use clap::Parser;

#[derive(Debug, Parser)]
#[command(version)]
pub struct Args {
    /// User Agent to use for requests
    #[arg(
        short,
        default_value = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"
    )]
    pub user_agent: String,

    /// Tags to search for
    #[arg(short, long)]
    pub tags: Option<Vec<String>>,

    /// Page to start scraping from
    #[arg(short, long, default_value_t = 1)]
    pub page: usize,

    /// Async jobs to use for fetching
    #[arg(short, long, default_value_t = 4)]
    pub jobs: usize,

    /// Delay for rate-limits (ms)
    #[arg(short, long, default_value = "1000", value_parser = parse_duration)]
    pub delay: std::time::Duration,
}

fn parse_duration(arg: &str) -> Result<std::time::Duration, std::num::ParseIntError> {
    let seconds = arg.parse()?;
    Ok(std::time::Duration::from_millis(seconds))
}