/**
 * A2UI v0.9 Protocol Types
 *
 * Zero-dependency definitions for the A2UI v0.9 Draft wire format — a
 * declarative generative-UI protocol that rides on AG-UI transport.
 *
 * @see https://a2ui.org/specification/v0.9-a2ui/
 *
 * Scope: producer-side only. These types describe the JSON messages the
 * Photon runtime emits, not the full renderer contract.
 */
export declare const A2UI_VERSION = "v0.9";
export declare const A2UI_BASIC_CATALOG = "https://a2ui.org/specification/v0_9/basic_catalog.json";
export interface A2UIPath {
    path: string;
}
export interface A2UIFunctionCall {
    call: string;
    args?: Record<string, unknown>;
}
export type DynamicString = string | A2UIPath | A2UIFunctionCall;
export type DynamicNumber = number | A2UIPath | A2UIFunctionCall;
export type DynamicBoolean = boolean | A2UIPath | A2UIFunctionCall;
export interface A2UIComponentBase {
    id: string;
    component: string;
}
export interface A2UIText extends A2UIComponentBase {
    component: 'Text';
    text: DynamicString;
    variant?: 'h1' | 'h2' | 'h3' | 'body' | 'caption';
}
export interface A2UIImage extends A2UIComponentBase {
    component: 'Image';
    url: DynamicString;
    alt?: DynamicString;
}
export interface A2UIDivider extends A2UIComponentBase {
    component: 'Divider';
}
export interface A2UIRow extends A2UIComponentBase {
    component: 'Row';
    children: string[];
}
export interface A2UIColumn extends A2UIComponentBase {
    component: 'Column';
    children: string[];
}
export interface A2UICard extends A2UIComponentBase {
    component: 'Card';
    child: string;
}
export interface A2UIListTemplate {
    template: {
        id: string;
    };
    data: A2UIPath;
}
export interface A2UIList extends A2UIComponentBase {
    component: 'List';
    list: A2UIListTemplate;
}
export interface A2UIButton extends A2UIComponentBase {
    component: 'Button';
    text: DynamicString;
    variant?: 'primary' | 'borderless';
    action?: {
        event?: {
            name: string;
            context?: Record<string, unknown>;
        };
        functionCall?: A2UIFunctionCall;
    };
}
export interface A2UITextField extends A2UIComponentBase {
    component: 'TextField';
    label?: DynamicString;
    value?: A2UIPath;
    checks?: Array<{
        call: string;
        args?: Record<string, unknown>;
        message?: string;
    }>;
}
export type A2UIComponent = A2UIText | A2UIImage | A2UIDivider | A2UIRow | A2UIColumn | A2UICard | A2UIList | A2UIButton | A2UITextField;
export interface CreateSurfaceMessage {
    version: typeof A2UI_VERSION;
    createSurface: {
        surfaceId: string;
        catalogId: string;
        theme?: {
            primaryColor?: string;
            iconUrl?: string;
            agentDisplayName?: string;
        };
        sendDataModel?: boolean;
    };
}
export interface UpdateComponentsMessage {
    version: typeof A2UI_VERSION;
    updateComponents: {
        surfaceId: string;
        components: A2UIComponent[];
    };
}
export interface UpdateDataModelMessage {
    version: typeof A2UI_VERSION;
    updateDataModel: {
        surfaceId: string;
        path: string;
        value: unknown;
    };
}
export interface DeleteSurfaceMessage {
    version: typeof A2UI_VERSION;
    deleteSurface: {
        surfaceId: string;
    };
}
export type A2UIMessage = CreateSurfaceMessage | UpdateComponentsMessage | UpdateDataModelMessage | DeleteSurfaceMessage;
export interface A2UIEscapeHatch {
    __a2ui: true;
    components: A2UIComponent[];
    data?: unknown;
    surfaceId?: string;
    theme?: CreateSurfaceMessage['createSurface']['theme'];
}
export declare function isA2UIEscapeHatch(value: unknown): value is A2UIEscapeHatch;
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