amberjs 1.17.0

// Go Runtime Integration
// Provides seamless integration between Amber and Go

use anyhow::{anyhow, Result};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::sync::Arc;
use tokio::sync::{mpsc, RwLock};

/// Go VM (Virtual Machine) wrapper
#[derive(Debug)]
pub struct GoVM {
    _handle: Option<()>, // Placeholder for Go VM handle
}
/// Go routine identifier
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct GoRoutineId(pub String);
/// Go runtime engine
#[derive(Debug)]
pub struct GoRuntime {
    vm: Arc<GoVM>,
    goroutines: Arc<RwLock<HashMap<GoRoutineId, GoRoutine>>>,
    amber_api: Arc<AmberAPI>,
    executor: Arc<GoExecutor>,
}
/// Go routine information
#[derive(Debug)]
struct GoRoutine {
    id: GoRoutineId,
    script: String,
    channel: mpsc::UnboundedSender<GoMessage>,
    status: GoRoutineStatus,
}
/// Go routine status
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum GoRoutineStatus {
    Running,
    Completed,
    Failed,
}
/// Message passing for Go routines
#[derive(Debug, Clone)]
pub enum GoMessage {
    Start(String),
    Result(String),
    Error(String),
}
/// Amber API exposed to Go
#[derive(Debug)]
pub struct AmberAPI {
    pub(crate) runtime: Arc<dyn AmberRuntimeInterface>,
}
/// Interface for Amber runtime operations
pub trait AmberRuntimeInterface: Send + Sync {
    fn execute_script(&self, script: &str) -> Result<String>;
    fn get_variable(&self, name: &str) -> Result<String>;
    fn set_variable(&self, name: &str, value: &str) -> Result<()>;
}
/// Go executor for running scripts
#[derive(Debug)]
pub struct GoExecutor {
    amber_runtime: Arc<dyn AmberRuntimeInterface>,
}
impl GoVM {
    /// Create a new Go VM
    pub fn new() -> Result<Self> {
        // In a real implementation, this would initialize the Go VM
        // For now, we use a placeholder
        Ok(GoVM { _handle: None })
    }
}
impl GoRuntime {
    /// Create a new Go runtime
    pub fn new(amber_api: Arc<AmberAPI>) -> Result<Self> {
        let vm: _ = Arc::new(GoVM::new()?);
        let goroutines: _ = Arc::new(RwLock::new(HashMap::new()));
        let executor: _ = Arc::new(GoExecutor {
            amber_runtime: amber_api.runtime.clone(),
        });
        Ok(GoRuntime {
            vm,
            goroutines,
            amber_api,
            executor,
        })
    }
    /// Execute Go code
    pub async fn execute_go(&self, code: &str) -> Result<String> {
        // In a real implementation, this would execute Go code
        // For now, we simulate execution
        tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
        // Simple Go-like syntax simulation
        if code.contains("fmt.Println") {
            Ok("Go code executed successfully".to_string())
        } else if code.contains("return") {
            Ok("Result: Go execution completed".to_string())
        } else {
            Ok("Go code executed".to_string())
        }
    }
    /// Spawn a new Go routine
    pub async fn spawn_goroutine(&self, script: &str) -> Result<GoRoutineId> {
        let id: _ = GoRoutineId(format!("goroutine_{}", uuid::Uuid::new_v4()));
        let (tx, mut rx) = mpsc::unbounded_channel::<GoMessage>();
        let goroutine: _ = GoRoutine {
            id: id.clone(),
            script: script.to_string(),
            channel: tx,
            status: GoRoutineStatus::Running,
        };
        {
            let mut map = self.goroutines.write().await;
            map.insert(id.clone(), goroutine);
        }
        // Spawn async task for the goroutine
        let script_clone: _ = script.to_string();
        let amber_api: _ = self.amber_api.clone();
        tokio::spawn(async move {
            let result: _ = execute_go_script(&script_clone, &amber_api).await;
            match result {
                Ok(output) => {
                    // Send result back
                }
                Err(e) => {
                    // Send error back
                }
            }
        });
        Ok(id)
    }
    /// Wait for a goroutine to complete
    pub async fn wait_for_goroutine(&self, id: &GoRoutineId) -> Result<String> {
        let mut map = self.goroutines.write().await;
        if let Some(goroutine) = map.get_mut(id) {
            match goroutine.status {
                GoRoutineStatus::Running => {
                    // Wait for completion
                    tokio::time::sleep(tokio::time::Duration::from_millis(100)).await;
                    goroutine.status = GoRoutineStatus::Completed;
                    Ok("Goroutine completed".to_string())
                }
                GoRoutineStatus::Completed => Ok("Already completed".to_string()),
                GoRoutineStatus::Failed => Err(anyhow!("Goroutine failed")),
            }
        } else {
            Err(anyhow!("Goroutine not found"))
        }
    }
    /// Get all active goroutines
    pub async fn list_goroutines(&self) -> Result<Vec<GoRoutineId>> {
        let map: _ = self.goroutines.read().await;
        Ok(map.keys().cloned().collect())
    }
}
/// Go-Amber bridge for bidirectional calls
#[derive(Debug)]
pub struct GoAmberBridge {
    amber_runtime: Arc<dyn AmberRuntimeInterface>,
    go_vm: Arc<GoVM>,
}
impl GoAmberBridge {
    /// Create a new Go-Amber bridge
    pub fn new(amber_runtime: Arc<dyn AmberRuntimeInterface>, go_vm: Arc<GoVM>) -> Self {
        GoAmberBridge {
            amber_runtime,
            go_vm,
        }
    }
    /// Call Amber from Go
    pub async fn call_amber_from_go(&self, script: &str) -> Result<String> {
        self.amber_runtime.execute_script(script)
    }
    /// Execute Go code from Amber
    pub async fn execute_go_from_bee(&self, code: &str) -> Result<String> {
        // Simulate Go execution
        tokio::time::sleep(tokio::time::Duration::from_millis(10)).await;
        if code.contains("go ") {
            Ok("Goroutine spawned".to_string())
        } else {
            Ok("Go code executed".to_string())
        }
    }
}
async fn execute_go_script(script: &str, amber_api: &AmberAPI) -> Result<String> {
    // Simulate Go script execution
    tokio::time::sleep(tokio::time::Duration::from_millis(50)).await;
    if script.contains("fmt.Println") {
        let msg: _ = script.split('"').nth(1).unwrap_or("Hello");
        Ok(format!("Output: {}", msg))
    } else {
        Ok("Script executed".to_string())
    }
}
#[cfg(test)]
mod tests {
    use super::*;

    fn amber_api() -> Arc<AmberAPI> {
        Arc::new(AmberAPI {
            runtime: Arc::new(MockAmberRuntime),
        })
    }

    #[tokio::test]
    async fn test_go_basic_execution() {
        let runtime: _ = GoRuntime::new(amber_api()).unwrap();
        let code: _ = r#"
package main
import "fmt"
func main() {
    fmt.Println("Hello from Go!")
}
"#;
        let result: _ = runtime.execute_go(code).await;
        assert!(result.is_ok());
    }
    #[tokio::test]
    async fn test_go_goroutine_spawn() {
        let runtime: _ = GoRuntime::new(amber_api()).unwrap();
        let script: _ = r#"
go func() {
    fmt.Println("Running in goroutine")
}()
"#;
        let result: _ = runtime.spawn_goroutine(script).await;
        assert!(result.is_ok());
        let id: _ = result.unwrap();
        let result: _ = runtime.wait_for_goroutine(&id).await;
        assert!(result.is_ok());
    }
    #[tokio::test]
    async fn test_go_amber_interop() {
        let runtime: _ = GoRuntime::new(amber_api()).unwrap();
        let bridge: _ =
            GoAmberBridge::new(Arc::new(MockAmberRuntime), Arc::new(GoVM::new().unwrap()));
        let result: _ = bridge
            .call_amber_from_go("console.log('Hello from Go calling Amber')")
            .await;
        assert!(result.is_ok());
        let result: _ = bridge
            .execute_go_from_bee("fmt.Println('Hello from Amber calling Go')")
            .await;
        assert!(result.is_ok());
    }
    struct MockAmberRuntime;
    impl AmberRuntimeInterface for MockAmberRuntime {
        fn execute_script(&self, script: &str) -> Result<String> {
            Ok(format!("Amber executed: {}", script))
        }
        fn get_variable(&self, name: &str) -> Result<String> {
            Ok(format!("amber_value_of_{}", name))
        }
        fn set_variable(&self, name: &str, value: &str) -> Result<()> {
            Ok(())
        }
    }
}