Function DiffProvider

src/context/diff-context/diff-provider.tsx:21–693

({
    children,
})

import type { ChartDBDiff, DiffMap } from '@/lib/domain/diff/diff';

export const DiffProvider: React.FC<React.PropsWithChildren> = ({
    children,
}) => {
    const [newDiagram, setNewDiagram] = React.useState<Diagram | null>(null);
    const [originalDiagram, setOriginalDiagram] =
        React.useState<Diagram | null>(null);
    const [diffMap, setDiffMap] = React.useState<DiffMap>(
        new Map<string, ChartDBDiff>()
    );
    const [tablesChanged, setTablesChanged] = React.useState<
        Map<string, boolean>
    >(new Map<string, boolean>());
    const [fieldsChanged, setFieldsChanged] = React.useState<
        Map<string, boolean>
    >(new Map<string, boolean>());
    const [relationshipsChanged, setRelationshipsChanged] = React.useState<
        Map<string, boolean>
    >(new Map<string, boolean>());
    const [relationshipIdMap, setRelationshipIdMap] = React.useState<
        Map<string, string>
    >(new Map<string, string>());
    const [isSummaryOnly, setIsSummaryOnly] = React.useState<boolean>(false);

    const events = useEventEmitter<DiffEvent>();

    const generateFieldsToAddMap = useCallback(
        ({
            diffMap,
            newDiagram,
        }: {
            diffMap: DiffMap;
            newDiagram: Diagram;
        }) => {
            const newFieldsMap = new Map<string, DBField[]>();

            diffMap.forEach((diff) => {
                if (diff.object === 'field' && diff.type === 'added') {
                    const field = newDiagram?.tables
                        ?.find((table) => table.id === diff.tableId)
                        ?.fields.find((f) => f.id === diff.newField.id);

                    if (field) {
                        newFieldsMap.set(diff.tableId, [
                            ...(newFieldsMap.get(diff.tableId) ?? []),
                            field,
                        ]);
                    }
                }
            });

            return newFieldsMap;
        },
        []
    );

    const findRelationshipsToAdd = useCallback(
        ({
            diffMap,