quotes-nextjs

commit 4b0d648fff82dcde59358522914de7a0c8b79c98
parent 3131c8ab9512c1f5b5b0759953d82a42ca56fb12
Author: Agastya Chandrakant <me@hanabi.in>
Date:   Thu, 15 Apr 2021 10:45:27 +0530

minimise number of read-writes

Diffstat:
A
generateRandom.js
 | 
77
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
helperFns.js
 | 
2
+-
M
package.json
 | 
5
+++--
M
pages/random.js
 | 
20
+-------------------

4 files changed, 82 insertions(+), 22 deletions(-)
diff --git a/generateRandom.js b/generateRandom.js
@@ -0,0 +1,77 @@
+const { readdir, readFile } = require("fs/promises");
+const { join } = require("path");
+const { createWriteStream } = require("fs");
+
+async function main() {
+  try {
+    const quotesANDauthors = [];
+    const authors = await readdir("quotes");
+    for (const author of authors) {
+      const allFiles = await readdir(join("quotes", author));
+      const { details, quotes } = getDetailsANDQuotes(allFiles);
+
+      if (!details) throw new Error(`Error finding details`);
+      if (quotes.length < 1) throw new Error(`Not enough quotes`);
+
+      for (const quote of quotes) {
+        const { data } = await readFrontMatter(author, quote);
+
+        const { draft } = data;
+        if (draft) continue;
+
+        const quoteObj = createQuoteObj(author, data, quote);
+        quotesANDauthors.push(quoteObj);
+      }
+    }
+
+    const writeStream = createWriteStream("./random-quotes.js");
+    writeStream.write(`module.exports = [`);
+    for (const obj of quotesANDauthors) writeStream.write(JSON.stringify(obj) + ",");
+    writeStream.write("]");
+  } catch (err) {
+    errHandler(err);
+  }
+}
+
+main();
+
+const errHandler = (err) => {
+  console.error(err);
+};
+
+async function readFrontMatter(author, quote) {
+  const matter = require("gray-matter");
+
+  try {
+    const fileBuffer = await readFile(join("quotes", author, quote));
+    const fileStr = fileBuffer.toString();
+    const frontMatter = matter(fileStr);
+    return frontMatter;
+  } catch (err) {
+    errHandler(err);
+  }
+}
+
+function makeUri(quote) {
+  return quote.replace(/\.md$/, "");
+}
+
+function getDetailsANDQuotes(allFiles) {
+  const details = allFiles.filter((_) => _ == "data.md")[0];
+  const quotes = allFiles.filter((_) => _ != "data.md");
+  return { details, quotes };
+}
+
+function createQuoteObj(author, data, quote) {
+  const { attributed, date, misattributed, title, unverified } = data;
+  const uri = makeUri(quote);
+  return {
+    attributed,
+    author,
+    date,
+    misattributed,
+    title,
+    unverified,
+    uri,
+  };
+}
diff --git a/helperFns.js b/helperFns.js
@@ -1,4 +1,4 @@
-export const join = require("path").join;
+const join = require("path").join;
 
 export const errHandler = (err) => {
   console.error(err);
diff --git a/package.json b/package.json
@@ -4,8 +4,9 @@
   "private": true,
   "scripts": {
     "dev": "next dev",
-    "build": "next build",
-    "start": "next start"
+    "build": "next build && node generateRandom.js",
+    "start": "next start",
+    "prestart": "node generateRandom.js"
   },
   "dependencies": {
     "gray-matter": "^4.0.2",
diff --git a/pages/random.js b/pages/random.js
@@ -43,26 +43,8 @@ export async function getServerSideProps() {
     shuffleAndGiveRandom,
   } = require("../helperFns.js");
 
-  const quotesANDauthors = [];
   try {
-    const authors = await readdir("quotes");
-    for (const author of authors) {
-      const allFiles = await readdir(join("quotes", author));
-      const { details, quotes } = getDetailsANDQuotes(allFiles);
-
-      if (!details) throw new Error(`Error finding details`);
-      if (quotes.length < 1) throw new Error(`Not enough quotes`);
-
-      for (const quote of quotes) {
-        const { data } = await readFrontMatter(author, quote);
-
-        const { draft } = data;
-        if (draft) continue;
-
-        const quoteObj = createQuoteObj(author, data, quote);
-        quotesANDauthors.push(quoteObj);
-      }
-    }
+    const quotesANDauthors = require("../random-quotes.js");
     const randomQuote = shuffleAndGiveRandom(quotesANDauthors);
 
     const { author, uri } = randomQuote;