", snapshot => {
index = snapshot.val().total_num;
});
let orderRef = firebase.database().ref("Orders/items/" + order_id);
await orderRef.once("value", dataSnapshot => {
// current order status is 4: completedByBuyer, then carrier click complete
// update status to be 6: completed
if (dataSnapshot.val().status === 4 && dataSnapshot.val().carrier_id == user_id) {
orderRef.child("status").set(6);
profileRef.child("orders").child(index).set(order_id);
profileRef.child("total_num").set(++index);
}
// current order status is 5: completedByCarrier, then buyer click complete
// update status to be 6: completed
else if (dataSnapshot.val().status === 5 && dataSnapshot.val().buyer_id == user_id) {
ref = firebase.database().ref("Profile/" + user_id);
ref.child("current_order_as_buyer").set('-1');
removeOrderStatusChangeListener(order_id);
orderRef.child("status").set(6);
profileRef.child("orders").child(index).set(order_id);
profileRef.child("total_num").set(++index);
}
// current order status is 3: delivering, then buyer click complete
// update status to be 4: completedByBuyer
else if (dataSnapshot.val().status === 3 && dataSnapshot.val().buyer_id == user_id){
ref = firebase.database().ref("Profile/" + user_id);
ref.child("current_order_as_buyer").set('-1');
removeOrderStatusChangeListener(order_id);
orderRef.child("status").set(4);
profileRef.child("orders").child(index).set(order_id);
profileRef.child("total_num").set(++index);
}
// current order status is 3: delivering, then carrier click complete
// update status to be 5: completedByCarrier
else if (dataSnapshot.val().status === 3 && dataSnapshot.val().carrier_id == user_id){
orderRef.child("status").set(5);
profileRef.child("orders").child(index).set(order_id);
profileRef.child("total_num").set(++index);
}
updateLastTime(order_id);
});
}
/*
* Name: changeDefaultMode
* Parameters: string id, string mode
* Return: N/A
* change the default mode to given mode.
*/
export async function changeDefaultMode(id, mode) {
let profileRef = firebase.database().ref("Profile/"+id);
let defaultMode;
await profileRef.once("value", dataSnapshot => {
profileRef.child("default_mode").set(mode);
alert("Change Successful!");
}
);
}
/*
* Name: getDefaultMode
* Parameters: void
* Return: N/A
* get deault mode
*/
export async function getDefaultMode(){
var defaultMode;
let profileId = await getCurrentUserUID();
let profileRef = firebase.database().ref("Profile/" + profileId +"/default_mode");
await profileRef.once("value", dataSnapshot => {
defaultMode = dataSnapshot.val();
});
return defaultMode;
}
/*
* Name: changeProfilePhoto
* Parameters: string id, string url
* Return: N/A
* update user profile photo
*/
export async function changeProfilePhoto(id, url) {
let profileRef = firebase.database().ref("Profile/"+id);
await profileRef.once("value", dataSnapshot => {
profileRef.child("photo").set(url);
});
}
/*
* Name: logout
* Parameters: N/A
* Return: 0 if success, otherwise return error message
* logout the user
*/
export async function logout() {
var curUser = await getCurrentUserUID();
var Profile = await getProfileById(curUser);
if (Profile.current_order_as_buyer != null && Profile.current_order_as_buyer != -1)
removeOrderStatusChangeListener(Profile.current_order_as_buyer);
var result;
await firebase.auth().signOut().then(
function success(){
result = 0;
}
).catch(
function failure(error){
var errorCode = error.code;
var errorMsg = error.message;
result = errorMsg;
}
);
return result;
}
/*
* Name: displayOrderHistory
* Parameters: string user_id
* Return: order history
* return order history of the given user
*/
export async function displayOrderHistory(user_id) {
// get the directory
let dir = "Profile/" + user_id + "/history";
let orderHis;
await firebase.database().ref(dir).once("value", function (snapshot) {
orderHis = snapshot.val();
});
return orderHis;
}
/*
* Name: getProfileById
* Parameters: string user_id
* Return: object profile
* return profile information of the given user
*/
export async function getProfileById(user_id) {
// get the directory
let dir = "Profile/" + user_id;
let profile;
await firebase.database().ref(dir).once("value", function (snapshot) {
profile = snapshot.val();
});
return profile;
}
/*
* Name: updateDelivery
* Parameters: order_id,
* Return: database change
* update user profile photo
*/
export async function updateLastTime(order_id){
let dir;
dir = "Orders/items/" + order_id + "/last_update_time";
let update_time = firebase.database().ref(dir);
var createTime = new Date().toLocaleString('en-US', { hour12: false });
update_time.set(createTime);
}
/*
* Name: updateOrderRate
* Parameters: string order_id, string rate, boolean isBuyer, string user_id
* Return: N/A
* update rate in order and rate in given user
*/
export async function updateOrderRate(order_id, rate, isBuyer, user_id) {
let orderDir;
if (isBuyer) { // get direction
orderDir = "Orders/items/" + order_id + "/buyer_rate";
} else {
orderDir = "Orders/items/" + order_id + "/carrier_rate";
}
let orderRef = firebase.database().ref(orderDir);
orderRef.set(rate);
let profileDir = "Profile/" + user_id;
let prevRate;
let totalNum;
await firebase.database().ref(profileDir).once("value", function (snapshot) {
user = snapshot.val();
prevRate = user.rate;
totalNum = user.history.total_num;
});
let newRate = (parseFloat(prevRate) * (parseInt(totalNum)-1) + parseFloat(rate)) / (parseInt(totalNum));
let rateRef = firebase.database().ref(profileDir + "/rate");
rateRef.set(newRate);
}
/*
* Name: changeUserName
* Parameters: string: user_id string:newName
* Return: none
* change the name of the user
*/
export async function changeUserName(user_id, newName){
let profileRef = firebase.database().ref("Profile/" + user_id);
var result;
await profileRef.once("value", dataSnapshot => {
if (!dataSnapshot) {
result = -1;
} else {
profileRef.child("username").set(newName);
result = 0;
}
});
return result;
}
/*
* Name: setPhoneNum
* Parameter: string: phoneNum
*/
export async function setPhoneNum(phoneNum) {
let profile_id = await getCurrentUserUID();
let dir = firebase.database().ref("Profile/" + profile_id);
dir.child("phone").set(phoneNum);
}
/*
* Name: getCurrentUserEmail
* Description: get the email of current user
* Parameters: None.
* Return: The email of current user
*/
export function getCurrentUserEmail(){
var currentUser = firebase.auth().currentUser;
if (currentUser != null){
return currentUser.email;
}
return -1;
}
/*
* Name: getCurrentUserUID
* Parameter: None
* Return: the uid of current user.
* get the current user uid
*/
export function getCurrentUserUID(){
var currentUser = firebase.auth().currentUser;
if (currentUser != null){
return currentUser.uid;
}
return -1;
}
/*
* Helper function used to compare two orders with time.
* NOTICE: should be 24 hours format
*/
function compareByRequestTime (a, b){
// initialize array containing hours and minutes
var aTime = a.requestTime.split(":");
var bTime = b.requestTime.split(":");
// compare hours
if (aTime[0] > bTime[0]){
return 1;
}
else if (aTime[0] < bTime[0]){
return -1;
}
// compare minutes
else if (aTime[1] > bTime[1]){
return 1;
}
else if (aTime[1] < bTime[1]){
return -1;
}
return 0;
}
/*
* Name: getItemDetailWithOnlyId
* Parameter: itemId
* Return: the json containing item details
* this function allows us to get item details with only id
*/
export async function getItemDetailWithOnlyId(itemId) {
var dict = {HC:"Hot Coffees",
DR:"Drinks",
FR:"Frappuccino",
CC:"Cold Coffees",
HT:"Hot Teas",
IT:"Iced Teas"};
var type = dict[itemId.substring(0,2)];
var itemDetail = await displayItem(type, itemId);
return itemDetail;
}
/*
* Name: addOrderStatusChangeListener
* Description: add a listener to the given order ID so that the user will be notified when the order is updated.
* Parameters: order_id
*/
export function addOrderStatusChangeListener(orderId){
ref = firebase.database().ref("Orders/items/" + orderId +"/status");
ref.on('value', statusUpdated);
}
/*
* Name: removeOrderStatusChangeListener
* Description: remove a listener of the given order ID so that the user will not be notified when the order is updated
* any more.
* Parameters: order_id
*/
export function removeOrderStatusChangeListener(orderId){
ref = firebase.database().ref("Orders/items/" + orderId +"/status");
ref.off('value', statusUpdated);
}
/*
* Name: statusUpdated
* Description: notification when the order is updated
* Parameters: snapshot.
*/
function statusUpdated(snapshot) {
var changedChild = snapshot.val();
if (changedChild === 2 && changedChild != 4 && changedChild != -1) {
Alert.alert("Notification", "Someone just accepted your order!\n Please refresh the page!");
}
else if (changedChild != 1 && changedChild != 4 && changedChild != -1) {
Alert.alert("Notification", "Your Order has been updated!\n Please refresh the page! ");
}
}
/*
* Name: randomCoffee
* Description: generate a random coffee
* Parameters: None.
* Return: a random coffee object.
*/
export async function randomCoffee() {
// random an integer for type
let type = Math.floor(Math.random() * 6);
// random an integer for item
let item = Math.floor(Math.random() * 9) + 1;
let hotTea = Math.floor(Math.random() * 6) + 1;
let typeRef;
let prefix;
if (type === 0) {
typeRef = 'Cold Coffees';
prefix = 'CC';
} else if (type === 1) {
typeRef = 'Drinks';
prefix = 'DR';
} else if (type === 2) {
typeRef = 'Frappuccino';
prefix = 'FR';
} else if (type === 3) {
typeRef = 'Hot Coffees';
prefix = 'HC';
} else if (type === 4) {
typeRef = 'Hot Teas';
prefix = 'HT';
} else if (type === 5) {
typeRef = 'Iced Teas';
prefix = 'IT';
}
let dir;
if (typeRef === 'Hot Teas') {
dir = "Menu/" + typeRef + "/items/" + 'HT' + '0' + hotTea;
}
else {
dir = "Menu/" + typeRef + "/items/" + prefix + '0' + item;
}
var coffee;
await firebase.database().ref(dir).once("value", function (snapshot) {
coffee = snapshot.val();
});
return coffee;
}