DigitalConsumer.FixMyGlass/src/digital-components/question-chain/question-chain.vue

<template>
    <div v-for="(q, i) in questions" :key="i">
        <transition appear name="fade" mode="out-in">
            <buttonQuestion
                v-if="q.answerSelected || q.questionSequence === currentQuestionNum"
                class="radioQuestion"
                :class="q.questionSequence === currentQuestionNum && 'current-question'"
                :questionText="q.questionText"
                :answers="q.answers"
                :groupName="`question-${index}-${q.questionSequence}`"
                :modelValue="q.answerSelected"
                @update:modelValue="handleAnswer(q, $event)"
                isRequired
                :validationRules="validationRules" />
        </transition>
    </div>
</template>

<script>
import buttonQuestion from "@/digital-components/button-question/button-question";
import { useValidateForm } from "vee-validate";

export default {
    name: "questionChain",
    data() {
        return {
            currentQuestionNum: 0,
            questions: [],
        };
    },
    props: {
        questionData: Array,
        validationRules: String,
        modelValue: Object,
        index: Number,
        answerKey: String,
    },
    async created() {
        // do a test validation check upon create to prevent out of sync / incorrect valid states
        await useValidateForm(); // NOTE: needs to have async/await here; tested and won't work without it

        this.questionData.map((q, i) => {
            const question = {
                questionText: q.questionText,
                questionSequence: q.questionSequence,
                answers: q.answers.map((a) => {
                    return {
                        buttonLabel: a.answerText,
                        // Name will either be nextQuestionSequence or answerResult
                        // Name will be used by list-button as the input value.
                        // It must be a single string or number, so concatenating together a string with
                        //       4 pieces of data separated by pipe characters:
                        //       question number|type of answer|answer value|answer text
                        value: a.nextQuestionSequence
                            ? q.questionSequence +
                              "|nextQuestion|" +
                              a.nextQuestionSequence +
                              "|" +
                              a.answerText
                            : q.questionSequence + "|answer|" + a.answerResult + "|" + a.answerText,
                        nextQuestionSequence: a.nextQuestionSequence,
                        answerResult: a.answerResult,
                        questionSequence: q.questionSequence,
                        questionType: a.nextQuestionSequence ? "nextQuestion" : "answer",
                    };
                }),
                answerSelected: q.answerSelected || "",
            };
            if (!q.suppressThisQuestion) {
                this.questions.push(question);
            }
        });

        if (!this.modelValue?.length > 0 && this.questions.length > 0) {
            // set this.currentQuestionNum to first valid question
            this.currentQuestionNum = this.questions[0].questionSequence;
            // scroll the next question into view
            this.$nextTick(() => {
                document.querySelector(".current-question")?.scrollIntoView({ behavior: "smooth" });
            });
        }
    },
    methods: {
        handleAnswer(question, returnedAnswer) {
            /*
                returnedAnswer example format:
                "1|answer|DD11132|Yes"
            */

            question.answerSelected = returnedAnswer;
            const isQuestionChainComplete = this.getQuestionChainAnswerIfComplete(returnedAnswer);

            if (isQuestionChainComplete) {
                this.$emit("update:modelValue", isQuestionChainComplete);
            }
        },
        getQuestionChainAnswerIfComplete(returnedAnswer) {
            // this method will return either a final answer or Boolean false
            if (!returnedAnswer) {
                return false;
            }

            // returnedAnswer examples:
            //   "1|nextQuestion|3|No"
            //   "5|answer|DW02104|Yes"

            const returnedAnswerArray = returnedAnswer.split("|");
            const questionNum = parseInt(returnedAnswerArray[0]);
            const questionType = returnedAnswerArray[1];
            const questionAnswer = returnedAnswerArray[2];
            const answeredQuestions = [];

            this.questions.forEach((q) => {
                // find this question and mark it as "answered" by populating answerSelected
                if (q.questionSequence === questionNum) {
                    q.answerSelected = returnedAnswer;
                }
                // remove all answers AFTER this question...
                //      (needed in case user is changing previously answered questions)
                if (q.questionSequence > questionNum) {
                    delete q.answerSelected;
                }
                if (q.answerSelected) {
                    answeredQuestions.push({
                        questionText: q.questionText,
                        selectedAnswer: q.answerSelected,
                        selectedAnswerText: q.answerSelected.split("|")[3],
                        questionNum: q.questionSequence,
                    });
                }
            });

            // return false if there's a nextQuestion... or return an object with final answers (truthy)
            if (questionType === "nextQuestion") {
                // update to next question index
                this.currentQuestionNum = parseInt(questionAnswer); // update count to display next question
                // scroll the next question into view
                this.$nextTick(() => {
                    document
                        .querySelector(".current-question")
                        .scrollIntoView({ behavior: "smooth" });
                });
                return false;
            } else {
                // reset current question index (removes .current-question class)
                this.currentQuestionNum = 0; // reset count

                // return an object with the part answer, all the answered questions, and the part index
                return {
                    answerResult: questionAnswer,
                    answeredQuestions: answeredQuestions,
                    index: this.index,
                };
            }
        },
    },
    components: {
        buttonQuestion,
    },
};
</script>