// use rsneat::network::Network;
use rsneat::population::Population;
use rsneat::Neat;

#[test]
fn xor_fs() {
    let mut total = 0;
    let mut count = 0;
    let mut less_count = 0;
    let less_limit = 300;
    for i in 0..100 {
        println!("Run: {}", i + 1);
        let result = xor();
        if result < less_limit {
            less_count += 1;
        }
        total += result;
        count += 1;
    }
    println!(
        "Average for {} runs: {}",
        count,
        total as f64 / count as f64
    );
    println!(
        "Runs with less than {} gens to solve: {}",
        less_limit, less_count
    );
}

fn xor() -> usize {
    let mut neat = Neat::new();
    let mut pop = Population::new(3, 1, &mut neat);
    loop {
        let mut correct = true;
        for (mut n, fitness) in pop.iter_fitness() {
            correct = true;
            let data = [
                (vec![0.0, 0.0, 1.0], 0.0, false),
                (vec![0.0, 1.0, 1.0], 1.0, true),
                (vec![1.0, 0.0, 1.0], 1.0, true),
                (vec![1.0, 1.0, 1.0], 0.0, false),
            ];

            let mut error = 0.0;
            *fitness = 0.0;
            for (input, output, c) in data.iter() {
                for _ in 0..5 {
                    let _ = n.activate(input.clone().into_iter());
                }
                let result = n.activate(input.clone().into_iter()).next().unwrap();
                let result_error = (result - output).abs();
                error += result_error;

                let result = result >= 0.5;
                if *c != result {
                    correct = false;
                }

                n.reset();
            }
            *fitness += 4.0 - error;
            *fitness *= *fitness;
            if correct {
                break;
            }
        }
        if correct {
            pop.champ().write(&mut std::fs::File::create("champ.neat").unwrap()).unwrap();
            println!("Got a champ after {} gens!", pop.gen());
            return pop.gen();
        }
        pop.evaluate_generation(&mut neat);
    }
}