import { gql, useQuery } from '@apollo/client';
import { BookOverviewTabs } from '@app/client/components/BookOverviewTabs';
import { bookListQuery } from '@app/client/components/BookSearchList';
import { bookFragment } from '@app/client/fragments';
import { useIdentity } from '@app/client/hooks/identity';
import { useToastMutation } from '@app/client/hooks/useToastMutation';
import { Button, Input, NativeSelect, Skeleton, Stack, Textarea } from '@chakra-ui/react';
import { BookDetailsQuery, WorkingProgressStatus } from '@generated/types';
import { useNavigate } from '@tanstack/react-router';
import { createFileRoute } from '@tanstack/react-router';
import { useState } from 'react';

export const Route = createFileRoute('/work/book/$bookId/overview/details')({
  component: RouteComponent
});

function RouteComponent() {
  const { bookId: id } = Route.useParams();

  const identity = useIdentity();

  const navigate = useNavigate();

  const { data } = useQuery<BookDetailsQuery>(bookQuery, {
    variables: { id }
  });

  const { update: bookUpdate } = useToastMutation({
    mutation: bookUpdateMutation,
    successMsg: 'Book updated successfully'
  });

  const { update: bookDelete } = useToastMutation({
    mutation: bookDeleteMutation,
    successMsg: 'Book deleted successfully',
    refetchQueries: [bookListQuery]
  });

  const [title, setTitle] = useState<string | undefined>(data?.bookOne.title);
  const [description, setDescription] = useState<string | undefined>(data?.bookOne.description);

  const [progress, setProgress] = useState<WorkingProgressStatus | undefined>(
    data?.bookOne.progressStatus
  );

  if (data == null) return <Skeleton />;

  return (
    <>
      <BookOverviewTabs
        isAuthor={data.bookOne.author.id === identity?.data.id}
        bookId={id}
        currentTab="details"
      />
      <Stack justifyContent="center" alignItems="center">
        <Stack width="70%">
          <Input
            value={title}
            onChange={event => setTitle(event.currentTarget.value)}
            placeholder="title"
            maxLength={60}
          />

          <NativeSelect.Root>
            <NativeSelect.Field
              value={progress}
              onChange={event => {
                const updatedStatus = event.currentTarget.value;
                ensureProgressStatus(updatedStatus);
                setProgress(updatedStatus);
              }}
            >
              <option value={WorkingProgressStatus.InProgress}>In progress</option>
              <option value={WorkingProgressStatus.Frozen}>Frozen</option>
              <option value={WorkingProgressStatus.Complete}>Complete</option>
            </NativeSelect.Field>
            <NativeSelect.Indicator />
          </NativeSelect.Root>
          <Textarea
            value={description}
            onChange={event => setDescription(event.currentTarget.value)}
            placeholder="description"
            maxLength={500}
            autoresize
          />

          <Button
            width="100%"
            onClick={async () => {
              await bookUpdate({
                variables: {
                  input: {
                    id,
                    title,
                    description,
                    progressStatus: progress
                  }
                }
              });
            }}
          >
            Update
          </Button>

          <Button
            width="100%"
            backgroundColor="red.500"
            onClick={async () => {
              await bookDelete({ variables: { id } });
              navigate({ to: '/' });
            }}
          >
            Delete
          </Button>
        </Stack>
      </Stack>
    </>
  );
}

function ensureProgressStatus(value: string): asserts value is WorkingProgressStatus {
  if (value === WorkingProgressStatus.Complete) return;
  if (value === WorkingProgressStatus.InProgress) return;
  if (value === WorkingProgressStatus.Frozen) return;

  throw new Error('Invalid WorkingPrgoressStatus');
}

const bookQuery = gql`
  query BookDetails($id: ID!) {
    bookOne(id: $id) {
      ...Book
    }
  }
  ${bookFragment}
`;

const bookUpdateMutation = gql`
  mutation BookDetailsUpdate($input: BookUpdateInput!) {
    bookUpdate(input: $input) {
      ...Book
    }
  }
  ${bookFragment}
`;

const bookDeleteMutation = gql`
  mutation BookDetailsDelete($id: ID!) {
    bookDelete(id: $id)
  }
`;