Initial commit

cmd/fileserver/main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"fileserver/config"
+	"fileserver/internal/api"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"reflect"
+	"runtime"
+)
+
+func main() {
+	defer func() {
+		if r := recover(); r != nil {
+			log.Fatalf("Catch fatal error: %v\n", r)
+		}
+	}()
+	profile := defaultValue(os.Getenv("APP_PROFILE"), "prod")
+	if err := config.Initialize(profile); err != nil {
+		log.Fatalf("Error to read %s configuration: %v\n", profile, err)
+	}
+	log.Printf("Application starting with profile: %s", profile)
+	server := config.App.Server
+	mux := http.NewServeMux()
+	// Register all routes in the new ServeMux
+	log.Printf("Register all routes\n")
+	for url, handler := range api.Routes {
+		log.Printf("Register route %s for %v", url, getFunctionName(handler))
+		mux.HandleFunc(url, handler)
+	}
+	url := fmt.Sprintf("%s:%d", server.Host, server.Port)
+	log.Printf("Start server on %s\n", url)
+	if err := http.ListenAndServe(url, mux); err != nil {
+		log.Fatalf("%v\n", err)
+	}
+}
+
+// Function to get the name of a function from its reference
+func getFunctionName(fn any) string {
+	// Get the pointer to the function using reflection
+	pc := reflect.ValueOf(fn).Pointer()
+
+	// Use the pointer to get the function object
+	funcObj := runtime.FuncForPC(pc)
+
+	// Return the name of the function
+	return funcObj.Name()
+}
+
+func defaultValue(value string, other string) string {
+	if value != "" {
+		return value
+	}
+	return other
+}