From b41d272a7af790a0a5c27199dd869ac89c9f48d9 Mon Sep 17 00:00:00 2001
From: Adriano Serighelli <back3@smartenergia.com.br>
Date: Mon, 5 Jan 2026 16:55:36 -0300
Subject: [PATCH] =?UTF-8?q?Melhora=20requisi=C3=A7=C3=A3o=20HTTP=20no=20Ca?=
 =?UTF-8?q?lendarioService?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Utiliza SocketsHttpHandler para descompressão automática (GZip, Deflate, Brotli) e configura HttpRequestMessage com headers detalhados (Host, User-Agent, Accept, Accept-Encoding, Connection) para simular navegador e garantir compatibilidade com o servidor da CCEE. Troca PostAsync por SendAsync. Processamento do JSON permanece inalterado.
---
 Infrastructure/CalendarioService.cs | 39 +++++++++++++++++++++++------
 1 file changed, 32 insertions(+), 7 deletions(-)

diff --git a/Infrastructure/CalendarioService.cs b/Infrastructure/CalendarioService.cs
index b340a13..1405724 100644
--- a/Infrastructure/CalendarioService.cs
+++ b/Infrastructure/CalendarioService.cs
@@ -1,6 +1,9 @@
-using System.Text.Json;
+using System.Text.Json;
 using System.Globalization;
 using Application;
+using System.Net;
+using System.Net.Http;
+using System.Net.Http.Headers;
 
 namespace Infrastructure
 {
@@ -32,9 +35,31 @@ namespace Infrastructure
 
             try
             {
-                using var client = new HttpClient();
+                using var handler = new SocketsHttpHandler
+                {
+                    // Adiciona Accept-Encoding automaticamente e faz a descompressão transparente
+                    AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate | DecompressionMethods.Brotli
+                };
+                using var client = new HttpClient(handler);
                 using var content = new FormUrlEncodedContent(values);
-                var resp = await client.PostAsync(Url, content, ct);
+
+                using var request = new HttpRequestMessage(HttpMethod.Post, Url)
+                {
+                    Content = content
+                };
+
+                // Headers solicitados
+                request.Headers.Host = "www.ccee.org.br";
+                request.Headers.UserAgent.ParseAdd("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36");
+                request.Headers.Accept.Clear();
+                request.Headers.Accept.ParseAdd("*/*");
+                request.Headers.AcceptEncoding.Clear();
+                request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue("gzip"));
+                request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue("deflate"));
+                request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue("br"));
+                request.Headers.Connection.Add("keep-alive");
+
+                var resp = await client.SendAsync(request, ct);
                 var resposta = await resp.Content.ReadAsStringAsync(ct);
 
                 var alvo = $"Data limite para coleta diária dos dados de medição no SCDE";
@@ -42,14 +67,14 @@ namespace Infrastructure
                 try
                 {
                     using var doc = JsonDocument.Parse(resposta);
-                    
+
                     double? encontrado = null;
                     double? startTimeDay = null;
 
                     void SearchJson(JsonElement el)
                     {
                         if (encontrado != null) return;
-                        
+
                         if (el.ValueKind == JsonValueKind.Object)
                         {
                             // Verifica se alguma propriedade contém o texto alvo
@@ -69,7 +94,7 @@ namespace Infrastructure
                                     }
                                 }
                             }
-                            
+
                             foreach (var prop in el.EnumerateObject())
                                 SearchJson(prop.Value);
                         }
@@ -79,7 +104,7 @@ namespace Infrastructure
                                 SearchJson(item);
                         }
                     }
-                    
+
                     SearchJson(doc.RootElement);
                     if (encontrado != null) return encontrado;
                 }