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mod cli;
mod conf;
mod error;
mod file;
mod net;
mod rand;

pub use cli::*;
pub use conf::*;
pub use error::*;
pub use file::*;
pub use net::*;
pub use rand::*;

use std::error::Error as StdError;
use std::process::exit;

/// Get version string
pub fn get_version() -> &'static str {
    // split by "
    let blocks: Vec<&str> = include_str!("../../Cargo.toml").split('"').collect();

    // get fourth string
    match blocks.get(3) {
        Some(version) => {
            // check if contains two dots
            if version.split('.').count() == 3 {
                // return correct version
                version
            } else {
                // check first version
                check_version(&blocks, 0)
            }
        }
        None => check_version(&blocks, 0),
    }
}

// Return version string else check next
fn check_version(blocks: &[&'static str], index: usize) -> &'static str {
    // get string at index
    match blocks.get(index) {
        Some(version) => {
            // check if contains two dots
            if version.split('.').count() == 3 {
                // return correct version
                version
            } else {
                // check next version
                check_version(blocks, index + 1)
            }
        }
        None => "0.0.0",
    }
}

/// Print version
pub fn print_version() {
    println!("Filers {} (c) 2019 Lennart Heinrich", get_version());
}

// print error and exit 2
pub fn error<E>(error: E) -> !
where
    E: StdError,
{
    println!("{}", error);
    exit(2)
}

// print unknown and exit 3
pub fn unknown_error() -> ! {
    println!("An unknown error occured");
    exit(3)
}