use lazy_static::lazy_static;

use dmn::dice;
use dmn::random_tables::RandomTables;
use dmn::rules::classes::Classes;
use dmn::rules::npcs::Npc;

mod cli;

lazy_static! {
    static ref CLASSES: Classes = Classes::new().expect("Failed to load classes.");
}

fn main() {
    let matches = cli::cli().get_matches();
    let random_tables = RandomTables::new().expect("Failed to load random tables.");

    match matches.subcommand() {
        Some(("random", sub_matches)) => {
            let random_command = sub_matches.subcommand().unwrap();
            match random_command {
                ("henchman", _) => {
                    let class_name = random_tables.roll_table("henchman_class").to_string();
                    let class_ref = match CLASSES.class(&class_name) {
                        Ok(class_ref) => class_ref,
                        Err(err) => {
                            eprintln!("Error: {}", err);
                            std::process::exit(1);
                        }
                    };
                    let npc = Npc::new(
                        Some(random_tables.roll_table("npc_alignment")),
                        Some(random_tables.roll_table("henchman_race")),
                        Some(class_ref),
                        None,
                    );
                    println!(
                        "{} {} {}",
                        npc.alignment.unwrap(),
                        npc.race.unwrap(),
                        npc.class.unwrap().name
                    );
                }
                ("magic", _) => {
                    let magic = random_tables.roll_table("ua_magic");
                    println!("{}", magic);
                }
                _ => unreachable!(),
            }
        }
        Some(("roll", sub_matches)) => {
            let formula = sub_matches.get_one::<String>("FORMULA").expect("required");
            match dice::roll_formula(formula) {
                Some(roll_result) => println!("Rolled: {}", roll_result),
                None => eprintln!("Error: Invalid roll formula or calculation failed."),
            }
        }
        Some(("table", sub_matches)) => {
            let table_name = sub_matches.get_one::<String>("TABLE").expect("required");
            let output_text = random_tables.roll_table(table_name);
            println!("{}", output_text)
        }
        _ => unreachable!(),
    }
}