csusage 0.2.0

Coding agent CLI usage reports (ccusage fork with Claude Science support)
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mod last_window;

use std::{env, ffi::OsString, process};

pub(crate) use csusage_cli::*;
pub(crate) use csusage_cli_parser::Cli;

use csusage_config::ConfigContext;

use crate::DEFAULT_SESSION_DURATION_HOURS;

pub(crate) fn parse() -> Cli {
    let args = env::args_os().collect::<Vec<_>>();
    let arg_strings = args_to_strings(args.iter().skip(1).cloned()).unwrap_or_else(|message| {
        exit_with_usage(&message);
    });
    let config = ConfigContext::from_args(&arg_strings);
    let mut cli = Cli::parse_from_with_config(
        args,
        &config,
        DEFAULT_SESSION_DURATION_HOURS,
        env!("CCUSAGE_VERSION"),
    )
    .unwrap_or_else(|message| exit_with_usage(&message));
    if let Err(message) = last_window::resolve(&mut cli) {
        exit_with_usage(&message);
    }
    cli
}

fn exit_with_usage(message: &str) -> ! {
    eprintln!("{message}");
    eprintln!("Run 'ccusage --help' for usage.");
    process::exit(2);
}

fn args_to_strings<I>(args: I) -> Result<Vec<String>, String>
where
    I: IntoIterator<Item = OsString>,
{
    args.into_iter()
        .map(|arg| {
            arg.into_string()
                .map_err(|_| "Arguments must be valid UTF-8".to_string())
        })
        .collect()
}