using AS1024.GeoFeed.Core.Interfaces;
using AS1024.GeoFeed.Models;
using AS1024.GeoFeed.Core.Tools;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;

namespace AS1024.GeoFeed.Core.CacheService
{
    public class GeoFeedLocalFileCache : IGeoFeedPersistentCacheProvider
    {
        private readonly IConfiguration configuration;
        private readonly ILogger<GeoFeedLocalFileCache> logger;

        public GeoFeedLocalFileCache(IConfiguration _configuration,
            ILogger<GeoFeedLocalFileCache> logger)
        {
            configuration = _configuration;
            this.logger = logger;
        }

        string IGeoFeedPersistentCacheProvider.ProviderName => "file";

        Task<bool> IGeoFeedPersistentCacheProvider.CacheGeoFeed(IList<IPGeoFeed> pGeoFeeds)
        {
            string? tempPath = GetTempPath();
            logger.LogInformation($"Writing geofeed data to: {tempPath}");
            File.WriteAllText(tempPath, pGeoFeeds.ToList().
                ToGeoFeedCsv());

            return Task.FromResult(true);
        }

        private string GetTempPath()
        {
            string? tempPath = Path.Combine(Path.GetTempPath(), "geoFeedCache.csv");

            logger.LogInformation($"Getting GeoFeed data from: {tempPath}");

            if (!string.IsNullOrEmpty(configuration["TempCache"]))
                tempPath = configuration["TempCache"];
            return tempPath;
        }

        string IGeoFeedPersistentCacheProvider.GetGeoFeed()
        {
            return File.ReadAllText(GetTempPath());
        }
    }
}