11.5. App11: Add a new Contact

The code is unchanged here since we just upload the data and do not necessarily need to parse JSON responses (for now).

So let's put the code from App10 to addANewContact(contact: Contact) and onButtonAddTapped() methods:

//MARK: add a new contact call: add endpoint...
func addANewContact(contact: Contact){
    if let url = URL(string: APIConfigs.baseURL+"add"){
        
        AF.request(url, method:.post, parameters:
                    [
                        //MARK: we can unwrap them here since we made sure they are not null above...
                        "name": contact.name,
                        "email": contact.email,
                        "phone": contact.phone
                    ])
            .responseString(completionHandler: { response in
                //MARK: retrieving the status code...
                let status = response.response?.statusCode
                
                switch response.result{
                case .success(let data):
                    //MARK: there was no network error...
                    
                    //MARK: status code is Optional, so unwrapping it...
                    if let uwStatusCode = status{
                        switch uwStatusCode{
                            case 200...299:
                            //MARK: the request was valid 200-level...
                            self.getAllContacts()
                            self.clearAddViewFields()
                                break
                    
                            case 400...499:
                            //MARK: the request was not valid 400-level...
                                print(data)
                                break
                    
                            default:
                            //MARK: probably a 500-level error...
                                print(data)
                                break
                    
                        }
                    }
                    break
                    
                case .failure(let error):
                    //MARK: there was a network error...
                    print(error)
                    break
                }
            })
    }else{
        //alert that the URL is invalid...
    }
}

@objc func onButtonAddTapped(){
    //do the validations...
    if let name = mainScreen.textFieldAddName.text,
       let email = mainScreen.textFieldAddEmail.text,
       let phoneText = mainScreen.textFieldAddPhone.text{
        
        if let phone = Int(phoneText){
            //The String 'phoneText' is successfully converted to an Int...
            let contact = Contact(name: name, email: email, phone: phone)
            print(contact)
            //MARK: call add a new contact API endpoint...
            addANewContact(contact: contact)
        }else{
            //alert...
        }
    }
    else{
        //alert....
    }
}

Now, let's run the app.