use crate::{
    types::dietype,
    util::{junk, random, validate},
};

use rand::Rng;
use serenity::builder::{CreateCommand, CreateCommandOption};
use serenity::model::application::{CommandOptionType, ResolvedOption, ResolvedValue};

pub async fn run(options: &[ResolvedOption<'_>]) -> String {
    if let Some(ResolvedOption {
        value: ResolvedValue::String(input),
        ..
    }) = options.first()
    {
        println!("got to the roll command! input: {}", input);
        let split = input.split("d").nth(1).unwrap();
        let die_num = match validate::parse_str_into_num::<i32>(split.trim()) {
            Some(d) => d,
            None => return junk::get_random_insult(),
        };

        let _die_type = match dietype::DieType::from_sides(die_num) {
            Some(d) => d.to_sides(),
            None => return junk::get_random_insult(),
        };
        let mut rng = random::RandomGen::new();
        let result = rng.rng.gen_range(1..die_num).to_string();
        return format!("{result}");
    } else {
        junk::get_random_insult()
    }
}

pub fn register() -> CreateCommand {
    CreateCommand::new("roll")
        .description("Roll dice")
        .add_option(
            CreateCommandOption::new(
                CommandOptionType::String,
                "input",
                "The number sides for the dice roll, typically starts with \'d\' then a number",
            )
            .required(true),
        )
}