using Microsoft.EntityFrameworkCore.Migrations;
using System;

#nullable disable

namespace gehGassi.Persistence.Migrations
{
    public partial class DogsWithNamesCorrection : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            var viewName = "tv_DogsWithNames";
            var sql = @"CREATE FUNCTION tv_DogsWithNames (@language nvarchar(2), @fallback nvarchar(2)) RETURNS TABLE AS RETURN 
                        SELECT dbo.Dogs.*, 
                            DR.Name AS DogRaceName,
                            CONCAT(APP.FirstName, ' ', APP.LastName) AS AppUserName
                            FROM dbo.Dogs
                            LEFT JOIN dbo.tv_DogRacesWithNames(@language, @fallback) DR ON dbo.Dogs.DogRaceId = DR.Id
	                        LEFT JOIN dbo.AppUsers APP ON dbo.Dogs.AppUserId = APP.Id";

            migrationBuilder.Sql($"IF(exists (SELECT 1  FROM sys.objects WHERE Name = '{viewName}')) BEGIN DROP FUNCTION [dbo].[{viewName}] END {Environment.NewLine} GO");
            migrationBuilder.Sql($"{sql} {Environment.NewLine} GO");
        }

        protected override void Down(MigrationBuilder migrationBuilder)
        {
            var viewName = "tv_DogsWithNames";
            var sql = @"CREATE FUNCTION tv_DogsWithNames (@language nvarchar(2), @fallback nvarchar(2)) RETURNS TABLE AS RETURN 
                        SELECT dbo.Dogs.*, 
                            DR.Name AS DogRaceName,
                            CONCAT(APP.FirstName, ' ', APP.LastName) AS AppUserName
                            FROM dbo.Dogs
                            LEFT JOIN dbo.tv_DogRacesWithNames(@language, @fallback) DR ON dbo.Dogs.DogRaceId = DR.Id
	                        LEFT JOIN dbo.AppUsers APP ON dbo.Dogs.AppUserId = APP.Id";

            migrationBuilder.Sql($"IF(exists (SELECT 1  FROM sys.objects WHERE Name = '{viewName}')) BEGIN DROP FUNCTION [dbo].[{viewName}] END {Environment.NewLine} GO");
            migrationBuilder.Sql($"{sql} {Environment.NewLine} GO");
        }
    }
}