initial commit

fetchers/fetcher.js

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+/* eslint-disable no-useless-catch */
+////////////////////////////////////////////////////////
+//                      IMPORTS
+////////////////////////////////////////////////////////
+import * as cheerio from 'cheerio';
+import axiosInstance from '../utils/axiosInstance.js';
+import AppError from '../utils/AppError.js';
+
+////////////////////////////////////////////////////////
+//                     FUNCTION
+////////////////////////////////////////////////////////
+/**
+ *
+ * @param {string} resourceStr a string after the baseURL
+ * @returns JSON containing the result
+ * @description makes a call to quora.com(with the resourceStr appended) and returns parsed JSON containing the data about the resource requested.
+ * @example await fetcher('What-is-free-and-open-software'); // will return object containing answers
+ * await fetcher('topic/Space-Physics'); // will return 'space physics' topic object
+ * await fetcher('profile/Charlie-Cheever'); // will return object containing information about charlie cheever
+ */
+const fetcher = async resourceStr => {
+  try {
+    // as url might contain unescaped chars. so, encodeing it right away
+    const res = await axiosInstance.get(encodeURIComponent(resourceStr));
+
+    const $ = cheerio.load(res.data);
+    let rawData;
+    $('body')
+      .children('script')
+      .each((i, el) => {
+        if ($(el).html() === 'window.installSettings();')
+          rawData = $(el)
+            .next()
+            .html()
+            ?.match(/"\{.*\}"/m)?.[0];
+      });
+    if (!rawData) throw new Error("couldn't retrieve data");
+
+    const data = JSON.parse(rawData);
+
+    return data;
+  } catch (err) {
+    if (err.response.status === 404) throw new AppError('Not found', 404);
+    else throw err;
+  }
+};
+
+////////////////////////////////////////////////////////
+//                     EXPORTS
+////////////////////////////////////////////////////////
+export default fetcher;

fetchers/getAnswers.js

@@ -0,0 +1,84 @@
+////////////////////////////////////////////////////////
+//                     IMPORTS
+////////////////////////////////////////////////////////
+// import log from '../utils/log.js';
+import fetcher from './fetcher.js';
+
+////////////////////////////////////////////////////////
+//                     FUNCTION
+////////////////////////////////////////////////////////
+const getAnswers = async slug => {
+  // getting data and destructuring it in case it exists
+  const res = await fetcher(slug);
+  if (!Object.entries(res).length) throw new Error('no data received!');
+
+  const {
+    data: { question: rawData },
+  } = JSON.parse(res);
+
+  // array containing all the answers with metadata
+  const ansArr = rawData.pagedListDataConnection.edges
+    .filter(ansObj => ansObj.node.answer !== undefined)
+    .map(ansObj => ({
+      text: JSON.parse(ansObj.node.answer.content).sections,
+      isViewable: !!ansObj.node.answer.viewerHasAccess,
+      creationTime: ansObj.node.answer.creationTime,
+      updatedTime: ansObj.node.answer.updatedTime,
+      numComments: ansObj.node.answer.numDisplayComments,
+      numUpvotes: ansObj.node.answer.numUpvotes,
+      numViews: ansObj.node.answer.numViews,
+      numShares: ansObj.node.answer.numSharers,
+      numAnswerRequests: ansObj.node.answer.numRequesters,
+      aid: ansObj.node.answer.aid,
+      isBusinessAnswer: ansObj.node.answer.businessAnswer,
+      author: {
+        uid: ansObj.node.answer.author.uid,
+        isAnon: ansObj.node.answer.author.isAnon,
+        avatar: ansObj.node.answer.author.profileImageUrl,
+        isVerified: ansObj.node.answer.author.isVerified,
+        profile: ansObj.node.answer.author.profileUrl,
+        name: `${ansObj.node.answer.author.names[0].givenName} ${ansObj.node.answer.author.names[0].familyName}`,
+        credential: ansObj.node.answer.authorCredential?.translatedString,
+        // additionalCredentials: ansObj.node.answer?.credibilityFacts.map(),
+      },
+      OriginalQuestion: {
+        text: JSON.parse(ansObj.node.answer.question.title).sections[0],
+        url: ansObj.node.answer.question.url,
+        qid: ansObj.node.answer.question.qid,
+        isDeleted: ansObj.node.answer.question.isDeleted,
+      },
+    }));
+
+  // main data object to be returned
+  const data = {
+    question: {
+      text: JSON.parse(rawData.title).sections[0],
+      url: rawData.url,
+      qid: rawData.qid,
+      idDeleted: rawData.isDeleted,
+      isViewable: rawData.isVisibleToViewer,
+      askerUid: rawData.asker.uid,
+    },
+    numAnswers: rawData.answerCount,
+    answers: ansArr,
+    topics: rawData.topics.map(topicObj => ({
+      tid: topicObj.tid,
+      name: topicObj.name,
+      url: topicObj.url,
+    })),
+    relatedQuestions: rawData.bottomRelatedQuestionsInfo.relatedQuestions.map(
+      questionObj => ({
+        qid: questionObj.qid,
+        url: questionObj.url,
+        text: JSON.parse(questionObj.title).sections[0],
+      })
+    ),
+  };
+
+  return data;
+};
+
+////////////////////////////////////////////////////////
+//                     EXPORTS
+////////////////////////////////////////////////////////
+export default getAnswers;