obol-cli 0.2.0

CLI to estimate the USD cost of an AI-agent transcript (Claude Code, Codex, Pi).
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use clap::{Parser, Subcommand};
use obol_core::{estimate_cost, refresh_pricing_tables, Dialect, PricingSource};
use std::path::PathBuf;
use std::process::ExitCode;

#[derive(Parser)]
#[command(name = "obol", about = "Estimate agent-transcript token cost")]
struct Cli {
    #[command(subcommand)]
    cmd: Cmd,
}

#[derive(Subcommand)]
enum Cmd {
    /// Estimate the cost of a transcript file.
    Estimate {
        path: PathBuf,
        #[arg(long, value_parser = ["claude", "codex", "pi", "gemini", "opencode", "copilot", "kimi"])]
        dialect: Option<String>,
        #[arg(long)]
        json: bool,
    },
    /// Fetch the latest LiteLLM price sheet.
    Refresh {
        /// Date stamp for the snapshot (YYYY-MM-DD); caller supplies the clock.
        #[arg(long)]
        as_of: String,
    },
}

fn run() -> Result<(), String> {
    let cli = Cli::parse();
    match cli.cmd {
        Cmd::Estimate {
            path,
            dialect,
            json,
        } => {
            let dialect = match dialect.as_deref() {
                Some(d) => match d {
                    "claude" => Dialect::Claude,
                    "codex" => Dialect::Codex,
                    "pi" => Dialect::Pi,
                    "gemini" => Dialect::Gemini,
                    "opencode" => Dialect::Opencode,
                    "copilot" => Dialect::Copilot,
                    "kimi" => Dialect::Kimi,
                    other => unreachable!("clap value_parser restricts dialect; got {other:?}"),
                },
                None => {
                    let bytes = std::fs::read(&path).map_err(|e| e.to_string())?;
                    obol_core::transcript::detect(&bytes)
                        .map_err(|e| format!("{e}; pass --dialect to choose one explicitly"))?
                }
            };
            let est = estimate_cost(&path, dialect).map_err(|e| e.to_string())?;
            if json {
                println!(
                    "{}",
                    serde_json::to_string_pretty(&est).map_err(|e| e.to_string())?
                );
            } else {
                let src = match est.pricing_source {
                    PricingSource::Bundled => "bundled",
                    PricingSource::Local => "local",
                };
                println!(
                    "total: ${:.4}  (pricing as of {}, {})",
                    est.total_usd, est.pricing_as_of, src
                );
                for m in &est.per_model {
                    println!("  {:30} ${:.4}", m.model, m.subtotal_usd);
                }
                if !est.unpriced_models.is_empty() {
                    println!(
                        "  unpriced (run `obol refresh`?): {}",
                        est.unpriced_models.join(", ")
                    );
                }
            }
            Ok(())
        }
        Cmd::Refresh { as_of } => {
            let r = refresh_pricing_tables(&as_of).map_err(|e| e.to_string())?;
            println!(
                "refreshed {} models -> {}",
                r.models,
                r.written_to.display()
            );
            Ok(())
        }
    }
}

fn main() -> ExitCode {
    match run() {
        Ok(()) => ExitCode::SUCCESS,
        Err(e) => {
            eprintln!("error: {e}");
            ExitCode::FAILURE
        }
    }
}