From 9ba06704077c32f84aa4c4aeff8b75e66e1c0486 Mon Sep 17 00:00:00 2001
From: Jesse Plamondon-Willard <Pathoschild@users.noreply.github.com>
Date: Sat, 16 Apr 2022 11:21:44 -0400
Subject: fix Nexus API key needed to launch web project locally

---
 docs/release-notes.md                              |  3 +++
 .../Framework/Clients/Nexus/DisabledNexusClient.cs | 31 ++++++++++++++++++++++
 src/SMAPI.Web/Startup.cs                           | 23 ++++++++++------
 3 files changed, 49 insertions(+), 8 deletions(-)
 create mode 100644 src/SMAPI.Web/Framework/Clients/Nexus/DisabledNexusClient.cs

diff --git a/docs/release-notes.md b/docs/release-notes.md
index 01ba6e30..de30a23b 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -64,6 +64,9 @@ the C# mod that loads them is updated.
   * Fixed issue where suppressing `[Left|Right]Thumbstick[Down|Left]` keys would suppress the opposite direction instead.
   * Fixed null handling in various edge cases.
 
+### For SMAPI contributors
+* You no longer need a Nexus API key to launch the SMAPI web project locally.
+
 ## 3.13.4
 Released 16 January 2022 for Stardew Valley 1.5.6 or later.
 
diff --git a/src/SMAPI.Web/Framework/Clients/Nexus/DisabledNexusClient.cs b/src/SMAPI.Web/Framework/Clients/Nexus/DisabledNexusClient.cs
new file mode 100644
index 00000000..6edd5f64
--- /dev/null
+++ b/src/SMAPI.Web/Framework/Clients/Nexus/DisabledNexusClient.cs
@@ -0,0 +1,31 @@
+using System.Threading.Tasks;
+using StardewModdingAPI.Toolkit.Framework.UpdateData;
+
+namespace StardewModdingAPI.Web.Framework.Clients.Nexus
+{
+    /// <summary>A client for the Nexus website which does nothing, used for local development.</summary>
+    internal class DisabledNexusClient : INexusClient
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <inheritdoc />
+        public ModSiteKey SiteKey => ModSiteKey.Nexus;
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Get update check info about a mod.</summary>
+        /// <param name="id">The mod ID.</param>
+        public Task<IModPage?> GetModData(string id)
+        {
+            return Task.FromResult<IModPage?>(
+                new GenericModPage(ModSiteKey.Nexus, id).SetError(RemoteModStatus.TemporaryError, "The Nexus client is currently disabled due to the configuration.")
+            );
+        }
+
+        /// <inheritdoc />
+        public void Dispose() { }
+    }
+}
diff --git a/src/SMAPI.Web/Startup.cs b/src/SMAPI.Web/Startup.cs
index 98dbca5e..2693aa90 100644
--- a/src/SMAPI.Web/Startup.cs
+++ b/src/SMAPI.Web/Startup.cs
@@ -128,14 +128,21 @@ namespace StardewModdingAPI.Web
                     modUrlFormat: api.ModDropModPageUrl
                 ));
 
-                services.AddSingleton<INexusClient>(new NexusClient(
-                    webUserAgent: userAgent,
-                    webBaseUrl: api.NexusBaseUrl,
-                    webModUrlFormat: api.NexusModUrlFormat,
-                    webModScrapeUrlFormat: api.NexusModScrapeUrlFormat,
-                    apiAppVersion: version,
-                    apiKey: api.NexusApiKey
-                ));
+                if (!string.IsNullOrWhiteSpace(api.NexusApiKey))
+                {
+                    services.AddSingleton<INexusClient>(new NexusClient(
+                        webUserAgent: userAgent,
+                        webBaseUrl: api.NexusBaseUrl,
+                        webModUrlFormat: api.NexusModUrlFormat,
+                        webModScrapeUrlFormat: api.NexusModScrapeUrlFormat,
+                        apiAppVersion: version,
+                        apiKey: api.NexusApiKey
+                    ));
+                }
+                else
+                {
+                    services.AddSingleton<INexusClient>(new DisabledNexusClient());
+                }
 
                 services.AddSingleton<IPastebinClient>(new PastebinClient(
                     baseUrl: api.PastebinBaseUrl,
-- 
cgit