use anyhow::bail;
use jm_client_core::JMClient;
use tokio::process::Command;

pub const NO_SUCH_CATEGORY_ERROR: &str = "The given Category does not exist!";
pub const NO_SUCH_USER_ERROR: &str = "The given User does not exist!";

pub async fn assert_category_exists(client: &JMClient, cat: &str) -> anyhow::Result<()> {
    if !client.get_cats().await?.iter().any(|c| c.id == cat) {
        bail!(NO_SUCH_CATEGORY_ERROR);
    }

    Ok(())
}

pub async fn assert_user_exists(client: &JMClient, user: &str) -> anyhow::Result<()> {
    if !client.get_users().await?.iter().any(|u| u.name == user) {
        bail!(NO_SUCH_USER_ERROR);
    }

    Ok(())
}

pub async fn open_link(url: &str) -> anyhow::Result<()> {
    match std::env::var_os("BROWSER") {
        Some(browser) => {
            Command::new(&browser).arg(url).status().await?;
        },
        None => opener::open(&url)?,
    }

    Ok(())
}