GCTC-NTGC / TalentCloud

/* eslint camelcase: "off", @typescript-eslint/camelcase: "off" */

import React, { useEffect, useMemo } from "react";

import ReactDOM from "react-dom";

import { useDispatch, useSelector } from "react-redux";

import RootContainer from "../../RootContainer";

import {

  ResponseScreeningBuckets as BucketTypes,

  ResponseReviewStatusId,

  ExcludedDepartments,

} from "../../../models/lookupConstants";

import { ResponseScreeningBuckets } from "../../../models/localizedConstants";

import { getDepartments as getDepartmentsAction } from "../../../store/Department/deptActions";

import {

  Application,

  Department,

  ApplicationReview,

  Email,

} from "../../../models/types";

import ApplicantBucket from "./ApplicantBucket";

import { Portal } from "../../../models/app";

import {

  fetchApplicationsForJob,

  updateApplicationReview as updateApplicationReviewAction,

  fetchReferenceEmails,

  sendReferenceEmail as sendReferenceEmailAction,

  fetchApplication,

} from "../../../store/Application/applicationActions";

import {

  getApplicationsByJob,

  allIsFetchingReferenceEmailsByApplication,

  getAllReferenceEmails,

} from "../../../store/Application/applicationSelector";

import { RootState } from "../../../store/store";

import { getDepartments } from "../../../store/Department/deptSelector";

import { fakeReferenceEmail } from "../../../fakeData/fakeApplications";

import { hasKey } from "../../../helpers/queries";

interface ResponseScreeningPageProps {

  applications: Application[];

  departments: Department[];

  handleUpdateReview: (review: ApplicationReview) => Promise<ApplicationReview>;

  portal: Portal;

  referenceEmails: {

    director: {

      byApplicationId: {

        [applicationId: number]: Email;

      };

    };

    secondary: {

      byApplicationId: {

        [applicationId: number]: Email;

      };

    };

  };

  requestReferenceEmails: (applicationId: number) => void;

  sendReferenceEmail: (

    applicationId: number,

    referenceType: "director" | "secondary",

  ) => Promise<void>;

}

const ResponseScreeningPage: React.FC<ResponseScreeningPageProps> = ({

  applications,

  departments,

  handleUpdateReview,

  portal,

  referenceEmails,

  requestReferenceEmails,

  sendReferenceEmail,

}): React.ReactElement => (

  <>

    {Object.keys(ResponseScreeningBuckets).map((bucket) => {

      const bucketApplications = applications.filter((application) => {

        if (bucket === BucketTypes.ReadyToAllocate) {

          return (

            application.application_review?.review_status_id ===

            ResponseReviewStatusId.ReadyToAllocate

          );

        }

        if (bucket === BucketTypes.Allocated) {

          return (

            application.application_review?.review_status_id ===

            ResponseReviewStatusId.Allocated

          );

        }

        if (bucket === BucketTypes.Unavailable) {

          return (

            application.application_review?.review_status_id ===

            ResponseReviewStatusId.NotAvailable

          );

        }

        if (bucket === BucketTypes.DoesNotQualify) {

          return (

            application.application_review?.review_status_id ===

            ResponseReviewStatusId.ScreenedOut

          );

        }

        // Multiple statuses appear in the "Under Consideration" bucket

        return (

          application.application_review === undefined ||

          application.application_review?.review_status_id === null ||

          application.application_review?.review_status_id ===

            ResponseReviewStatusId.AssessmentRequired ||

          application.application_review?.review_status_id ===

            ResponseReviewStatusId.ReadyForReference

        );

      });

      return (

        <ApplicantBucket

          key={bucket}

          applications={bucketApplications}

          bucket={bucket}

          departments={departments}

          handleUpdateReview={handleUpdateReview}

          portal={portal}

          referenceEmails={referenceEmails}

          requestReferenceEmails={requestReferenceEmails}

          sendReferenceEmail={sendReferenceEmail}

        />

      );

    })}

  </>

);

interface ResponseScreeningDataFetcherProps {

  jobId: number;

  portal: Portal;

}

const ResponseScreeningDataFetcher: React.FC<ResponseScreeningDataFetcherProps> = ({

  jobId,

  portal,

}) => {

  const dispatch = useDispatch();

  // Load Applications for provided Job

  useEffect(() => {

    dispatch(fetchApplicationsForJob(jobId));

  }, [dispatch, jobId]);

  const applications = useSelector((state: RootState) =>

    getApplicationsByJob(state, { jobId }),

  );

  // Load all departments

  useEffect(() => {

    dispatch(getDepartmentsAction());

  }, [dispatch]);

  const departments = useSelector(getDepartments).filter(

    (department) =>

      department.id !== ExcludedDepartments.StrategicTalentResponse,

  );

  const updateApplicationReview = async (

    review: ApplicationReview,

  ): Promise<ApplicationReview> => {

    const result = await dispatch(updateApplicationReviewAction(review));

    if (!result.error) {

      const resultReview = await result.payload;

      return resultReview;

    }

    return Promise.reject(result.payload);

  };

  // Load micro-reference emails

  const referenceEmails = useSelector(getAllReferenceEmails);

  const isFetchingReferenceEmails = useSelector(

    allIsFetchingReferenceEmailsByApplication,

  );

  const requestReferenceEmails = (applicationId: number): void => {

    if (isFetchingReferenceEmails[applicationId]) {

      return;

    }

    if (

      hasKey(referenceEmails.director.byApplicationId, applicationId) &&

      hasKey(referenceEmails.secondary.byApplicationId, applicationId)

    ) {

      return;

    }

    dispatch(fetchReferenceEmails(applicationId));

  };

  // Sending Emails

  const sendReferenceEmail = async (

    applicationId: number,

    refernceType: "director" | "secondary",

  ): Promise<void> => {

    await dispatch(sendReferenceEmailAction(applicationId, refernceType));

    // Reload application after sending email to sync the "email_sent" fields of the ApplicationReview.

    return dispatch(fetchApplication(applicationId));

  };

  return (

    <ResponseScreeningPage

      applications={applications}

      departments={departments}

      handleUpdateReview={updateApplicationReview}

      portal={portal}

      referenceEmails={referenceEmails}

      requestReferenceEmails={requestReferenceEmails}

      sendReferenceEmail={sendReferenceEmail}

    />

  );

};

const container = document.getElementById("response-screening-wrapper");

if (container !== null) {

  if ("jobId" in container.dataset && "portal" in container.dataset) {

    const jobId = Number(container.dataset.jobId as string);

    const portal = container.dataset.portal as Portal;

    ReactDOM.render(

      <RootContainer>

        <ResponseScreeningDataFetcher jobId={jobId} portal={portal} />

      </RootContainer>,

      container,

    );

  }

}