openheim 0.1.0

A fast, multi-provider LLM agent runtime written in Rust
Documentation 
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mod client;
mod resolve;
mod types;

pub use client::{build_http_client, create_client, resolve_client_and_config};
pub use types::{
    AgentConfig, AppConfig, McpServerConfig, ModelsInfo, ProviderConfig, ProviderModels,
};

use std::path::PathBuf;

use crate::error::{Error, Result};

const DEFAULT_CONFIG: &str = include_str!("config.toml.default");

pub fn config_dir() -> Result<PathBuf> {
    let home =
        dirs::home_dir().ok_or_else(|| Error::config("Could not determine home directory"))?;
    Ok(home.join(".openheim"))
}

pub fn config_path() -> Result<PathBuf> {
    Ok(config_dir()?.join("config.toml"))
}

/// Initialize the config file at ~/.openheim/config.toml with the default template.
/// Returns the path written to.
pub fn init_config() -> Result<PathBuf> {
    let dir = config_dir()?;
    std::fs::create_dir_all(&dir)?;
    let path = dir.join("config.toml");
    if path.exists() {
        return Err(Error::config(format!(
            "Config file already exists at {}",
            path.display()
        )));
    }
    std::fs::write(&path, DEFAULT_CONFIG)?;
    Ok(path)
}

/// Load AppConfig from a specific path
pub fn load_config_from(path: impl AsRef<std::path::Path>) -> Result<AppConfig> {
    let path = path.as_ref();
    if !path.exists() {
        return Err(Error::config(format!(
            "Config file not found at {}",
            path.display()
        )));
    }
    let contents = std::fs::read_to_string(path)?;
    let config: AppConfig = toml::from_str(&contents)?;
    Ok(config)
}

/// Load AppConfig from ~/.openheim/config.toml
pub fn load_config() -> Result<AppConfig> {
    let path = config_path()?;
    if !path.exists() {
        return Err(Error::config(format!(
            "Config file not found at {}. Run `openheim init` to create one.",
            path.display()
        )));
    }
    let contents = std::fs::read_to_string(&path)?;
    let config: AppConfig = toml::from_str(&contents)?;
    Ok(config)
}