scheduling fixes (#451)

* scheduling fixes

* restore plex service

* restore plex service part 2

ErsatzTV.Infrastructure/Migrations/20211024113804_Fix_ProgramScheduleItemMidnightStartTime.cs

@@ -0,0 +1,38 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace ErsatzTV.Infrastructure.Migrations
+{
+    public partial class Fix_ProgramScheduleItemMidnightStartTime : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql(
+                "update ProgramScheduleItem set StartTime = '00:00:00' where StartTime = '1.00:00:00'");
+
+            migrationBuilder.Sql(
+@"delete from PlayoutItem where PlayoutId in
+(select Playout.Id from Playout
+inner join ProgramSchedule PS on Playout.ProgramScheduleId = PS.Id
+inner join ProgramScheduleItem PSI on PSI.ProgramScheduleId = PS.Id
+where PSI.StartTime = '00:00:00')");
+
+            migrationBuilder.Sql(
+                @"delete from PlayoutProgramScheduleAnchor where PlayoutId in
+(select Playout.Id from Playout
+inner join ProgramSchedule PS on Playout.ProgramScheduleId = PS.Id
+inner join ProgramScheduleItem PSI on PSI.ProgramScheduleId = PS.Id
+where PSI.StartTime = '00:00:00')");
+
+            migrationBuilder.Sql(
+                @"UPDATE Playout SET Anchor_NextStart = null, Anchor_NextScheduleItemId = null where Id in
+(select Playout.Id from Playout
+inner join ProgramSchedule PS on Playout.ProgramScheduleId = PS.Id
+inner join ProgramScheduleItem PSI on PSI.ProgramScheduleId = PS.Id
+where PSI.StartTime = '00:00:00')");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+        }
+    }
+}