using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using Ombi.Store.Context;
using Ombi.Store.Entities;

namespace Ombi.Store.Repository
{
    public class SettingsJsonRepository : ISettingsRepository
    {
        public SettingsJsonRepository(IOmbiContext ctx, IMemoryCache mem)
        {
            Db = ctx;
            _cache = mem;
        }

        private IOmbiContext Db { get; }
        private readonly IMemoryCache _cache;

        public GlobalSettings Insert(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            var settings = Db.Settings.Add(entity);
            Db.SaveChanges();
            return settings.Entity;
        }

        public async Task<GlobalSettings> InsertAsync(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            var settings = await Db.Settings.AddAsync(entity).ConfigureAwait(false);
            await Db.SaveChangesAsync().ConfigureAwait(false);
            return settings.Entity;
        }


        public GlobalSettings Get(string pageName)
        {
            return _cache.GetOrCreate(pageName, entry =>
            {
                entry.AbsoluteExpiration = DateTimeOffset.Now.AddHours(1);
                var entity = Db.Settings.AsNoTracking().FirstOrDefault(x => x.SettingsName == pageName);
                return entity;
            });
        }

        public async Task<GlobalSettings> GetAsync(string settingsName)
        {
            return await _cache.GetOrCreateAsync(settingsName, async entry =>
            {
                entry.AbsoluteExpiration = DateTimeOffset.Now.AddHours(1);
                var obj = await Db.Settings.AsNoTracking().FirstOrDefaultAsync(x => x.SettingsName == settingsName);
                return obj;
            });
        }

        public async Task DeleteAsync(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            Db.Settings.Remove(entity);
            await Db.SaveChangesAsync();
        }

        public async Task UpdateAsync(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            Db.Update(entity);
            await Db.SaveChangesAsync();
        }

        public void Delete(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            Db.Settings.Remove(entity);
            Db.SaveChanges();
        }

        public void Update(GlobalSettings entity)
        {
            _cache.Remove(entity.SettingsName);
            Db.SaveChanges();
        }
    }
}