import { ContributionProvider, Emitter, Event, ILogger, PreferenceService } from '@theia/core';
import { ChatAgent } from './chat-agents';
import { AgentService, AISettingsService } from '@theia/ai-core';
import { ParsedChatRequest } from './parsed-chat-request';
/**
 * The default chat agent to invoke
 */
export declare const DefaultChatAgentId: unique symbol;
export interface DefaultChatAgentId {
    id: string;
}
/**
 * In case no fitting chat agent is available, this one will be used (if it is itself available)
 */
export declare const FallbackChatAgentId: unique symbol;
export interface FallbackChatAgentId {
    id: string;
}
export declare const ChatAgentService: unique symbol;
export declare const ChatAgentServiceFactory: unique symbol;
/**
 * The ChatAgentService provides access to the available chat agents.
 */
export interface ChatAgentService {
    /**
     * Returns all available agents.
     * @param includeHidden whether to include agents that are hidden from chat (showInChat set to false). Defaults to false, meaning hidden agents will not be returned.
     */
    getAgents(includeHidden?: boolean): ChatAgent[];
    /**
     * Returns the specified agent, if available
     * @param id the agent id
     * @param includeHidden whether to include agents that are hidden from chat (showInChat set to false). Defaults to false, meaning hidden agents will not be returned.
     */
    getAgent(id: string, includeHidden?: boolean): ChatAgent | undefined;
    /**
     * Returns all agents, including disabled ones.
     */
    getAllAgents(): ChatAgent[];
    /**
     * Allows to register a chat agent programmatically.
     * @param agent the agent to register
     */
    registerChatAgent(agent: ChatAgent): void;
    /**
     * Allows to unregister a chat agent programmatically.
     * @param agentId the agent id to unregister
     */
    unregisterChatAgent(agentId: string): void;
    /**
     * Returns the configured default chat agent, if available and enabled.
     */
    getDefaultAgent(): ChatAgent | undefined;
    /**
     * Returns the configured fallback chat agent, if available and enabled.
     */
    getFallbackAgent(): ChatAgent | undefined;
    /**
     * Resolves the agent from a parsed request.
     * Checks for explicit @agent mention first, then preference-based default,
     * then DI-bound default, and finally falls back to the fallback agent.
     * @param parsedRequest The parsed chat request to resolve the agent from
     * @returns The resolved agent, or undefined if no agent could be determined
     */
    resolveAgent(parsedRequest: ParsedChatRequest): ChatAgent | undefined;
    /**
     * Returns the user's preference-configured default chat agent, if available and enabled.
     * This takes precedence over the DI-bound default agent.
     */
    getPreferenceDefaultAgent(): ChatAgent | undefined;
    /**
     * Returns the effective default agent by checking preference first, then DI-bound default.
     * @returns The effective default agent, or undefined if none is configured or available
     */
    getEffectiveDefaultAgent(): ChatAgent | undefined;
    /**
     * Fired when an agent is registered or unregistered.
     */
    readonly onDidChangeAgents: Event<void>;
    /**
     * Fired when the effective default agent changes (either through preference change
     * or when the configured agent becomes available/unavailable).
     */
    readonly onDefaultAgentChanged: Event<ChatAgent | undefined>;
}
export declare class ChatAgentServiceImpl implements ChatAgentService {
    protected readonly onDidChangeAgentsEmitter: Emitter<void>;
    readonly onDidChangeAgents: Event<void>;
    protected readonly onDefaultAgentChangedEmitter: Emitter<ChatAgent | undefined>;
    readonly onDefaultAgentChanged: Event<ChatAgent | undefined>;
    protected readonly agentContributions: ContributionProvider<ChatAgent>;
    protected readonly logger: ILogger;
    protected readonly agentService: AgentService;
    protected readonly preferenceService: PreferenceService | undefined;
    protected readonly defaultChatAgentId: DefaultChatAgentId | undefined;
    protected readonly fallbackChatAgentId: FallbackChatAgentId | undefined;
    protected readonly aiSettingsService: AISettingsService | undefined;
    protected _agents: ChatAgent[];
    protected hiddenFromChatAgents: Set<string>;
    protected _cachedPreferenceDefaultAgentId: string | undefined;
    protected init(): void;
    protected handleDefaultAgentPreferenceChange(): void;
    protected checkAndFireDefaultAgentChange(): void;
    protected get agents(): ChatAgent[];
    registerChatAgent(agent: ChatAgent): void;
    unregisterChatAgent(agentId: string): void;
    getAgent(id: string, includeHidden?: boolean): ChatAgent | undefined;
    getAgents(includeHidden?: boolean): ChatAgent[];
    getAllAgents(): ChatAgent[];
    private _agentIsEnabled;
    private _agentShowsInChat;
    getDefaultAgent(): ChatAgent | undefined;
    getFallbackAgent(): ChatAgent | undefined;
    getPreferenceDefaultAgent(): ChatAgent | undefined;
    getEffectiveDefaultAgent(): ChatAgent | undefined;
    resolveAgent(parsedRequest: ParsedChatRequest): ChatAgent | undefined;
}
//# sourceMappingURL=chat-agent-service.d.ts.map