Greenhouse code with location filter

greenhouse-with-location.js

/*
Permission is hereby granted, free of charge, to any person obtaining a copy of this
software and associated documentation files (the "Software"), to deal in the Software
without restriction, including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

// Global variables defined here
const departmentIds = [];
const root = document.getElementById("root");
const loading = document.getElementById("loading");
const jobFilter = document.getElementById("filter");
const locationFilter = document.getElementById("location-filter");
const errorWrapper = document.getElementById("errwrapper");
const errorText = document.getElementById("errtext");

// Filtering function for location select element
locationFilter.onchange = function () {
  const jobListings = document.querySelectorAll(".job-listing");

  let selectedLocation = this.value;
  if (selectedLocation == "all") {
    jobListings.forEach((jobListing) => {
      jobListing.style.display = "flex";
      console.log("all jobs");
    });
  } else if (selectedLocation == "San Francisco") {
    jobListings.forEach((jobListing) => {
      let location = jobListing.querySelector(".job-location");
      if (location.textContent.includes("San Francisco")) {
        jobListing.style.display = "flex";
      } else {
        jobListing.style.display = "none";
      }
    });
  } else if (selectedLocation == "US Remote") {
    jobListings.forEach((jobListing) => {
      let location = jobListing.querySelector(".job-location");
      if (location.textContent.includes("US Remote")) {
        jobListing.style.display = "flex";
      } else {
        jobListing.style.display = "none";
      }
    });
  } else if (selectedLocation == "ON/BC, Canada") {
    jobListings.forEach((jobListing) => {
      let location = jobListing.querySelector(".job-location");
      if (location.textContent.includes("ON/BC, Canada")) {
        jobListing.style.display = "flex";
      } else {
        jobListing.style.display = "none";
      }
    });
  }
};

// Filtering function for select element
jobFilter.onchange = function () {
  let selectedSection = this.value;
  if (selectedSection == "all") {
    let filtered = document.querySelectorAll(".department-section");
    filtered.forEach((filtered) => {
      filtered.style.display = "block";
    });
  } else {
    let filtered = document.querySelectorAll(".department-section");
    filtered.forEach((filtered) => {
      filtered.style.display = "none";
    });
    document.getElementById(selectedSection).style.display = "block";
  }
};

// Triggers when the DOM is ready
window.addEventListener("DOMContentLoaded", (event) => {
  const handleError = (response) => {
    if (!response.ok) {
      throw Error(` ${response.status} ${response.statusText}`);
    } else {
      return response.json();
    }
  };
  fetch("https://boards-api.greenhouse.io/v1/boards/" + ghSlug + "/departments/")
    .then(handleError)
    .then((data) => {
      data.departments.forEach((department) => {
        if (department.jobs.length !== 0) {
          departmentIds.push(department.id);
          let sectionWrapper = document.getElementById("section");
          let sectionClone = sectionWrapper.cloneNode(true);
          sectionClone.id = department.id;
          root.appendChild(sectionClone);
          let option = document.createElement("option");
          option.text = department.name;
          option.value = department.id;
          jobFilter.add(option);
        } else {
          null;
        }
      });
    })
    .catch(function writeError(err) {
      console.error(err);
    })
    .finally(() => {
      writeJobs();
    });
});
// Triggered in finally above
function writeJobs() {
  departmentIds.forEach((departmentId) => {
    const handleError = (response) => {
      if (!response.ok) {
        throw Error(` ${response.status} ${response.statusText}`);
      } else {
        return response.json();
      }
    };
    fetch("https://boards-api.greenhouse.io/v1/boards/" + ghSlug + "/departments/" + departmentId)
      .then(handleError)
      .then((data) => {
        let parent = document.getElementById(data.id);
        let parentContainer = parent.getElementsByClassName("container")[0];
        let sectionHeading = document.getElementById("dname");
        let sectionTitle = sectionHeading.cloneNode(true);
        sectionTitle.innerText = data.name;
        parentContainer.appendChild(sectionTitle);
        data.jobs.forEach((job) => {
          let listing = document.getElementById("listing");
          let ghListing = listing.cloneNode(true);
          ghListing.id = job.id;
          let jobTitle = ghListing.getElementsByClassName("job-title")[0];
          jobTitle.innerText = job.title;
          jobTitle.setAttribute("href", job.absolute_url);
          let jobLocation = ghListing.getElementsByClassName("job-location")[0];
          jobLocation.innerText = job.location.name;
          parentContainer.appendChild(ghListing);
        });
      })
      .catch(function writeError(err) {
        console.error(err);
      })
      .finally(() => {
        loading.classList.add("invisible");
        loading.remove();
        root.classList.add("visible");
      });
  });
}