import { AbstractStreamParsingChatAgent, ChatMode, SystemMessageDescription } from '@theia/ai-chat/lib/common';
import { AIVariableContext } from '@theia/ai-core';
/**
 * An abstract chat agent that supports mode selection for selecting prompt variants.
 *
 * Agents extending this class define their available modes via `modeDefinitions`.
 * The `modes` getter dynamically computes which mode is the default based on the
 * current prompt variant settings. When a request is made with a specific `modeId`,
 * that mode's prompt variant is used instead of the settings-configured default.
 */
export declare abstract class AbstractModeAwareChatAgent extends AbstractStreamParsingChatAgent {
    /**
     * Mode definitions without the `isDefault` property.
     * Subclasses must provide their specific mode definitions.
     * Each mode's `id` should correspond to a prompt variant ID.
     */
    protected abstract readonly modeDefinitions: Omit<ChatMode, 'isDefault'>[];
    /**
     * The ID of the prompt variant set used for mode selection.
     * Defaults to `systemPromptId`. Override if a different variant set should be used.
     */
    protected get promptVariantSetId(): string | undefined;
    /**
     * Returns the available modes with `isDefault` computed based on current settings.
     */
    get modes(): ChatMode[];
    protected getSystemMessageDescription(context: AIVariableContext): Promise<SystemMessageDescription | undefined>;
    /**
     * Determines the effective variant ID, considering mode override.
     * If modeId is provided and is a valid variant for the prompt set, it takes precedence.
     * Otherwise falls back to settings-based selection.
     */
    protected getEffectiveVariantIdWithMode(modeId?: string): string | undefined;
}
//# sourceMappingURL=mode-aware-chat-agent.d.ts.map