use crate::utils::{config, dirs};
use anyhow::Result;
use once_cell::sync::OnceCell;
use parking_lot::Mutex;
use serde::{Deserialize, Serialize};
use std::sync::Arc;

pub struct VergeN {
    pub config: Arc<Mutex<IVerge>>,
}

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

        DATA.get_or_init(|| {
            let config = config::read_yaml::<IVerge>(dirs::verge_path());
            VergeN {
                config: Arc::new(Mutex::new(config)),
            }
        })
    }

    /// Save IVerge App Config
    pub fn save_file(&self) -> Result<()> {
        let config = self.config.lock();

        config::save_yaml(
            dirs::verge_path(),
            &*config,
            Some("# The Config for Clash IVerge App\n\n"),
        )
    }

    /// patch verge config
    /// only save to file
    pub fn patch_config(&self, patch: IVerge) -> Result<()> {
        let mut config = self.config.lock();

        macro_rules! patch {
            ($key: tt) => {
                if patch.$key.is_some() {
                    config.$key = patch.$key;
                }
            };
        }

        patch!(language);
        patch!(theme_mode);
        patch!(theme_blur);
        patch!(traffic_graph);

        patch!(enable_tun_mode);
        patch!(enable_service_mode);
        patch!(enable_auto_launch);
        patch!(enable_silent_start);
        patch!(enable_system_proxy);
        patch!(enable_proxy_guard);
        patch!(system_proxy_bypass);
        patch!(proxy_guard_duration);

        patch!(theme_setting);
        patch!(web_ui_list);
        patch!(clash_core);
        patch!(hotkeys);

        patch!(auto_close_connection);
        patch!(default_latency_test);

        self.save_file()
    }

    /// 在初始化前尝试拿到单例端口的值
    pub fn get_singleton_port() -> u16 {
        let config = config::read_yaml::<IVerge>(dirs::verge_path());

        #[cfg(not(feature = "verge-dev"))]
        const SERVER_PORT: u16 = 33331;
        #[cfg(feature = "verge-dev")]
        const SERVER_PORT: u16 = 11233;

        config.app_singleton_port.unwrap_or(SERVER_PORT)
    }
}

/// ### `verge.yaml` schema
#[derive(Default, Debug, Clone, Deserialize, Serialize)]
pub struct IVerge {
    /// app listening port
    /// for app singleton
    pub app_singleton_port: Option<u16>,

    // i18n
    pub language: Option<String>,

    /// `light` or `dark` or `system`
    pub theme_mode: Option<String>,

    /// enable blur mode
    /// maybe be able to set the alpha
    pub theme_blur: Option<bool>,

    /// enable traffic graph default is true
    pub traffic_graph: Option<bool>,

    /// clash tun mode
    pub enable_tun_mode: Option<bool>,

    /// windows service mode
    #[serde(skip_serializing_if = "Option::is_none")]
    pub enable_service_mode: Option<bool>,

    /// can the app auto startup
    pub enable_auto_launch: Option<bool>,

    /// not show the window on launch
    pub enable_silent_start: Option<bool>,

    /// set system proxy
    pub enable_system_proxy: Option<bool>,

    /// enable proxy guard
    pub enable_proxy_guard: Option<bool>,

    /// set system proxy bypass
    pub system_proxy_bypass: Option<String>,

    /// proxy guard duration
    pub proxy_guard_duration: Option<u64>,

    /// theme setting
    pub theme_setting: Option<IVergeTheme>,

    /// web ui list
    pub web_ui_list: Option<Vec<String>>,

    /// clash core path
    #[serde(skip_serializing_if = "Option::is_none")]
    pub clash_core: Option<String>,

    /// hotkey map
    /// format: {func},{key}
    pub hotkeys: Option<Vec<String>>,

    /// 切换代理时自动关闭连接
    pub auto_close_connection: Option<bool>,

    /// 默认的延迟测试连接
    pub default_latency_test: Option<String>,
}

#[derive(Default, Debug, Clone, Deserialize, Serialize)]
pub struct IVergeTheme {
    pub primary_color: Option<String>,
    pub secondary_color: Option<String>,
    pub primary_text: Option<String>,
    pub secondary_text: Option<String>,

    pub info_color: Option<String>,
    pub error_color: Option<String>,
    pub warning_color: Option<String>,
    pub success_color: Option<String>,

    pub font_family: Option<String>,
    pub css_injection: Option<String>,
}