feat: add badge for suspicious and spam users

src/services/trust-score.service.ts

@@ -0,0 +1,47 @@
+import DataLoader from 'dataloader'
+
+export interface TrustScoreData {
+  percentile: number
+}
+
+class TrustScoreService {
+  static instance: TrustScoreService
+
+  private trustScoreDataLoader = new DataLoader<string, TrustScoreData | null>(async (userIds) => {
+    return await Promise.all(
+      userIds.map(async (userId) => {
+        try {
+          const res = await fetch(`https://fayan.jumble.social/${userId}`)
+          if (!res.ok) {
+            if (res.status === 404) {
+              return { percentile: 0 }
+            }
+            return null
+          }
+          const data = await res.json()
+          if (typeof data.percentile === 'number') {
+            return { percentile: data.percentile }
+          }
+          return null
+        } catch {
+          return null
+        }
+      })
+    )
+  })
+
+  constructor() {
+    if (!TrustScoreService.instance) {
+      TrustScoreService.instance = this
+    }
+    return TrustScoreService.instance
+  }
+
+  async fetchTrustScore(userId: string): Promise<TrustScoreData | null> {
+    return await this.trustScoreDataLoader.load(userId)
+  }
+}
+
+const instance = new TrustScoreService()
+
+export default instance