use crate::{
DriverCallback, DriverCategory, DriverContext,
types::{Driver, DriverParameter},
};
use anyhow::Result;
use serde_json::{Value, json};
use std::collections::HashMap;
use std::env;
#[derive(Debug)]
pub struct OsGetEnvDriver;
#[async_trait::async_trait]
impl Driver for OsGetEnvDriver {
fn name(&self) -> &str {
"os_get_env"
}
fn description(&self) -> &str {
"Get environment variables"
}
fn usage_hint(&self) -> &str {
"Use this skill to get the value of an environment variable, or list all variables"
}
fn parameters(&self) -> Vec<DriverParameter> {
vec![DriverParameter {
name: "name".to_string(),
param_type: "string".to_string(),
description: "Environment variable name (optional, returns all if not specified)"
.to_string(),
required: false,
default: None,
example: Some(Value::String("PATH".to_string())),
enum_values: None,
}]
}
fn example_call(&self) -> Value {
json!({
"action": "os_get_env",
"parameters": {
"name": "PATH"
}
})
}
fn example_output(&self) -> String {
"PATH=/usr/local/bin:/usr/bin:/bin".to_string()
}
fn category(&self) -> DriverCategory {
DriverCategory::OperatingSystemBasis
}
async fn execute(
&self,
parameters: &HashMap<String, Value>,
_callback: Option<&dyn DriverCallback>,
_context: Option<&DriverContext>,
) -> Result<String> {
let name = parameters.get("name").and_then(|v| v.as_str());
if let Some(name) = name {
match env::var(name) {
Ok(value) => Ok(format!("{}={}", name, value)),
Err(_) => Ok(format!("Environment variable '{}' not found", name)),
}
} else {
let mut result = String::from("Environment variables:\n");
let mut vars: Vec<(String, String)> = env::vars().collect();
vars.sort_by(|a, b| a.0.cmp(&b.0));
for (key, value) in vars.iter().take(100) {
let display_value = if value.len() > 200 {
format!("{}...", &value[..200])
} else {
value.clone()
};
result.push_str(&format!(" {}={}\n", key, display_value));
}
if vars.len() > 100 {
result.push_str(&format!(" ... and {} more\n", vars.len() - 100));
}
Ok(result)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_os_get_env_metadata() {
let driver = OsGetEnvDriver;
assert_eq!(driver.name(), "os_get_env");
assert_eq!(driver.category(), DriverCategory::OperatingSystemBasis);
}
}