using Microsoft.Extensions.Caching.Memory;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WIDESEAWCS_Core.Caches
{
    public class MemoryCacheService : ICacheService
    {
        protected IMemoryCache _cache;
        public MemoryCacheService(IMemoryCache cache)
        {
            _cache = cache;

        }

        public bool Add(string key, string value, int expireSeconds = -1, bool isSliding = false)
        {
            return AddObject(key, value, expireSeconds, isSliding);
        }

        public bool AddObject(string key, object value, int expireSeconds = -1, bool isSliding = false)
        {
            if (expireSeconds != -1)
            {
                _cache.Set(key,
                    value,
                    new MemoryCacheEntryOptions()
                    .SetSlidingExpiration(new TimeSpan(0, 0, expireSeconds))
                    );
            }
            else
            {
                _cache.Set(key, value);
            }

            return true;
        }

        public void AddOrUpdate(string key, string value, int expireSeconds = -1, bool isSliding = false)
        {
            if (!string.IsNullOrEmpty(Get(key)))
            {
                Remove(key);
                Add(key, value, expireSeconds, isSliding);
            }
            else
            {
                Add(key, value, expireSeconds, isSliding);
            }
        }

        public void Dispose()
        {
            if (_cache != null)
                _cache.Dispose();
            GC.SuppressFinalize(this);
        }

        public bool Exists(string key)
        {
            if (key == null)
            {
                throw new ArgumentNullException(nameof(key));
            }
            return _cache.Get(key) != null;
        }

        public T Get<T>(string key) where T : class
        {
            if (key == null)
            {
                throw new ArgumentNullException(nameof(key));
            }
            return _cache.Get(key) as T;
        }

        public string Get(string key)
        {
            try
            {
                return _cache.Get(key)?.ToString();
            }
            catch
            {
                return string.Empty;
            }
        }

        public bool Remove(string key)
        {
            if (key == null)
            {
                throw new ArgumentNullException(nameof(key));
            }
            _cache.Remove(key);

            return !Exists(key);
        }

        public void Remove(IEnumerable<string> keys)
        {
            if (keys == null)
            {
                throw new ArgumentNullException(nameof(keys));
            }

            keys.ToList().ForEach(item => _cache.Remove(item));
        }
    }
}