use super::tray::Tray;
use crate::log_err;
use anyhow::Result;
use once_cell::sync::OnceCell;
use parking_lot::RwLock;
use std::sync::Arc;
use tauri::{AppHandle, Emitter, Manager, WebviewWindow};

#[derive(Debug, Default, Clone)]
pub struct Handle {
    pub app_handle: Arc<RwLock<Option<AppHandle>>>,
}

impl Handle {
    pub fn global() -> &'static Handle {
        static HANDLE: OnceCell<Handle> = OnceCell::new();

        HANDLE.get_or_init(|| Handle {
            app_handle: Arc::new(RwLock::new(None)),
        })
    }

    pub fn init(&self, app_handle: &AppHandle) {
        let mut handle = self.app_handle.write();
        *handle = Some(app_handle.clone());
    }

    pub fn app_handle(&self) -> Option<AppHandle> {
        self.app_handle.read().clone()
    }

    pub fn get_window(&self) -> Option<WebviewWindow> {
        self.app_handle()
            .as_ref()
            .and_then(|a| a.get_webview_window("main"))
    }

    pub fn refresh_clash() {
        if let Some(window) = Self::global().get_window() {
            log_err!(window.emit("verge://refresh-clash-config", "yes"));
        }
    }

    pub fn refresh_verge() {
        if let Some(window) = Self::global().get_window() {
            log_err!(window.emit("verge://refresh-verge-config", "yes"));
        }
    }

    #[allow(unused)]
    pub fn refresh_profiles() {
        if let Some(window) = Self::global().get_window() {
            log_err!(window.emit("verge://refresh-profiles-config", "yes"));
        }
    }

    pub fn notice_message<S: Into<String>, M: Into<String>>(status: S, msg: M) {
        if let Some(window) = Self::global().get_window() {
            log_err!(window.emit("verge://notice-message", (status.into(), msg.into())));
        }
    }

    /// update the system tray state
    pub fn update_systray_part() -> Result<()> {
        Tray::update_part()?;
        Ok(())
    }
}