fix assignment participants integration flow

.gitignore

@@ -11,6 +11,7 @@
 
 # production
 /build
+/dist
 
 # misc
 .DS_Store

src/App.tsx

@@ -56,6 +56,7 @@ import PartnerAdvertisements from 'components/SignupSheet/PartnerAdvertisements'
 import Duties from "./pages/Duties/Duties";
 import DutyEditor from "./pages/Duties/DutyEditor";
 import ReviewReportPage from "./pages/Reviews/ReviewReportPage";
+import AssignmentParticipants from "./pages/AssignmentParticipants/AssignmentParticipants";
 function App() {
   const router = createBrowserRouter([
     {
@@ -227,19 +228,7 @@ function App() {
 
         {
           path: "assignments/edit/:assignmentId/participants",
-          element: <Participants type="student_tasks" id={1} />,
-          children: [
-            {
-              path: "new",
-              element: <ParticipantEditor mode="create" type="assignments" />,
-              loader: loadParticipantDataRolesAndInstitutions,
-            },
-            {
-              path: "edit/:id",
-              element: <ParticipantEditor mode="update" type="assignments" />,
-              loader: loadParticipantDataRolesAndInstitutions,
-            },
-          ],
+          element: <AssignmentParticipants />,
         },
 
         {

src/components/Modals/ExportModal.tsx

@@ -3,6 +3,7 @@ import React, { useEffect, useState, memo, useCallback } from "react";
 import { Modal, Button, Form, Row, Col, OverlayTrigger, Tooltip } from "react-bootstrap";
 import useAPI from "../../hooks/useAPI";
 import { HttpMethod } from "../../utils/httpMethods";
+import { publicUrl } from "../../utils/publicUrl";
 
 /* =============================================================================
    Shared visual style — same as CreateTeams.tsx
@@ -26,19 +27,7 @@ const TABLE_TEXT: React.CSSProperties = {
    Icon utilities — same pattern as Import modal
 ============================================================================= */
 
-const getBaseUrl = (): string => {
-  if (typeof document !== 'undefined') {
-    const base = document.querySelector('base[href]') as HTMLBaseElement | null;
-    if (base?.href) return base.href.replace(/\/$/, '');
-  }
-  const fromGlobal = (globalThis as any)?.__BASE_URL__;
-  if (typeof fromGlobal === 'string' && fromGlobal) return fromGlobal.replace(/\/$/, '');
-  const fromProcess =
-    (typeof process !== 'undefined' && (process as any)?.env?.PUBLIC_URL) || '';
-  return String(fromProcess).replace(/\/$/, '');
-};
-
-const assetUrl = (rel: string) => `${getBaseUrl()}/${rel.replace(/^\//, '')}`;
+const assetUrl = (rel: string) => publicUrl(rel.replace(/^\//, ''));
 
 
 

src/components/Modals/ImportModal.tsx

@@ -17,6 +17,7 @@ import useAPI from "../../hooks/useAPI";
 import { HttpMethod } from "../../utils/httpMethods";
 import PreviewTable from "../Table/Table";
 import { ColumnDef } from "@tanstack/react-table";
+import { publicUrl } from "../../utils/publicUrl";
 
 /* ----------------------------------------
  *  Shared text styles for consistency
@@ -39,24 +40,7 @@ const TABLE_TEXT: React.CSSProperties = {
  *  Icon utilities — used for tooltip icons
  * ---------------------------------------- */
 
-/** Helper to resolve asset URLs correctly even under nested routes */
-const getBaseUrl = (): string => {
-  if (typeof document !== "undefined") {
-    const base = document.querySelector("base[href]") as HTMLBaseElement | null;
-    if (base?.href) return base.href.replace(/\/$/, "");
-  }
-
-  const fromGlobal = (globalThis as any)?.__BASE_URL__;
-  if (typeof fromGlobal === "string") return fromGlobal.replace(/\/$/, "");
-
-  const fromProcess =
-    (typeof process !== "undefined" && (process as any)?.env?.PUBLIC_URL) || "";
-
-  return String(fromProcess).replace(/\/$/, "");
-};
-
-/** Helper for converting relative asset paths to usable URLs */
-const assetUrl = (rel: string) => `${getBaseUrl()}/${rel.replace(/^\//, "")}`;
+const assetUrl = (rel: string) => publicUrl(rel.replace(/^\//, ""));
 
 /** Asset map */
 const ICONS = {

src/pages/AssignmentParticipants/AssignmentParticipants.css

@@ -0,0 +1,280 @@
+/* Container and Header */
+.assignment-participants-container {
+    padding: 1.5rem;
+    border-radius: 0.5rem;
+    width: 100%;
+    max-width: 100%;
+    margin: 1rem auto;
+}
+
+.assignment-participants-header {
+    font-size: 1.5rem;
+    font-weight: bold;
+    color: #333333;
+    margin-bottom: 1.5rem;
+}
+
+.section-label {
+    display: block;
+    font-weight: bold;
+    font-size: 1rem;
+    color: #333;
+    margin-bottom: 0.5rem;
+}
+
+/* Search Filter Section */
+.search-filter-section {
+    display: flex;
+    align-items: flex-start;
+    flex-wrap: nowrap;
+    gap: 1rem;
+    margin-bottom: 1rem;
+}
+
+.search-input {
+    color: #333;
+    font-size: 0.95rem;
+    font-weight: 500;
+    border: 1px solid #2563eb;
+    border-radius: 0.5rem;
+    background-color: #ffffff;
+    height: 42px;
+    width: 100%;
+    max-width: 440px;
+    flex: 1 1 320px;
+    box-sizing: border-box;
+    cursor: text;
+    transition: border-color 0.3s ease, box-shadow 0.3s ease;
+    margin: 0;
+}
+
+.search-input::placeholder {
+    color: #aaa;
+    font-weight: 400;
+}
+
+.filter-select {
+    color: #333;
+    font-size: 0.95rem;
+    font-weight: 500;
+    padding: 0 1rem;
+    height: 42px;
+    width: 180px;
+    min-width: 180px;
+    flex: 0 0 180px;
+    border: 1px solid #2563eb;
+    border-radius: 0.5rem;
+    background-color: #ffffff;
+    cursor: pointer;
+    transition: border-color 0.3s ease, box-shadow 0.3s ease;
+    margin: 0;
+}
+
+.filter-select:hover {
+    /* Slightly darker shade for hover */
+    border-color: #1d4ed8;
+    /* Soft blue glow */
+    box-shadow: 0 0 5px rgba(29, 78, 216, 0.4);
+}
+
+.filter-select:focus {
+    outline: none;
+    border-color: #1d4ed8;
+    /* Blue focus ring */
+    box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.3);
+}
+
+.filter-select option {
+    font-size: 1rem;
+    padding: 0.5rem;
+}
+
+/* Add User Section */
+.add-user-section {
+    display: flex;
+    width: 100%;
+    justify-content: space-between;
+    flex-wrap: wrap;
+    align-content: center;
+    gap: 1rem;
+    margin-bottom: 0.75rem;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.user-permissions {
+    display: flex;
+    gap: 1rem;
+}
+
+.permission-yes,
+.permission-no {
+    font-size: 1.5rem;
+    /* Increase icon size */
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.user-input {
+    flex: 1;
+    min-width: 400px;
+    height: 42px;
+    border: 1px solid #ccc;
+    border-radius: 0.25rem;
+    font-size: 16px;
+    box-sizing: border-box;
+}
+
+.user-input::placeholder {
+    color: #aaa;
+    font-weight: 400;
+}
+
+.add-user-button {
+    color: #10b981;
+    min-width: 90px;
+    height: 42px;
+    /* Green tone for positive action */
+    font-weight: 600;
+    cursor: pointer;
+    background-color: transparent;
+    border: 1px solid transparent;
+    padding: 0.4em 0.8em;
+    border-radius: 4px;
+    border-color: #10d6a6;
+    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
+}
+
+.add-user-button:hover {
+    color: #059669;
+    /* Darker green shade for hover effect */
+    background-color: rgba(16, 185, 129, 0.1);
+    border-color: #10b981;
+    text-decoration: none;
+}
+
+.add-user-button:focus {
+    /* Focus ring for accessibility */
+    outline: none;
+    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.4);
+}
+
+/* Role Radio Group Styling */
+.role-radio-group {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.75rem;
+    justify-content: flex-end;
+    align-items: flex-start;
+    padding: 0 0.5rem;
+    margin-top: -0.25rem;
+    margin-bottom: 0.25rem;
+    width: 100%;
+}
+
+.role-radio-option {
+    padding: 0 0.85rem;
+    position: relative;
+    display: flex;
+    align-items: center;
+    font-size: 1rem;
+    color: #333333;
+}
+
+.role-radio-option input {
+    margin-right: 0.35rem;
+    transform: scale(1.15);
+    transform-origin: center;
+}
+
+.role-radio-option img {
+    width: 18px;
+    height: 18px;
+}
+
+/* Info Icon Styling */
+.info-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 1rem;
+    height: 1rem;
+    margin-left: 0.5rem;
+    background-color: #4a90e2;
+    color: #ffffff;
+    font-size: 0.75rem;
+    font-weight: bold;
+    border-radius: 50%;
+    cursor: pointer;
+    position: relative;
+    transition: background-color 0.2s ease;
+    z-index: 20;
+}
+
+.info-icon:hover {
+    background-color: #357bd8;
+}
+
+.info-icon:hover::after {
+    content: attr(title);
+    position: absolute;
+    top: -1.5rem;
+    left: auto;
+    right: 0;
+    background-color: #333;
+    color: #fff;
+    padding: 0.25rem 0.5rem;
+    border-radius: 0.25rem;
+    font-size: 0.75rem;
+    white-space: normal;
+    transform: translateX(0);
+    z-index: 10;
+    word-wrap: break-word;
+}
+
+/* Role Select and Submit Button */
+.role-action {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.role-select {
+    padding: 8px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    font-size: 14px;
+}
+
+@media (max-width: 768px) {
+
+    .add-user-section,
+    .user-permissions {
+        width: 100%;
+        flex-direction: column;
+    }
+
+    .search-filter-section {
+        flex-wrap: wrap;
+    }
+
+    .filter-select {
+        width: 100%;
+        min-width: 0;
+        flex: 1 1 100%;
+    }
+
+    .role-radio-group {
+        margin-top: 1rem;
+    }
+
+    .user-input {
+        margin-bottom: 0;
+        width: 100%;
+    }
+}
+
+.error-message {
+    margin-top: 0.5rem;
+    margin-bottom: 1rem;
+}