Convert to db so I don't have to parse files all the time

Services/DatabaseService.cs

@@ -0,0 +1,39 @@
+using System.IO;
+using System.IO.IsolatedStorage;
+using Dapper;
+using fxl.codes.kisekae.Entities;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Configuration;
+using Npgsql;
+
+namespace fxl.codes.kisekae.Services
+{
+    public class DatabaseService
+    {
+        private readonly string _connectionString;
+        private readonly FileParserService _fileParserService;
+        private readonly IsolatedStorageFile _storage;
+
+        public DatabaseService(IConfiguration configuration, FileParserService fileParserService)
+        {
+            _fileParserService = fileParserService;
+            _connectionString = configuration.GetConnectionString("kisekae");
+            _storage = IsolatedStorageFile.GetUserStoreForApplication();
+        }
+
+        public async void StoreToDatabase(IFormFile file)
+        {
+            await using var connection = new NpgsqlConnection(_connectionString);
+            await connection.OpenAsync();
+
+            var existing = connection.QuerySingle<Kisekae>("select * from kisekae where kisekae.filename = @Filename", file);
+            if (existing != null) return;
+
+            _fileParserService.UnzipLzh(file);
+
+            var directory = Path.GetFileNameWithoutExtension(file.FileName);
+
+            await connection.CloseAsync();
+        }
+    }
+}