use yew::prelude::*;
use yew::services::ConsoleService;
use yewtil::ptr::Irc;
use yewtil::ptr::Mrc;
use yewtil::NeqAssign;
use crate::view::WeakComponentLink;
use crate::viewmodel::Error;
use crate::viewmodel::telephone::*;
use crate::viewmodel::VCardPropertyInputObject;
use super::VCardPropertyInputComponent;

/// View Component for a `telephone` field
/// 
/// # Examples
/// 
/// ```compile_fail
/// let html = html!{
///     <TelephoneView   weak_link=some_weak_component_link 
///                 generated=self.link.callback(
///                     |n: Irc<Telephone>| 
///                     Msg::GeneratedTelephone(some_telephone)
///                 )
///     />
/// };
/// ```
pub struct TelephoneView {
    props: Props,
    value: Mrc<Telephone>,
    error: Option<Error>,
}

pub enum Msg {
    UpdateNumber(String),
    ToggleWork,
    ToggleHome,
    ToggleText,
    ToggleVoice,
    ToggleFax,
    ToggleCell,
    ToggleVideo,
    TogglePager,
    ToggleTextPhone,

    Generate,
}

#[derive(Clone, PartialEq, Properties)]
pub struct Props {
    pub generated: Callback<Irc<Telephone>>,
    pub weak_link: WeakComponentLink<TelephoneView>,
}

impl VCardPropertyInputComponent<Telephone> for TelephoneView {
    fn get_input_object(&self) -> Telephone {
        match self.value.irc().try_unwrap() {
            Ok(telephone) => telephone,
            Err(_) => {
                ConsoleService::error("Couldn't unwrap telephone");
                Telephone::new()
            },
        }
    }
    fn get_title(&self) -> String {
        "Telephone".to_string()
    }
    fn get_error(&self) -> Option<Error> {
        self.error.clone()
    }
}

impl Component for TelephoneView {
    type Message = Msg;
    type Properties = Props;
    fn create(props: <Self as yew::Component>::Properties, link: yew::html::Scope<Self>) -> Self {
        props.weak_link.borrow_mut().replace(link);
        Self {
            props,
            value: Mrc::new(Telephone::new()),
            error: None,
        }
    }
    fn update(&mut self, msg: <Self as yew::Component>::Message) -> bool {
        match msg {
            Msg::UpdateNumber(n) => self.value.number = n,
            Msg::ToggleWork => self.value.work = !self.value.work,
            Msg::ToggleHome => self.value.home = !self.value.home,
            Msg::ToggleText => self.value.text = !self.value.text,
            Msg::ToggleVoice => self.value.voice = !self.value.voice,
            Msg::ToggleFax => self.value.fax = !self.value.fax,
            Msg::ToggleCell => self.value.cell = !self.value.cell,
            Msg::ToggleVideo => self.value.video = !self.value.video,
            Msg::TogglePager => self.value.pager = !self.value.pager,
            Msg::ToggleTextPhone => self.value.text_phone = !self.value.text_phone,
            Msg::Generate => {
                self.props.generated.emit(self.value.irc());
            }
        };
        true
    }
    fn change(&mut self, props: <Self as yew::Component>::Properties) -> bool { 
        self.props.neq_assign(props)
    }
    fn view(&self) -> yew::virtual_dom::VNode {
        let link = self.props.weak_link.borrow().clone().unwrap();

        html!{
            <div class="box">
                { self.render_error() }

                <h3 class="subtitle">{ self.get_title() }</h3>

                { self.get_input_object().render(&link) }

            </div>
        }
    }
}