use std::sync::mpsc::Receiver;

use anyhow::{Context, Result};
use self_update::{cargo_crate_version, update::Release};

use crate::{
    jobs::{queue_job, update_status, Job, JobResult, JobState, Status},
    update::{build_updater, BIN_NAME},
};

pub struct CheckUpdateResult {
    pub update_available: bool,
    pub latest_release: Release,
    pub found_binary: bool,
}

fn run_check_update(status: &Status, cancel: Receiver<()>) -> Result<Box<CheckUpdateResult>> {
    update_status(status, "Fetching latest release".to_string(), 0, 1, &cancel)?;
    let updater = build_updater().context("Failed to create release updater")?;
    let latest_release = updater.get_latest_release()?;
    let update_available =
        self_update::version::bump_is_greater(cargo_crate_version!(), &latest_release.version)?;
    let found_binary = latest_release.assets.iter().any(|a| a.name == BIN_NAME);

    update_status(status, "Complete".to_string(), 1, 1, &cancel)?;
    Ok(Box::new(CheckUpdateResult { update_available, latest_release, found_binary }))
}

pub fn queue_check_update() -> JobState {
    queue_job("Check for updates", Job::CheckUpdate, move |status, cancel| {
        run_check_update(status, cancel).map(JobResult::CheckUpdate)
    })
}