use remote_control_rs::tasks::{IntoTaskErr, Task};

pub struct Executor<'a, 't> {
    task: &'a Task<'t>,
    args: Box<[&'a str]>,
    output: Option<Result<String, String>>,
}

impl<'a, 't> Executor<'a, 't> {
    pub fn new(task: &'t Task<'t>, args: impl IntoIterator<Item = &'a str>) -> Result<Self, IntoTaskErr> {
        Ok(Self { task: task, args: args.into_iter().collect(), output: None })
    }

    pub fn run(&mut self) -> Option<&Result<String, String>> {
        self.output = Some((self.task.exec)(&self.args));
        self.output.as_ref()
    }
}