malakal 0.1.9

a day-planning calendar app based on egui
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use std::{
  process::Command,
  sync::{Arc, Mutex},
};

use chrono::Duration;
use timer::{Guard, Timer};

use crate::{config::Config, util::Shared};

#[derive(Clone)]
pub struct HookExecutor {
  timer: Arc<Timer>,
  guard: Shared<Option<Guard>>,
  command: Option<Vec<String>>,
  delay: Duration,
}

impl HookExecutor {
  pub fn new(config: &Config) -> Self {
    Self {
      timer: Arc::new(Timer::new()),
      guard: Arc::new(Mutex::new(None)),
      command: config.post_update_hook.clone(),
      delay: config.post_update_hook_delay,
    }
  }

  pub fn report_updated(&self) {
    let cmd_and_args = match self.command.as_ref() {
      None => return,
      Some(cmd_and_args) => cmd_and_args.clone(),
    };

    let mut guard = self.guard.lock().unwrap();

    // cancel previous timer
    drop(guard.take());

    let schedule_guard =
      self.timer.schedule_with_delay(self.delay, move || {
        let mut iter = cmd_and_args.iter();
        Command::new(iter.next().expect("Empty command"))
          .args(iter)
          .spawn()
          .expect("failed to spawn")
          .wait()
          .expect("failed to wait");
      });

    *guard = Some(schedule_guard)
  }
}