handler.js

const axios = require("axios");
const {
  getPetsFromIframeHTML,
  getIframeFromPetUrl,
  getPetsFromDynamo,
  savePetsToDynamo,
  deletePetsFromDynamo,
  petsDiff,
  sendTwilioTextMessage,
} = require("./helpers");

module.exports.getPets = async () => {
  const {
    Items: [currDogs = { dogs: [] }],
  } = await getPetsFromDynamo();

  return {
    statusCode: 200,
    headers: {
      "Access-Control-Allow-Origin": "*",
      "Access-Control-Allow-Credentials": true,
    },
    body: JSON.stringify(
      {
        message: "jrpupsnstuff site parsed",
        dogList: currDogs,
      },
      null,
      2
    ),
  };
};

module.exports.writePets = async () => {
  const { data: petHTML } = await axios(
    "http://www.jrspupsnstuff.org/?page=allpups"
  );

  const iFrameUrl = getIframeFromPetUrl(petHTML);
  const { data: iFrameHTML } = await axios(iFrameUrl);
  const nextDogs = getPetsFromIframeHTML(iFrameHTML);
  const {
    Items: [prevDogs = { dogs: [] }],
  } = await getPetsFromDynamo();
  await deletePetsFromDynamo(prevDogs.dogId);
  const newDogIds = petsDiff(nextDogs, prevDogs.dogs).map((dog) => dog.id);
  const allDogs = nextDogs.map((dog) => ({
    ...dog,
    new: newDogIds.includes(dog.id),
  }));
  await savePetsToDynamo(allDogs);

  if (newDogIds.length > 0) await sendTwilioTextMessage(newDogIds.length);

  return {
    statusCode: 200,
    headers: {
      "Access-Control-Allow-Origin": "*",
      "Access-Control-Allow-Credentials": true,
    },
    body: JSON.stringify(
      {
        message: "jrpupsnstuff site parsed",
        prevDogs: prevDogs.dogs,
        newDogIds,
        nextDogs,
        allDogs,
      },
      null,
      2
    ),
  };
};