use log::LevelFilter;
use serde::{Deserialize, Serialize};

#[derive(Serialize, Debug, Deserialize)]
pub enum LogLevel {
    /// A level lower than all log levels.
    Off,
    /// Corresponds to the `Error` log level.
    Error,
    /// Corresponds to the `Warn` log level.
    Warn,
    /// Corresponds to the `Info` log level.
    Info,
    /// Corresponds to the `Debug` log level.
    Debug,
    /// Corresponds to the `Trace` log level.
    Trace,
}

#[derive(Serialize, Debug, Deserialize)]
pub struct BootConfig {
    pub logging_level: LogLevel,

    pub run_tests: bool,
    pub run_demos: bool,
    pub run_shader_tests: bool,
}

impl BootConfig {
    pub fn new() -> Self {
        let data = include_str!("../assets/kernel_config.json");

        // Parse the string of data into a Person object. This is exactly the
        // same function as the one that produced serde_json::Value above, but
        // now we are asking it for a Person as output.
        let p: BootConfig = serde_json::from_str(data).unwrap();
        info!("{:?}", p);
        p
    }

    pub fn log_level(&self) -> LevelFilter {
        use LevelFilter::*;
        match self.logging_level {
            LogLevel::Off => Off,
            LogLevel::Error => Error,
            LogLevel::Warn => Warn,
            LogLevel::Info => Info,
            LogLevel::Debug => Debug,
            LogLevel::Trace => Trace,
        }
    }
}