quatalog-site/js/search_helper.js

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JavaScript
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"use strict";
const search_helper = async function(event,from_course_page = true) {
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event.preventDefault();
// "a b cde 12" => "a b cde 12"
const input = document.getElementById("search").value.split(" ").join(" ");
var course_code = false;
if(input.length == 8) {
// "abcd1345" => ["abcd","1345"]
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course_code = input.match(/.{1,4}/g)
} else if(input.replace(/ |-/g,"").length == 8) {
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// "abcd - 1345" => ["abcd","1345"]
const arr = input.split(/(?:-| )+/);
if(arr.length == 2) course_code = arr;
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}
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// only do this logic if the string might be a course code
// avoid having to fetch the courses_list if it definitely isn't one
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if(course_code) {
// ["abcd","1345"] => "ABCD-1345"
course_code[0] = course_code[0].toUpperCase();
const code_str = course_code.join("-");
// check if "ABCD-1345" is a real course code
const course_exists = await fetch(
from_course_page ? "../courses_list.json" : "courses_list.json"
)
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.then(list => list.json())
.then(list => list.includes(code_str));
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// if it is, redirect to it
if(course_exists) {
if(from_course_page) {
location.href = code_str;
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} else {
location.href = "courses/" + code_str;
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}
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return;
}
}
if(from_course_page) {
location.href = "../search?search=" + encodeURIComponent(input);
} else {
location.href = "search?search=" + encodeURIComponent(input);
}
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}