From 93892c91e72f0cdfcbc20d1fc53666aecf59710f Mon Sep 17 00:00:00 2001
From: jberg <jordannealberg@gmail.com>
Date: Thu, 4 Oct 2018 17:24:47 -0700
Subject: [PATCH] handle specific error types when fetching presets

---
 js/components/MilkdropWindow/index.js | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/js/components/MilkdropWindow/index.js b/js/components/MilkdropWindow/index.js
index 8b4acfc8..c3a48b66 100644
--- a/js/components/MilkdropWindow/index.js
+++ b/js/components/MilkdropWindow/index.js
@@ -158,6 +158,7 @@ function presetNameFromURL(url) {
     return decodeURIComponent(presetName);
   } catch (e) {
     // if something goes wrong parsing url, just use url as the preset name
+    console.error(e);
     return url;
   }
 }
@@ -182,7 +183,15 @@ async function loadInitialPreset() {
       return { [presetName]: responseBody };
     } catch (e) {
       console.error(e);
-      alert(`Failed to load MilkDrop preset from ${presetUrl}`);
+
+      if (e instanceof TypeError) {
+        // handle URL not existing
+        alert(`Failed to load MilkDrop preset from ${milkdropPresetUrl}`);
+      } else if (e instanceof Error) {
+        // handle URL bad response
+        alert(`Unable to load MilkDrop preset from ${milkdropPresetUrl}`);
+      }
+
       return null;
     }
   } else if (milkdropPresetUrl) {
@@ -196,7 +205,15 @@ async function loadInitialPreset() {
       return { [presetName]: { file: fileBlob } };
     } catch (e) {
       console.error(e);
-      alert(`Failed to load MilkDrop preset from ${milkdropPresetUrl}`);
+
+      if (e instanceof TypeError) {
+        // handle URL not existing
+        alert(`Failed to load MilkDrop preset from ${milkdropPresetUrl}`);
+      } else if (e instanceof Error) {
+        // handle URL bad response
+        alert(`Unable to load MilkDrop preset from ${milkdropPresetUrl}`);
+      }
+
       return null;
     }
   }