From e12a1d369d2cf7d2920ea836ae12778b5ab2df64 Mon Sep 17 00:00:00 2001
From: Zoe Roux <zoe.roux@zoriya.dev>
Date: Tue, 31 Oct 2023 23:51:07 +0100
Subject: [PATCH] Add a firstEpisode field on the backend

---
 .../src/Kyoo.Abstractions/Models/Resources/Show.cs | 14 ++++++++++++++
 back/src/Kyoo.Postgresql/DatabaseContext.cs        |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/back/src/Kyoo.Abstractions/Models/Resources/Show.cs b/back/src/Kyoo.Abstractions/Models/Resources/Show.cs
index 7e35c482..52b24707 100644
--- a/back/src/Kyoo.Abstractions/Models/Resources/Show.cs
+++ b/back/src/Kyoo.Abstractions/Models/Resources/Show.cs
@@ -19,6 +19,8 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using EntityFrameworkCore.Projectables;
 using Kyoo.Abstractions.Models.Attributes;
 using Kyoo.Utils;
 using Newtonsoft.Json;
@@ -142,6 +144,18 @@ namespace Kyoo.Abstractions.Models
 		/// </summary>
 		[LoadableRelation] public ICollection<Collection>? Collections { get; set; }
 
+		/// <summary>
+		/// The first episode of this show.
+		/// </summary>
+		[Projectable(UseMemberBody = nameof(_FirstEpisode), OnlyOnInclude = true)]
+		[LoadableRelation] public Episode? FirstEpisode { get; set; }
+
+		private Episode? _FirstEpisode => Episodes!
+			.OrderBy(x => x.AbsoluteNumber)
+			.ThenBy(x => x.SeasonNumber)
+			.ThenBy(x => x.EpisodeNumber)
+			.FirstOrDefault();
+
 		/// <inheritdoc />
 		public void OnMerge(object merged)
 		{
diff --git a/back/src/Kyoo.Postgresql/DatabaseContext.cs b/back/src/Kyoo.Postgresql/DatabaseContext.cs
index 996139cc..4399841d 100644
--- a/back/src/Kyoo.Postgresql/DatabaseContext.cs
+++ b/back/src/Kyoo.Postgresql/DatabaseContext.cs
@@ -253,6 +253,8 @@ namespace Kyoo.Postgresql
 		{
 			base.OnModelCreating(modelBuilder);
 
+			modelBuilder.Entity<Show>()
+				.Ignore(x => x.FirstEpisode);
 			modelBuilder.Entity<Episode>()
 				.Ignore(x => x.PreviousEpisode)
 				.Ignore(x => x.NextEpisode);