IDiskCache.cs

using System;
using System.Threading.Tasks;
using System.IO;

namespace FFImageLoading.Cache
{
    public interface IDiskCache
    {
        /// <summary>
        /// Adds the file to cache and file saving queue if it does not exists.
        /// </summary>
        /// <param name="key">Key to store/retrieve the file.</param>
        /// <param name="bytes">File data in bytes.</param>
        /// <param name="duration">Specifies how long an item should remain in the cache.</param>
        /// <param name="writeFinished">Action when write finishes.</param>
        Task AddToSavingQueueIfNotExistsAsync(string key, byte[] bytes, TimeSpan duration, Action writeFinished = null);

        Task<Stream> TryGetStreamAsync(string key);

        Task RemoveAsync(string key);

        Task ClearAsync();

        Task<bool> ExistsAsync(string key);

        Task<string> GetFilePathAsync(string key);
    }
}