Things used in this project

Hardware components:
Echo
Amazon Alexa Amazon Echo
×1
Software apps and online services:
Dp image kit 02
Amazon Alexa Alexa Skills Kit

Schematics

Code

Alexa Intent SchemaJSON
{
  "intents": [
    {
      "intent": "SynonymIntent",
      "slots": [
        {
          "name": "queryword",
          "type": "AMAZON.LITERAL"
        }
      ]
    },
    {
      "intent": "AMAZON.HelpIntent"
    },
    {
      "intent": "AMAZON.StopIntent"
    },
    {
      "intent": "AMAZON.CancelIntent"
    }
  ]
}
Sample UterancesTex
SynonymIntent what is another word for {flat|queryword}
SynonymIntent how else would I say {tired|queryword}
SynonymIntent what's a smart way to say {happy|queryword}
SynonymIntent what's another word for {car|queryword}
SynonymIntent how would an english major say {boat|queryword}
SynonymIntent {run|queryword}
SynonymIntent a word for {cow|queryword}
SynonymIntent how else would I say {cat|queryword}
SynonymIntent how would an english major say {dog|queryword}
SynonymIntent what is a synonym for {sad|queryword}
SynonymIntent what's a synonym for {patient|queryword}
SynonymIntent a synonym for {exhaustive|queryword}
SynonymIntent for a synonym for {ended|queryword}
SynonymIntent for a good synonym for {plan|queryword}
SynonymIntent to tell me a synonym for {hope|queryword}
SynonymIntent to give me a synonym for {slow|queryword}
SynonymIntent about a synonym for {smart|queryword}
SynonymIntent for another word for {brilliant|queryword}

AMAZON.HelpIntent help
AMAZON.HelpIntent help me
AMAZON.StopIntent stop
AMAZON.CancelIntent cancel
Lambda ServiceJavaScript
// Route the incoming request based on type (LaunchRequest, IntentRequest,
// etc.) The JSON body of the request is provided in the event parameter.

var http = require('http');

exports.handler = function (event, context) {
    try {
        console.log("event.session.application.applicationId=" + event.session.application.applicationId);

        /**
         * Uncomment this if statement and populate with your skill's application ID to
         * prevent someone else from configuring a skill that sends requests to this function.
         */
        /*
        if (event.session.application.applicationId !== "amzn1.echo-sdk-ams.app.[unique-value-here]") {
             context.fail("Invalid Application ID");
        }
        */

        if (event.session.new) {
            onSessionStarted({requestId: event.request.requestId}, event.session);
        }

        if (event.request.type === "LaunchRequest") {
            onLaunch(event.request,
                event.session,
                function callback(sessionAttributes, speechletResponse) {
                    context.succeed(buildResponse(sessionAttributes, speechletResponse));
                });
        } else if (event.request.type === "IntentRequest") {
            onIntent(event.request,
                event.session,
                function callback(sessionAttributes, speechletResponse) {
                    context.succeed(buildResponse(sessionAttributes, speechletResponse));
                });
        } else if (event.request.type === "SessionEndedRequest") {
            onSessionEnded(event.request, event.session);
            context.succeed();
        }
    } catch (e) {
        context.fail("Exception: " + e);
    }
};

/**
 * Called when the session starts.
 */
function onSessionStarted(sessionStartedRequest, session) {
    console.log("onSessionStarted requestId=" + sessionStartedRequest.requestId +
        ", sessionId=" + session.sessionId);
}

/**
 * Called when the user launches the skill without specifying what they want.
 */
function onLaunch(launchRequest, session, callback) {
    console.log("onLaunch requestId=" + launchRequest.requestId +
        ", sessionId=" + session.sessionId);

    // Dispatch to your skill's launch.
    getWelcomeResponse(callback);
}

/**
 * Called when the user specifies an intent for this skill.
 */
function onIntent(intentRequest, session, callback) {
    console.log("onIntent requestId=" + intentRequest.requestId +
        ", sessionId=" + session.sessionId);

    var intent = intentRequest.intent,
        intentName = intentRequest.intent.name;

    // Dispatch to your skill's intent handlers
    if ("SynonymIntent" === intentName) {
        getSyn(intent, session, callback);
    } else if ("AMAZON.HelpIntent" === intentName) {
        getHelpResponse(callback);
    } else if ("AMAZON.StopIntent" === intentName || "AMAZON.CancelIntent" === intentName) {
        handleSessionEndRequest(callback);
    } else {
        throw "Invalid intent";
    }
}

/**
 * Called when the user ends the session.
 * Is not called when the skill returns shouldEndSession=true.
 */
function onSessionEnded(sessionEndedRequest, session) {
    console.log("onSessionEnded requestId=" + sessionEndedRequest.requestId +
        ", sessionId=" + session.sessionId);
    // Add Cleanup logic here
}

// --------------- Functions that control the skill's behavior -----------------------

function getWelcomeResponse(callback) {
    // If we wanted to initialize the session to have some attributes we could add those here.
    var sessionAttributes = {};
    var cardTitle = "Welcome";
    var speechOutput = "Welcome to Thesaurus Rex. " +
        "I can find synonyms for words. Please use only single words, for example car, but not race car.";
    // If the user either does not reply to the welcome message or says something that is not
    // understood, they will be prompted again with this text.
    var repromptText = "You can get help by saying, help.";
    var shouldEndSession = false;

    callback(sessionAttributes,
        buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}

function getHelpResponse(callback) {
    // If we wanted to initialize the session to have some attributes we could add those here.
    var sessionAttributes = {};
    var cardTitle = "Help";
    var speechOutput = "To use Thesaurus Rex you say a word you would like a synonym for. Only single words, for example car, but not race car.";
    // If the user either does not reply to the welcome message or says something that is not
    // understood, they will be prompted again with this text.
    var repromptText = "Go ahead, say a word.";
    //    "synonym for little";
    
    var shouldEndSession = false;

    callback(sessionAttributes,
        buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
}

function handleSessionEndRequest(callback) {
    var cardTitle = "Session Ended";
    var speechOutput = "Thank you for using Thesaurus Rex to make yourself look smart. Have a nice day!";
    // Setting this to true ends the session and exits the skill.
    var shouldEndSession = true;

    callback({}, buildSpeechletResponse(cardTitle, speechOutput, null, shouldEndSession));
}




function makeTheoRequest(word, theoResponseCallback) {
    
   if (word===undefined) {
     theoResponseCallback(new Error('undefined'));
   }
   
  console.log(`Got word: ${word}`);

  var query_url ='http://words.bighugelabs.com/api/2/c/' + word + '/json';
  var body = '';
  var jsonObject;

  http.get(query_url, (res) => {
    console.log(`Got response: ${res.statusCode}`);
    if (res.statusCode==200) {
        res.setEncoding('utf8');
        res.on('data', function (chunk) {
          body += chunk;
        });
        res.on('end', () => {
          console.log("RequestBody: " + body);
          jsonObject = JSON.parse(body);
          
           theoResponseCallback(null, body);
       
        });
    }
    else if (res.statusCode==303) {
        console.log("RequestBody: " + res.statusMessage);
        query_url ='http://words.bighugelabs.com/api/2/yourkey/' +res.statusMessage + '/json';
        console.log("url: " + query_url);
        http.get(query_url, (res2) => {
            console.log(`Got response: ${res2.statusCode}`);
            res2.setEncoding('utf8');
            res2.on('data', function (chunk) {
              body += chunk;
            });
            res2.on('end', () => {
              console.log("RequestBody: " + body);
              jsonObject = JSON.parse(body);
              
               theoResponseCallback(null, body);
            
            });
        });
    }
    else {
      console.log(`Got error: ${res.statusCode}`);
      theoResponseCallback(new Error(res.statusCode));
    }
  }).on('error', (e) => {
    console.log(`Got error: ${e.message}`);
     theoResponseCallback(new Error(e.message));
  });
}




function getSyn(intent, session, callback) {
    var repromptText = null;
    var sessionAttributes = {};
    var shouldEndSession = true;
    var speechOutput = "";
    var maxLength = 0;


   


    makeTheoRequest( intent.slots.queryword.value, function theoResponseCallback(err, theoResponseBody) {
        var speechOutput;

        if (err) {
            if (err=='undefiend'){
                 speechOutput = "Sorry, the Thesaurus service can only handle single word, for example car. Multiple words such as race car, marching band, tuna fish and golden retriever will not work.";
            }
            else {
                speechOutput = "Sorry, the Thesaurus service is experiencing a problem with your request. Try again or try a different singular word.";
            }
            
        } else {
            
            var theoResponse = JSON.parse(theoResponseBody);
            
            speechOutput = "Here's what I found: ";
            
            if (theoResponse.hasOwnProperty('noun')) {
                speechOutput += intent.slots.queryword.value + ', used as a noun, ';
                maxLength = Object.keys(theoResponse.noun.syn).length;
                if (Object.keys(theoResponse.noun.syn).length>5)
                {
                    maxLength = 5;
                }
                
                for(var i=0;i<maxLength;i++) {
                if (i>0){
                    speechOutput += ", or ";
                }
                speechOutput +=  theoResponse.noun.syn[i];
                
                }
                speechOutput += '. '
            }
            
            if (theoResponse.hasOwnProperty('verb')){
                speechOutput += intent.slots.queryword.value + ', used as a verb, ';
                maxLength = Object.keys(theoResponse.verb.syn).length;
                if (Object.keys(theoResponse.verb.syn).length>5)
                {
                    maxLength = 5;
                }
                
                for(var i=0;i<maxLength;i++) {
                if (i>0){
                    speechOutput += ", or ";
                }
                speechOutput +=  theoResponse.verb.syn[i];
                
                }
                speechOutput += '. '
            }
            
            if (theoResponse.hasOwnProperty('adverb')){
                speechOutput += intent.slots.queryword.value + ', used as an adverb, ';
                maxLength = Object.keys(theoResponse.adverb.syn).length;
                if (Object.keys(theoResponse.adverb.syn).length>5)
                {
                    maxLength = 5;
                }
                
                for(var i=0;i<maxLength;i++) {
                if (i>0){
                    speechOutput += ", or ";
                }
                speechOutput +=  theoResponse.adverb.syn[i];
                
                }
                speechOutput += '. '
            }
            
            if (theoResponse.hasOwnProperty('adjective')){
                speechOutput += intent.slots.queryword.value + ', used as an adjective, ';
                maxLength = Object.keys(theoResponse.adjective.syn).length;
                if (Object.keys(theoResponse.adjective.syn).length>5)
                {
                    maxLength = 5;
                }
                
                for(var i=0;i<maxLength;i++) {
                if (i>0){
                    speechOutput += ", or ";
                }
                speechOutput +=  theoResponse.adjective.syn[i];
                
                }
                speechOutput += '. '
            }
            
        }

        callback(sessionAttributes,
             buildSpeechletResponse(intent.name, speechOutput, repromptText, shouldEndSession));
    });
    
}


// --------------- Helpers that build all of the responses -----------------------

function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
    return {
        outputSpeech: {
            type: "PlainText",
            text: output
        },
        /*
        card: {
            type: "Simple",
            title: "SessionSpeechlet - " + title,
            content: "SessionSpeechlet - " + output
        },
        */
        reprompt: {
            outputSpeech: {
                type: "PlainText",
                text: repromptText
            }
        },
        shouldEndSession: shouldEndSession
    };
}

function buildResponse(sessionAttributes, speechletResponse) {
    return {
        version: "1.0",
        sessionAttributes: sessionAttributes,
        response: speechletResponse
    };
}

Credits

Image
Paul Langdon
47 projects • 176 followers
Working as a cloud architect for an IoT hardware company
Contact

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