import type { DatabaseAdapter } from '../db-manager.js';
import { type ImmediateTransactionAdapter } from './sqlite-transaction.js';
export type CaseLinkType = 'related' | 'supersedes-case' | 'subcase-of' | 'blocked-by' | 'duplicate-of';
export type CaseLinkSourceKind = 'manual' | 'wiki_compiler' | 'hitl_correction' | 'system_backfill';
export interface CaseLinkRecord {
    link_id: string;
    case_id_from: string;
    case_id_to: string;
    link_type: CaseLinkType;
    created_at: string;
    created_by: string;
    confidence: number | null;
    reason_json: string | null;
    source_kind: CaseLinkSourceKind;
    source_ref: string | null;
    source_ref_fingerprint: Buffer | null;
    source_ref_fingerprint_hex: string | null;
    revoked_at: string | null;
    revoked_by: string | null;
    revoke_reason: string | null;
}
export interface CaseLinkCreateInput {
    link_id?: string;
    case_id_from: string;
    case_id_to: string;
    link_type: CaseLinkType;
    created_by: string;
    confidence?: number | null;
    reason_json?: string | Record<string, unknown> | null;
    source_kind?: CaseLinkSourceKind;
    source_ref?: string | null;
    source_ref_fingerprint?: Buffer | Uint8Array | null;
    unsuppress_wiki_tombstone?: boolean;
    expected_current_value_json?: string | null;
    reconfirm_token?: string | null;
    session_id?: string | null;
    now?: string;
}
export interface CaseLinkRevokeInput {
    link_id: string;
    revoked_by: string;
    revoke_reason: string;
    expected_current_value_json?: string | null;
    reconfirm_token?: string | null;
    session_id?: string | null;
    now?: string;
}
export interface CaseLinkRequiresReconfirmResult {
    kind: 'requires_reconfirm';
    code: 'case.correction_requires_reconfirm';
    case_id: string;
    target_kind: 'case_link';
    target_ref_json: string;
    current_value_json: string;
    old_value_json: string | null;
    proposed_new_value_json: string;
    reconfirm_token: string;
    reconfirm_token_expires_at: string;
    message: string;
}
export type CaseLinkCreateResult = {
    kind: 'created';
    link_id: string;
    source_ref_fingerprint_hex: string;
} | CaseLinkRequiresReconfirmResult | {
    kind: 'rejected';
    code: 'case.precompile_gap' | 'case.terminal_status' | 'case.self_link' | 'case.wiki_tombstone_conflict' | 'case.correction_active_conflict' | 'case.reconfirm_token_replayed';
    message: string;
    case_id?: string;
};
export type CaseLinkRevokeResult = {
    kind: 'revoked';
    link_id: string;
} | CaseLinkRequiresReconfirmResult | {
    kind: 'rejected';
    code: 'case.case_link_not_found' | 'case.wiki_tombstone_fingerprint_missing' | 'case.reconfirm_token_replayed';
    message: string;
    link_id?: string;
};
export interface ListActiveCaseLinksResult {
    terminal_case_id: string;
    resolved_via_case_id: string | null;
    chain: string[];
    links: CaseLinkRecord[];
}
export interface BackfillStructuralLinksResult {
    duplicate_of_inserted: number;
    subcase_of_inserted: number;
}
type CaseLinkAdapter = Pick<DatabaseAdapter, 'prepare' | 'transaction'> & Partial<Pick<ImmediateTransactionAdapter, 'exec'>>;
export declare function sha256TombstoneFingerprint(input: {
    source_case_id: string;
    target_case_id: string;
    link_type: CaseLinkType;
}): Buffer;
export declare function createCaseLink(adapter: DatabaseAdapter, input: CaseLinkCreateInput): CaseLinkCreateResult;
export declare function revokeCaseLink(adapter: DatabaseAdapter, input: CaseLinkRevokeInput): CaseLinkRevokeResult;
export declare function listActiveCaseLinks(adapter: DatabaseAdapter, caseId: string): ListActiveCaseLinksResult;
export declare function isWikiTombstoneActive(adapter: DatabaseAdapter | CaseLinkAdapter, input: {
    source_case_id: string;
    target_case_id: string;
    link_type: CaseLinkType;
}): boolean;
export declare function unsuppressWikiTombstone(adapter: DatabaseAdapter, input: {
    source_case_id: string;
    target_case_id: string;
    link_type: CaseLinkType;
    unsuppressed_by: string;
    now?: string;
}): {
    kind: 'unsuppressed';
    unsuppressed_count: number;
};
export declare function backfillStructuralLinks(adapter: DatabaseAdapter): BackfillStructuralLinksResult;
export {};
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