feat(pav-6): add getLinkedinAuthUrl to frontend auth service

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 2 people

frontend/src/services/authService.ts

@@ -135,5 +135,19 @@ export async function getGoogleAuthUrl(): Promise<string> {
     throw createError(payload, "Falha ao obter URL de autenticacao Google.");
   }
 
+  return payload.url;
+}
+
+export async function getLinkedinAuthUrl(): Promise<string> {
+  const response = await fetch(buildUrl("/api/auth/linkedin/url"), {
+    credentials: "include",
+  });
+
+  const payload = await parseResponse(response);
+
+  if (!response.ok) {
+    throw createError(payload, "Falha ao obter URL de autenticacao LinkedIn.");
+  }
+
   return payload.url;
 }

frontend/tests/unit/services/auth.service.test.tsx

@@ -296,4 +296,48 @@ describe("authService", () => {
       );
     });
   });
+
+  describe("getLinkedinAuthUrl", () => {
+    it("should return LinkedIn auth URL on success", async () => {
+      fetchMock.mockResolvedValueOnce(
+        mockResponse({
+          jsonData: { url: "https://www.linkedin.com/oauth/v2/authorization?state=abc" },
+        })
+      );
+
+      const url = await auth.getLinkedinAuthUrl();
+
+      expect(url).toBe("https://www.linkedin.com/oauth/v2/authorization?state=abc");
+      expect(fetchMock).toHaveBeenCalledWith(
+        expect.stringContaining("/api/auth/linkedin/url"),
+        expect.objectContaining({ credentials: "include" })
+      );
+    });
+
+    it("should throw error on failure with message", async () => {
+      fetchMock.mockResolvedValueOnce(
+        mockResponse({
+          ok: false,
+          status: 500,
+          jsonData: { message: "Provider unavailable" },
+        })
+      );
+
+      await expect(auth.getLinkedinAuthUrl()).rejects.toThrow("Provider unavailable");
+    });
+
+    it("should throw error on failure without message", async () => {
+      fetchMock.mockResolvedValueOnce(
+        mockResponse({
+          ok: false,
+          status: 500,
+          jsonData: {},
+        })
+      );
+
+      await expect(auth.getLinkedinAuthUrl()).rejects.toThrow(
+        "Falha ao obter URL de autenticacao LinkedIn."
+      );
+    });
+  });
 });