feat: add account deletion functionality with cascade delete for work… (#33)

* feat: add account deletion functionality with cascade delete for workspace relations

* fix: add cascade delete to workspace user foreign key constraints

* fix: change onDelete action to set null for user references in schema

* feat: tweak design

---------

Co-authored-by: Henry <henry_ball@hotmail.co.uk>
Co-authored-by: Henry <30578846+hjball@users.noreply.github.com>

apps/web/src/views/settings/components/DeleteAccountConfirmation.tsx

@@ -0,0 +1,101 @@
+import { authClient } from "@kan/auth/client";
+import { useMutation } from "@tanstack/react-query";
+import { useRouter } from "next/navigation";
+import { useState } from "react";
+
+import Button from "~/components/Button";
+import { useModal } from "~/providers/modal";
+import { usePopup } from "~/providers/popup";
+import { api } from "~/utils/api";
+
+export function DeleteAccountConfirmation() {
+  const { closeModal } = useModal();
+  const { showPopup } = usePopup();
+  const router = useRouter();
+
+  const utils = api.useUtils();
+
+  const [isAcknowledgmentChecked, setIsAcknowledgmentChecked] = useState(false);
+
+  const deleteAccountMutation = useMutation({
+    mutationFn: () => authClient.deleteUser(),
+    onSuccess: async () => {
+      closeModal();
+      showPopup({
+        header: "Account deleted",
+        message: "Your account has been deleted.",
+        icon: "success",
+      });
+
+      utils.invalidate();
+      
+      router.push("/");
+    },
+    onError: () => {
+      closeModal();
+      showPopup({
+        header: "Error deleting account",
+        message: "Please try again later, or contact customer support.",
+        icon: "error",
+      });
+    },
+  });
+
+  const handleDeleteAccount = () => {
+    deleteAccountMutation.mutate();
+  };
+
+  return (
+    <div className="p-5">
+      <div className="flex w-full flex-col justify-between pb-4">
+        <h2 className="text-md pb-4 font-medium text-neutral-900 dark:text-dark-1000">
+          {`Are you sure you want to delete your account?`}
+        </h2>
+        <p className="mb-4 text-sm text-light-900 dark:text-dark-900">
+          Keep in mind that this action is irreversible.
+        </p>
+        <p className="text-sm text-light-900 dark:text-dark-900">
+          This will result in the permanent deletion of all data associated with
+          your account.
+        </p>
+      </div>
+      <div className="relative flex items-start">
+        <div className="flex h-6 items-center">
+          <input
+            id="acknowledgment"
+            name="acknowledgment"
+            type="checkbox"
+            aria-describedby="acknowledgment-description"
+            className="mt-2 h-[14px] w-[14px] rounded border-gray-300 bg-transparent text-indigo-600 focus:shadow-none focus:ring-0 focus:ring-offset-0"
+            checked={isAcknowledgmentChecked}
+            onChange={() =>
+              setIsAcknowledgmentChecked(!isAcknowledgmentChecked)
+            }
+          />
+        </div>
+        <div className="ml-3 text-sm leading-6">
+          <p
+            id="comments-description"
+            className="text-light-900 dark:text-dark-1000"
+          >
+            I acknowledge that all of my account data will be permanently
+            deleted and want to proceed.
+          </p>
+        </div>
+      </div>
+      <div className="mt-5 flex justify-end space-x-2 sm:mt-6">
+        <Button variant="secondary" onClick={() => closeModal()}>
+          Cancel
+        </Button>
+        <Button
+          variant="danger"
+          onClick={handleDeleteAccount}
+          disabled={!isAcknowledgmentChecked}
+          isLoading={deleteAccountMutation.isPending}
+        >
+          Delete account
+        </Button>
+      </div>
+    </div>
+  );
+}