use std::fmt::Debug;
use std::io;
use tracing::{Event, info, Subscriber};
use tracing_appender_timezone::non_blocking::WorkerGuard;
use tracing_subscriber::{fmt, Layer};
use tracing_subscriber::layer::{Context, SubscriberExt};
use tracing::field::{Field, Visit};
use tracing_appender_timezone::rolling::{RollingFileAppender, Rotation};


struct ErrorMessageVisitor {
    message: String
}

impl Visit for ErrorMessageVisitor {
    fn record_debug(&mut self, field: &Field, value: &dyn Debug) {
        if field.name() == "message" {
            self.message = format!("{:?}", value);
        }
    }
}


// 错误报告发送到指定服务器
struct ReportingLayer {
    account_name: String,
}
impl<S> Layer<S> for ReportingLayer
    where
        S: Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
{
    fn on_event(&self, event: &Event<'_>, _ctx: Context<'_, S>) {
        if event.metadata().level() == &tracing::Level::ERROR {
            let mut visitor = ErrorMessageVisitor {
                message: String::new()
            };
            event.record(&mut visitor);

            let msg = format!("account={}, type=error, msg={}", self.account_name.clone(), visitor.message);
            info!(msg)
            // send_remote_err_log(msg)
        }
    }
}

// pub fn send_remote_err_log(msg: String) {
//     tokio::spawn(async move {
//         let encoded_str = base64::encode(msg.clone());
//         let mut request_json_data = HashMap::new();
//         request_json_data.insert("serverName", "As");
//         request_json_data.insert("data", encoded_str.as_str());
//
//         let res = Client::new().post("https://hhh.liangjiang.cc/api/log/addError?key=d64a8sc874sa8c4as5")
//             .json(&request_json_data)
//             .send()
//             .await;
//
//         match res {
//             Ok(_resp) => {
//                 // let body = _resp.text().await.unwrap();
//             }
//             Err(err) => {
//                 warn!("log的error监听器发送远端报错失败：{:?}", err);
//             }
//         }
//     });
// }

pub fn init_log_with_debug() {
    let _ = final_init(tracing::Level::DEBUG.as_str(), 0, "test".to_string());
}

pub fn init_log_with_trace() {
    let _ = final_init(tracing::Level::TRACE.as_str(), 0, "test".to_string());
}

pub fn init_log_with_info() {
    let _ = final_init(tracing::Level::INFO.as_str(), 0, "test".to_string());
}

pub fn final_init(level: &str, port: u32, account_name: String) -> WorkerGuard {
    let mut path = String::new();
    path.push_str("./logs");
    path.push_str(port.to_string().as_str());

    let file_appender = RollingFileAppender::builder()
        .time_zone(8)
        .rotation(Rotation::DAILY)
        .filename_suffix("log")
        .build(path)
        .expect("initializing rolling file appender failed");
    let (non_blocking, guard) = tracing_appender_timezone::non_blocking(file_appender);

    use time::{macros::format_description, UtcOffset};
    use tracing_subscriber::{fmt::time::OffsetTime};
    let local_time = OffsetTime::new(
        UtcOffset::from_hms(8, 0, 0).unwrap(),
        format_description!("[month]-[day] [hour]:[minute]:[second].[subsecond digits:3]"),
    );

    let fmt_layer = fmt::layer()
        .with_timer(local_time.clone())
        .with_target(true)
        .with_line_number(true)
        .with_level(true)
        .with_writer(io::stdout)
        .with_span_events(fmt::format::FmtSpan::FULL);

    let file_layer = fmt::layer()
        .with_timer(local_time.clone())
        .with_target(true)
        .with_ansi(false)
        .with_level(true)
        .with_writer(non_blocking.clone())
        .with_span_events(fmt::format::FmtSpan::FULL);

    let reporting_layer = ReportingLayer {
        account_name
    };

    let layer = tracing_subscriber::Registry::default()
        .with(fmt_layer)
        .with(file_layer)
        .with(reporting_layer)
        .with(tracing_subscriber::EnvFilter::new(level));

    tracing::subscriber::set_global_default(layer).unwrap();

    return guard;
}