/**
 * Context Window Module
 *
 * Shared logic for building context windows around messages.
 * Used by both the classifier (for AI context) and deduplication
 * (to check if agreements fall within a suggestion's context).
 *
 * Rules:
 * - Minimum 280 chars before and 280 chars after
 * - Minimum 2 messages on each side
 * - Messages are already chunked at parse time (≤280 chars each), no truncation needed
 * - Snaps to message boundaries
 * - Messages include timestamps in WhatsApp format so AI understands time gaps
 */
import type { CandidateMessage, ContextMessage, ParsedMessage } from '../types';
export declare const MIN_CONTEXT_MESSAGES = 2;
export interface MessageContext {
    /** Context messages before target */
    readonly before: readonly ContextMessage[];
    /** Context messages after target */
    readonly after: readonly ContextMessage[];
    /** First message ID in context window (before target) */
    readonly firstMessageId: number;
    /** Last message ID in context window (after target) */
    readonly lastMessageId: number;
    /** The target message ID */
    readonly targetMessageId: number;
}
/**
 * Get context around a message.
 *
 * Rules:
 * - Minimum 280 chars before and 280 chars after
 * - Minimum 2 messages on each side
 * - Each message truncated to max 280 chars with "[truncated to 280 chars]" suffix
 * - For prior context: snap to message boundaries, then truncate
 *
 * Returns both the formatted context strings AND the message counts/IDs
 * for use in deduplication.
 */
export declare function getMessageContext(messages: readonly ParsedMessage[], index: number): MessageContext;
/**
 * Check if a message ID falls within a context window.
 */
export declare function isInContextWindow(messageId: number, ctx: MessageContext): boolean;
/**
 * Deduplicate agreement candidates that fall within a suggestion's context window.
 *
 * When an agreement (like "That looks amazing!") appears in the context window
 * of a suggestion (like "Let's do a whale safari!"), the agreement is redundant
 * because the classifier will see both in the same context. Keep only the suggestion.
 *
 * Uses the same context window logic as the classifier (280 chars / 2 messages minimum).
 */
export declare function deduplicateAgreements(candidates: readonly CandidateMessage[], messages: readonly ParsedMessage[]): {
    candidates: CandidateMessage[];
    removedCount: number;
};
//# sourceMappingURL=context-window.d.ts.map