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use std::{fs::File, io::Write, path::PathBuf};

use statsrv::Service;

#[derive(Debug, Clone, serde::Deserialize)]
pub struct Config {
    pub title: String,
    pub template_path: PathBuf,
    pub output_dir: Option<PathBuf>,
    pub address: Option<String>,
    pub services: Vec<Service>,
}

fn main() -> Result<(), main_error::MainError> {
    let mut args = std::env::args().skip(1);

    let config_path = args
        .next()
        .unwrap_or_else(|| "/etc/statsrv.toml".to_string());
    let config_file = File::open(config_path)?;
    let config_toml = std::io::read_to_string(config_file)?;
    let Config {
        title,
        template_path: template,
        output_dir,
        address: _,
        services,
    } = toml::from_str(&config_toml)?;

    let template_file = File::open(template)?;
    let template = std::io::read_to_string(template_file)?;
    let status_page = statsrv::generate(title, services, template);

    if let Some(output_dir) = output_dir {
        std::fs::create_dir_all(&output_dir)?;
        let mut html_writer = File::create(output_dir.join("index.html"))?;

        html_writer.write_all(status_page.as_bytes())?;
    }

    Ok(())
}