From ba91a9994fd91f8da87ddc7f360e136baff804ae Mon Sep 17 00:00:00 2001
From: jvyden <jvyden@jvyden.xyz>
Date: Sat, 11 Dec 2021 21:09:27 -0500
Subject: [PATCH] Add better pagination to photos page

---
 ProjectLighthouse/Pages/PhotosPage.cshtml    | 6 +++++-
 ProjectLighthouse/Pages/PhotosPage.cshtml.cs | 9 +++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/ProjectLighthouse/Pages/PhotosPage.cshtml b/ProjectLighthouse/Pages/PhotosPage.cshtml
index e579cbc3..86e16661 100644
--- a/ProjectLighthouse/Pages/PhotosPage.cshtml
+++ b/ProjectLighthouse/Pages/PhotosPage.cshtml
@@ -20,4 +20,8 @@
 {
     <a href="/photos/@(Model.PageNumber - 1)">Previous Page</a>
 }
-<a href="/photos/@(Model.PageNumber + 1)">Next Page</a>
\ No newline at end of file
+@(Model.PageNumber + 1) / @(Model.PageAmount)
+@if (Model.PageNumber < Model.PageAmount - 1)
+{
+    <a href="/photos/@(Model.PageNumber + 1)">Next Page</a>
+}
\ No newline at end of file
diff --git a/ProjectLighthouse/Pages/PhotosPage.cshtml.cs b/ProjectLighthouse/Pages/PhotosPage.cshtml.cs
index d243f2f6..f5e132b0 100644
--- a/ProjectLighthouse/Pages/PhotosPage.cshtml.cs
+++ b/ProjectLighthouse/Pages/PhotosPage.cshtml.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
@@ -18,6 +19,8 @@ namespace LBPUnion.ProjectLighthouse.Pages
 
         public int PhotoCount;
 
+        public int PageAmount;
+
         public List<Photo> Photos;
         public PhotosPage([NotNull] Database database) : base(database)
         {}
@@ -27,6 +30,12 @@ namespace LBPUnion.ProjectLighthouse.Pages
             this.PhotoCount = await StatisticsHelper.PhotoCount();
 
             this.PageNumber = pageNumber;
+            this.PageAmount = (int)Math.Ceiling((double)this.PhotoCount / ServerStatics.PageSize);
+
+            if (this.PageNumber < 0 || this.PageNumber >= this.PageAmount)
+            {
+                return this.Redirect($"/photos/{Math.Clamp(this.PageNumber, 0, this.PageAmount - 1)}");
+            }
 
             this.Photos = await this.Database.Photos.Include
                     (p => p.Creator)