diff --git a/src/features/event/components/pure-event-action-button.tsx b/src/features/event/components/pure-event-action-button.tsx
new file mode 100644
index 000000000..d2a9a0e19
--- /dev/null
+++ b/src/features/event/components/pure-event-action-button.tsx
@@ -0,0 +1,103 @@
+import banIcon from '@tabler/icons/outline/ban.svg';
+import checkIcon from '@tabler/icons/outline/check.svg';
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import { joinEvent, leaveEvent } from 'soapbox/actions/events.ts';
+import { openModal } from 'soapbox/actions/modals.ts';
+import Button from 'soapbox/components/ui/button.tsx';
+import { Entities, EntityTypes } from 'soapbox/entity-store/entities.ts';
+import { useAppDispatch } from 'soapbox/hooks/useAppDispatch.ts';
+import { useAppSelector } from 'soapbox/hooks/useAppSelector.ts';
+
+import type { ButtonThemes } from 'soapbox/components/ui/useButtonStyles.ts';
+
+const messages = defineMessages({
+  leaveConfirm: { id: 'confirmations.leave_event.confirm', defaultMessage: 'Leave event' },
+  leaveMessage: { id: 'confirmations.leave_event.message', defaultMessage: 'If you want to rejoin the event, the request will be manually reviewed again. Are you sure you want to proceed?' },
+});
+
+interface IPureEventAction {
+  status: EntityTypes[Entities.STATUSES];
+  theme?: ButtonThemes;
+}
+
+const PureEventActionButton: React.FC<IPureEventAction> = ({ status, theme = 'secondary' }) => {
+  const intl = useIntl();
+  const dispatch = useAppDispatch();
+
+  const me = useAppSelector((state) => state.me);
+
+  const event = status.event!;
+
+  const handleJoin: React.EventHandler<React.MouseEvent> = (e) => {
+    e.preventDefault();
+
+    if (event.join_mode === 'free') {
+      dispatch(joinEvent(status.id));
+    } else {
+      dispatch(openModal('JOIN_EVENT', {
+        statusId: status.id,
+      }));
+    }
+  };
+
+  const handleLeave: React.EventHandler<React.MouseEvent> = (e) => {
+    e.preventDefault();
+
+    if (event.join_mode === 'restricted') {
+      dispatch(openModal('CONFIRM', {
+        message: intl.formatMessage(messages.leaveMessage),
+        confirm: intl.formatMessage(messages.leaveConfirm),
+        onConfirm: () => dispatch(leaveEvent(status.id)),
+      }));
+    } else {
+      dispatch(leaveEvent(status.id));
+    }
+  };
+
+  const handleOpenUnauthorizedModal: React.EventHandler<React.MouseEvent> = (e) => {
+    e.preventDefault();
+
+    dispatch(openModal('UNAUTHORIZED', {
+      action: 'JOIN',
+      ap_id: status.url,
+    }));
+  };
+
+  let buttonLabel;
+  let buttonIcon;
+  let buttonDisabled = false;
+  let buttonAction = handleLeave;
+
+  switch (event.join_state) {
+    case 'accept':
+      buttonLabel = <FormattedMessage id='event.join_state.accept' defaultMessage='Going' />;
+      buttonIcon = checkIcon;
+      break;
+    case 'pending':
+      buttonLabel = <FormattedMessage id='event.join_state.pending' defaultMessage='Pending' />;
+      break;
+    case 'reject':
+      buttonLabel = <FormattedMessage id='event.join_state.rejected' defaultMessage='Going' />;
+      buttonIcon = banIcon;
+      buttonDisabled = true;
+      break;
+    default:
+      buttonLabel = <FormattedMessage id='event.join_state.empty' defaultMessage='Participate' />;
+      buttonAction = me ? handleJoin : handleOpenUnauthorizedModal;
+  }
+
+  return (
+    <Button
+      size='sm'
+      theme={theme}
+      icon={buttonIcon}
+      onClick={buttonAction}
+      disabled={buttonDisabled}
+    >
+      {buttonLabel}
+    </Button>
+  );
+};
+
+export default PureEventActionButton;