import { DocMetadata } from './core.js';
import { PartialDeep } from './utils/PartialDeep.js';
/**
 * Can be used to modify docs that come in from 'stream' or 'fetch' actions, before they are added to your store data. When returning `undefined` they will be discarded & won't be added to the store data.
 */
export type OnAddedFn<DocDataType extends {
    [key: string]: any;
} = {
    [key: string]: any;
}> = (docData: PartialDeep<DocDataType>, docMetadata: DocMetadata) => DocDataType | undefined;
/**
 * Is triggered only while a 'stream' is open, and can modify docs that were modified on another client, before they are updated to the store data. When returning `undefined` they will be discarded & the modifications won't be applied to the store data.
 */
export type OnModifiedFn<DocDataType extends {
    [key: string]: any;
} = {
    [key: string]: any;
}> = (docData: PartialDeep<DocDataType>, docMetadata: DocMetadata) => PartialDeep<DocDataType> | undefined;
/**
 * Is triggered only while a 'stream' is open, every time a document is either 'deleted' on another client OR if a document doesn't adhere to the clauses of that 'stream' anymore. When returning `undefined` they will not be removed from the store data.
 */
export type OnRemovedFn = (docData: {
    [key: string]: any;
} | string | undefined, docMetadata: DocMetadata) => {
    [key: string]: any;
} | string | undefined;
/**
 * These functions will be executed everytime BEFORE documents are added/modified/deleted in your cache data store. The function defined will receive the payload with changes from the server. You can then modify and return this payload.
 */
export type ModifyReadResponseFnMap<DocDataType extends {
    [key: string]: any;
} = {
    [key: string]: any;
}> = {
    /**
     * Can be used to modify docs that come in from 'stream' or 'fetch' actions, before they are added to your store data. When returning `undefined` they will be discarded & won't be added to the store data.
     */
    added?: OnAddedFn<DocDataType>;
    /**
     * Is triggered only while a 'stream' is open, and can modify docs that were modified on another client, before they are updated to the store data. When returning `undefined` they will be discarded & the modifications won't be applied to the store data.
     */
    modified?: OnModifiedFn<DocDataType>;
    /**
     * Is triggered only while a 'stream' is open, every time a document is either 'deleted' on another client OR if a document doesn't adhere to the clauses of that 'stream' anymore. When returning `undefined` they will not be removed from the store data.
     */
    removed?: OnRemovedFn;
};
/**
 * These functions will be executed everytime BEFORE documents are added/modified/deleted in your cache data store. The function defined will receive the payload with changes from the server. You can then modify and return this payload.
 */
export type ModifyReadResponseFnsMap = {
    added: OnAddedFn[];
    modified: OnModifiedFn[];
    removed: OnRemovedFn[];
};