Add shared Show primitive

- move the conditional rendering helper into components/primitives
- use it in the issues board and issue domain host
- keep the issue page and host easier to scan without repeated null branches

webui/src/components/primitives/index.ts

@@ -0,0 +1 @@
+export { Show } from './show';

webui/src/components/primitives/show.test.tsx

@@ -0,0 +1,33 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, it } from 'vitest';
+
+import { Show } from './show';
+
+describe('Show', () => {
+  it('renders children when the condition is true', () => {
+    render(
+      <Show when={true}>
+        <span>Visible</span>
+      </Show>,
+    );
+
+    expect(screen.getByText('Visible')).toBeInTheDocument();
+  });
+
+  it('renders fallback when the condition is false', () => {
+    render(
+      <Show fallback={<span>Hidden</span>} when={false}>
+        <span>Visible</span>
+      </Show>,
+    );
+
+    expect(screen.getByText('Hidden')).toBeInTheDocument();
+    expect(screen.queryByText('Visible')).not.toBeInTheDocument();
+  });
+
+  it('supports render-prop children', () => {
+    render(<Show when="Ada">{(name) => <span>{name}</span>}</Show>);
+
+    expect(screen.getByText('Ada')).toBeInTheDocument();
+  });
+});

webui/src/components/primitives/show.tsx

@@ -0,0 +1,23 @@
+import type { ReactNode } from 'react';
+
+type ShowChildren<T> = ReactNode | ((value: NonNullable<T>) => ReactNode);
+
+export function Show<T>({
+  fallback = null,
+  children,
+  when,
+}: {
+  children: ShowChildren<T>;
+  fallback?: ReactNode;
+  when: T;
+}) {
+  if (!when) {
+    return <>{fallback}</>;
+  }
+
+  if (typeof children === 'function') {
+    return <>{(children as (value: NonNullable<T>) => ReactNode)(when as NonNullable<T>)}</>;
+  }
+
+  return <>{children}</>;
+}

webui/src/routes/issues/-ui/issue-domain-host.tsx

@@ -14,6 +14,7 @@ import {
   TextArea,
   TextInput,
 } from '@/components/form';
+import { Show } from '@/components/primitives';
 import { useProfile } from '@/platform/shell/route-controllers';
 
 import type { IssuePriority, IssueReportPayload } from '../-issues.types';
@@ -23,6 +24,7 @@ import {
   REFRESH_EVENT,
   createDefaultIssueTitle,
   getIssueCategoriesForEntity,
+  getEntityLabel,
 } from '../-issues.helpers';
 import styles from './issue-detail-modal.module.css';
 
@@ -89,19 +91,21 @@ export function IssueDomainHost() {
     };
   }, [queryClient]);
 
-  if (!reportPayload) return null;
-
   return (
-    <ReportIssueModal
-      key={`${reportPayload.entityType}:${reportPayload.entityId}`}
-      payload={reportPayload}
-      profileId={profileId}
-      onClose={() => setReportPayload(null)}
-      onSubmitted={() => {
-        setReportPayload(null);
-        void queryClient.invalidateQueries({ queryKey: ISSUE_DOMAIN_QUERY_KEY });
-      }}
-    />
+    <Show when={reportPayload}>
+      {(payload) => (
+        <ReportIssueModal
+          key={`${payload.entityType}:${payload.entityId}`}
+          payload={payload}
+          profileId={profileId}
+          onClose={() => setReportPayload(null)}
+          onSubmitted={() => {
+            setReportPayload(null);
+            void queryClient.invalidateQueries({ queryKey: ISSUE_DOMAIN_QUERY_KEY });
+          }}
+        />
+      )}
+    </Show>
   );
 }
 
@@ -120,8 +124,6 @@ function ReportIssueModal({
     () => getIssueCategoriesForEntity(payload.entityType),
     [payload.entityType],
   );
-  const entityLabel =
-    payload.entityType === 'track' ? 'Track' : payload.entityType === 'album' ? 'Album' : 'Artist';
 
   const createMutation = useMutation({
     mutationFn: async (values: ReportIssueFormValues) => {
@@ -172,9 +174,11 @@ function ReportIssueModal({
         }
       }}
       className={styles.reportIssueDialog}
-      closeLabel="Close report issue modal"
     >
-      <DialogHeader title={`Report Issue - ${entityLabel}`} closeLabel="Close report issue modal" />
+      <DialogHeader
+        title={`Report Issue - ${getEntityLabel(payload.entityType)}`}
+        closeLabel="Close report issue modal"
+      />
       <DialogBody>
         <form
           className={styles.reportIssueForm}
@@ -186,12 +190,14 @@ function ReportIssueModal({
         >
           <div className={styles.reportIssueEntityInfo}>
             <div className={styles.reportIssueEntityName}>{payload.entityName}</div>
-            {payload.artistName ? (
-              <div className={styles.reportIssueEntityArtist}>
-                {payload.artistName}
-                {payload.albumTitle ? ` - ${payload.albumTitle}` : ''}
-              </div>
-            ) : null}
+            <Show when={payload.artistName}>
+              {(artistName) => (
+                <div className={styles.reportIssueEntityArtist}>
+                  {artistName}
+                  <Show when={payload.albumTitle}>{(albumTitle) => ` - ${albumTitle}`}</Show>
+                </div>
+              )}
+            </Show>
           </div>
 
           <FormField
@@ -228,8 +234,8 @@ function ReportIssueModal({
           </FormField>
 
           <form.Subscribe selector={(state) => state.values.category}>
-            {(selectedCategory) =>
-              selectedCategory ? (
+            {(selectedCategory) => (
+              <Show when={selectedCategory}>
                 <>
                   <form.Field name="title">
                     {(field) => (
@@ -296,8 +302,8 @@ function ReportIssueModal({
                     )}
                   </form.Field>
                 </>
-              ) : null
-            }
+              </Show>
+            )}
           </form.Subscribe>
 
           <form.Subscribe selector={(state) => state.errors}>

webui/src/routes/issues/-ui/issues-page.tsx

@@ -3,6 +3,7 @@ import { useNavigate } from '@tanstack/react-router';
 import { useEffect } from 'react';
 
 import { Select } from '@/components/form';
+import { Show } from '@/components/primitives';
 import { useProfile, useReactPageShell } from '@/platform/shell/route-controllers';
 
 import type { IssueCounts, IssueRecord, IssueStatus } from '../-issues.types';
@@ -350,27 +351,27 @@ function IssueBoardCard({
             {catMeta.icon}
           </span>
           <span className={styles.issueCardTitle}>{issue.title}</span>
-          {issue.admin_response ? (
+          <Show when={issue.admin_response}>
             <span className={styles.issueCardResponded} title="Admin has responded">
               💬
             </span>
-          ) : null}
+          </Show>
         </div>
         <div className={styles.issueCardEntity}>
           <span className={styles.issueCardEntityType}>{getEntityLabel(issue.entity_type)}</span>
           <span className={styles.issueCardEntityName}>{entityName}</span>
-          {details.length > 0 ? (
+          <Show when={details.length}>
             <span className={styles.issueCardMetaLine}>{details.join(' - ')}</span>
-          ) : null}
+          </Show>
         </div>
-        {issue.description ? (
+        <Show when={issue.description}>
           <div className={styles.issueCardDescription}>{issue.description}</div>
-        ) : null}
+        </Show>
         <div className={styles.issueCardFooter}>
           <span className={styles.issueCardDate}>{createdDate}</span>
-          {showReporterName && issue.reporter_name ? (
+          <Show when={showReporterName && issue.reporter_name}>
             <span className={styles.issueCardProfile}>by {issue.reporter_name}</span>
-          ) : null}
+          </Show>
         </div>
       </div>
       <div className={styles.issueCardRight}>