methods for creating and getting users

api/user.go

@@ -1,13 +1,81 @@
 package api
 
 import (
+	"context"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
 	"github.com/google/uuid"
 )
 
+func UserCtx(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var user *User
+		var err error
+
+		if userID := chi.URLParam(r, "userID"); userID != "" {
+			user, err = dbGetUser(userID)
+		} else {
+			render.Render(w, r, ErrNotFound)
+			return
+		}
+		if err != nil {
+			render.Render(w, r, ErrNotFound)
+			return
+		}
+
+		ctx := context.WithValue(r.Context(), userKey{}, user)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func GetUser(w http.ResponseWriter, r *http.Request) {
+	user, ok := r.Context().Value(userKey{}).(*User)
+	if !ok || user == nil {
+		render.Render(w, r, ErrNotFound)
+		return
+	}
+
+	if err := render.Render(w, r, NewUserPayloadResponse(user)); err != nil {
+		render.Render(w, r, ErrRender(err))
+		return
+	}
+}
+
 func newUserID() string {
 	return "user_" + uuid.New().String()
 }
 
+func NewUser(w http.ResponseWriter, r *http.Request) {
+	err := r.ParseMultipartForm(64 << 10)
+	if err != nil {
+		http.Error(w, "Unable to parse form", http.StatusBadRequest)
+		return
+	}
+
+	newUserName := r.FormValue("name")
+
+	newUser := User{
+		ID:   newUserID(),
+		Name: newUserName,
+	}
+
+	err = dbAddUser(&newUser)
+	if err != nil {
+		render.Render(w, r, ErrRender(err))
+		return
+	}
+
+	render.Render(w, r, NewUserPayloadResponse(&newUser))
+}
+
+func (u *UserPayload) Render(w http.ResponseWriter, r *http.Request) error {
+	return nil
+}
+
+type userKey struct{}
+
 type User struct {
 	ID   string `json:"id"`
 	Name string `json:"name"`