jorm 0.1.1

A lightweight DAG execution engine with natural language processing
Documentation 
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use crate::core::engine::TaskResult;
use crate::core::{error::JormError, task::TaskType};
use std::process::Stdio;
use tokio::process::Command;
use tokio::time::{timeout, Duration};

pub struct PythonExecutor;

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

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

    pub async fn execute(
        &self,
        task_name: &str,
        task_type: &TaskType,
    ) -> Result<TaskResult, JormError> {
        match task_type {
            TaskType::Python {
                script,
                args,
                working_dir,
            } => {
                self.execute_python_script(task_name, script, args.as_ref(), working_dir.as_deref())
                    .await
            }
            _ => Err(JormError::ExecutionError(format!(
                "Python executor cannot handle task type: {:?}",
                task_type
            ))),
        }
    }

    async fn execute_python_script(
        &self,
        task_name: &str,
        script: &str,
        args: Option<&Vec<String>>,
        working_dir: Option<&str>,
    ) -> Result<TaskResult, JormError> {
        // Create command - try python3 first, then python
        let mut cmd = Command::new("python3");
        cmd.arg(script)
            .stdout(Stdio::piped())
            .stderr(Stdio::piped());

        // Add script arguments if provided
        if let Some(script_args) = args {
            cmd.args(script_args);
        }

        // Set working directory if specified
        if let Some(dir) = working_dir {
            cmd.current_dir(dir);
        }

        // Try python3 first
        let timeout_duration = Duration::from_secs(60); // Python scripts might take longer

        let result = timeout(timeout_duration, cmd.output()).await;

        // If python3 fails, try python
        let output = match result {
            Ok(Ok(output)) => output,
            Ok(Err(_)) | Err(_) => {
                // Try with 'python' command
                let mut cmd = Command::new("python");
                cmd.arg(script)
                    .stdout(Stdio::piped())
                    .stderr(Stdio::piped());

                if let Some(script_args) = args {
                    cmd.args(script_args);
                }

                if let Some(dir) = working_dir {
                    cmd.current_dir(dir);
                }

                match timeout(timeout_duration, cmd.output()).await {
                    Ok(Ok(output)) => output,
                    Ok(Err(e)) => {
                        return Err(JormError::ExecutionError(format!(
                            "Failed to execute Python script '{}': {}",
                            script, e
                        )));
                    }
                    Err(_) => {
                        return Err(JormError::ExecutionError(format!(
                            "Python script '{}' timed out after {} seconds",
                            script,
                            timeout_duration.as_secs()
                        )));
                    }
                }
            }
        };

        let stdout = String::from_utf8_lossy(&output.stdout).to_string();
        let stderr = String::from_utf8_lossy(&output.stderr).to_string();

        let success = output.status.success();
        let error = if !stderr.is_empty() && !success {
            Some(stderr)
        } else {
            None
        };

        Ok(TaskResult {
            task_name: task_name.to_string(),
            success,
            output: stdout,
            error,
        })
    }
}