ch15.4

cmd/api/routes.go

@@ -21,6 +21,7 @@ func (app *application) routes() http.Handler {
 	router.HandlerFunc(http.MethodDelete, "/v1/movies/:id", app.deleteMovieHandler)
 
 	router.HandlerFunc(http.MethodPost, "/v1/users", app.registerUserHandler)
+	router.HandlerFunc(http.MethodPut, "/v1/users/activated", app.activateUserHandler)
 
 	return app.recoverPanic(app.rateLimit(router))
 }

cmd/api/users.go

@@ -75,3 +75,58 @@ func (app *application) registerUserHandler(w http.ResponseWriter, r *http.Reque
 		app.serverErrorResponse(w, r, err)
 	}
 }
+
+func (app *application) activateUserHandler(w http.ResponseWriter, r *http.Request) {
+	var input struct {
+		TokenPlaintext string `json:"token"`
+	}
+
+	err := app.readJSON(w, r, &input)
+	if err != nil {
+		app.badRequestResponse(w, r, err)
+		return
+	}
+
+	v := validator.New()
+
+	if data.ValidateTokenPlaintext(v, input.TokenPlaintext); !v.Valid() {
+		app.failedValidationResponse(w, r, v.Errors)
+		return
+	}
+
+	user, err := app.models.Users.GetForToken(data.ScopeActivation, input.TokenPlaintext)
+	if err != nil {
+		switch {
+		case errors.Is(err, data.ErrRecordNotFound):
+			v.AddError("token", "invalid or expired activation token")
+			app.failedValidationResponse(w, r, v.Errors)
+		default:
+			app.serverErrorResponse(w, r, err)
+		}
+		return
+	}
+
+	user.Activated = true
+
+	err = app.models.Users.Update(user)
+	if err != nil {
+		switch {
+		case errors.Is(err, data.ErrEditConflict):
+			app.editConflictResponse(w, r)
+		default:
+			app.serverErrorResponse(w, r, err)
+		}
+		return
+	}
+
+	err = app.models.Tokens.DeleteForUser(data.ScopeActivation, user.ID)
+	if err != nil {
+		app.serverErrorResponse(w, r, err)
+		return
+	}
+
+	err = app.writeJSON(w, http.StatusOK, envelope{"user": user}, nil)
+	if err != nil {
+		app.serverErrorResponse(w, r, err)
+	}
+}