use std::collections::HashSet;

use contact_request_manager::AddContact;
use jid::BareJID;
use js_sys::{wasm_bindgen::UnwrapThrowExt, Object, Reflect, JSON};
use leptos::{html::Div, prelude::*};
use overlay_scrollbars::OverlayScrollbars;
use reactive_stores::Store;
use roster_list_item::RosterListItem;
use tracing::debug;

use crate::{
    components::icon::IconComponent,
    icon::Icon,
    open_chats::{OpenChatsPanel, OpenChatsPanelStoreFields},
    roster::{Roster, RosterStoreFields},
};

mod contact_request_manager;
mod roster_list_item;

#[component]
pub fn RosterList() -> impl IntoView {
    let requests: ReadSignal<HashSet<BareJID>> =
        use_context().expect("no pending subscriptions in context");

    let open_chats: Store<OpenChatsPanel> =
        use_context().expect("no open chats panel store in context");

    let roster: Store<Roster> = use_context().expect("no roster in context");
    let (open_add_contact, set_open_add_contact) = signal(false);
    let open_chat = Memo::new(move |_| open_chats.chat_view().get());
    provide_context(open_chat);

    let roster_list: NodeRef<Div> = NodeRef::new();
    let roster_list_viewport: NodeRef<Div> = NodeRef::new();

    let _scrollbars = Effect::new(move |_| {
        if let Some(buffer) = roster_list.get() {
            if let Some(viewport) = roster_list_viewport.get() {
                let elements_obj = Object::new();
                Reflect::set(&elements_obj, &"viewport".into(), &viewport.into()).unwrap_throw();
                let element_obj = Object::new();
                Reflect::set(&elements_obj, &"elements".into(), &elements_obj).unwrap_throw();
                Reflect::set(&element_obj, &"target".into(), &buffer.into()).unwrap_throw();
                // let element = Object::define_property(&Object::define_property(&Object::new(), &"target".into(), &buffer.into()), &"elements".into(), &Object::define_property(&Object::new(), &"viewport".into(), &viewport.into()));
                debug!(
                    "scrollable element: {}",
                    JSON::stringify(&element_obj.clone().into()).unwrap_throw()
                );
                OverlayScrollbars(element_obj, Object::new());
            }
        }
    });

    let add_contact: NodeRef<Div> = NodeRef::new();
    let add_contact_viewport: NodeRef<Div> = NodeRef::new();

    let _scrollbars = Effect::new(move |_| {
        if let Some(buffer) = add_contact.get() {
            if let Some(viewport) = add_contact_viewport.get() {
                let scrollbars_obj = Object::new();
                Reflect::set(&scrollbars_obj, &"theme".into(), &"os-macaw".into()).unwrap_throw();
                Reflect::set(&scrollbars_obj, &"move".into(), &"leave".into()).unwrap_throw();
                let options_obj = Object::new();
                Reflect::set(&options_obj, &"scrollbars".into(), &scrollbars_obj).unwrap_throw();

                let elements_obj = Object::new();
                Reflect::set(&elements_obj, &"viewport".into(), &viewport.into()).unwrap_throw();
                let element_obj = Object::new();
                Reflect::set(&elements_obj, &"elements".into(), &elements_obj).unwrap_throw();
                Reflect::set(&element_obj, &"target".into(), &buffer.into()).unwrap_throw();
                // let element = Object::define_property(&Object::define_property(&Object::new(), &"target".into(), &buffer.into()), &"elements".into(), &Object::define_property(&Object::new(), &"viewport".into(), &viewport.into()));
                debug!(
                    "scrollable element: {}",
                    JSON::stringify(&element_obj.clone().into()).unwrap_throw()
                );
                OverlayScrollbars(element_obj, options_obj);
            }
        }
    });

    // TODO: filter new messages signal
    view! {
        <div class="roster-list panel">
            <div class="header">
                <h2>Roster</h2>
                <div class="add-contact header-icon" class:open=open_add_contact>
                    <IconComponent
                        icon=Icon::AddContact24
                        on:click=move |_| set_open_add_contact.update(|state| *state = !*state)
                    />
                    {move || {
                        if !requests.read().is_empty() {
                            view! { <div class="badge"></div> }.into_any()
                        } else {
                            view! {}.into_any()
                        }
                    }}
                </div>
            </div>
            {move || {
                if *open_add_contact.read() {
                    view! {
                        <div class="overlay-scroll add-contact-panel" node_ref=add_contact>
                            <div class="roster-add-contact" node_ref=add_contact_viewport>
                                <AddContact />
                            </div>
                        </div>
                    }
                        .into_any()
                } else {
                    view! {}.into_any()
                }
            }}
            <div class="overlay-scroll" node_ref=roster_list>
                <div class="roster-list-roster" node_ref=roster_list_viewport>
                    <For
                        each=move || roster.contacts().get()
                        key=|contact| contact.0.clone()
                        let(contact)
                    >
                        <RosterListItem contact=contact.1 />
                    </For>
                </div>
            </div>
        </div>
    }
}