fix(mobile): handle RSSHub subscription limit errors

apps/mobile/src/lib/error-message.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from "vitest"
+
+import { sanitizeErrorMessage } from "./error-message"
+
+describe("sanitizeErrorMessage", () => {
+  it("removes Follow API request context from display messages", () => {
+    const message = [
+      "RSSHub feed subscription limit exceeded",
+      "Request: POST /subscriptions (original: /subscriptions)",
+      "Args: {",
+      '  "headers": {',
+      '    "cookie": "session=secret"',
+      "  }",
+      "}",
+    ].join("\n")
+
+    expect(sanitizeErrorMessage(message)).toBe("RSSHub feed subscription limit exceeded")
+  })
+
+  it("supports CRLF request context", () => {
+    expect(
+      sanitizeErrorMessage("Subscription limit exceeded\r\nRequest: POST /subscriptions"),
+    ).toBe("Subscription limit exceeded")
+  })
+
+  it("preserves ordinary error messages", () => {
+    expect(sanitizeErrorMessage("Unable to follow this feed")).toBe("Unable to follow this feed")
+  })
+})

apps/mobile/src/lib/error-message.ts

@@ -0,0 +1,4 @@
+const FOLLOW_API_REQUEST_CONTEXT_PATTERN = /\r?\nRequest:[\s\S]*$/u
+
+export const sanitizeErrorMessage = (message: string) =>
+  message.replace(FOLLOW_API_REQUEST_CONTEXT_PATTERN, "").trim()

apps/mobile/src/lib/error-parser.test.ts

@@ -0,0 +1,79 @@
+import { FollowAPIError } from "@follow-app/client-sdk"
+import { beforeEach, describe, expect, it, vi } from "vitest"
+
+import { toastFetchError } from "./error-parser"
+
+const mocks = vi.hoisted(() => ({
+  isPaymentEnabled: false,
+  showUpgradeRequiredDialog: vi.fn(),
+  toastError: vi.fn(),
+}))
+
+vi.mock("i18next", () => ({
+  t: (key: string) => {
+    if (key === "errors:2012") {
+      return "RSSHub feed subscription limit exceeded"
+    }
+    return key.replace(/^errors:/u, "")
+  },
+}))
+
+vi.mock("@/src/atoms/server-configs", () => ({
+  getIsPaymentEnabled: () => mocks.isPaymentEnabled,
+}))
+
+vi.mock("@/src/modules/dialogs/UpgradeRequiredDialog", () => ({
+  showUpgradeRequiredDialog: mocks.showUpgradeRequiredDialog,
+}))
+
+vi.mock("./toast", () => ({
+  toast: {
+    error: mocks.toastError,
+  },
+}))
+
+describe("toastFetchError", () => {
+  beforeEach(() => {
+    mocks.isPaymentEnabled = false
+    mocks.showUpgradeRequiredDialog.mockClear()
+    mocks.toastError.mockClear()
+  })
+
+  it("shows a concise upgrade dialog for RSSHub subscription limits", () => {
+    mocks.isPaymentEnabled = true
+    const error = new FollowAPIError(
+      [
+        "RSSHub feed subscription limit exceeded",
+        "Request: POST /subscriptions (original: /subscriptions)",
+        'Args: { "headers": { "cookie": "session=secret" } }',
+      ].join("\n"),
+      402,
+      "2012",
+    )
+
+    toastFetchError(error)
+
+    expect(mocks.showUpgradeRequiredDialog).toHaveBeenCalledWith({
+      title: "RSSHub feed subscription limit exceeded",
+      message: "settings:subscription.summary.free_description",
+    })
+    expect(mocks.toastError).not.toHaveBeenCalled()
+  })
+
+  it("does not expose request context when an API error code has no translation", () => {
+    const error = new FollowAPIError(
+      [
+        "Unable to follow this feed",
+        "Request: POST /subscriptions (original: /subscriptions)",
+        'Args: { "headers": { "cookie": "session=secret" } }',
+      ].join("\n"),
+      400,
+      "29999",
+    )
+
+    toastFetchError(error)
+
+    expect(mocks.toastError).toHaveBeenCalledOnce()
+    expect(mocks.toastError).toHaveBeenCalledWith("Unable to follow this feed")
+  })
+})

apps/mobile/src/lib/error-parser.ts

@@ -5,6 +5,7 @@ import { FetchError } from "ofetch"
 import { getIsPaymentEnabled } from "@/src/atoms/server-configs"
 import { showUpgradeRequiredDialog } from "@/src/modules/dialogs/UpgradeRequiredDialog"
 
+import { sanitizeErrorMessage } from "./error-message"
 import { toast } from "./toast"
 
 export const getFetchErrorInfo = (
@@ -21,11 +22,11 @@ export const getFetchErrorInfo = (
       const i18nKey = `errors:${code}` as any
       const i18nMessage = t(i18nKey) === i18nKey ? message : t(i18nKey)
       return {
-        message: `${i18nMessage}${reason ? `: ${reason}` : ""}`,
+        message: sanitizeErrorMessage(`${i18nMessage}${reason ? `: ${reason}` : ""}`),
         code,
       }
     } catch {
-      return { message: error.message }
+      return { message: sanitizeErrorMessage(error.message) }
     }
   }
 
@@ -35,15 +36,15 @@ export const getFetchErrorInfo = (
       const i18nKey = `errors:${code}` as any
       const i18nMessage = t(i18nKey) === i18nKey ? error.message : t(i18nKey)
       return {
-        message: i18nMessage,
+        message: sanitizeErrorMessage(i18nMessage),
         code,
       }
     } catch {
-      return { message: error.message }
+      return { message: sanitizeErrorMessage(error.message) }
     }
   }
 
-  return { message: error.message }
+  return { message: sanitizeErrorMessage(error.message) }
 }
 
 export const getFetchErrorMessage = (error: Error) => {
@@ -58,7 +59,7 @@ export const createErrorToaster = (title?: string) => (err: Error) =>
   toastFetchError(err, { title })
 
 export const toastFetchError = (error: Error, { title: _title }: { title?: string } = {}) => {
-  const { message: fallbackMessage } = error
+  const fallbackMessage = sanitizeErrorMessage(error.message)
   let message = fallbackMessage
   let _reason = ""
   let code: number | undefined
@@ -113,6 +114,8 @@ export const toastFetchError = (error: Error, { title: _title }: { title?: strin
     }
   }
 
+  message = sanitizeErrorMessage(message)
+
   // 2fa errors are handled by the form
   if (code === 4007 || code === 4008) {
     return

locales/errors/en.json

@@ -19,6 +19,7 @@
   "2004": "Feed failed to parse",
   "2010": "Ownership challenge failed",
   "2011": "Subscription limit exceeded",
+  "2012": "RSSHub feed subscription limit exceeded",
   "3000": "Entry not found",
   "4000": "Already claimed",
   "4001": "User wallet error",

locales/errors/fr-FR.json

@@ -19,6 +19,7 @@
   "2004": "Échec de l'analyse du flux",
   "2010": "Échec de la vérification de propriété",
   "2011": "Limite d'abonnement dépassée",
+  "2012": "Limite d'abonnement aux flux RSSHub dépassée",
   "3000": "Entrée introuvable",
   "4000": "Déjà réclamé",
   "4001": "Erreur de portefeuille utilisateur",

locales/errors/ja.json

@@ -19,6 +19,7 @@
   "2004": "フィードの解析に失敗しました",
   "2010": "所有権の確認に失敗しました",
   "2011": "購読制限を超えました",
+  "2012": "RSSHubフィードの購読数制限を超えました",
   "3000": "エントリが見つかりません",
   "4000": "すでに請求されています",
   "4001": "ユーザーウォレットエラー",

locales/errors/zh-CN.json

@@ -19,6 +19,7 @@
   "2004": "订阅源解析失败",
   "2010": "所有权挑战失败",
   "2011": "超出订阅限制",
+  "2012": "RSSHub 订阅源数量限制已超出",
   "3000": "未找到条目",
   "4000": "已被认领",
   "4001": "用户钱包错误",

locales/errors/zh-TW.json

@@ -19,6 +19,7 @@
   "2004": "訂閱源解析失敗",
   "2010": "所有權挑戰失敗",
   "2011": "超過訂閱限制",
+  "2012": "RSSHub 訂閱源數量限制已超過",
   "3000": "條目未找到",
   "4000": "已被認領",
   "4001": "用戶錢包錯誤",