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use chrono::{DateTime, Local};
use log::Level;

/// LogAppender append logs
/// Appender will be running on single main thread,please do_log for new thread or new an Future
pub trait LogAppender: Send {
    fn do_log(&self, record: &FastLogRecord);

    fn type_name(&self) -> &'static str {
        std::any::type_name::<Self>()
    }
}


#[derive(Clone, Debug)]
pub struct FastLogRecord {
    pub level: log::Level,
    pub target: String,
    pub args: String,
    pub module_path: String,
    pub file: String,
    pub line: Option<u32>,
    pub now: DateTime<Local>,
    pub formated: String,
}

impl FastLogRecord {
    pub fn format_line(&self) -> String {
        match (self.file.as_str(), self.line.unwrap_or(0)) {
            (file, line) => format!("({}:{})", file, line),
        }
    }
    pub fn set_formated(&mut self) {
        let data;
        let now = format!("{:36}",self.now.to_string());
        match self.level {
            Level::Warn | Level::Error => {
                data = format!("{} {} {} - {}  {}\n", &now, self.level, self.module_path, self.args, self.format_line());
            }
            _ => {
                data = format!("{} {} {} - {}\n", &now, self.level, self.module_path, self.args);
            }
        }
        self.formated = data;
    }
}