/**
 * ConfigManager interface and implementation for @a5c-ai/agent-mux.
 *
 * Provides unified configuration access for all supported agents.
 * Reads and writes each agent's native config through the adapter layer.
 *
 * @see 08-config-and-auth.md
 */
import type { AgentName, McpServerConfig } from './types.js';
import type { AdapterRegistry } from './adapter-registry.js';
import type { ProfileManager } from './profiles.js';
import type { AgentConfig, AgentConfigSchema } from './config-types.js';
export type { AgentConfig, AgentConfigSchema, ConfigField, ValidationResult, ConfigValidationError, ConfigValidationWarning, ModelSelection, } from './config-types.js';
import type { ModelSelection, ValidationResult } from './config-types.js';
/** Unified configuration access for all supported agents. */
export interface ConfigManager {
    /** Read the full merged configuration for an agent. */
    get(agent: AgentName): AgentConfig;
    /** Read a single field from the merged configuration. */
    getField(agent: AgentName, field: string): unknown;
    /** Write partial configuration updates to the agent's native config file. */
    set(agent: AgentName, fields: Partial<AgentConfig>): Promise<void>;
    /** Write a single field to the agent's native config file. */
    setField(agent: AgentName, field: string, value: unknown): Promise<void>;
    /** Returns the configuration schema for an agent. */
    schema(agent: AgentName): AgentConfigSchema;
    /** Validate a partial config against the agent's schema. */
    validate(agent: AgentName, config: Partial<AgentConfig>): ValidationResult;
    /** Returns all MCP server configurations from the agent's config. */
    getMcpServers(agent: AgentName): McpServerConfig[];
    /** Returns configured/default/effective model selection for an agent. */
    getModelSelection(agent: AgentName): ModelSelection;
    /** Update model/provider selection fields in the agent config. */
    setModelSelection(agent: AgentName, selection: {
        model?: string | null;
        provider?: string | null;
    }): Promise<void>;
    /** Add an MCP server to the agent's config. */
    addMcpServer(agent: AgentName, server: McpServerConfig): Promise<void>;
    /** Remove an MCP server from the agent's config by name. */
    removeMcpServer(agent: AgentName, serverName: string): Promise<void>;
    /** Invalidate cache and re-read from disk. */
    reload(agent?: AgentName): Promise<void>;
    /** Returns the ProfileManager instance. */
    profiles(): ProfileManager;
}
/**
 * Implementation of ConfigManager.
 *
 * Delegates file I/O to agent adapters. Provides caching,
 * deep merge, field-level access, and schema introspection.
 */
export declare class ConfigManagerImpl implements ConfigManager {
    private readonly _adapters;
    private readonly _profileManager;
    private readonly _cache;
    /**
     * Per-agent write serialisation. All `.set()` / `.setField()` / MCP mutation
     * calls for a given agent queue onto the same promise so concurrent callers
     * cannot interleave read-modify-write sequences. File-level atomicity is
     * additionally enforced by the adapter writing through `writeJsonAtomic`
     * from `atomic-fs.ts`, which uses a tmp+fsync+rename + advisory lockfile.
     */
    private readonly _writeQueue;
    constructor(adapters: AdapterRegistry, profileManager: ProfileManager);
    private _getAdapter;
    get(agent: AgentName): AgentConfig;
    getField(agent: AgentName, field: string): unknown;
    set(agent: AgentName, fields: Partial<AgentConfig>): Promise<void>;
    /** Serialise writes per agent so concurrent `.set()` cannot interleave. */
    private _enqueueWrite;
    setField(agent: AgentName, field: string, value: unknown): Promise<void>;
    schema(agent: AgentName): AgentConfigSchema;
    validate(_agent: AgentName, _config: Partial<AgentConfig>): ValidationResult;
    getMcpServers(agent: AgentName): McpServerConfig[];
    getModelSelection(agent: AgentName): ModelSelection;
    setModelSelection(agent: AgentName, selection: {
        model?: string | null;
        provider?: string | null;
    }): Promise<void>;
    addMcpServer(agent: AgentName, server: McpServerConfig): Promise<void>;
    removeMcpServer(agent: AgentName, serverName: string): Promise<void>;
    reload(agent?: AgentName): Promise<void>;
    profiles(): ProfileManager;
}