use anyhow::bail;

use anyhow::{anyhow, bail};

use libpijul::Conflict;

use libpijul::{ChannelRef, Conflict, TxnT};

}
fn get_channel<'a, T>(cli: Option<&'a str>, txn: &'a T) -> (&'a str, bool)
where
    T: TxnT,
{
    let cur = txn.current_channel().ok();
    let ch = cli.or(cur);
    (ch.unwrap_or(libpijul::DEFAULT_CHANNEL), ch == cur)

fn load_channel<T>(cli: Option<&str>, txn: &T) -> anyhow::Result<(ChannelRef<T>, bool)>
where
    T: TxnT,
{
    let (channel_name, is_current_channel) = get_channel(cli, &*txn);
    let channel = load_channel_exact(&channel_name, txn)?;
    Ok((channel, is_current_channel))
}
fn load_channel_exact<T>(name: &str, txn: &T) -> anyhow::Result<ChannelRef<T>>
where
    T: TxnT,
{
    txn.load_channel(name)?
        .ok_or_else(|| anyhow!("No such channel: {}", name))
}