use std::str::FromStr;

use chrono::Local;
use anyhow::Result;
use tracing::info;

/// # Fn `setup_logger`
/// 
/// ## function to init terminal logger 
/// 
/// ### Dev-Info : 
/// 
/// *input*     :       -
/// 
/// *output*     :       `anyhow::Result<()>`
/// 
/// *initiator*     :    fn `main`
/// 
/// *managing*     :       -
/// 
/// *depends on*    :  -
/// 
pub async fn setup_logger() -> Result<()> {
    // Builder::new()
    //     .format(move |buf, record| {
    //         writeln!(
    //             buf,
    //             "|{}| {} [{}] - {}",
    //             "api-grubber",
    //             Local::now().format("%d-%m-%Y %H:%M:%S"),
    //             record.level(),
    //             record.args(),
    //         )
    //     })
    //     .filter(None, LevelFilter::Info)
    //     .target(env_logger::Target::Stdout)
    //     .init();
    let log_level = std::env::var("IM_LOG_INFO").unwrap_or_else(|_| String::from("INFO"));

    tracing_subscriber::fmt()
    .with_max_level(
        tracing::Level::from_str(&log_level)
        .unwrap_or_else(|_| tracing::Level::INFO))
    .with_writer(std::io::stdout)
    .with_span_events(tracing_subscriber::fmt::format::FmtSpan::NEW)
    // .with_timer(Local::now().format("%d-%m-%Y %H:%M:%S"))
    .with_line_number(false)
    .with_target(false)
    .with_file(false)
    .compact()
    .init();

    info!("Logger configured");
    Ok(())
}


#[cfg(test)]
mod logger_unittests {
    use tokio::test;
    #[test]
    async fn check_logger_builder() {
        tracing_subscriber::fmt()
        .with_max_level(tracing::Level::INFO)
        .with_test_writer()
        .with_span_events(tracing_subscriber::fmt::format::FmtSpan::NEW)
        // .with_timer(Local::now().format("%d-%m-%Y %H:%M:%S"))
        .with_line_number(false)
        .with_target(false)
        .with_file(false)
        .compact()
        .init();
    }
}