// Type definitions for redux-optimistic-ui 0.4.0
// Project: https://github.com/mattkrick/redux-optimistic-ui
// Definitions by: Alexey Svetliakov <https://github.com/asvetliakov>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

/// <reference path="../redux/redux.d.ts" />

declare module "redux-optimistic-ui" {
    import { Reducer } from "redux";

    /**
     * Enhanced state by redux-optimistic-ui
     */
    export interface OptimisticState<TState> {
        /**
         * History list
         * List is Immutable.List<>
         */
        history: any;
        /**
         * Before state
         */
        beforeState: TState;
        /**
         * Current state
         */
        current: TState;
    }

    /**
     * Enhances and wraps your root reducer into optimistic state
     */
    export function optimistic<TState>(reducer: Reducer<TState>): Reducer<OptimisticState<TState>>;


    /**
     * Returns your current state or state if it wasn't enhanced yet
     */
    export function ensureState<TState>(state: OptimisticState<TState> | TState): TState;

    /**
     * Optimistic action slice
     */
    export interface OptimisticAction {
        meta: {
            /**
             * Optimistic information
             */
            optimistic: {
                /**
                 * Type, BEGIN, COMMIT or REVERT
                 *
                 * @type {string}
                 */
                type: string;
                /**
                 * Transaction id. Id should be unique for each optimistic action
                 *
                 * @type {number}
                 */
                id: number;
            }
        }
    }

    /**
     * Start optimistic action
     */
    export const BEGIN: string;
    /**
     * Finish optimistic action and commit results
     */
    export const COMMIT: string;
    /**
     * Revert optimistic action
     */
    export const REVERT: string;
}