Implemented tax collection for subscriptions (#1017)

* Implemented tax collection for subscriptions

* Cleanup for Sales Tax

* Cleanup for Sales Tax

* Changes a constraint to an index for checking purposes

* Added and implemented a ReadById method for TaxRate

* Code review fixes for Tax Rate implementation

* Code review fixes for Tax Rate implementation

* Made the SalesTax migration script rerunnable

src/Core/Repositories/ITaxRateRepository.cs

@@ -0,0 +1,14 @@
+using Bit.Core.Models.Table;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Bit.Core.Repositories
+{
+    public interface ITaxRateRepository : IRepository<TaxRate, string>
+    {
+        Task<ICollection<TaxRate>> SearchAsync(int skip, int count);
+        Task<ICollection<TaxRate>> GetAllActiveAsync();
+        Task ArchiveAsync(TaxRate model);
+        Task<ICollection<TaxRate>> GetByLocationAsync(TaxRate taxRate);
+    }
+}

src/Core/Repositories/SqlServer/TaxRateRepository.cs

@@ -0,0 +1,70 @@
+using Bit.Core.Models.Table;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.SqlClient;
+using Dapper;
+using System.Linq;
+
+namespace Bit.Core.Repositories.SqlServer
+{
+    public class TaxRateRepository : Repository<TaxRate, string>, ITaxRateRepository
+    {
+        public TaxRateRepository(GlobalSettings globalSettings)
+            : this(globalSettings.SqlServer.ConnectionString, globalSettings.SqlServer.ReadOnlyConnectionString)
+        { }
+
+        public TaxRateRepository(string connectionString, string readOnlyConnectionString)
+            : base(connectionString, readOnlyConnectionString)
+        { }
+
+        public async Task<ICollection<TaxRate>> SearchAsync(int skip, int count)
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<TaxRate>(
+                    $"[{Schema}].[TaxRate_Search]",
+                    new { Skip = skip, Count = count },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.ToList();
+            }
+        }
+        
+        public async Task<ICollection<TaxRate>> GetAllActiveAsync()
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<TaxRate>(
+                    $"[{Schema}].[TaxRate_ReadAllActive]",
+                    commandType: CommandType.StoredProcedure);
+
+                return results.ToList();
+            }
+        }
+
+        public async Task ArchiveAsync(TaxRate model)
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.ExecuteAsync(
+                    $"[{Schema}].[TaxRate_Archive]",
+                    new { Id = model.Id },
+                    commandType: CommandType.StoredProcedure);
+            }
+        }
+
+        public async Task<ICollection<TaxRate>> GetByLocationAsync(TaxRate model)
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<TaxRate>(
+                    $"[{Schema}].[TaxRate_ReadByLocation]",
+                    new { Country = model.Country, PostalCode = model.PostalCode },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.ToList();
+            }
+        }
+    }
+}