algocline-app 0.12.0

algocline application layer — execution orchestration, package management
Documentation 
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use std::path::PathBuf;

use super::path::ContainedPath;

// ─── Eval Result Store ──────────────────────────────────────────

pub(super) fn evals_dir() -> Result<PathBuf, String> {
    let home = dirs::home_dir().ok_or("Cannot determine home directory")?;
    Ok(home.join(".algocline").join("evals"))
}

/// Persist eval result to `~/.algocline/evals/{strategy}_{timestamp}.json`.
///
/// Silently returns on I/O errors — storage must not break eval execution.
pub(super) fn save_eval_result(strategy: &str, result_json: &str) {
    let dir = match evals_dir() {
        Ok(d) => d,
        Err(_) => return,
    };
    if std::fs::create_dir_all(&dir).is_err() {
        return;
    }

    let now = std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .unwrap_or_default();
    let timestamp = now.as_secs();
    let eval_id = format!("{strategy}_{timestamp}");

    // Parse result to extract summary fields for meta file
    let parsed: serde_json::Value = match serde_json::from_str(result_json) {
        Ok(v) => v,
        Err(_) => return,
    };

    // Write full result
    let path = match ContainedPath::child(&dir, &format!("{eval_id}.json")) {
        Ok(p) => p,
        Err(_) => return,
    };
    let _ = std::fs::write(&path, result_json);

    // Write lightweight meta file for listing
    let result_obj = parsed.get("result");
    let stats_obj = parsed.get("stats");
    let aggregated = result_obj.and_then(|r| r.get("aggregated"));

    let meta = serde_json::json!({
        "eval_id": eval_id,
        "strategy": strategy,
        "timestamp": timestamp,
        "pass_rate": aggregated.and_then(|a| a.get("pass_rate")),
        "mean_score": aggregated.and_then(|a| a.get("scores")).and_then(|s| s.get("mean")),
        "total_cases": aggregated.and_then(|a| a.get("total")),
        "passed": aggregated.and_then(|a| a.get("passed")),
        "llm_calls": stats_obj.and_then(|s| s.get("auto")).and_then(|a| a.get("llm_calls")),
        "elapsed_ms": stats_obj.and_then(|s| s.get("auto")).and_then(|a| a.get("elapsed_ms")),
        "summary": result_obj.and_then(|r| r.get("summary")),
    });

    if let Ok(meta_path) = ContainedPath::child(&dir, &format!("{eval_id}.meta.json")) {
        let _ = serde_json::to_string(&meta).map(|s| std::fs::write(&meta_path, s));
    }
}

// ─── Eval Comparison Helpers ─────────────────────────────────────

/// Escape a string for embedding in a Lua single-quoted string literal.
///
/// Handles backslash, single quote, newline, and carriage return —
/// the characters that would break or alter a `'...'` Lua string.
pub(super) fn escape_for_lua_sq(s: &str) -> String {
    s.replace('\\', "\\\\")
        .replace('\'', "\\'")
        .replace('\n', "\\n")
        .replace('\r', "\\r")
}

/// Extract strategy name from eval_id (format: "{strategy}_{timestamp}").
pub(super) fn extract_strategy_from_id(eval_id: &str) -> Option<&str> {
    eval_id.rsplit_once('_').map(|(prefix, _)| prefix)
}

/// Persist a comparison result to `~/.algocline/evals/`.
pub(super) fn save_compare_result(eval_id_a: &str, eval_id_b: &str, result_json: &str) {
    let dir = match evals_dir() {
        Ok(d) => d,
        Err(_) => return,
    };
    let filename = format!("compare_{eval_id_a}_vs_{eval_id_b}.json");
    if let Ok(path) = ContainedPath::child(&dir, &filename) {
        let _ = std::fs::write(&path, result_json);
    }
}