import { contextStoreCurrentViewIdComponentState } from '@/context-store/states/contextStoreCurrentViewIdComponentState';
import { CoreObjectNameSingular } from '@/object-metadata/types/CoreObjectNameSingular';
import { useCreateOneRecord } from '@/object-record/hooks/useCreateOneRecord';
import { useLazyFindManyRecords } from '@/object-record/hooks/useLazyFindManyRecords';
import { currentRecordFilterGroupsComponentState } from '@/object-record/record-filter-group/states/currentRecordFilterGroupsComponentState';
import { anyFieldFilterValueComponentState } from '@/object-record/record-filter/states/anyFieldFilterValueComponentState';
import { currentRecordFiltersComponentState } from '@/object-record/record-filter/states/currentRecordFiltersComponentState';
import { useRecordIndexContextOrThrow } from '@/object-record/record-index/contexts/RecordIndexContext';
import { currentRecordSortsComponentState } from '@/object-record/record-sort/states/currentRecordSortsComponentState';
import { prefetchViewFromViewIdFamilySelector } from '@/prefetch/states/selector/prefetchViewFromViewIdFamilySelector';
import { useRecoilComponentCallbackState } from '@/ui/utilities/state/component-state/hooks/useRecoilComponentCallbackState';
import { useRecoilComponentValue } from '@/ui/utilities/state/component-state/hooks/useRecoilComponentValue';
import { getSnapshotValue } from '@/ui/utilities/state/utils/getSnapshotValue';
import { usePersistViewFieldRecords } from '@/views/hooks/internal/usePersistViewFieldRecords';
import { usePersistViewFilterGroupRecords } from '@/views/hooks/internal/usePersistViewFilterGroupRecords';
import { usePersistViewFilterRecords } from '@/views/hooks/internal/usePersistViewFilterRecords';
import { usePersistViewGroupRecords } from '@/views/hooks/internal/usePersistViewGroupRecords';
import { usePersistViewSortRecords } from '@/views/hooks/internal/usePersistViewSortRecords';
import { isPersistingViewFieldsState } from '@/views/states/isPersistingViewFieldsState';
import { type GraphQLView } from '@/views/types/GraphQLView';
import { type View } from '@/views/types/View';
import { type ViewGroup } from '@/views/types/ViewGroup';
import { type ViewSort } from '@/views/types/ViewSort';
import { ViewType } from '@/views/types/ViewType';
import { convertViewOpenRecordInToCore } from '@/views/utils/convertViewOpenRecordInToCore';
import { convertViewTypeToCore } from '@/views/utils/convertViewTypeToCore';
import { duplicateViewFiltersAndViewFilterGroups } from '@/views/utils/duplicateViewFiltersAndViewFilterGroups';
import { mapRecordFilterGroupToViewFilterGroup } from '@/views/utils/mapRecordFilterGroupToViewFilterGroup';
import { mapRecordFilterToViewFilter } from '@/views/utils/mapRecordFilterToViewFilter';
import { mapRecordSortToViewSort } from '@/views/utils/mapRecordSortToViewSort';
import { useFeatureFlagsMap } from '@/workspace/hooks/useFeatureFlagsMap';
import { useRecoilCallback } from 'recoil';
import { isDefined } from 'twenty-shared/utils';
import { v4 } from 'uuid';
import { FeatureFlagKey, useCreateCoreViewMutation } from '~/generated/graphql';
import { isUndefinedOrNull } from '~/utils/isUndefinedOrNull';

export const useCreateViewFromCurrentView = (viewBarComponentId?: string) => {
  const featureFlags = useFeatureFlagsMap();
  const isCoreViewEnabled = featureFlags[FeatureFlagKey.IS_CORE_VIEW_ENABLED];
  const [createCoreViewMutation] = useCreateCoreViewMutation();
  const currentViewIdCallbackState = useRecoilComponentCallbackState(
    contextStoreCurrentViewIdComponentState,
    viewBarComponentId,
  );

  const { createOneRecord } = useCreateOneRecord<View>({
    objectNameSingular: CoreObjectNameSingular.View,
  });

  const anyFieldFilterValue = useRecoilComponentValue(
    anyFieldFilterValueComponentState,
  );

  const { createViewFieldRecords } = usePersistViewFieldRecords();

  const { createViewSortRecords } = usePersistViewSortRecords();

  const { createViewGroupRecords } = usePersistViewGroupRecords();

  const { createViewFilterRecords } = usePersistViewFilterRecords();

  const { createViewFilterGroupRecords } = usePersistViewFilterGroupRecords();

  const { objectMetadataItem } = useRecordIndexContextOrThrow();

  const { findManyRecordsLazy } = useLazyFindManyRecords({
    objectNameSingular: CoreObjectNameSingular.View,
    fetchPolicy: 'network-only',
  });

  const currentRecordFilterGroups = useRecoilComponentValue(
    currentRecordFilterGroupsComponentState,
  );

  const currentRecordSorts = useRecoilComponentValue(
    currentRecordSortsComponentState,
  );

  const currentRecordFilters = useRecoilComponentValue(
    currentRecordFiltersComponentState,
  );

  const createViewFromCurrentView = useRecoilCallback(
    ({ snapshot, set }) =>
      async (
        {
          id,
          name,
          icon,
          kanbanFieldMetadataId,
          type,
        }: Partial<
          Pick<
            GraphQLView,
            'id' | 'name' | 'icon' | 'kanbanFieldMetadataId' | 'type'
          >
        >,
        shouldCopyFiltersAndSortsAndAggregate?: boolean,
      ): Promise<string | undefined> => {
        const currentViewId = getSnapshotValue(
          snapshot,
          currentViewIdCallbackState,
        );

        if (!isDefined(currentViewId)) {
          return undefined;
        }

        const sourceView = snapshot
          .getLoadable(
            prefetchViewFromViewIdFamilySelector({
              viewId: currentViewId,
            }),
          )
          .getValue();

        if (!isDefined(sourceView)) {
          return undefined;
        }

        set(isPersistingViewFieldsState, true);

        let newViewId: string | undefined;

        if (isCoreViewEnabled) {
          const result = await createCoreViewMutation({
            variables: {
              input: {
                name: name ?? sourceView.name,
                icon: icon ?? sourceView.icon,
                key: null,
                kanbanAggregateOperation: shouldCopyFiltersAndSortsAndAggregate
                  ? sourceView.kanbanAggregateOperation
                  : undefined,
                kanbanAggregateOperationFieldMetadataId:
                  shouldCopyFiltersAndSortsAndAggregate
                    ? sourceView.kanbanAggregateOperationFieldMetadataId
                    : undefined,
                type: convertViewTypeToCore(type ?? sourceView.type),
                objectMetadataId: sourceView.objectMetadataId,
                openRecordIn: convertViewOpenRecordInToCore(
                  sourceView.openRecordIn,
                ),
                anyFieldFilterValue: anyFieldFilterValue,
              },
            },
          });
          newViewId = result.data?.createCoreView?.id ?? undefined;
        } else {
          const createdView = await createOneRecord({
            id: id ?? v4(),
            name: name ?? sourceView.name,
            icon: icon ?? sourceView.icon,
            key: null,
            kanbanFieldMetadataId:
              kanbanFieldMetadataId ?? sourceView.kanbanFieldMetadataId,
            kanbanAggregateOperation: shouldCopyFiltersAndSortsAndAggregate
              ? sourceView.kanbanAggregateOperation
              : undefined,
            kanbanAggregateOperationFieldMetadataId:
              shouldCopyFiltersAndSortsAndAggregate
                ? sourceView.kanbanAggregateOperationFieldMetadataId
                : undefined,
            type: type ?? sourceView.type,
            objectMetadataId: sourceView.objectMetadataId,
            openRecordIn: sourceView.openRecordIn,
            anyFieldFilterValue: anyFieldFilterValue,
          });
          newViewId = createdView.id;
        }

        if (isUndefinedOrNull(newViewId)) {
          throw new Error('Failed to create view');
        }

        await createViewFieldRecords(sourceView.viewFields, { id: newViewId });

        if (type === ViewType.Kanban) {
          if (!isDefined(kanbanFieldMetadataId)) {
            throw new Error('Kanban view must have a kanban field');
          }

          const viewGroupsToCreate =
            objectMetadataItem.fields
              ?.find((field) => field.id === kanbanFieldMetadataId)
              ?.options?.map(
                (option, index) =>
                  ({
                    id: v4(),
                    __typename: 'ViewGroup',
                    fieldMetadataId: kanbanFieldMetadataId,
                    fieldValue: option.value,
                    isVisible: true,
                    position: index,
                  }) satisfies ViewGroup,
              ) ?? [];

          viewGroupsToCreate.push({
            __typename: 'ViewGroup',
            id: v4(),
            fieldValue: '',
            position: viewGroupsToCreate.length,
            isVisible: true,
            fieldMetadataId: kanbanFieldMetadataId,
          } satisfies ViewGroup);

          await createViewGroupRecords({
            viewGroupsToCreate,
            viewId: newViewId,
          });
        }

        if (shouldCopyFiltersAndSortsAndAggregate === true) {
          const viewFilterGroupsToCopy = currentRecordFilterGroups.map(
            (recordFilterGroup) =>
              mapRecordFilterGroupToViewFilterGroup({
                recordFilterGroup,
                view: { id: newViewId },
              }),
          );

          const viewFiltersToCopy = currentRecordFilters.map(
            mapRecordFilterToViewFilter,
          );

          const {
            duplicatedViewFilterGroups: viewFilterGroupsToCreate,
            duplicatedViewFilters: viewFiltersToCreate,
          } = duplicateViewFiltersAndViewFilterGroups({
            viewFilterGroupsToDuplicate: viewFilterGroupsToCopy,
            viewFiltersToDuplicate: viewFiltersToCopy,
          });

          const viewSortsToCreate = currentRecordSorts
            .map(mapRecordSortToViewSort)
            .map(
              (viewSort) =>
                ({
                  ...viewSort,
                  id: v4(),
                }) satisfies ViewSort,
            );

          await createViewFilterGroupRecords(viewFilterGroupsToCreate, {
            id: newViewId,
          });
          await createViewFilterRecords(viewFiltersToCreate, { id: newViewId });
          await createViewSortRecords(viewSortsToCreate, { id: newViewId });
        }

        await findManyRecordsLazy();
        set(isPersistingViewFieldsState, false);
        return newViewId;
      },
    [
      anyFieldFilterValue,
      currentViewIdCallbackState,
      createOneRecord,
      createViewFieldRecords,
      findManyRecordsLazy,
      objectMetadataItem.fields,
      createViewGroupRecords,
      createViewSortRecords,
      createViewFilterRecords,
      createViewFilterGroupRecords,
      currentRecordFilters,
      currentRecordSorts,
      currentRecordFilterGroups,
      isCoreViewEnabled,
      createCoreViewMutation,
    ],
  );

  return { createViewFromCurrentView };
};