I have two separate files, the first being a component (List.js) that uses the second (APIService.js) to fetch different APIs. To correct fetch, the URL needs to receive global variables. Right now, I am trying to redefine these variables from a function in the APIService file without success. Variables are being redefined in APIService.js just before the API calls comment.
I have two questions:
Why is the global variable naptanId not being redefined?
Would be possible to define and pass these variables from the component?
Pseudo-code
Detects beacon
Redefine naptanId
Component fetch API using recently defined variable
API call is done
Data is passed back to Component
Set states
List.js
componentDidMount() {
// Executes first function
APIService._fetchStopPoint((resp1) => {
console.log("Stoppoint", resp1)
// ... and set the bus state with the first response
this.setState({
bus: resp1
});
// ... based on the response, convert array to string
const lines = (resp1.lines.map((line) => line.name)).toString()
// ... pass lines to sencond function
APIService._fetchArrivalTimes(lines, (resp2) => {
// .. and set the tube state with the second response
this.setState({
isLoading: false,
tube: resp2
});
});
});
}
APIService.js
// Variables
// ***********************************************************************
let naptanId = undefined
let lines = undefined
let ice = '59333'
let mint = '57011'
let blueberry = '27686'
let nearestBeacon = undefined;
let newBeaconId = undefined;
let setIce = false;
let setBlueberry = false;
let setMint = false;
// Beacon detection
// ***********************************************************************
const region = {
identifier: 'Estimotes',
uuid: '354A97D8-9CAF-0DC7-CE0E-02352EBE90CD',
};
// Request for authorization while the app is open
Beacons.requestWhenInUseAuthorization();
Beacons.startMonitoringForRegion(region);
Beacons.startRangingBeaconsInRegion(region);
Beacons.startUpdatingLocation();
// Listen for beacon changes
const subscription = DeviceEventEmitter.addListener('beaconsDidRange', (data) => {
const ibeacons = data.beacons
// var lowestAccuracySeen = 0.5;
let lowestAccuracySeen = "immediate"
// Check if beacons are updating
if (ibeacons && ibeacons.length > 0) {
// Loop through beacons array
for (var i = 0; i < ibeacons.length ; i++) {
// Find beacons with same minor ...
var foundBeacon = ibeacons.find(function(closestBeacon) {
// ... and return the beacon the lowest accuracy seen
// return closestBeacon.accuracy.toFixed(2) < lowestAccuracySeen;
return closestBeacon.proximity == lowestAccuracySeen
});
// If found ...
if (foundBeacon) {
// ... define the lowest accuracy and the nearest beacon
lowestAccuracySeen = foundBeacon.accuracy;
nearestBeacon = foundBeacon;
// Identify what component to render against nearest beacon
setIce = nearestBeacon.minor == ice ? true : false;
setMint = nearestBeacon.minor == mint ? true : false;
setBlueberry = nearestBeacon.minor == blueberry ? true : false;
if (setIce) {
// THESE VARIABLES CANNOT BE REDEFINED
naptanId = "490004936E"
lines = "55"
} else if (setMint) {
} else if (setBlueberry) {
};
}
}
}
});
// API calls
// ***********************************************************************
class APIService {
// Fecth stop point info
static _fetchStopPoint(cb) {
console.log(naptanId, lines)
fetch(`https://api.tfl.gov.uk/StopPoint/${naptanId}`)
.then(stopData => {
try {
stopData = JSON.parse(stopData._bodyText); // Converts data to a readable format
cb(stopData, naptanId);
} catch(e) {
cb(e);
}
})
.catch(e => cb(e));
}
// Fetch arrival times info
static _fetchArrivalTimes(lines, cb) {
fetch(`https://api.tfl.gov.uk/Line/${lines}/Arrivals/${naptanId}`)
.then(arrivalData => {
try {
arrivalData = JSON.parse(arrivalData._bodyText);
arrivalTime = arrivalData
cb(arrivalData);
} catch(e) {
cb(e);
}
})
.catch(e => cb(e));
}
// Fetch status info
static _fetchStatus(lines) {
fetch(`https://api-argon.digital.tfl.gov.uk/Line/${lines}/Status`)
.then(statusData => {
try {
statusData = JSON.parse(statusData._bodyText); // Converts data to a readable format
cb(statusData);
} catch(e) {
cb(e);
}
})
.catch(e => cb(e));
}
}
module.exports = APIService;
The simplest approach to handle these global variables (cross different components) is to use AsyncStorage:
let response = await AsyncStorage.getItem('listOfTasks'); //get, in any components
AsyncStorage.setItem('listOfTasks', 'I like to save it.'); //set, in any components
For more performance critical global vars, you can also consider Realm Database (Like CoreData, SQLite in both iOS and Android).
Related
My problem is simple, but incredibly frustrating as I'm now on my second week of trying to figure this out and on the verge of giving up. I would like to retrieve my 'notesObject' variable outside my getAllNotes() function when after the transaction.oncomplete() listener executes.
(function() {
// check for IndexedDB support
if (!window.indexedDB) {
console.log(`Your browser doesn't support IndexedDB`);
return;
}
// open the CRM database with the version 1
let request = indexedDB.open('Notes', 1);
// create the Contacts object store and indexes
request.onupgradeneeded = (event) => {
let db = event.target.result;
// create the Notes object store ('table')
let store = db.createObjectStore('Notes', {
autoIncrement: true
});
// create an index on the sections property.
let index = store.createIndex('Sections', 'sections', {
unique: true
});
}
function insertData() {
let myDB = indexedDB.open('Notes');
myDB.onsuccess = (event) => {
// myDB.transaction('Notes', 'readwrite')
event.target.result.transaction('Notes', 'readwrite')
.objectStore('Notes')
.put({
sections: "New Note",
pages: "New page",
lastSelectedPage: ""
});
console.log("insert successful");
}
myDB.onerror = (event) => {
console.log('Error in NotesDB - insertData(): ' + event.target.errorCode);
}
myDB.oncomplete = (event) => {
myDB.close();
console.log('closed');
}
}
insertData()
function getAllNotes() {
let myDB = indexedDB.open('Notes');
let notesObject = [];
myDB.onsuccess = (event) => {
let dbObjectStore = event.target.result
.transaction("Notes", "readwrite").objectStore("Notes");
dbObjectStore.openCursor().onsuccess = (e) => {
let cursor = e.target.result;
if (cursor) {
let primaryKey = cursor.key;
let section = cursor.value.sections;
notesObject.push({
primaryKey,
section
})
cursor.continue();
}
}
dbObjectStore.transaction.onerror = (event) => {
console.log('Error in NotesDB - getAllData() tranaction: ' + event.target.errorCode);
}
dbObjectStore.transaction.oncomplete = (event) => {
return notesObject;
console.log(notesObject)
}
}
}
let notes = getAllNotes()
console.log("Getting Notes sucessful: " + notes)
})()
I've tried setting global variables, but nothing seems to work. I am a complete noob and honestly, I'm completely lost on how to retrieve the notesObject variable outside my getAllNotes() function. The results I get are 'undefined'. Any help would be greatly appreciated.
This is effectively a duplicate of Indexeddb: return value after openrequest.onsuccess
The operations getAllNotes() kicks off are asynchronous (they will run in the background and take time to complete), whereas your final console.log() call is run synchronously, immediately after getAllNotes(). The operations haven't completed at the time that is run, so there's nothing to log.
If you search SO for "indexeddb asynchronous" you'll find plenty of questions and answers about this topic.
I've been developing a scraper-type chrome extension for internal/personal use to scrape course data from a university's website.
The high-level algorithm is as follows:
Open up the main page where the user can input the class data they want to find. (The point is to use the data in this page to generate every possible url for every unique course page)
Generate the first endpoint and open a new tab with that url. (This is what I'm calling the "second degree scrape")
Begin the second degree scrape and when it's done, set the chrome.storage.local to true. Then close the tab.
The content script from the main page reads the local storage and sees that the state is true so it resolves the promise. It resets the local storage to false.
It generates the new url and recursively repeats the process until every possible url is created.
The extension works well when I set the storage true and never modify it and simply console.log every possible url. The error arrises when I let the program open up a new tab and let it update local.storage. Before using local.storage I tried a similar implementation using messaging (simple and long-lived) and background but I had the same issue then.
Any ideas of what I could try?
Here's my code:
background/index.ts
chrome.storage.local.set({ secondDegreeState: false });
content/index.ts
const un:string = "***";
const pw:string = "***"
const levels:Array<string> = ['L', 'U', 'G'];
let ccyys:string = `20212`;
let search_type_main:string = `FIELD`
let signInSequence:Function = () => {
if(document.getElementById("login-button")){
let signInButton:HTMLInputElement = document.getElementById("login-button")?.children[0] as HTMLInputElement;
let username: HTMLInputElement = document.getElementById("username") as HTMLInputElement;
let password: HTMLInputElement = document.getElementById("password") as HTMLInputElement;
username.value = un;
password.value = pw;
signInButton.value = "Begin Scraping";
setTimeout(() => {
signInButton.click();
console.log('Sign in button pressed');
}, 2000);
}
}
let scrapingSeqence:Function = () => {
if(window.location.href === "https://utdirect.utexas.edu/apps/registrar/course_schedule/20212/"){ // If we are in the main registration page
firstDegreeScrape(0, 1);
}
if(window.location.hostname == "utdirect.utexas.edu"){ // Make sure that we're on a proper hostname
secondDegreeScrape();
}
}
function secondDegreePromise(url:string) : Promise<any> {
/// Open up a new tab with the generated URL
window.open(url, '_blank');
return new Promise (function callback(resolve:Function, reject:Function) {
chrome.storage.local.get(['secondDegreeState'], (response) => {
if(chrome.runtime.lastError) {
console.error(chrome.runtime.lastError.message);
reject("Chrome error");
}else if (response.secondDegreeState === false){ // If the second degree state is still not done
console.log('Still waiting for 2nd degree scrape to finish...'+' Its state is '+response.secondDegreeState);
setTimeout(callback, 5000); // repeat promise after n-seconds until state is true.
}else if(response.secondDegreeState === true){ // If the promise is complete
resolve("2nd degree scrape was complete!");
}else {
reject("Oopsie...");
}
})
});
}
// Two base cases, 1: it reaches the end of the levels array, 2: it reaches the end of the FOS list.
let firstDegreeScrape:Function = (levelNum: number, fosNum: number) => {
// Reset the scrape state (Turns it false)
chrome.storage.local.set({ secondDegreeState: false });
if (levelNum < levels.length){ // If not base case #1
const fosParent:HTMLElement|null = document.getElementById("fos_fl"); // Define the FOS parent element.
if(fosParent){ // If the fosParent is present. (Will most likely return true... just for extra safety)
let fosChildren = fosParent.children;
if(fosNum < fosChildren.length){ // If not base case #2
let fos:HTMLOptionElement = fosChildren[fosNum] as HTMLOptionElement; // The individual field of study.
let fosValue:string = fos.value.split(' ').join('+'); // Format FOS
const url:string = `https://utdirect.utexas.edu/apps/registrar/course_schedule/20212/results/?ccyys=${ccyys}&search_type_main=${search_type_main}&fos_fl=${fosValue}&level=${levels[levelNum]}`;
secondDegreePromise(url)
.then((res)=>{ // If the second degree scrape promise is resolved
console.log(res+"Now moving along to next URL.");
firstDegreeScrape(levelNum, fosNum+1); // Generate the next URL and scrape it
})
.catch(res=>{console.log(res)});
}else {
firstDegreeScrape(levelNum+1, 1);
}
}
}
}
let secondDegreeScrape:Function = () => {
// make sure that there is something to scrape
let table: HTMLTableElement = document.getElementsByClassName('rwd-table')[0] as HTMLTableElement;
if(table){
let t_rows:HTMLCollection = table.children[1].children as HTMLCollection;
let t_rows_arr:Element[] = Array.from(t_rows);
for(let i=0; i < t_rows_arr.length; i++){
// console.log(t_rows_arr[i].childElementCount);
if(t_rows_arr[i].childElementCount == 1){ // If the row is a title
let course_title:any = t_rows_arr[i].childNodes[1].firstChild?.firstChild?.textContent;
let divisionRegex = /^[a-z\s]{0,3}/gi;
let courseNumRegex = /\d*\w/m;
console.log("Division: "+course_title.match(divisionRegex)[0]);
course_title = course_title.replace(divisionRegex, "");
console.log("Course Number: "+course_title.match(courseNumRegex)[0]);
course_title = course_title.replace(courseNumRegex, "");
console.log("Course Name: "+course_title);
}else { // If it's a sub-column
let row = t_rows_arr[i];
let rowChildren = row.childNodes;
let unique = rowChildren[1].childNodes[0].childNodes[0].textContent; //
console.log("Unique: "+unique);
let days = rowChildren[3].textContent;
console.log("Days: "+days);
let hour = rowChildren[5].textContent;
console.log("Hour: "+hour);
// let room;
let instruction_mode = rowChildren[9].textContent;
console.log("Instruction Mode: "+instruction_mode);
let instructor = rowChildren[11].textContent;
console.log("Instructor: "+instructor);
let status = rowChildren[13].textContent;
console.log("Status: "+status);
let flags = rowChildren[15].textContent;
console.log("Flags: "+flags);
let core = rowChildren[17].textContent;
console.log("Core: "+core);
console.log("\n");
}
}
if(document.getElementById("next_nav_link")){ // If there is a next page
setTimeout(()=>{
document.getElementById("next_nav_link")?.click(); // Click the next button
}, 5000)
}else {
setTimeout(()=>{
// Let's complete the 2nd degree scrape (Sets true) & update the local variable
chrome.storage.local.set({ secondDegreeState: true });
//close the tab
window.close();
}, 1000)
}
}
}
let main:Function = () => {
signInSequence();
scrapingSeqence();
}
main();
manifest.json permissions:
tabs
declarativeContent
storage
activeTab
Thanks for the help!
I am trying to fetch data from different collections in my cloud Firestore database in advance before I process them and apply them to batch, I created two async functions, one to capture the data and another to execute certain code only after all data is collected, I didn't want the code executing and creating errors before the data is fetched when i try to access the matchesObject after the async function to collect data is finished, it keeps saying "it cannot access a property matchStatus of undefined", i thought took care of that with async and await? could anyone shed some light as to why it is undefined one moment
axios.request(options).then(function(response) {
console.log('Total matches count :' + response.data.matches.length);
const data = response.data;
var matchesSnapshot;
var marketsSnapshot;
var tradesSnapshot;
var betsSnapshot;
matchesObject = {};
marketsObject = {};
tradesObject = {};
betsObject = {};
start();
async function checkDatabase() {
matchesSnapshot = await db.collection('matches').get();
matchesSnapshot.forEach(doc => {
matchesObject[doc.id] = doc.data();
console.log('matches object: ' + doc.id.toString())
});
marketsSnapshot = await db.collection('markets').get();
marketsSnapshot.forEach(doc2 => {
marketsObject[doc2.id] = doc2.data();
console.log('markets object: ' + doc2.id.toString())
});
tradesSnapshot = await db.collection('trades').get();
tradesSnapshot.forEach(doc3 => {
tradesObject[doc3.id] = doc3.data();
console.log('trades object: ' + doc3.id.toString())
});
betsSnapshot = await db.collection('bets').get();
betsSnapshot.forEach(doc4 => {
betsObject[doc4.id] = doc4.data();
console.log('bets object: ' + doc4.id.toString())
});
}
async function start() {
await checkDatabase();
// this is the part which is undefined, it keeps saying it cant access property matchStatus of undefined
console.log('here is matches object ' + matchesObject['302283']['matchStatus']);
if (Object.keys(matchesObject).length != 0) {
for (let bets of Object.keys(betsObject)) {
if (matchesObject[betsObject[bets]['tradeMatchId']]['matchStatus'] == 'IN_PLAY' && betsObject[bets]['matched'] == false) {
var sfRef = db.collection('users').doc(betsObject[bets]['user']);
batch11.set(sfRef, {
accountBalance: admin.firestore.FieldValue + parseFloat(betsObject[bets]['stake']),
}, {
merge: true
});
var sfRef = db.collection('bets').doc(bets);
batch12.set(sfRef, {
tradeCancelled: true,
}, {
merge: true
});
}
}
}
});
There are too many smaller issues in the current code to try to debug them one-by-one, so this refactor introduces various tests against your data. It currently won't make any changes to your database and is meant to be a replacement for your start() function.
One of the main differences against your current code is that it doesn't unnecessarily download 4 collections worth of documents (two of them aren't even used in the code you've included).
Steps
First, it will get all the bet documents that have matched == false. From these documents, it will check if they have any syntax errors and report them to the console. For each valid bet document, the ID of it's linked match document will be grabbed so we can then fetch all the match documents we actually need. Then we queue up the changes to the user's balance and the bet's document. Finally we report about any changes to be done and commit them (once you uncomment the line).
Code
Note: fetchDocumentById() is defined in this gist. Its a helper function to allow someCollectionRef.where(FieldPath.documentId(), 'in', arrayOfIds) to take more than 10 IDs at once.
async function applyBalanceChanges() {
const betsCollectionRef = db.collection('bets');
const matchesCollectionRef = db.collection('matches');
const usersCollectionRef = db.collection('users');
const betDataMap = {}; // Record<string, BetData>
await betsCollectionRef
.where('matched', '==', false)
.get()
.then((betsSnapshot) => {
betsSnapshot.forEach(betDoc => {
betDataMap[betDoc.id] = betDoc.data();
});
});
const matchDataMap = {}; // Record<string, MatchData | undefined>
// betIdList contains all IDs that will be processed
const betIdList = Object.keys(betDataMap).filter(betId => {
const betData = betDataMap[betId];
if (!betData) {
console.log(`WARN: Skipped Bet #${betId} because it was falsy (actual value: ${betData})`);
return false;
}
const matchId = betData.tradeMatchId;
if (!matchId) {
console.log(`WARN: Skipped Bet #${betId} because it had a falsy match ID (actual value: ${matchId})`);
return false;
}
if (!betData.user) {
console.log(`WARN: Skipped Bet #${betId} because it had a falsy user ID (actual value: ${userId})`);
return false;
}
const stakeAsNumber = Number(betData.stake); // not using parseFloat as it's too lax
if (isNaN(stakeAsNumber)) {
console.log(`WARN: Skipped Bet #${betId} because it had an invalid stake value (original NaN value: ${betData.stake})`);
return false;
}
matchDataMap[matchId] = undefined; // using undefined because its the result of `doc.data()` when the document doesn't exist
return true;
});
await fetchDocumentsById(
matchesCollectionRef,
Object.keys(matchIdMap),
(matchDoc) => matchDataMap[matchDoc.id] = matchDoc.data()
);
const batch = db.batch();
const queuedUpdates = 0;
betIdList.forEach(betId => {
const betData = betDataMap[betId];
const matchData = matchDataMap[betData.tradeMatchId];
if (matchData === undefined) {
console.log(`WARN: Skipped /bets/${betId}, because it's linked match doesn't exist!`);
continue;
}
if (matchData.matchStatus !== 'IN_PLAY') {
console.log(`INFO: Skipped /bets/${betId}, because it's linked match status is not "IN_PLAY" (actual value: ${matchData.matchStatus})`);
continue;
}
const betRef = betsCollectionRef.doc(betId);
const betUserRef = usersCollectionRef.doc(betData.user);
batch.update(betUserRef, { accountBalance: admin.firestore.FieldValue.increment(Number(betData.stake)) });
batch.update(betRef, { tradeCancelled: true });
queuedUpdates += 2; // for logging
});
console.log(`INFO: Batch currently has ${queuedUpdates} queued`);
// only uncomment when you are ready to make changes
// batch.commit();
}
Usage:
axios.request(options)
.then(function(response) {
const data = response.data;
console.log('INFO: Total matches count from API:' + data.matches.length);
return applyBalanceChanges();
}
I'm currently working on a Alexa Skill for my Smart Home.
I created a Lambda function and want to make a http request to a server. but it wont execute any of my anon. functions.
A lambda code example:
/* This code has been generated from your interaction model by skillinator.io
/* eslint-disable func-names */
/* eslint quote-props: ["error", "consistent"]*/
// There are three sections, Text Strings, Skill Code, and Helper Function(s).
// You can copy and paste the contents as the code for a new Lambda function, using the alexa-skill-kit-sdk-factskill template.
// This code includes helper functions for compatibility with versions of the SDK prior to 1.0.9, which includes the dialog directives.
// 1. Text strings =====================================================================================================
// Modify these strings and messages to change the behavior of your Lambda function
const request = require("request");
let speechOutput;
let reprompt;
let welcomeOutput = "Hallo xyz!";
let welcomeReprompt = "xy";
// 2. Skill Code =======================================================================================================
"use strict";
const Alexa = require('alexa-sdk');
const APP_ID = "my id"; // TODO replace with your app ID (OPTIONAL).
speechOutput = '';
const handlers = {
'LaunchRequest': function () {
this.emit(':ask', welcomeOutput, welcomeReprompt);
},
'AMAZON.HelpIntent': function () {
speechOutput = 'Placeholder response for AMAZON.HelpIntent.';
reprompt = '';
this.emit(':ask', speechOutput, reprompt);
},
'AMAZON.CancelIntent': function () {
speechOutput = 'Placeholder response for AMAZON.CancelIntent';
this.emit(':tell', speechOutput);
},
'AMAZON.StopIntent': function () {
speechOutput = 'Placeholder response for AMAZON.StopIntent.';
this.emit(':tell', speechOutput);
},
'SessionEndedRequest': function () {
speechOutput = '';
//this.emit(':saveState', true);//uncomment to save attributes to db on session end
this.emit(':tell', speechOutput);
},
'LichtIntent': function () {
//delegate to Alexa to collect all the required slot values
let filledSlots = delegateSlotCollection.call(this);
speechOutput = '';
//any intent slot variables are listed here for convenience
let zimmerSlotRaw = this.event.request.intent.slots.zimmer.value;
console.log(zimmerSlotRaw);
let zimmerSlot = resolveCanonical(this.event.request.intent.slots.zimmer);
console.log(zimmerSlot);
let was_lichtSlotRaw = this.event.request.intent.slots.was_licht.value;
console.log(was_lichtSlotRaw);
let was_lichtSlot = resolveCanonical(this.event.request.intent.slots.was_licht);
console.log(was_lichtSlot);
//THIS IS THE PART WHERE I NEED HELP!!
MakeRequest(function(data){
console.log("asddd");
speechOutput = "This is a place holder response for the intent named LichtIntent, which includes dialogs. This intent has 2 slots, which are zimmer, and was_licht. Anything else?";
var speechOutput = data;
this.emit(':ask', speechOutput, speechOutput);
});
console.log("asdww");
//DOWN TO HERE!!
},
'StromIntent': function () {
//delegate to Alexa to collect all the required slot values
let filledSlots = delegateSlotCollection.call(this);
speechOutput = '';
//any intent slot variables are listed here for convenience
let geraet_stromSlotRaw = this.event.request.intent.slots.geraet_strom.value;
console.log(geraet_stromSlotRaw);
let geraet_stromSlot = resolveCanonical(this.event.request.intent.slots.geraet_strom);
console.log(geraet_stromSlot);
let wasSlotRaw = this.event.request.intent.slots.was.value;
console.log(wasSlotRaw);
let wasSlot = resolveCanonical(this.event.request.intent.slots.was);
console.log(wasSlot);
//Your custom intent handling goes here
speechOutput = "This is a place holder response for the intent named StromIntent, which includes dialogs. This intent has 2 slots, which are geraet_strom, and was. Anything else?";
this.emit(':ask', speechOutput, speechOutput);
},
'FrageIntent': function () {
//delegate to Alexa to collect all the required slot values
let filledSlots = delegateSlotCollection.call(this);
speechOutput = '';
//any intent slot variables are listed here for convenience
let geraetSlotRaw = this.event.request.intent.slots.geraet.value;
console.log(geraetSlotRaw);
let geraetSlot = resolveCanonical(this.event.request.intent.slots.geraet);
console.log(geraetSlot);
let was_frageSlotRaw = this.event.request.intent.slots.was_frage.value;
console.log(was_frageSlotRaw);
let was_frageSlot = resolveCanonical(this.event.request.intent.slots.was_frage);
console.log(was_frageSlot);
//Your custom intent handling goes here
speechOutput = "This is a place holder response for the intent named FrageIntent, which includes dialogs. This intent has 2 slots, which are geraet, and was_frage. Anything else?";
this.emit(':ask', speechOutput, speechOutput);
},
'TuerIntent': function () {
//delegate to Alexa to collect all the required slot values
let filledSlots = delegateSlotCollection.call(this);
speechOutput = '';
//any intent slot variables are listed here for convenience
let zeitSlotRaw = this.event.request.intent.slots.zeit.value;
console.log(zeitSlotRaw);
let zeitSlot = resolveCanonical(this.event.request.intent.slots.zeit);
console.log(zeitSlot);
//Your custom intent handling goes here
speechOutput = "This is a place holder response for the intent named TuerIntent, which includes dialogs. This intent has one slot, which is zeit. Anything else?";
this.emit(':ask', speechOutput, speechOutput);
},
'Unhandled': function () {
speechOutput = "The skill didn't quite understand what you wanted. Do you want to try something else?";
this.emit(':ask', speechOutput, speechOutput);
}
};
exports.handler = (event, context) => {
const alexa = Alexa.handler(event, context);
alexa.appId = APP_ID;
// To enable string internationalization (i18n) features, set a resources object.
//alexa.resources = languageStrings;
alexa.registerHandlers(handlers);
//alexa.dynamoDBTableName = 'DYNAMODB_TABLE_NAME'; //uncomment this line to save attributes to DB
alexa.execute();
};
// END of Intent Handlers {} ========================================================================================
// 3. Helper Function =================================================================================================
//THESE ARE MY HELPER FUNCTIONS
function url(){
console.log("asd");
return " my server ip";
}
function MakeRequest(callback){
console.log("hallo!");
request.get(url(), function(error, response, body){
console.log("****************************************");
console.log(response);
console.log("****************************************");
console.log(error);
console.log("****************************************");
console.log(body);
console.log("****************************************");
callback("erfolg!");
});
console.log("hffggh");
}
//DOWN TO HERE!!
function resolveCanonical(slot){
//this function looks at the entity resolution part of request and returns the slot value if a synonyms is provided
let canonical;
try{
canonical = slot.resolutions.resolutionsPerAuthority[0].values[0].value.name;
}catch(err){
console.log(err.message);
canonical = slot.value;
};
return canonical;
};
function delegateSlotCollection(){
console.log("in delegateSlotCollection");
console.log("current dialogState: "+this.event.request.dialogState);
if (this.event.request.dialogState === "STARTED") {
console.log("in Beginning");
let updatedIntent= null;
// updatedIntent=this.event.request.intent;
//optionally pre-fill slots: update the intent object with slot values for which
//you have defaults, then return Dialog.Delegate with this updated intent
// in the updatedIntent property
//this.emit(":delegate", updatedIntent); //uncomment this is using ASK SDK 1.0.9 or newer
//this code is necessary if using ASK SDK versions prior to 1.0.9
if(this.isOverridden()) {
return;
}
this.handler.response = buildSpeechletResponse({
sessionAttributes: this.attributes,
directives: getDialogDirectives('Dialog.Delegate', updatedIntent, null),
shouldEndSession: false
});
this.emit(':responseReady', updatedIntent);
} else if (this.event.request.dialogState !== "COMPLETED") {
console.log("in not completed");
// return a Dialog.Delegate directive with no updatedIntent property.
//this.emit(":delegate"); //uncomment this is using ASK SDK 1.0.9 or newer
//this code necessary is using ASK SDK versions prior to 1.0.9
if(this.isOverridden()) {
return;
}
this.handler.response = buildSpeechletResponse({
sessionAttributes: this.attributes,
directives: getDialogDirectives('Dialog.Delegate', null, null),
shouldEndSession: false
});
this.emit(':responseReady');
} else {
console.log("in completed");
console.log("returning: "+ JSON.stringify(this.event.request.intent));
// Dialog is now complete and all required slots should be filled,
// so call your normal intent handler.
return this.event.request.intent;
}
}
function randomPhrase(array) {
// the argument is an array [] of words or phrases
let i = 0;
i = Math.floor(Math.random() * array.length);
return(array[i]);
}
function isSlotValid(request, slotName){
let slot = request.intent.slots[slotName];
//console.log("request = "+JSON.stringify(request)); //uncomment if you want to see the request
let slotValue;
//if we have a slot, get the text and store it into speechOutput
if (slot && slot.value) {
//we have a value in the slot
slotValue = slot.value.toLowerCase();
return slotValue;
} else {
//we didn't get a value in the slot.
return false;
}
}
//These functions are here to allow dialog directives to work with SDK versions prior to 1.0.9
//will be removed once Lambda templates are updated with the latest SDK
function createSpeechObject(optionsParam) {
if (optionsParam && optionsParam.type === 'SSML') {
return {
type: optionsParam.type,
ssml: optionsParam['speech']
};
} else {
return {
type: optionsParam.type || 'PlainText',
text: optionsParam['speech'] || optionsParam
};
}
}
function buildSpeechletResponse(options) {
let alexaResponse = {
shouldEndSession: options.shouldEndSession
};
if (options.output) {
alexaResponse.outputSpeech = createSpeechObject(options.output);
}
if (options.reprompt) {
alexaResponse.reprompt = {
outputSpeech: createSpeechObject(options.reprompt)
};
}
if (options.directives) {
alexaResponse.directives = options.directives;
}
if (options.cardTitle && options.cardContent) {
alexaResponse.card = {
type: 'Simple',
title: options.cardTitle,
content: options.cardContent
};
if(options.cardImage && (options.cardImage.smallImageUrl || options.cardImage.largeImageUrl)) {
alexaResponse.card.type = 'Standard';
alexaResponse.card['image'] = {};
delete alexaResponse.card.content;
alexaResponse.card.text = options.cardContent;
if(options.cardImage.smallImageUrl) {
alexaResponse.card.image['smallImageUrl'] = options.cardImage.smallImageUrl;
}
if(options.cardImage.largeImageUrl) {
alexaResponse.card.image['largeImageUrl'] = options.cardImage.largeImageUrl;
}
}
} else if (options.cardType === 'LinkAccount') {
alexaResponse.card = {
type: 'LinkAccount'
};
} else if (options.cardType === 'AskForPermissionsConsent') {
alexaResponse.card = {
type: 'AskForPermissionsConsent',
permissions: options.permissions
};
}
let returnResult = {
version: '1.0',
response: alexaResponse
};
if (options.sessionAttributes) {
returnResult.sessionAttributes = options.sessionAttributes;
}
return returnResult;
}
function getDialogDirectives(dialogType, updatedIntent, slotName) {
let directive = {
type: dialogType
};
if (dialogType === 'Dialog.ElicitSlot') {
directive.slotToElicit = slotName;
} else if (dialogType === 'Dialog.ConfirmSlot') {
directive.slotToConfirm = slotName;
}
if (updatedIntent) {
directive.updatedIntent = updatedIntent;
}
return [directive];
}
I use the "request" module for my http-request, I think you all know this module.
When I test my function, it gives me NO runtime error!
but the anonymous functions from the MakeRequest call and the request.get call wont execute, and I don't know why.
For Example the console output:
Hallo!,
Asd (very funny.. it gets the params for the request.get.. the bug has to be between the second param(the anon function itself?) in the call and the start of the anon function),
hffggh,
asdww
-the console.logs in the anon. functions doesn't show.
I maybe undestand why the MakeRequest funct. doesn't run -> because the callback from it never came. But why does the request.get not work?? I pasted the necessary parts (the MakeRequest and the helper functions) in a normal node projekt, and it worked!!? -facepalm.... im nearly crying..
My Goal: I want to receive a response from the server.. - thats all. But it just wont go into the function where I can access the response object(s).
(Scroll down to the helper functions)
Please help me out guys, I could really hit my head against the wall.
Reguards
In an imaginary Session module as bellow, could the _sessData variable be leaked in between request. For instance maybe a user just logged in, and at a "same time" a isAuthed() called is made for a different user. Could this be a problem? This module would be called on every request so I guess it's safe but a confirmation would be great.
module.exports = function(app) {
var _sessData = null;
function Session() {
//
}
Session.prototype.set = function( payload ) {
Cookies.set('session', payload);
_sessData = payload;
}
Session.prototype.isAuthed = function() {
return _sessData && Object.keys(_sessData).length > 0;
}
Session.prototype.clear = function() {
Cookies.set('session', '');
_sessData = {};
}
Object.defineProperty(app.context, 'Session', {
// Not exaclty sure what is happening here with this and _ctx..
// Note: apprently ctx is bound to the middleware when call()ing
get: function() { return new Session(this); }
});
return function * (next) {
var token = Cookies.get('jwt');
if ( ! token ) {
_sessData = {};
return yield* next;
}
try {
_sessData = jwt.verify(token, SECRET);
} catch(e) {
if (e.name === 'TokenExpiredError') {
this.Session.clear();
}
}
yield* next;
}
}
EDIT:
The module get used in a KoaJS app like so (the above module does not produce a proper KoaJS middleware but this is beside the point):
var app = require('koa')();
// JWT session middleware
var session = require("./session")();
app.use(session);
app.listen(3080);
What you are exporting is a function, so _sessData does not actually exist when you import the module. It gets created when you call the function. Each time the function is called -- and it needs to be called once per request -- a new variable in that scope with the name _sessData is created. No, they cannot interfere with each other.