/**
 * Channel Adapter — Unified interface for all messaging platforms.
 *
 * Every platform (Telegram, Discord, Slack, WhatsApp) implements this interface.
 * Tools are platform-agnostic — they only speak ChannelAdapter.
 */
import type { MessageBuffer } from './buffer.js';
export type Platform = 'telegram' | 'discord' | 'slack' | 'whatsapp';
export type ChannelState = 'disconnected' | 'connecting' | 'connected' | 'error';
export interface ChannelMessage {
    id: string;
    platform: Platform;
    channelId: string;
    channelName?: string;
    sender: {
        id: string;
        name: string;
        isBot: boolean;
    };
    text: string;
    timestamp: number;
    threadId?: string;
    replyToId?: string;
    mediaUrl?: string;
}
export interface SendOptions {
    channelId: string;
    text: string;
    threadId?: string;
    mediaUrl?: string;
    replyToId?: string;
}
export interface SendResult {
    success: boolean;
    messageId?: string;
    error?: string;
}
export interface HistoryOptions {
    channelId: string;
    limit?: number;
    before?: number;
    threadId?: string;
}
export interface ChannelInfo {
    id: string;
    name: string;
    type: string;
}
export interface ChannelAdapter {
    readonly platform: Platform;
    state: ChannelState;
    readonly buffer: MessageBuffer;
    /** Connect to the platform (idempotent — no-op if already connected) */
    connect(): Promise<void>;
    /** Disconnect gracefully */
    disconnect(): Promise<void>;
    /** Send a message */
    send(options: SendOptions): Promise<SendResult>;
    /** Get message history from the platform API (not the buffer) */
    getHistory(options: HistoryOptions): Promise<ChannelMessage[]>;
    /** List available channels/groups/conversations */
    listChannels(): Promise<ChannelInfo[]>;
    /** Health check */
    isHealthy(): Promise<boolean>;
}
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