import { FormWidgetTheme, PartnerFormFraming, PartnerFormStyle } from "@xapp/stentor-form-widget-channel";
/**
 * The reserved preset name that forces the partner style off for a single form,
 * whatever the partner record says. A permanent per-form exception.
 */
export declare const STYLE_PRESET_NONE = "none";
export interface FormStyleContext {
    /**
     * True only for the stand-alone booking page. A form embedded on the customer's
     * own website is the customer's own chrome -- the preset must never apply there,
     * or every embedded form belonging to a styled partner would silently change
     * appearance.
     */
    readonly standalone?: boolean;
    /**
     * The form's own tri-state preset -- see FormWidgetEnv.stylePreset.
     */
    readonly stylePreset?: string;
    /**
     * Canonical code of the partner the form belongs to.
     */
    readonly partnerCode?: string;
    /**
     * The customer's own theme, which the preset merges over.
     */
    readonly customerTheme?: FormWidgetTheme;
    /**
     * Looks a named style bundle up. API-served, with a code fallback.
     */
    readonly getPresetStyle?: (preset: string) => PartnerFormStyle | undefined;
}
export interface ResolvedFormStyle {
    /**
     * The preset that applied, or undefined when the form is left alone.
     */
    readonly preset?: string;
    /**
     * The theme to hand the widget: the customer's, with the preset merged over it.
     */
    readonly theme?: FormWidgetTheme;
    /**
     * The partner chrome to draw around the form, if the preset defines any.
     */
    readonly framing?: PartnerFormFraming;
}
/**
 * Works out which named style bundle applies to a form, or undefined for none.
 *
 * `stylePreset` is tri-state and overrides the partner record either way:
 * absent inherits `formStyle.enabled`, a name forces on, "none" forces off.
 */
export declare function resolveStylePresetName(context: FormStyleContext): string | undefined;
/**
 * Resolves the preset and applies it, returning the theme the widget should use and
 * the framing it should draw.
 */
export declare function resolveFormStyle(context: FormStyleContext): ResolvedFormStyle;
/**
 * Merges a preset theme *over* a customer theme: the preset wins where it defines a
 * value, and the customer's values survive everywhere the preset is silent. Nested
 * groups (font, text, card, standAlone, ...) merge rather than replace, so a preset
 * that only sets `font.fontFamily` keeps the customer's `font.link`.
 */
export declare function mergeFormWidgetTheme(base?: FormWidgetTheme, override?: FormWidgetTheme): FormWidgetTheme | undefined;