restructure

app/http.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"fmt"
+	"net"
+	"regexp"
+	"strconv"
+)
+
+const (
+	HTTPDelimiter = "\r\n"
+)
+
+type Header struct {
+	Name  string
+	Value string
+}
+type Request struct {
+	Method  string
+	Path    string
+	Version string
+	Body    string
+	Headers []Header
+}
+
+type HttpCode struct {
+	Code    uint
+	Message string
+}
+
+var (
+	BadRequest = HttpCode{Code: 400, Message: "Bad Response"}
+	NotFound   = HttpCode{Code: 404, Message: "Not Found"}
+	OK         = HttpCode{Code: 200, Message: "OK"}
+)
+
+type Response struct {
+	Code    HttpCode
+	Version string
+	Body    string
+	BodyRaw []byte
+	Headers []Header
+}
+
+type StringRoute struct {
+	path    string
+	method  string
+	handler func(req Request) Response
+}
+
+type RegexRoute struct {
+	regex   *regexp.Regexp
+	method  string
+	handler func(req Request, matches []string) Response
+}
+
+type Routes struct {
+	stringRoutes []StringRoute
+	regexpRoutes []RegexRoute
+}
+
+// func createHandler(routes Routes) func(conn net.Conn) {
+// 	return func(conn net.Conn) {
+
+// 		for _, route := range(routes.stringRoutes){
+
+// 		}
+
+// 	}
+// }
+
+func Respond(conn net.Conn, response Response) {
+	fmt.Fprintf(conn, "%s %d %s%s", response.Version, response.Code.Code, response.Code.Message, HTTPDelimiter)
+	bodySize := 0
+	if response.Body != "" {
+		bodySize = len(response.Body)
+	} else {
+		bodySize = len(response.BodyRaw)
+	}
+	if bodySize > 0 {
+		response.Headers = append(response.Headers, Header{Name: "Content-Length", Value: strconv.Itoa(bodySize)})
+	}
+	for _, header := range response.Headers {
+		fmt.Fprintf(conn, "%s: %s%s", header.Name, header.Value, HTTPDelimiter)
+	}
+
+	fmt.Fprint(conn, HTTPDelimiter)
+	if bodySize > 0 {
+		if response.Body != "" {
+			fmt.Fprint(conn, response.Body)
+		} else {
+			conn.Write(response.BodyRaw)
+		}
+	}
+
+	// fmt.Fprintf(conn, "HTTP/1.1 %d %s%s%s", response.Code, response.Message, HTTPDelimiter, HTTPDelimiter)
+}

app/server.go

@@ -3,79 +3,25 @@ package main
 import (
 	"fmt"
 	"log"
-	"path/filepath"
-	"regexp"
-	"strconv"
-	"strings"
-
-	// Uncomment this block to pass the first stage
 	"net"
 	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
 )
 
-const (
+func getFilepath(filename string) string {
-	HTTPDelimiter = "\r\n"
+	if len(os.Args) != 3 {
-)
+		log.Fatal("Not enough args")
-
-type Header struct {
-	Name  string
-	Value string
 	}
-type Request struct {
+	dir, err := filepath.Abs(os.Args[2])
-	Method  string
+	if err != nil {
-	Path    string
+		log.Fatal(err)
-	Version string
+	}
-	Body    string
+	return filepath.Join(dir, filename)
-	Headers []Header
 }
 
-type HttpCode struct {
+func handleConnection(conn net.Conn, routes Routes) {
-	Code    uint
-	Message string
-}
-
-var (
-	BadRequest = HttpCode{Code: 400, Message: "Bad Response"}
-	NotFound   = HttpCode{Code: 404, Message: "Not Found"}
-	OK         = HttpCode{Code: 200, Message: "OK"}
-)
-
-type Response struct {
-	Code    HttpCode
-	Version string
-	Body    string
-	BodyRaw []byte
-	Headers []Header
-}
-
-func Respond(conn net.Conn, response Response) {
-	fmt.Fprintf(conn, "%s %d %s%s", response.Version, response.Code.Code, response.Code.Message, HTTPDelimiter)
-	bodySize := 0
-	if response.Body != "" {
-		bodySize = len(response.Body)
-	} else {
-		bodySize = len(response.BodyRaw)
-	}
-	if bodySize > 0 {
-		response.Headers = append(response.Headers, Header{Name: "Content-Length", Value: strconv.Itoa(bodySize)})
-	}
-	for _, header := range response.Headers {
-		fmt.Fprintf(conn, "%s: %s%s", header.Name, header.Value, HTTPDelimiter)
-	}
-
-	fmt.Fprint(conn, HTTPDelimiter)
-	if bodySize > 0 {
-		if response.Body != "" {
-			fmt.Fprint(conn, response.Body)
-		} else {
-			conn.Write(response.BodyRaw)
-		}
-	}
-
-	// fmt.Fprintf(conn, "HTTP/1.1 %d %s%s%s", response.Code, response.Message, HTTPDelimiter, HTTPDelimiter)
-}
-
-func handleConnection(conn net.Conn) {
 	defer conn.Close()
 	buffer := make([]byte, 1024)
 	n, err := conn.Read(buffer)
@@ -116,92 +62,136 @@ func handleConnection(conn net.Conn) {
 	}
 	fmt.Println(request)
 
-	if request.Path == "/" {
+	for _, route := range routes.stringRoutes {
-		Respond(conn, Response{Version: request.Version, Code: OK})
+		if request.Path == route.path && request.Method == route.method {
+			Respond(conn, route.handler(request))
 			return
 		}
+	}
 
-	if request.Path == "/user-agent" {
+	for _, route := range routes.regexpRoutes {
-		for _, header := range request.Headers {
+		if request.Method != route.method {
-			if header.Name != "User-Agent" {
 			continue
 		}
-			Respond(conn, Response{
+		if matches := route.regex.FindStringSubmatch(request.Path); len(matches) > 0 {
-				Version: request.Version,
+			Respond(conn, route.handler(request, matches))
-				Code:    OK,
-				Body:    header.Value,
-				Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
-			})
 			return
 		}
-		Respond(conn, Response{Version: request.Version, Code: BadRequest})
 	}
 
-	reFiles := regexp.MustCompile(`^/files/([A-Za-z0-9_\-.]+)$`)
+	// if request.Path == "/" {
-	if matches := reFiles.FindStringSubmatch(request.Path); len(matches) > 0 {
+	// 	Respond(conn, Response{Version: request.Version, Code: OK})
+	// 	return
+	// }
 
-		if len(os.Args) != 3 {
+	// if request.Path == "/user-agent" {
-			log.Fatal("Not enough args")
+	// 	for _, header := range request.Headers {
-		}
+	// 		if header.Name != "User-Agent" {
-		dir, err := filepath.Abs(os.Args[2])
+	// 			continue
-		if err != nil {
+	// 		}
-			log.Fatal(err)
+	// 		Respond(conn, Response{
-		}
+	// 			Version: request.Version,
-		filename := filepath.Join(dir, matches[1])
+	// 			Code:    OK,
+	// 			Body:    header.Value,
+	// 			Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
+	// 		})
+	// 		return
+	// 	}
+	// 	Respond(conn, Response{Version: request.Version, Code: BadRequest})
+	// }
 
-		// _, err:=os.Stat(filename)
+	// reFiles := regexp.MustCompile(`^/files/([A-Za-z0-9_\-.]+)$`)
-		// fmt.Println(file)
+	// if matches := reFiles.FindStringSubmatch(request.Path); len(matches) > 0 {
-		file, err := os.ReadFile(filename)
+	// 	filename := getFilepath(matches[1])
-		if os.IsNotExist(err) {
+	// 	file, err := os.ReadFile(filename)
-			Respond(conn, Response{Version: request.Version, Code: NotFound})
+	// 	if os.IsNotExist(err) {
-			return
+	// 		Respond(conn, Response{Version: request.Version, Code: NotFound})
-		}
+	// 		return
-		if err != nil {
+	// 	}
-			log.Fatal(err)
+	// 	if err != nil {
-		}
+	// 		log.Fatal(err)
+	// 	}
 
-		Respond(conn, Response{
+	// 	Respond(conn, Response{
-			Version: request.Version,
+	// 		Version: request.Version,
-			Code:    OK,
+	// 		Code:    OK,
-			BodyRaw: file,
+	// 		BodyRaw: file,
-			Headers: []Header{{Name: "Content-Type", Value: "application/octet-stream"}},
+	// 		Headers: []Header{{Name: "Content-Type", Value: "application/octet-stream"}},
-		})
+	// 	})
-		return
+	// 	return
-	}
+	// }
 
-	reEcho := regexp.MustCompile(`^/echo/([A-Za-z]+)$`)
+	// reEcho := regexp.MustCompile(`^/echo/([A-Za-z]+)$`)
-	if matches := reEcho.FindStringSubmatch(request.Path); len(matches) > 0 {
+	// if matches := reEcho.FindStringSubmatch(request.Path); len(matches) > 0 {
-		Respond(conn, Response{
+	// 	Respond(conn, Response{
-			Version: request.Version,
+	// 		Version: request.Version,
-			Code:    OK,
+	// 		Code:    OK,
-			Body:    matches[1],
+	// 		Body:    matches[1],
-			Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
+	// 		Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
-		})
+	// 	})
-		return
+	// 	return
-	}
+	// }
 
 	Respond(conn, Response{Version: request.Version, Code: NotFound})
 }
 
 func main() {
-	// You can use print statements as follows for debugging, they'll be visible when running tests.
 	fmt.Println("Logs from your program will appear here!")
 
-	// Uncomment this block to pass the first stage
-	//
 	l, err := net.Listen("tcp", "0.0.0.0:4221")
 	if err != nil {
 		fmt.Println("Failed to bind to port 4221")
 		os.Exit(1)
 	}
 
+	routes := Routes{
+		stringRoutes: []StringRoute{
+			// ROOT
+			{path: "/", method: "GET", handler: func(req Request) Response {
+				return Response{Version: req.Version, Code: OK}
+			}},
+
+			// USER AGENT
+			{path: "/user-agent", method: "GET", handler: func(req Request) Response {
+				for _, header := range req.Headers {
+					if header.Name != "User-Agent" {
+						continue
+					}
+					return Response{
+						Version: req.Version,
+						Code:    OK,
+						Body:    header.Value,
+						Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
+					}
+				}
+				return Response{Version: req.Version, Code: BadRequest}
+			}},
+		},
+
+		regexpRoutes: []RegexRoute{
+
+			// PATH PARAMETER
+			{
+				regex:  regexp.MustCompile(`^/echo/([A-Za-z]+)$`),
+				method: "GET",
+				handler: func(req Request, matches []string) Response {
+					return Response{
+						Version: req.Version,
+						Code:    OK,
+						Body:    matches[1],
+						Headers: []Header{{Name: "Content-Type", Value: "text/plain"}},
+					}
+				}},
+		},
+	}
+
 	for {
 		conn, err := l.Accept()
 		if err != nil {
 			fmt.Println("Error accepting connection: ", err.Error())
 			os.Exit(1)
 		}
-		go handleConnection(conn)
+		go handleConnection(conn, routes)
 	}
 
 }