Handle profile update errors

src/app/components/ProfileEdit.svelte

@@ -1,10 +1,12 @@
 <script lang="ts">
   import type {Profile} from "@welshman/util"
   import {getTag, makeProfile} from "@welshman/util"
-  import {pubkey, profilesByPubkey} from "@welshman/app"
+  import {pubkey, profilesByPubkey, waitForThunkError} from "@welshman/app"
   import AltArrowLeft from "@assets/icons/alt-arrow-left.svg?dataurl"
+  import {errorMessage} from "@lib/util"
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
+  import Spinner from "@lib/components/Spinner.svelte"
   import ProfileEditForm from "@app/components/ProfileEditForm.svelte"
   import {clearModals} from "@app/util/modal"
   import {pushToast} from "@app/util/toast"
@@ -17,11 +19,33 @@
 
   const back = () => history.back()
 
-  const onsubmit = ({profile, shouldBroadcast}: {profile: Profile; shouldBroadcast: boolean}) => {
-    updateProfile({profile, shouldBroadcast})
-    pushToast({message: "Your profile has been updated!"})
-    clearModals()
+  const onsubmit = async ({
+    profile,
+    shouldBroadcast,
+  }: {
+    profile: Profile
+    shouldBroadcast: boolean
+  }) => {
+    loading = true
+
+    try {
+      const error = await waitForThunkError(updateProfile({profile, shouldBroadcast}))
+
+      if (error) {
+        pushToast({
+          theme: "error",
+          message: `Failed to update your profile: ${errorMessage(error)}`,
+        })
+      } else {
+        pushToast({message: "Your profile has been updated!"})
+        clearModals()
+      }
+    } finally {
+      loading = false
+    }
   }
+
+  let loading = $state(false)
 </script>
 
 <ProfileEditForm {initialValues} {onsubmit}>
@@ -30,6 +54,9 @@
       <Icon icon={AltArrowLeft} />
       Go Back
     </Button>
-    <Button type="submit" class="btn btn-primary">Save Changes</Button>
+    <Button type="submit" class="btn btn-primary" disabled={loading}>
+      <Spinner {loading} />
+      Save Changes
+    </Button>
   {/snippet}
 </ProfileEditForm>