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use std::{
sync::{Arc, RwLock},
thread::JoinHandle,
};
use mlua::prelude::*;
use crate::lua;
use super::{cell::Cell, Sheet};
pub trait EvalFunction {
fn eval_function(
&self,
func: String,
range: Vec<(usize, usize)>,
) -> JoinHandle<Result<Sheet, String>>;
}
impl EvalFunction for Arc<RwLock<Sheet>> {
fn eval_function(
&self,
func_text: String,
range: Vec<(usize, usize)>,
) -> JoinHandle<Result<Sheet, String>> {
*self.read().unwrap().progress.lock().unwrap() = 0;
let this = Arc::clone(self);
std::thread::spawn(move || {
let lua = lua::get();
let read_sheet = this.read().unwrap();
let mut sheet = read_sheet.clone();
let result = lua.load(func_text).eval::<LuaFunction>();
match result {
Ok(func) => {
let read_sheet = this.read().unwrap();
for (i, (row, column)) in range.iter().enumerate() {
*read_sheet.progress.lock().unwrap() = (i * 100 / range.len()) as u8;
let cellref = read_sheet.get_ref(*row, *column);
match func.call::<_, Cell>(cellref) {
Ok(cell) => sheet.set_cell(*row, *column, cell),
Err(error) => return Err(error.to_string()),
}
}
}
Err(error) => return Err(error.to_string()),
}
Ok(sheet)
})
}
}
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