import { SelectOption, CheckerType } from ".";
import { GenericAction } from "../actions/action";
import { AsyncContext } from "../store/AsyncRowStore";
import { SyncContext } from "../store/SyncRowStore";
import { EntityDict, OperateOption } from "../types/Entity";
import { EntityShape } from "../types/Entity";
/**
 * 优先级越小，越早执行。定义在1～99之间
 */
export declare const TRIGGER_DEFAULT_PRIORITY = 50;
export declare const TRIGGER_MIN_PRIORITY = 1;
export declare const TRIGGER_MAX_PRIORITY = 99;
export declare const DATA_CHECKER_DEFAULT_PRIORITY = 60;
export declare const CHECKER_DEFAULT_PRIORITY = 99;
interface TriggerBase<ED extends EntityDict, T extends keyof ED> {
    checkerType?: CheckerType;
    entity: T;
    name: string;
    priority?: number;
}
export interface CreateTriggerBase<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends TriggerBase<ED, T> {
    action: 'create';
    check?: (operation: ED[T]['Create']) => boolean;
    fn: (event: {
        operation: ED[T]['Create'];
    }, context: Cxt, option: OperateOption) => Promise<number> | number;
}
export interface CreateTriggerInTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends CreateTriggerBase<ED, T, Cxt> {
    when: 'before' | 'after';
}
export interface CreateTriggerCrossTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends CreateTriggerBase<ED, T, Cxt> {
    when: 'commit';
    strict?: 'takeEasy' | 'makeSure';
}
export declare type CreateTrigger<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> = CreateTriggerInTxn<ED, T, Cxt> | CreateTriggerCrossTxn<ED, T, Cxt>;
/**
 * update trigger如果带有filter，说明只对存在限定条件的行起作用。此时系统在进行相应动作时，
 * 会判定当前动作的filter条件和trigger所定义的filter是否有交集（即有同时满足两个条件的行）
 * 只要有，就会触发trigger。要注意的是这个条件是exists而不是all
 */
export interface UpdateTriggerBase<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends TriggerBase<ED, T> {
    action: Exclude<ED[T]['Action'], GenericAction> | 'update' | Array<Exclude<ED[T]['Action'], GenericAction> | 'update'>;
    attributes?: keyof ED[T]['OpSchema'] | Array<keyof ED[T]['OpSchema']>;
    check?: (operation: ED[T]['Update']) => boolean;
    fn: (event: {
        operation: ED[T]['Update'];
    }, context: Cxt, option: OperateOption) => Promise<number> | number;
    filter?: ED[T]['Update']['filter'] | ((operation: ED[T]['Update'], context: Cxt, option: OperateOption) => ED[T]['Update']['filter'] | Promise<ED[T]['Update']['filter']>);
}
export interface UpdateTriggerInTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends UpdateTriggerBase<ED, T, Cxt> {
    when: 'before' | 'after';
}
export interface UpdateTriggerCrossTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends UpdateTriggerBase<ED, T, Cxt> {
    when: 'commit';
    strict?: 'takeEasy' | 'makeSure';
}
export declare type UpdateTrigger<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> = UpdateTriggerInTxn<ED, T, Cxt> | UpdateTriggerCrossTxn<ED, T, Cxt>;
/**
 * 同update trigger一样，remove trigger如果带有filter，说明只对存在限定条件的行起作用。此时系统在进行相应动作时，
 * 会判定当前动作的filter条件和trigger所定义的filter是否有交集（即有同时满足两个条件的行）
 * 只要有，就会触发trigger。要注意的是这个条件是exists而不是all
 */
export interface RemoveTriggerBase<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends TriggerBase<ED, T> {
    action: 'remove';
    check?: (operation: ED[T]['Remove']) => boolean;
    fn: (event: {
        operation: ED[T]['Remove'];
    }, context: Cxt, option: OperateOption) => Promise<number> | number;
    filter?: ED[T]['Remove']['filter'] | ((operation: ED[T]['Remove'], context: Cxt, option: OperateOption) => ED[T]['Remove']['filter'] | Promise<ED[T]['Remove']['filter']>);
}
export interface RemoveTriggerInTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends RemoveTriggerBase<ED, T, Cxt> {
    when: 'before' | 'after';
}
export interface RemoveTriggerCrossTxn<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends RemoveTriggerBase<ED, T, Cxt> {
    when: 'commit';
    strict?: 'takeEasy' | 'makeSure';
}
export declare type RemoveTrigger<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> = RemoveTriggerInTxn<ED, T, Cxt> | RemoveTriggerCrossTxn<ED, T, Cxt>;
export interface SelectTriggerBase<ED extends EntityDict, T extends keyof ED> extends TriggerBase<ED, T> {
    action: 'select';
}
/**
 * selection似乎不需要支持跨事务？没想清楚
 * todo by Xc
 */
export interface SelectTriggerBefore<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends SelectTriggerBase<ED, T> {
    when: 'before';
    fn: (event: {
        operation: ED[T]['Selection'];
    }, context: Cxt, params?: SelectOption) => Promise<number> | number;
}
export interface SelectTriggerAfter<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> extends SelectTriggerBase<ED, T> {
    when: 'after';
    fn: (event: {
        operation: ED[T]['Selection'];
        result: Partial<ED[T]['Schema']>[];
    }, context: Cxt, params?: SelectOption) => Promise<number> | number;
}
export declare type SelectTrigger<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> = SelectTriggerBefore<ED, T, Cxt> | SelectTriggerAfter<ED, T, Cxt>;
export declare type Trigger<ED extends EntityDict, T extends keyof ED, Cxt extends AsyncContext<ED> | SyncContext<ED>> = CreateTrigger<ED, T, Cxt> | UpdateTrigger<ED, T, Cxt> | RemoveTrigger<ED, T, Cxt> | SelectTrigger<ED, T, Cxt>;
export interface TriggerEntityShape extends EntityShape {
    $$triggerData$$?: {
        name: string;
        operation: object;
    };
    $$triggerTimestamp$$?: number;
}
export {};