feat(frontend): add submission performance distribution previews

frontend/src/data/performancePreview.ts

@@ -0,0 +1,104 @@
+import type { DistributionPoint } from '../lib/performance'
+import type { Submission } from './preview'
+
+interface PerformancePreview {
+  problemId: string
+  language: string
+  time: DistributionPoint[]
+  memory: DistributionPoint[]
+}
+
+// Fixed display fixtures, independent of real judge results. Memory values use KiB.
+const previews: PerformancePreview[] = [
+  {
+    problemId: '1001',
+    language: 'Rust',
+    time: [
+      { value: 0, count: 8 },
+      { value: 4, count: 12 },
+      { value: 8, count: 25 },
+      { value: 12, count: 16 },
+      { value: 16, count: 34 },
+      { value: 20, count: 46 },
+      { value: 24, count: 29 },
+      { value: 28, count: 18 },
+      { value: 32, count: 13 },
+      { value: 40, count: 9 },
+      { value: 48, count: 6 },
+      { value: 64, count: 4 },
+    ],
+    memory: [
+      { value: 1024, count: 7 },
+      { value: 1536, count: 19 },
+      { value: 2048, count: 58 },
+      { value: 2560, count: 41 },
+      { value: 3072, count: 34 },
+      { value: 3584, count: 22 },
+      { value: 4096, count: 15 },
+      { value: 5120, count: 13 },
+      { value: 6144, count: 7 },
+      { value: 8192, count: 4 },
+    ],
+  },
+  {
+    problemId: '1002',
+    language: 'Python',
+    time: [
+      { value: 24, count: 3 },
+      { value: 32, count: 8 },
+      { value: 40, count: 16 },
+      { value: 48, count: 28 },
+      { value: 56, count: 39 },
+      { value: 64, count: 31 },
+      { value: 72, count: 24 },
+      { value: 80, count: 18 },
+      { value: 96, count: 11 },
+      { value: 112, count: 6 },
+      { value: 128, count: 4 },
+    ],
+    memory: [
+      { value: 5120, count: 6 },
+      { value: 6144, count: 18 },
+      { value: 7168, count: 46 },
+      { value: 8192, count: 53 },
+      { value: 9216, count: 31 },
+      { value: 10240, count: 19 },
+      { value: 12288, count: 9 },
+      { value: 14336, count: 6 },
+    ],
+  },
+  {
+    problemId: '1003',
+    language: 'C++',
+    time: [
+      { value: 16, count: 8 },
+      { value: 24, count: 16 },
+      { value: 34, count: 21 },
+      { value: 40, count: 32 },
+      { value: 48, count: 41 },
+      { value: 56, count: 28 },
+      { value: 64, count: 19 },
+      { value: 80, count: 12 },
+      { value: 96, count: 7 },
+      { value: 120, count: 4 },
+    ],
+    memory: [
+      { value: 2048, count: 9 },
+      { value: 3072, count: 24 },
+      { value: 4096, count: 51 },
+      { value: 5120, count: 47 },
+      { value: 6144, count: 29 },
+      { value: 8192, count: 17 },
+      { value: 10240, count: 8 },
+      { value: 12288, count: 3 },
+    ],
+  },
+]
+
+export function findPerformancePreview(submission: Submission) {
+  if (submission.verdict !== 'AC') return undefined
+  return previews.find(
+    (preview) =>
+      preview.problemId === submission.problemId && preview.language === submission.language,
+  )
+}

frontend/src/data/preview.ts

@@ -264,7 +264,7 @@ export const verdictLabels: Record<Verdict, string> = {
   CE: 'Compile Error',
   Pending: '等待评测',
 }
-export const submissions: {
+export interface Submission {
   id: string
   problemId: string
   username: string
@@ -273,7 +273,8 @@ export const submissions: {
   time: number | null
   memory: number | null
   created: string
-}[] = [
+}
+export const submissions: Submission[] = [
   {
     id: '10248',
     problemId: '1001',