elph-ai 0.0.27

Unified LLM API with provider collections, auth resolution, and streaming
Documentation 
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use std::env;
use std::path::Path;

use super::types::{AuthContext, BoxFuture};

/// Default auth context: environment variables and filesystem checks.
pub struct DefaultAuthContext;

impl DefaultAuthContext {
    pub fn new() -> Self {
        Self
    }
}

impl Default for DefaultAuthContext {
    fn default() -> Self {
        Self::new()
    }
}

impl AuthContext for DefaultAuthContext {
    fn env<'a>(&'a self, name: &'a str) -> BoxFuture<'a, Option<String>> {
        Box::pin(async move { env::var(name).ok().filter(|v| !v.trim().is_empty()) })
    }

    fn file_exists<'a>(&'a self, path: &'a str) -> BoxFuture<'a, bool> {
        let path = path.to_string();
        Box::pin(async move {
            let home = env::var_os("HOME").map(std::path::PathBuf::from);
            let resolved = if let Some(rest) = path.strip_prefix("~/") {
                home.map(|h| h.join(rest))
                    .unwrap_or_else(|| Path::new(&path).to_path_buf())
            } else if path == "~" {
                home.unwrap_or_else(|| Path::new(&path).to_path_buf())
            } else {
                Path::new(&path).to_path_buf()
            };
            resolved.exists()
        })
    }
}

pub fn default_auth_context() -> DefaultAuthContext {
    DefaultAuthContext::new()
}