Fix readme and example

README.md

@@ -1,2 +1,52 @@
-# api
+# API
 Generic api functions
+
+## Usage
+
+### api.Wrap(handler)
+
+Function Wrap wraps API handler and returns standard http.HandlerFunc. It encapsulate body parsing.
+
+#### Example
+
+```go
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+
+	"github.com/gogeneric/api"
+)
+
+func main() {
+	h := &http.Server{Addr: "0.0.0.0:3000"}
+	mux := http.NewServeMux()
+	h.Handler = mux
+
+	// Here is magic!
+	mux.Handle("/hello", api.Wrap(handleHello))
+
+	if err := h.ListenAndServe(); err != http.ErrServerClosed {
+		log.Fatalln(err)
+	}
+}
+
+// Our API handler with custom request and response types
+func handleHello(ctx context.Context, req *helloRequest) (*helloResponse, error) {
+	return &helloResponse{Message: fmt.Sprintf("Hello, %s!", req.Name)}, nil
+}
+
+// Custom request type
+type helloRequest struct {
+	Name string `json:"name"`
+}
+
+// Custom response type
+type helloResponse struct {
+	Message string `json:"message"`
+}
+
+```

_examples/wrap/main.go

@@ -6,7 +6,7 @@ import (
 	"log"
 	"net/http"
 
-	"github.com/gogeneric/web"
+	"github.com/gogeneric/api"
 )
 
 func main() {
@@ -15,7 +15,7 @@ func main() {
 	h.Handler = mux
 
 	// Here is magic!
-	mux.HandleFunc("/hello", api.Wrap(handleHello))
+	mux.Handle("/hello", api.Wrap(handleHello))
 
 	if err := h.ListenAndServe(); err != http.ErrServerClosed {
 		log.Fatalln(err)

go.mod

@@ -1,3 +1,3 @@
-module github.com/gogeneric/web
+module github.com/gogeneric/api
 
 go 1.18

handler.go

@@ -7,8 +7,8 @@ import (
 	"net/http"
 )
 
-//Wrap API handler and returns standard http handler function
-func Wrap[RQ any, RS any](handler func(ctx context.Context, request *RQ) (RS, error)) func(w http.ResponseWriter, r *http.Request) {
+//Wrap API handler and returns standard http.HandlerFunc function
+func Wrap[RQ any, RS any](handler func(ctx context.Context, request *RQ) (RS, error)) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		req := new(RQ)
 		if err := json.NewDecoder(r.Body).Decode(req); err != nil {