use log::info;
use rouille::Response;

use std::{
    io::Result,
    process::{Command, Output},
};

use crate::utils::flash::FlashResponse;

/// Executes a system command to shutdown the device immediately.
fn shutdown() -> Result<Output> {
    info!("Shutting down the device");
    // ideally, we'd like to shutdown after 5 seconds to allow time for JSON
    // response but this is not possible with the `shutdown` command alone.
    // TODO: send "shutting down..." message to `peach-oled` for display
    Command::new("sudo").arg("shutdown").arg("now").output()
}

pub fn handle_shutdown() -> Response {
    let (name, msg) = match shutdown() {
        Ok(_) => (
            "success".to_string(),
            "Shutting down the device".to_string(),
        ),
        Err(err) => (
            "error".to_string(),
            format!("Failed to shutdown the device: {}", err),
        ),
    };

    let (flash_name, flash_msg) = (format!("flash_name={}", name), format!("flash_msg={}", msg));

    Response::redirect_303("/power").add_flash(flash_name, flash_msg)
}