Create ClassEnrollments.jsx

frontend/src/components/admin/ClassEnrollments.jsx

@@ -0,0 +1,132 @@
+// frontend/src/components/admin/ClassEnrollments.jsx
+import React, { useState } from "react";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import api from "../../api/client";
+
+export default function ClassEnrollments({ classData, onClose }) {
+  const queryClient = useQueryClient();
+  const [email, setEmail] = useState("");
+
+  const classId = classData?.id;
+
+  const {
+    data: enrollments = [],
+    isLoading,
+  } = useQuery({
+    queryKey: ["class-enrollments", classId],
+    enabled: !!classId,
+    queryFn: async () => {
+      const res = await api.get(`/admin/classes/${classId}/enrollments`);
+      return Array.isArray(res.data) ? res.data : [];
+    },
+    initialData: [],
+  });
+
+  const inviteMutation = useMutation({
+    mutationFn: async (payload) => {
+      const res = await api.post(
+        `/admin/classes/${classId}/invite`,
+        payload
+      );
+      return res.data;
+    },
+    onSuccess: () => {
+      setEmail("");
+      queryClient.invalidateQueries({ queryKey: ["class-enrollments", classId] });
+    },
+  });
+
+  const removeMutation = useMutation({
+    mutationFn: async (enrollmentId) => {
+      await api.delete(
+        `/admin/classes/${classId}/enrollments/${enrollmentId}`
+      );
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["class-enrollments", classId] });
+    },
+  });
+
+  function handleInvite(e) {
+    e.preventDefault();
+    if (!email.trim()) return;
+    inviteMutation.mutate({ student_email: email.trim() });
+  }
+
+  return (
+    <div className="fixed inset-0 z-40 flex items-center justify-center bg-black/30">
+      <div className="w-full max-w-xl bg-white rounded-2xl shadow-xl border border-stone-200 p-5">
+        <div className="flex justify-between items-center mb-4">
+          <div>
+            <h2 className="text-sm font-semibold text-stone-900">
+              Enrollments – {classData?.name}
+            </h2>
+            <p className="text-xs text-stone-500">
+              Invite students by email and manage their enrollment.
+            </p>
+          </div>
+          <button
+            type="button"
+            onClick={onClose}
+            className="text-xs text-stone-500 hover:text-stone-800"
+          >
+            Close
+          </button>
+        </div>
+
+        {/* Invite form */}
+        <form onSubmit={handleInvite} className="mb-4 flex gap-3">
+          <input
+            type="email"
+            placeholder="student@example.com"
+            className="flex-1 rounded-lg border border-stone-200 px-3 py-2 text-sm focus:outline-none focus:ring-1 focus:ring-red-500"
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+          />
+          <button
+            type="submit"
+            disabled={inviteMutation.isPending}
+            className="rounded-lg bg-red-600 hover:bg-red-700 text-white text-sm font-medium px-4 py-2 disabled:opacity-60"
+          >
+            {inviteMutation.isPending ? "Sending..." : "Invite"}
+          </button>
+        </form>
+
+        {/* Enrollments list */}
+        <div className="border-t border-stone-100 pt-3 max-h-64 overflow-y-auto">
+          {isLoading ? (
+            <div className="py-3 text-sm text-stone-500">
+              Loading enrollments...
+            </div>
+          ) : enrollments.length === 0 ? (
+            <div className="py-3 text-sm text-stone-500">
+              No enrollments yet.
+            </div>
+          ) : (
+            <ul className="divide-y divide-stone-100 text-sm">
+              {enrollments.map((en) => (
+                <li key={en.id} className="py-2 flex items-center justify-between">
+                  <div>
+                    <div className="font-medium text-stone-900">
+                      {en.student_email}
+                    </div>
+                    <div className="text-xs text-stone-500">
+                      Status: {en.status || "invited"}
+                    </div>
+                  </div>
+                  <button
+                    type="button"
+                    onClick={() => removeMutation.mutate(en.id)}
+                    className="text-xs font-medium text-red-600 hover:text-red-700"
+                  >
+                    Remove
+                  </button>
+                </li>
+              ))}
+            </ul>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}