import type { BaseChartProps, ChartAnimation, ChartInteractionCallbacks, ChartLegend, ChartTooltip } from '../../types/base';
export interface PieChartSliceGradientStop {
    offset: number;
    color: string;
    opacity?: number;
}
export interface PieChartSliceGradient {
    /** Gradient type (defaults to linear) */
    type?: 'linear' | 'radial';
    /** Starting point for linear gradients (0-1 relative to slice bounding box) */
    from?: {
        x: number;
        y: number;
    };
    /** Ending point for linear gradients (0-1 relative to slice bounding box) */
    to?: {
        x: number;
        y: number;
    };
    /** Gradient stops */
    stops: PieChartSliceGradientStop[];
}
export interface PieChartSliceShadow {
    /** Shadow color */
    color?: string;
    /** Horizontal offset */
    dx?: number;
    /** Vertical offset */
    dy?: number;
    /** Blur radius */
    blur?: number;
    /** Shadow opacity */
    opacity?: number;
}
export interface PieChartSliceStyle {
    /** Stroke color override */
    strokeColor?: string;
    /** Stroke width override */
    strokeWidth?: number;
    /** Stroke opacity */
    strokeOpacity?: number;
    /** Fill opacity */
    fillOpacity?: number;
    /** Rounded corner radius in pixels (best with non-zero innerRadius) */
    cornerRadius?: number;
    /** Gradient fill configuration */
    gradient?: PieChartSliceGradient;
    /** Drop shadow configuration */
    shadow?: PieChartSliceShadow;
}
export interface PieChartLabelTextStyle {
    /** Label text color */
    color?: string;
    /** Label font size */
    fontSize?: number;
    /** Label font weight */
    fontWeight?: string;
    /** Label font family */
    fontFamily?: string;
    /** Line height applied between wrapped lines */
    lineHeight?: number;
}
export interface PieChartDataPoint {
    /** Unique identifier */
    id?: string | number;
    /** Value of the slice */
    value: number;
    /** Label for the slice */
    label: string;
    /** Color of the slice */
    color?: string;
    /** Custom data for interactions */
    data?: any;
    /** Style overrides for the slice */
    style?: PieChartSliceStyle;
}
export interface PieChartLayer {
    /** Optional identifier for the layer */
    id?: string;
    /** Data points rendered in this ring */
    data: PieChartDataPoint[];
    /** Inner radius for the layer */
    innerRadius: number;
    /** Outer radius for the layer */
    outerRadius: number;
    /** Optional start angle override */
    startAngle?: number;
    /** Optional end angle override */
    endAngle?: number;
    /** Optional pad angle override */
    padAngle?: number;
}
export interface PieChartProps extends BaseChartProps, ChartInteractionCallbacks<PieChartDataPoint> {
    /** Data points */
    data: PieChartDataPoint[];
    /** Inner radius (for donut chart) */
    innerRadius?: number;
    /** Outer radius */
    outerRadius?: number;
    /** Start angle in degrees */
    startAngle?: number;
    /** End angle in degrees */
    endAngle?: number;
    /** Padding between slices */
    padAngle?: number;
    /** Show labels */
    showLabels?: boolean;
    /** Label position */
    labelPosition?: 'inside' | 'outside' | 'center';
    /** Automatically choose label placement */
    labelStrategy?: 'auto' | 'inside' | 'outside' | 'center';
    /** Minimum slice angle (deg) to keep label inside when strategy is auto */
    labelAutoSwitchAngle?: number;
    /** Automatically wrap labels that exceed width */
    wrapLabels?: boolean;
    /** Maximum characters per label line when wrapping */
    labelMaxCharsPerLine?: number;
    /** Maximum number of lines when wrapping */
    labelMaxLines?: number;
    /** Render leader lines for outside labels */
    showLeaderLines?: boolean;
    /** Leader line stroke color */
    leaderLineColor?: string;
    /** Leader line stroke width */
    leaderLineWidth?: number;
    /** Style overrides applied to rendered labels */
    labelTextStyle?: PieChartLabelTextStyle;
    /** Label formatter */
    labelFormatter?: (dataPoint: PieChartDataPoint) => string;
    /** Show values */
    showValues?: boolean;
    /** Value formatter */
    valueFormatter?: (value: number, total: number) => string;
    /** Legend configuration */
    legend?: ChartLegend;
    /** Tooltip configuration */
    tooltip?: ChartTooltip<PieChartDataPoint>;
    /** Animation configuration */
    animation?: ChartAnimation;
    /** Enable hover highlighting */
    highlightOnHover?: boolean;
    /** Callback when hover target changes */
    onSliceHover?: (slice: PieChartDataPoint | null) => void;
    /** Default style applied to slices */
    defaultSliceStyle?: PieChartSliceStyle;
    /** Additional rings rendered around the base series */
    layers?: PieChartLayer[];
    /** Allow toggling slice visibility from the legend */
    legendToggleEnabled?: boolean;
    /** Enable keyboard navigation between slices */
    keyboardNavigation?: boolean;
    /** Accessible label formatter */
    ariaLabelFormatter?: (slice: PieChartDataPoint, percentage: number) => string;
}