@instructure/quiz-interactions/src/records/interactions/fill_blank.js

A React UI component Library for quiz interaction types.

import React from 'react'
import {v4 as uuid} from 'uuid'
import findIndex from 'lodash/findIndex'

import {each, rule, onSelf} from 'instructure-validations'
import {Text} from '@instructure/ui-text'

import InteractionType from '../InteractionType'
import {FILL_BLANK_SLUG} from '../../interaction_slugs'
import {noDuplicatesMessage, presenceMessage} from '../../util/validationHelpers'
import t from '@instructure/quiz-i18n/format-message'

// ================
// ================
//     HELPERS
// ================
// ================
function newId() {
  return uuid()
}

// ================
// ================
//   VALIDATIONS
// ================
// ================

function scoringDatumValidator(val) {
  let editDistanceRules = []
  if (val.scoringAlgorithm === 'TextCloseEnough') {
    editDistanceRules = [
      rule('numeric', {
        message: t('Levenshtein Distance must be a number'),
        minMessage: t('Levenshtein Distance must be greater than zero'),
        maxMessage: t('Levenshtein Distance must be less than the length of the blank text'),
        requireInteger: true,
        integerMessage: t('Levenshtein Distance must be an integer'),
        min: 1,
        max: val.scoringData.blankText.length,
      }),
    ]
  }

  const textInChoicesRules =
    val.scoringAlgorithm === 'TextInChoices'
      ? // each is for multiple specified correct answers
        [
          each(rule('presence', {message: presenceMessage(t('Correct value'))})),
          onSelf(
            rule('listSize', {
              minMessage: t('You must have an answer'),
              min: 1,
              allowNullOrUndefined: true,
            }),
          ),
        ]
      : [onSelf(rule('presence', {message: presenceMessage(t('Correct value'))}))]

  return {
    scoringData: {
      editDistance: editDistanceRules,
      value: textInChoicesRules,
    },
  }
}

// ================
// ================
//      RECORD
// ================
// ================

export default class FillBlankInteractionType extends InteractionType {
  constructor(obj) {
    super()
    super.initializeProps(obj)
  }

  slug = FILL_BLANK_SLUG
  hideResultStem = true
  translatedName = t('Fill in the Blank')
  getDefaultScoringData = () => ({value: []})
  getDefaultInteractionData = () => ({
    stemItems: [{id: newId(), type: 'text', value: '', position: 1}],
    blanks: [],
  })

  static validations() {
    const eachBlankValidator = {
      choices: [
        onSelf(
          rule('listSize', {
            minMessage: t('You must have more than one choice'),
            min: 2,
            allowNullOrUndefined: true,
          }),
        ),
        rule('noDuplicates', {field: 'itemBody', message: noDuplicatesMessage(t('Choice'))}),
        each({
          itemBody: [rule('presence', {message: presenceMessage(t('Choice'))})],
        }),
      ],
    }

    const allBlanksValidator = onSelf(
      rule('listSize', {
        minMessage: t('You must have a blank. e.g.: "Roses are `red`, violets are `blue`"'),
        min: 1,
      }),
    )

    return {
      interactionData: {
        blanks: [allBlanksValidator, each(eachBlankValidator)],
      },
      scoringData: {
        value: [each(scoringDatumValidator)],
      },
    }
  }

  getDefaultUserResponse() {
    return {value: []}
  }

  hasResponse(resp, intData) {
    const numBlanks = intData.blanks.length
    const numWithResponse = resp.filter(blank => blank.value).length
    return numBlanks === numWithResponse
  }

  getRenderedResponse = (responseValue, interactionData = {stemItems: [], blanks: []}) => {
    return (
      <Text color="primary">
        {responseValue
          .map(value => {
            const blankPosition = findIndex(interactionData.blanks, blank => blank.id === value.id)
            const blank = blankPosition >= 0 && interactionData.blanks[blankPosition]
            let valueText = ''
            if (blank && blank.answerType === 'openEntry') {
              valueText = value.value
            } else if (blank) {
              const blankChoice = blank.choices.find(choice => choice.id === value.value)
              valueText = blankChoice ? blankChoice.itemBody : ''
            }
            return t('Blank {blankPosition, number}: {valueText}', {
              blankPosition: blankPosition >= 0 ? blankPosition + 1 : '',
              valueText,
            })
          })
          .join(', ')}
      </Text>
    )
  }
}