use crate::{gtfs, renderer};
use serde::{Serialize, Deserialize};
use std::fs;
use yaml_serde;


#[derive(Debug, PartialEq, Serialize, Deserialize)]
pub struct Config {
    #[serde(rename = "gtfs")]
    pub gtfs_prefs: gtfs::structs::Preferences,

    #[serde(rename = "screen")]
    pub screen_prefs: renderer::structs::Prefs,
}

#[derive (Debug)]
pub struct Error {
    pub message: String
}


impl From<std::io::Error> for Error {
    fn from(value: std::io::Error) -> Self {
        return Error {
            message: value.to_string(),
        };
    }
}

impl From<yaml_serde::Error> for Error {
    fn from(value: yaml_serde::Error) -> Self {
        return Error {
            message: value.to_string(),
        }
    }
}

impl From<sdl3::Error> for Error {
    fn from(value: sdl3::Error) -> Self {
        return Error {
            message: value.to_string(),
        }
    }
}


pub fn load_config(config_name: String) -> Result<Config, Error> {
    let config_text = fs::read_to_string(config_name)?;
    let config = yaml_serde::from_str(config_text.as_ref())?;
    return Ok(config);
}