use std::sync::{Arc, RwLock};

use mlua::prelude::*;

use super::{cell::Cell, Sheet};

pub trait LuaForEach {
    fn lua_foreach<'lua>(
        &self,
        func: LuaFunction<'lua>,
        range: Vec<(usize, usize)>,
    ) -> Result<(), LuaError>;
}

impl LuaForEach for Arc<RwLock<Sheet>> {
    fn lua_foreach<'lua>(
        &self,
        func: LuaFunction<'lua>,
        range: Vec<(usize, usize)>,
    ) -> Result<(), LuaError> {
        let mut this = self.write().unwrap();
        let mut sheet = this.clone();

        for (row, column) in range.iter() {
            let cellref = this.get_ref(*row, *column);

            match func.call::<_, Cell>(cellref) {
                Ok(cell) => sheet.set_cell(*row, *column, cell),
                Err(error) => return Err(error),
            }
        }

        this.apply(sheet);

        Ok(())
    }
}