Fetching pronoun data from a csv

app.js

@@ -1,7 +1,12 @@
 import express from 'express'
 import { engine } from 'express-handlebars'
+import fetchData from './data.js'
 
 const app = express()
+const data = fetchData()
+
+// TODO: Use this data haha!
+console.log('Data, ready and waiting!', data)
 
 app.engine('handlebars', engine())
 app.set('view engine', 'handlebars')
@@ -9,7 +14,7 @@ app.set('views', './src/views')
 
 app.use(express.static('dist'))
 
-app.get('/', (req, res) => {
+app.get('/', () => {
   res.render('home')
 })
 

data.js

@@ -0,0 +1,36 @@
+import fs from 'fs'
+
+const databaseCSV = fs.readFileSync('database.csv', {encoding:'utf8', flag:'r'})
+
+export function splitNewLines(string) {
+  return string.split(/\n/)
+}
+
+export function cleanupArrayOfStrings(arrayOfStrings) {
+  return arrayOfStrings
+    .map(line => line.trim())
+    .filter(line => line != '')
+}
+
+export function stringCsvToDataObject(string) {
+  let splitString = string.split(',')
+  if (splitString[2].trim() == '') splitString[2] = splitString[1]
+
+  const [
+    nominative,
+    accusative,
+    pronominalPossessive,
+    predicativePossessive,
+    reflexive,
+  ] = cleanupArrayOfStrings(splitString)
+
+  return {
+    nominative, accusative, pronominalPossessive, predicativePossessive, reflexive
+  }
+}
+
+export default function() {
+  const databaseCSV = fs.readFileSync('database.csv', {encoding:'utf8', flag:'r'})
+  return cleanupArrayOfStrings(splitNewLines(databaseCSV)).map(line => stringCsvToDataObject(line))
+}
+

database.csv

@@ -0,0 +1,3 @@
+she,her,,hers,herself
+he,him,,his,himself
+they,them,,their,themself

package.json

@@ -22,9 +22,11 @@
   "homepage": "https://gitlab.com/gaiety/pronoun-monster#readme",
   "type": "module",
   "devDependencies": {
+    "ava": "^5.2.0",
     "concurrently": "^7.6.0",
     "express": "^4.18.2",
     "express-handlebars": "^7.0.2",
+    "fs": "^0.0.1-security",
     "tailwindcss": "^3.2.7"
   }
 }

tests/data-test.js

@@ -0,0 +1,55 @@
+import fs from 'fs'
+import test from 'ava'
+import fetchData, { splitNewLines, cleanupArrayOfStrings, stringCsvToDataObject } from '../data.js'
+
+test('splitNewLines', t => {
+  const result = splitNewLines(`foo\nbar`)
+
+  t.deepEqual(result, ['foo', 'bar'])
+})
+
+test('cleanupArrayOfStrings', t => {
+  const result = cleanupArrayOfStrings([
+    '',
+    ' foo',
+    'bar ',
+    ''
+  ])
+
+  t.deepEqual(result, ['foo', 'bar'])
+})
+
+test('clean an array made from a string of new lines', t => {
+  const result = cleanupArrayOfStrings(
+    splitNewLines(`
+      foo
+      bar
+    `)
+  )
+
+  t.deepEqual(result, ['foo', 'bar'])
+})
+
+test('stringCsvToDataObject', t => {
+  const result = stringCsvToDataObject('they,them,them, their,themself')
+
+  t.deepEqual(result, {
+    nominative: 'they', accusative: 'them', pronominalPossessive: 'them', predicativePossessive: 'their', reflexive: 'themself'
+  })
+})
+
+test('stringCsvToDataObject with missing pronominalPossessive', t => {
+  const result = stringCsvToDataObject('they,them,,their,themself')
+
+  t.deepEqual(result, {
+    nominative: 'they', accusative: 'them', pronominalPossessive: 'them', predicativePossessive: 'their', reflexive: 'themself'
+  })
+})
+
+test('database.csv loads into array of valid data', t => {
+  const data = fetchData()
+
+  t.truthy(Array.isArray(data))
+  t.is(typeof data[0], 'object')
+  t.is(typeof data[0].nominative, 'string')
+})