/**
 * LLM Configuration Service Interface.
 *
 * Domain contract for managing LLM provider configuration.
 * Configuration is persisted via PreferenceStore with env var overrides.
 *
 * Part of Phase 6A: LLM Provider Abstraction Layer.
 */
import type { LlmProvider, ILlmConfig } from './ILlmService';
/**
 * Service for reading and writing LLM configuration.
 */
export interface ILlmConfigService {
    /**
     * Get the resolved LLM configuration.
     * Merge order: defaults <- preferences <- environment variables.
     */
    getConfig(): Promise<ILlmConfig>;
    /** Set the LLM provider. */
    setProvider(provider: LlmProvider): Promise<void>;
    /** Set the model name. */
    setModel(model: string): Promise<void>;
    /** Set a custom endpoint URL. */
    setEndpoint(endpoint: string): Promise<void>;
    /** Set the API key. */
    setApiKey(apiKey: string): Promise<void>;
    /** Enable or disable LLM features. */
    setEnabled(enabled: boolean): Promise<void>;
    /** Set the default max output tokens. */
    setMaxTokens(maxTokens: number): Promise<void>;
    /** Set the default temperature. */
    setTemperature(temperature: number): Promise<void>;
    /** Reset all LLM configuration to defaults (clears stored preferences). */
    reset(): Promise<void>;
}
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