Content for the Currency Converter Bot in the tutorial video here: https://www.youtube.com/watch?v=9cDtY_IH_Do&feature=youtu.be

Currency Converter Bot Tutorial

USER INPUT NODE

Welcome message: Hi! I can help you convert from one currency type to another.

TOPIC SELECTOR NODE

Greeting:

Hello
Hi
Greetings
What do you do?
What is your function?
Tell me about yourself

Convert Currency:

Convert 100 USD to INR
How many AUD is 1800 JPY?
What is 1100 GBP in CAD?
3 CZK in HKD
546 NOK to NZD
Convert from 76 USD to INR
Convert to SEK
Convert from INR
Convert 100 AUD
Convert SEK
How much is 12355 NZD in JPY?
Change 74 INR to USD
How many CZK can I get from 842 HKD?

ENTITY EXTRACTOR NODE (following convert_currency_topic)

Currencyvalue
Currencyfrom
Currencyto

ENTITY CHECKER NODE

none missing
Currencyvalue missing
Currencyfrom missing
Currencyto missing

RESPONSE NODES (if an entity is missing or was ambiguous)

I'm not sure - how many (numerical) units would you like to convert?
I'm not sure - what currency would you like to convert from?
I'm not sure - what currency would you like to convert to?

CODE SNIPPET NODE (to convert lowercase symbols to uppercase)

def lambda_handler(event, context):

    return_json = {}
    currencyfrom_uppercase = str(event["currencyfrom"])
    currencyto_uppercase = str(event["currencyto"])
    return_json["currencyfrom_uppercase"] = currencyfrom_uppercase.upper()
    return_json["currencyto_uppercase"] = currencyto_uppercase.upper()
    return return_json


GENERAL API NODE (to get the conversion rate for 1 unit of from_currency)

API url: http://api.fixer.io/latest
symbols: [currencyfrom_uppercase]
base: [currencyto_uppercase]


CODE SNIPPET NODE (to multiply conversion rate with from_value)

def lambda_handler(event, context):

    # A dictionary that will contain everything we need
    return_json = {}

    # Get today's date from API
    return_json["date_from_api"] = event["date"]
    return_json["from_currency_api"] = event["base"]
    return_json["from_currency_value"] = float(event["currencyvalue"])
    currencyvalue = float(event["currencyvalue"])
    rates = event["rates"]
    for key, value in rates.iteritems():
        return_json["to_currency_from_api"] = str(key)
        return_json["to_currency_value_from_api"] = str(float(value) * currencyvalue)
    return return_json

RESPONSE NODE (upon calling the API and executing code)

On [date_from_api] , [from_currency_value] [from_currency_api] is [to_currency_value_from_api] [to_currency_from_api]