use std::{fmt::Debug, rc::Rc, sync::atomic::AtomicUsize};

use thiserror::Error;

#[derive(Debug, Error)]
pub enum SqlBulderError {
    #[error("`{0}`")]
    MissingParts(String),
}

pub trait Sql {
    fn sql(&self, s: String, ctx: &Context) -> String;
}

pub trait Id: Debug + Sql {
    fn id(&self) -> usize;
}

pub type Result<T> = std::result::Result<T, SqlBulderError>;

#[derive(Debug)]
pub struct Context {}

impl Context {
    pub fn new() -> Self {
        Context {}
    }
}

pub type Identifier = Rc<dyn Id>;

pub struct IdGen {}

impl IdGen {
    pub fn id() -> usize {
        static ID: AtomicUsize = AtomicUsize::new(0);

        ID.fetch_add(1, std::sync::atomic::Ordering::Relaxed)
    }
}