import { SaveSlot, SaveSlotList, SaveSlotMeta } from '@rpgjs/common';
import { RpgPlayer } from '../Player/Player';
export declare const SaveStorageToken = "SaveStorageToken";
export type SaveSlotIndex = number | "auto";
export interface SaveRequestContext {
    reason?: "manual" | "auto" | "load";
    source?: string;
}
export interface AutoSaveStrategy {
    canSave?: (player: RpgPlayer, context?: SaveRequestContext) => boolean;
    canLoad?: (player: RpgPlayer, context?: SaveRequestContext) => boolean;
    shouldAutoSave?: (player: RpgPlayer, context?: SaveRequestContext) => boolean;
    getDefaultSlot?: (player: RpgPlayer, context?: SaveRequestContext) => number | null;
}
export interface SaveStorageStrategy {
    list(player: RpgPlayer): Promise<SaveSlotList>;
    get(player: RpgPlayer, index: number): Promise<SaveSlot | null>;
    save(player: RpgPlayer, index: number, snapshot: string, meta: SaveSlotMeta): Promise<void>;
    delete?(player: RpgPlayer, index: number): Promise<void>;
}
export declare class InMemorySaveStorageStrategy implements SaveStorageStrategy {
    private slotsByPlayer;
    list(player: RpgPlayer): Promise<SaveSlotList>;
    get(player: RpgPlayer, index: number): Promise<SaveSlot | null>;
    save(player: RpgPlayer, index: number, snapshot: string, meta: SaveSlotMeta): Promise<void>;
    delete(player: RpgPlayer, index: number): Promise<void>;
    private getSlots;
    private stripSnapshots;
}
export declare const AutoSaveToken = "AutoSaveToken";
export declare function resolveSaveStorageStrategy(): SaveStorageStrategy;
export declare function resolveAutoSaveStrategy(): AutoSaveStrategy;
export declare function resolveSaveSlot(slot: SaveSlotIndex | undefined, policy: AutoSaveStrategy, player: RpgPlayer, context?: SaveRequestContext): number | null;
export declare function shouldAutoSave(player: RpgPlayer, context?: SaveRequestContext): boolean;
export declare function buildSaveSlotMeta(player: RpgPlayer, overrides?: SaveSlotMeta): SaveSlotMeta;
export declare function provideSaveStorage(strategy: SaveStorageStrategy): {
    provide: string;
    useValue: SaveStorageStrategy;
};
export declare function provideAutoSave(strategy: AutoSaveStrategy): {
    provide: string;
    useValue: AutoSaveStrategy;
};