HTTP Server BoilerPlate complete

.gitignore

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+.vscode/
+rssagg
+.env

go.mod

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+module github.com/joeyyy09/rssagg
+
+go 1.20
+
+require (
+	github.com/go-chi/chi v1.5.4
+	github.com/go-chi/cors v1.2.1
+	github.com/joho/godotenv v1.5.1
+)

go.sum

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+github.com/go-chi/chi v1.5.4 h1:QHdzF2szwjqVV4wmByUnTcsbIg7UGaQ0tPF2t5GcAIs=
+github.com/go-chi/chi v1.5.4/go.mod h1:uaf8YgoFazUOkPBG7fxPftUylNumIev9awIWOENIuEg=
+github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
+github.com/go-chi/cors v1.2.1/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=

handler_err.go

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+package main
+
+import "net/http"
+
+func handlerErr(w http.ResponseWriter, r *http.Request) {
+	respondWithError(w, http.StatusInternalServerError, "Internal Server Error")
+}

handler_readiness.go

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+package main
+
+import "net/http"
+
+func handlerReadiness(w http.ResponseWriter, r *http.Request) {
+	respondWithJSON(w, http.StatusOK, map[string]string{"status": "ok"})
+}

json.go

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+package main
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+)
+
+func respondWithError(w http.ResponseWriter, code int, message string) {
+ if code > 499 {
+	log.Println("Respondong with error: ", message)
+ }
+ type errorResponse struct {
+	Error string `json:"error"`
+}
+
+respondWithJSON(w, code, errorResponse{Error: message})
+}
+
+func respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	dat, err := json.Marshal(payload)
+	if err != nil {
+		log.Printf("Error marshalling JSON: %s", err)
+		w.WriteHeader(500)
+		return
+	}
+	w.WriteHeader(code)
+	w.Write(dat)
+}
+

main.go

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+package main
+
+import (
+  	"log"
+	"net/http"
+	"os"
+
+	"github.com/go-chi/chi"
+	"github.com/go-chi/cors"
+	"github.com/joho/godotenv"
+)
+
+func main() {
+	godotenv.Load()
+	portString:= os.Getenv("PORT")
+	if portString == "" {
+    log.Fatal("$PORT must be set")
+	}
+
+	router:= chi.NewRouter()
+
+router.Use(cors.Handler(cors.Options{
+		AllowedOrigins:   []string{"https://*", "http://*"},
+		AllowedMethods:   []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
+		AllowedHeaders:   []string{"*"},
+		ExposedHeaders:   []string{"Link"},
+		AllowCredentials: false,
+		MaxAge:           300,
+	}))
+
+	v1Router := chi.NewRouter()
+	v1Router.Get("/healthz", handlerReadiness)
+	v1Router.Get("/err", handlerErr)
+
+	router.Mount("/v1", v1Router)
+
+	srv := &http.Server{
+		Handler: router,
+		Addr:	":" + portString,
+	}
+
+	log.Println("Server is running on port " + portString)
+
+	err := srv.ListenAndServe()
+	if err!=nil{
+		log.Fatal(err)
+	}
+
+
+
+
+}