#![allow(dead_code)]

use nalgebra::DMatrix;

use dyna3::engine::{Q, DescentHistory, Realization};

pub fn title(title: &str) {
    println!("─── {title} ───");
}

pub fn realization_diagnostics(realization: &Realization) {
    let Realization { result, history } = realization;
    println!();
    if let Err(ref message) = result {
        println!("❌️ {message}");
    } else {
        println!("✅️ Target accuracy achieved!");
    }
    println!("Steps: {}", history.scaled_loss.len() - 1);
    println!("Loss: {}", history.scaled_loss.last().unwrap());
}

pub fn gram_matrix(config: &DMatrix<f64>) {
    println!("\nCompleted Gram matrix:{}", (config.tr_mul(&*Q) * config).to_string().trim_end());
}

pub fn config(config: &DMatrix<f64>) {
    println!("\nConfiguration:{}", config.to_string().trim_end());
}

pub fn loss_history(history: &DescentHistory) {
    println!("\nStep │ Loss\n─────┼────────────────────────────────");
    for (step, scaled_loss) in history.scaled_loss.iter().enumerate() {
        println!("{:<4} │ {}", step, scaled_loss);
    }
}