import { GridRowId, GridRowModel, GridColDef, GridValueFormatter } from '@mui/x-data-grid-pro';
export interface GridAggregationState {
    model: GridAggregationModel;
    lookup: GridAggregationLookup;
}
export interface GridAggregationInitialState {
    model?: GridAggregationModel;
}
export interface GridAggregationInternalCache {
    rulesOnLastColumnHydration: GridAggregationRules;
    rulesOnLastRowHydration: GridAggregationRules;
}
export interface GridAggregationApi {
    /**
     * Sets the aggregation model to the one given by `model`.
     * @param {GridAggregationModel} model The aggregation model.
     */
    setAggregationModel: (model: GridAggregationModel) => void;
}
export interface GridAggregationGetCellValueParams {
    /**
     * The row model of the row that the current cell belongs to.
     */
    row: GridRowModel;
}
/**
 * Grid aggregation function definition interface.
 * @demos
 *   - [Aggregation functions](/x/react-data-grid/aggregation/#aggregation-functions)
 */
export interface GridAggregationFunction<V = any, AV = V> {
    /**
     * Function that takes the current cell values and generates the aggregated value.
     * @template V, AV
     * @param {GridAggregationParams<V>} params The params of the current aggregated cell.
     * @returns {AV} The aggregated value.
     */
    apply: (params: GridAggregationParams<V>) => AV | null | undefined;
    /**
     * Label of the aggregation function.
     * Will be used to add a label on the footer of the grouping column when this aggregation function is the only one being used.
     * @default apiRef.current.getLocaleText('aggregationFunctionLabel{capitalize(name)})
     */
    label?: string;
    /**
     * Column types supported by this aggregation function.
     * If not defined, all types are supported (in most cases this property should be defined).
     */
    columnTypes?: string[];
    /**
     * Function that allows to apply a formatter to the aggregated value.
     * If not defined, the grid will use the formatter of the column.
     */
    valueFormatter?: GridValueFormatter;
    /**
     * Indicates if the aggregated value have the same unit as the cells used to generate it.
     * It can be used to apply a custom cell renderer only if the aggregated value has the same unit.
     * @default true
     */
    hasCellUnit?: boolean;
    /**
     * Function that allows to transform the value of the cell passed to the aggregation function applier.
     * Useful for aggregating data from multiple row fields.
     * @demo https://mui.com/x/react-data-grid/aggregation/#aggregating-data-from-multiple-row-fields
     * @param {GridAggregationGetCellValueParams} params The params of the current cell
     * @returns {V} The value of the cell that will be passed to the aggregation `apply` function
     */
    getCellValue?: (params: GridAggregationGetCellValueParams) => V;
}
interface GridAggregationParams<V = any> {
    values: (V | undefined)[];
    groupId: GridRowId;
    field: GridColDef['field'];
}
export type GridAggregationModel = {
    [field: string]: string;
};
export type GridAggregationLookup = {
    [rowId: GridRowId]: {
        [field: string]: {
            position: GridAggregationPosition;
            value: any;
        };
    };
};
export type GridAggregationPosition = 'inline' | 'footer';
export interface GridAggregationCellMeta {
    /**
     * If `true`, the current aggregated value has the same unit as the value of the other cells of this row.
     * For instance, "min" / "max" aggregation have the same unit as the other cells.
     * If `false`, the current aggregated value has another unit or not unit.
     * For instance, "size" aggregation has no unit.
     */
    hasCellUnit: boolean;
    /**
     * Name of the aggregation function currently applied on this cell.
     */
    aggregationFunctionName: string;
}
export interface GridAggregationHeaderMeta {
    aggregationRule: GridAggregationRule;
}
export interface GridAggregationRule {
    aggregationFunctionName: string;
    aggregationFunction: GridAggregationFunction;
}
/**
 * Object containing all the aggregation rules that must be applied to the current columns.
 * Unlike the aggregation model, those rules are sanitized and do not contain:
 * - items for non-existing columns
 * - items for non-aggregable columns (GridColDef.aggregable = false)
 * - items for non-existing aggregation function
 * - items for non-available aggregation function on the column (GridColDef.availableAggregationFunctions)
 */
export type GridAggregationRules = {
    [field: string]: GridAggregationRule;
};
export {};