feat(extension-requests): add manager queue with quick decisions

src/app/(modules)/extension-requests/hooks/useExtensionRequestDecision.ts

@@ -0,0 +1,123 @@
+'use client';
+
+import { useCallback, useState } from 'react';
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+import { toast } from 'sonner';
+
+import { ticketService } from '@/services/api';
+import type { ReviewTicketExtensionPayload } from '@/types';
+
+import { ticketKeys } from '../../ticket/queries/ticketKeys';
+import { extensionRequestKeys } from '../queries/extensionRequestKeys';
+
+export const MAX_EXTENSION_DECISION_NOTE_LENGTH = 300;
+
+export type ExtensionRequestDecisionAction = 'approve' | 'reject';
+
+interface UseExtensionRequestDecisionOptions {
+  ticketId: string;
+  assignmentId: number;
+  onSuccess?: () => void;
+}
+
+export function useExtensionRequestDecision({
+  ticketId,
+  assignmentId,
+  onSuccess,
+}: UseExtensionRequestDecisionOptions) {
+  const queryClient = useQueryClient();
+  const [note, setNoteValue] = useState('');
+  const [noteError, setNoteError] = useState<string | null>(null);
+  const [selectedAction, setSelectedAction] =
+    useState<ExtensionRequestDecisionAction | null>(null);
+  const [isRejectConfirmationOpen, setIsRejectConfirmationOpen] =
+    useState(false);
+
+  const reviewMutation = useMutation({
+    mutationFn: (payload: ReviewTicketExtensionPayload) =>
+      ticketService.reviewTicketExtension(ticketId, assignmentId, payload),
+    onSuccess: (_response, payload) => {
+      toast.success(
+        payload.action === 'approve'
+          ? 'Extension request approved'
+          : 'Extension request rejected',
+      );
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.extensionRequest(ticketId, assignmentId),
+      });
+      queryClient.invalidateQueries({
+        queryKey: extensionRequestKeys.lists(),
+      });
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.assignments(ticketId),
+      });
+      queryClient.invalidateQueries({
+        queryKey: ticketKeys.timeline(ticketId),
+      });
+      queryClient.invalidateQueries({ queryKey: ticketKeys.lists() });
+      onSuccess?.();
+    },
+    onError: () => toast.error('Failed to review extension request'),
+  });
+
+  const setNote = useCallback((value: string) => {
+    const nextNote = value.slice(0, MAX_EXTENSION_DECISION_NOTE_LENGTH);
+    setNoteValue(nextNote);
+    if (nextNote.trim()) setNoteError(null);
+  }, []);
+
+  const submitDecision = useCallback(
+    async (action: ExtensionRequestDecisionAction) => {
+      const trimmedNote = note.trim();
+
+      if (action === 'reject' && !trimmedNote) {
+        setNoteError('Manager comments are required to reject this request.');
+        setIsRejectConfirmationOpen(false);
+        return;
+      }
+
+      setSelectedAction(action);
+      try {
+        await reviewMutation.mutateAsync({
+          action,
+          ...(trimmedNote ? { note: trimmedNote } : {}),
+        });
+      } catch {
+        // The mutation displays the error toast and leaves the form open.
+      } finally {
+        setSelectedAction(null);
+      }
+    },
+    [note, reviewMutation],
+  );
+
+  const requestRejection = useCallback(() => {
+    if (!note.trim()) {
+      setNoteError('Manager comments are required to reject this request.');
+      return;
+    }
+
+    setNoteError(null);
+    setIsRejectConfirmationOpen(true);
+  }, [note]);
+
+  const resetDecision = useCallback(() => {
+    setNoteValue('');
+    setNoteError(null);
+    setSelectedAction(null);
+    setIsRejectConfirmationOpen(false);
+  }, []);
+
+  return {
+    note,
+    setNote,
+    noteError,
+    selectedAction,
+    isPending: reviewMutation.isPending,
+    isRejectConfirmationOpen,
+    setIsRejectConfirmationOpen,
+    submitDecision,
+    requestRejection,
+    resetDecision,
+  };
+}