feat(http): implement http response class

webserv/client/Client.cpp

@@ -1,5 +1,4 @@
 #include <webserv/client/Client.hpp>
-
 #include <webserv/config/ConfigManager.hpp> // for ConfigManager
 #include <webserv/config/ServerConfig.hpp>  // for ServerConfig
 #include <webserv/handler/ErrorHandler.hpp> // for ErrorHandler
@@ -16,7 +15,8 @@
 #include <sys/types.h> // for ssize_t
 
 Client::Client(std::unique_ptr<Socket> socket, Server &server)
-    : client_socket_(std::move(socket)), server_(std::ref(server)), httpRequest_(std::make_unique<HttpRequest>(this))
+    : client_socket_(std::move(socket)), server_(std::ref(server)), httpRequest_(std::make_unique<HttpRequest>(this)),
+      httpResponse_(std::make_unique<HttpResponse>(this))
 {
     Log::info("New client connected, fd: " + std::to_string(client_socket_->getFd()));
 }
@@ -49,7 +49,7 @@ void Client::request()
     }
     if (bytesRead == 0)
     {
-        Log::info("Client disconnected, fd: " + std::to_string(client_socket_->getFd())); //TODO weird
+        Log::info("Client disconnected, fd: " + std::to_string(client_socket_->getFd())); // TODO weird
         return;
     }
 
@@ -68,12 +68,15 @@ void Client::request()
                       {"body", httpRequest_->getBody()},
                       {"state", std::to_string(static_cast<uint8_t>(httpRequest_->getState()))},
                   });
-        server_config_ = ConfigManager::getInstance().getMatchingServerConfig(httpRequest_->getHeaders().get("Host"));
+        server_config_ =
+            ConfigManager::getInstance().getMatchingServerConfig(httpRequest_->getHeaders().getHost().value_or(""));
         if (server_config_ == nullptr)
         {
-            Log::warning("No matching server config found for Host: " + httpRequest_->getHeaders().get("Host"));
+            Log::warning("No matching server config found for Host: " +
+                         httpRequest_->getHeaders().getHost().value_or("unknown host"));
             httpRequest_->setState(HttpRequest::State::ParseError);
         }
+
         // Example usage, replace with actual host and port extraction from request
         server_.responseReady(client_socket_->getFd());
     }
@@ -87,23 +90,31 @@ void Client::request()
     }
 }
 
-std::string Client::getResponse() const
+bool Client::isResponseReady() const
+{
+    // todo: poll the httpResponse_ object
+}
+
+std::vector<uint8_t> Client::getResponse() const
 {
     Log::trace(LOCATION);
-    if (httpRequest_->getState() == HttpRequest::State::ParseError)
-    {
-        return ErrorHandler::generateErrorPage(Http::StatusCode::BAD_REQUEST);
-    }
-    std::string response = "HTTP/1.1 ";
-    response += "200 OK\r\n";
+    // if (httpRequest_->getState() == HttpRequest::State::ParseError)
+    // {
+    //     return ErrorHandler::generateErrorPage(Http::StatusCode::BAD_REQUEST);
+    // }
+    // std::string response = "HTTP/1.1 ";
+    // response += "200 OK\r\n";
 
-    auto serverName = server_config_->getDirectiveValue<std::string>("server_name");
-    auto port = server_config_->getDirectiveValue<int>("listen");
-    std::string body = "Server Name " + serverName + "\r\n";
-    body += "Server port " + std::to_string(port) + "\r\n";
-    response += "Content-Length: " + std::to_string(body.size()) + "\r\n\r\n";
-    response += body;
-    Log::info("Prepared response for client fd: " + std::to_string(client_socket_->getFd()));
-    Log::debug("Sending response:\n" + response);
-    return response;
+    // auto serverName = server_config_->getDirectiveValue<std::string>("server_name");
+    // auto port = server_config_->getDirectiveValue<int>("listen");
+    // std::string body = "Server Name " + serverName + "\r\n";
+    // body += "Server port " + std::to_string(port) + "\r\n";
+    // response += "Content-Length: " + std::to_string(body.size()) + "\r\n\r\n";
+    // response += body;
+    // Log::info("Prepared response for client fd: " + std::to_string(client_socket_->getFd()));
+    // Log::debug("Sending response:\n" + response);
+    httpResponse_->setStatus(200);
+    httpResponse_->addHeader("Content-Type", "text/plain");
+    httpResponse_->appendBody("Hello, World!\n");
+    return httpResponse_->toBytes();
 }

webserv/client/Client.hpp

@@ -1,5 +1,9 @@
 #pragma once
 
+// #include "webserv/http/HttpResponse.hpp"
+
+#include "webserv/http/HttpResponse.hpp"
+
 #include <webserv/config/ServerConfig.hpp> // for ServerConfig
 #include <webserv/http/HttpConstants.hpp>  // for OK
 #include <webserv/http/HttpRequest.hpp>    // for HttpRequest
@@ -7,12 +11,15 @@
 #include <webserv/socket/Socket.hpp>
 
 #include <cstddef> // for size_t
+#include <cstdint>
 #include <memory>  // for unique_ptr
 #include <string>  // for string
+#include <vector>
 
 class Server;
 class Socket;
 class ServerConfig;
+class HttpResponse;
 
 class Client
 {
@@ -27,15 +34,20 @@ class Client
     ~Client();
 
     void request();
-    [[nodiscard]] std::string getResponse() const;
+    [[nodiscard]] std::vector<uint8_t> getResponse() const;
 
+    [[nodiscard]] bool isResponseReady() const;
     [[nodiscard]] int getStatusCode() const;
+
+    [[nodiscard]] Socket &getSocket() const { return *client_socket_; }
+
     void setStatusCode(int code);
 
   private:
     int statusCode_ = Http::StatusCode::OK;
     constexpr static size_t bufferSize_ = 4096;
     std::unique_ptr<HttpRequest> httpRequest_ = nullptr;
+    std::unique_ptr<HttpResponse> httpResponse_ = nullptr;
     std::unique_ptr<Socket> client_socket_;
     Server &server_;
     mutable const ServerConfig *server_config_ = nullptr;

webserv/http/HttpConstants.cpp

@@ -0,0 +1,18 @@
+#include "HttpConstants.hpp"
+
+#include <string>
+
+namespace Http
+{
+std::string getStatusCodeReason(uint16_t statusCode)
+{
+    for (const auto &info : statusCodeInfos)
+    {
+        if (info.code == statusCode)
+        {
+            return std::string(info.reason);
+        }
+    }
+    return "Unknown Status";
+}
+} // namespace Http

webserv/http/HttpConstants.hpp

@@ -63,6 +63,8 @@ static constexpr std::array<StatusCodeInfo, 12> statusCodeInfos = {
      {.code = StatusCode::BAD_GATEWAY, .reason = "Bad Gateway"},
      {.code = StatusCode::SERVICE_UNAVAILABLE, .reason = "Service Unavailable"}}};
 
+std::string getStatusCodeReason(uint16_t statusCode);
+
 // Header Names
 namespace Header
 {

webserv/http/HttpResponse.cpp

@@ -1,3 +1,55 @@
+#include "webserv/http/HttpConstants.hpp"
+
 #include <webserv/http/HttpResponse.hpp>
 
-HttpResponse::HttpResponse() {}
+#include <string>
+#include <vector>
+
+HttpResponse::HttpResponse(Client *client) : client_(client), headers_(std::make_unique<HttpHeaders>()) {}
+
+void HttpResponse::addHeader(const std::string &key, const std::string &value)
+{
+    headers_->add(key, value);
+}
+
+void HttpResponse::appendBody(const std::vector<uint8_t> &data)
+{
+    body_.insert(body_.end(), data.begin(), data.end());
+}
+
+void HttpResponse::appendBody(const std::string &body)
+{
+    body_.insert(body_.end(), body.begin(), body.end());
+}
+
+void HttpResponse::setStatus(int statusCode)
+{
+    statusCode_ = statusCode;
+}
+
+const HttpHeaders &HttpResponse::getHeaders() const
+{
+    return *headers_;
+}
+
+std::string HttpResponse::getContentLength() const
+{
+    return "Content-Length: " + std::to_string(body_.size()) + "\r\n";
+}
+
+std::vector<uint8_t> HttpResponse::toBytes() const
+{
+    std::string headerStr;
+    std::string reason;
+
+    reason = Http::getStatusCodeReason(statusCode_);
+
+    headerStr = "HTTP/1.1 " + std::to_string(statusCode_) + " " + reason + "\r\n"; // todo: status line
+    headerStr += getContentLength();
+    headerStr += headers_->toString();
+
+    std::vector<uint8_t> responseData(headerStr.begin(), headerStr.end());
+    responseData.insert(responseData.end(), body_.begin(), body_.end());
+
+    return responseData;
+}

webserv/http/HttpResponse.hpp

@@ -1,7 +1,48 @@
 #pragma once
 
+#include "webserv/http/HttpHeaders.hpp"
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <vector>
+
+class Client;
+
 class HttpResponse
 {
   public:
-    HttpResponse();
+    HttpResponse(Client *client);
+
+    HttpResponse(const HttpResponse &other) = delete;                // Disable copy constructor
+    HttpResponse &operator=(const HttpResponse &other) = delete;     // Disable copy assignment
+    HttpResponse(HttpResponse &&other) noexcept = delete;            // Move constructor
+    HttpResponse &operator=(HttpResponse &&other) noexcept = delete; // Move assignment
+
+    ~HttpResponse() = default;
+
+    void addHeader(const std::string &key, const std::string &value);
+
+    void appendBody(const std::vector<uint8_t> &data);
+    void appendBody(const std::string &body);
+
+    void setComplete();
+
+    void setStatus(int statusCode);
+
+    [[nodiscard]] bool isComplete() const;
+
+    [[nodiscard]] const HttpHeaders &getHeaders() const;
+
+    [[nodiscard]] std::vector<uint8_t> toBytes() const;
+
+  private:
+    [[nodiscard]] std::string getStatusLine() const;
+    [[nodiscard]] std::string getContentLength() const;
+
+    Client *client_;
+    std::vector<uint8_t> body_;
+    std::unique_ptr<HttpHeaders> headers_;
+    bool complete_ = false;
+    int statusCode_ = 200;
 };

webserv/server/Server.cpp

@@ -1,9 +1,8 @@
-#include <webserv/server/Server.hpp>
-
 #include <webserv/client/Client.hpp>        // for Client
 #include <webserv/config/ConfigManager.hpp> // for ConfigManager
 #include <webserv/config/ServerConfig.hpp>  // for ServerConfig
 #include <webserv/log/Log.hpp>              // for Log
+#include <webserv/server/Server.hpp>
 #include <webserv/socket/Socket.hpp> // for Socket
 
 #include <cerrno>        // for errno
@@ -12,9 +11,9 @@
 #include <memory>        // for unique_ptr, allocator, make_unique
 #include <stdexcept>     // for runtime_error
 #include <string>        // for basic_string, operator+, to_string, char_traits, string
+#include <unordered_map> // for unordered_map, unordered_map<>::container_type
 #include <utility>       // for move, pair
 #include <vector>        // for vector
-#include <unordered_map> // for unordered_map, unordered_map<>::container_type
 
 #include <sys/epoll.h> // for epoll_event, epoll_ctl, EPOLLIN, EPOLLOUT, epoll_create1, epoll_wait, EPOLLERR, EPOLLHUP, EPOLL_CTL_ADD, EPOLL_CTL_DEL, EPOLL_CTL_MOD
 #include <sys/socket.h> // for send, SOMAXCONN
@@ -212,9 +211,8 @@ void Server::eventLoop()
             {
                 Log::debug("Attempting to send data to fd: " + std::to_string(event.data.fd));
                 Client &client = getClient(event.data.fd);
-                std::string response = client.getResponse();
-                const char *httpResponse = response.c_str();
-                ssize_t bytesSent = send(event.data.fd, httpResponse, strlen(httpResponse), 0);
+                auto httpResponse = client.getResponse();
+                ssize_t bytesSent = send(event.data.fd, httpResponse.data(), httpResponse.size(), 0);
                 if (bytesSent < 0)
                 {
                     Log::error("Send failed for fd: " + std::to_string(event.data.fd) +