From b8e9ef2f91d7224d550b3e65358f1f0a8bdde7cc Mon Sep 17 00:00:00 2001
From: William Welling <wwelling@outlook.com>
Date: Fri, 14 Jul 2023 14:17:04 -0500
Subject: [PATCH] Fix windows external resource handling

---
 .../middleware/config/WebMvcConfig.java       | 24 +++++++++++++++----
 src/main/resources/application.yml            |  3 +--
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/src/main/java/edu/tamu/scholars/middleware/config/WebMvcConfig.java b/src/main/java/edu/tamu/scholars/middleware/config/WebMvcConfig.java
index 6243b4c6b..0bb7d8a66 100644
--- a/src/main/java/edu/tamu/scholars/middleware/config/WebMvcConfig.java
+++ b/src/main/java/edu/tamu/scholars/middleware/config/WebMvcConfig.java
@@ -1,10 +1,12 @@
 package edu.tamu.scholars.middleware.config;
 
+import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.FileUrlResource;
 import org.springframework.core.io.Resource;
 import org.springframework.core.task.AsyncTaskExecutor;
 import org.springframework.lang.Nullable;
@@ -34,8 +36,12 @@ public class WebMvcConfig implements WebMvcConfigurer {
 
     @Override
     public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        String assetDir = middleware.getAssetsLocation().endsWith("/")
+            ? middleware.getAssetsLocation()
+            : String.format("%s/", middleware.getAssetsLocation());
+
         registry.addResourceHandler("/file/**")
-            .addResourceLocations(middleware.getAssetsLocation())
+            .addResourceLocations(assetDir)
             .resourceChain(true)
             .addResolver(new PathResourceResolver() {
 
@@ -44,14 +50,24 @@ public void addResourceHandlers(ResourceHandlerRegistry registry) {
                 protected Resource getResource(String resourcePath, Resource location) throws IOException {
                     String[] path = resourcePath.split("/");
 
-                    resourcePath = String.format(
-                        "a~n/%s/%s/%s",
+                    resourcePath = String.format("a~n/%s/%s/%s",
                         path[0].substring(1, 4),
                         path[0].substring(4, path[0].length()),
                         path[1]
                     );
 
-                    return super.getResource(resourcePath, location);
+                    location = super.getResource(resourcePath, location);
+
+                    if (location == null || !location.getFile().exists()) {
+                        resourcePath = String.format(
+                            "%s%s",
+                            assetDir,
+                            resourcePath
+                        );
+                        location = new FileUrlResource(resourcePath);
+                    }
+
+                    return location;
                 }
 
             });
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 4ca10876f..a117d5fd1 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -2,8 +2,7 @@ ui:
   url: http://localhost:4200
 
 middleware:
-  # must end with forward-slash
-  assets-location: classpath:/assets/
+  assets-location: classpath:/assets
   load-defaults: true
   update-defaults: true
   allowed-origins: