Basic site running

main.go

@@ -1,7 +1,62 @@
 package main
 
-import "fmt"
+import (
+	"embed"
+	"fmt"
+	"html/template"
+	"io"
+	"io/fs"
+	"mime"
+	"net/http"
+	"path/filepath"
+)
+
+//go:embed static
+var staticFiles embed.FS
 
 func main() {
-    fmt.Println("Saluton, mondo")
+    staticFS := fs.FS(staticFiles)
+    http.HandleFunc("GET /", index)
+    http.Handle("GET /static/{file}", http.FileServer(http.FS(staticFS)))
+
+    if err := http.ListenAndServe(":4321", nil); err != nil {
+        fmt.Printf("Unable to serve: %v\n", err)
+    }
+}
+
+func serveFile(system fs.FS) func(w http.ResponseWriter, r http.Request) {
+    return func(w http.ResponseWriter, r http.Request) {
+        file := r.PathValue("file")
+        reader, err := system.Open(file)
+
+        if err != nil {
+            http.Error(w, "File not found", 404)
+            return
+        }
+        defer reader.Close()
+
+        cont, err := io.ReadAll(reader)
+        handleHTTPError("Error reading file", err, w)
+        contType := mime.TypeByExtension(filepath.Ext(file))
+        w.Header().Add("Content-Type", contType)
+        _, err = w.Write(cont)
+        handleHTTPError("Error writing HTTP resp", err, w)
+    }
+}
+
+func index(w http.ResponseWriter, r *http.Request) {
+    w.Header().Set("Content-Type", "text/html; charset=utf8")
+    tmpl, err := template.ParseFiles("./tmpl/index.html", "./tmpl/base.html")
+    handleHTTPError("Error parsing template", err, w)
+
+    err = tmpl.Execute(w, nil)
+    handleHTTPError("Error executing on template", err, w)
+}
+
+func handleHTTPError(msg string, err error, w http.ResponseWriter) {
+    if err != nil {
+        fmt.Printf("%v: %v", msg, err)
+        http.Error(w, "Internal server error", 500)
+        return
+    }
 }