/**
 * module: ledger —— 本模块要外界提供的能力(编码规范 §10.1 / §5.3)。
 */
import type { EnvelopeDraft, LedgerKey, LedgerQuery, LedgerRow } from '@contracts';
import type { MaterializedObject, SchemaChange } from './internal/domain/schema-merge.ts';
import type { DraftEntry } from './internal/domain/task-view.ts';
export type Clock = {
    now(): Date;
};
export type IdGenerator = {
    next(): string;
};
/** 数据事件的发射口 —— app 注入 `event` 模块的出口(§5.2) */
export type EventPublisher = {
    publish(envelope: EnvelopeDraft): Promise<void>;
};
export type ObjectRef = {
    readonly domain: string;
    readonly object: string;
};
/**
 * 台账存储 —— 运行时 DDL / DML 由声明生成,ORM 静态 schema 不适用,
 * 一律 node-postgres 直写(§1 / ADR-002)。
 */
export type LedgerStore = {
    /** 已物化对象的列与主键;未物化返回 undefined */
    describe(ref: ObjectRef): Promise<MaterializedObject | undefined>;
    listObjects(): Promise<ObjectRef[]>;
    /** 执行「只增不破坏」的变更计划 */
    applyChanges(ref: ObjectRef, changes: readonly SchemaChange[]): Promise<void>;
    select(query: LedgerQuery): Promise<{
        rows: LedgerRow[];
        total: number;
    }>;
    selectByKeys(ref: ObjectRef, keys: readonly LedgerKey[]): Promise<LedgerRow[]>;
    upsert(ref: ObjectRef, key: LedgerKey, values: LedgerRow): Promise<void>;
    deleteRow(ref: ObjectRef, key: LedgerKey): Promise<void>;
    /** 放行写的原子性:草稿合并与事件登记同一事务 */
    transaction<T>(fn: (store: LedgerStore, drafts: DraftStore) => Promise<T>): Promise<T>;
};
/** 任务级草稿层 —— 推荐形态 ledger.__draft;物理形态可换,功能约束不可变(§7.2) */
export type DraftStore = {
    list(taskId: string): Promise<Array<DraftEntry & ObjectRef>>;
    listForObject(taskId: string, ref: ObjectRef): Promise<DraftEntry[]>;
    put(taskId: string, ref: ObjectRef, entry: DraftEntry): Promise<void>;
    clear(taskId: string): Promise<void>;
};