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use serde::{Deserialize, Serialize};

use crate::error::Result;
use std::str::FromStr;

#[derive(Debug, Serialize, Deserialize, Clone)]
pub enum LogLevel {
    #[serde(rename = "debug")]
    Debug,
    #[serde(rename = "info")]
    Info,
    #[serde(rename = "warn")]
    Warn,
    #[serde(rename = "error")]
    Error,
}

impl std::fmt::Display for LogLevel {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let s = match *self {
            LogLevel::Debug => "debug",
            LogLevel::Info => "info",
            LogLevel::Warn => "warn",
            LogLevel::Error => "error",
        };
        write!(f, "{}", s)
    }
}

impl FromStr for LogLevel {
    type Err = crate::error::Error;

    fn from_str(s: &str) -> Result<Self> {
        match s {
            "debug" => Ok(LogLevel::Debug),
            "info" => Ok(LogLevel::Info),
            "warn" => Ok(LogLevel::Warn),
            "error" => Ok(LogLevel::Error),
            _ => Ok(LogLevel::Info),
        }
    }
}