/// OSIRIS Engine Example
/// 
/// Demonstrates how to create an OSIRIS engine with the package
/// and execute multiple Rhai scripts

use osiris::register_osiris_full;
use rhai::Engine;
use std::fs;
use std::path::Path;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!("=== OSIRIS Engine Example ===\n");
    
    // Get all .rhai files in the current directory
    let example_dir = Path::new(file!()).parent().unwrap();
    let mut rhai_files: Vec<_> = fs::read_dir(example_dir)?
        .filter_map(|entry| entry.ok())
        .filter(|entry| {
            entry.path().extension()
                .and_then(|ext| ext.to_str())
                .map(|ext| ext == "rhai")
                .unwrap_or(false)
        })
        .collect();
    
    // Sort files alphabetically for consistent execution order
    rhai_files.sort_by_key(|entry| entry.file_name());
    
    if rhai_files.is_empty() {
        println!("No .rhai files found in examples/engine/");
        return Ok(());
    }
    
    println!("Found {} Rhai script(s):\n", rhai_files.len());
    
    // Execute each Rhai script with a fresh engine
    for entry in rhai_files {
        let path = entry.path();
        let filename = path.file_name().unwrap().to_string_lossy();
        
        println!("─────────────────────────────────────");
        println!("Running: {}", filename);
        println!("─────────────────────────────────────");
        
        // Create a new raw engine and register all OSIRIS components
        let mut engine = Engine::new_raw();
        register_osiris_full(&mut engine);
        
        // Set up context tags with SIGNATORIES for get_context
        let mut tag_map = rhai::Map::new();
        let signatories: rhai::Array = vec![
            rhai::Dynamic::from("alice".to_string()),
            rhai::Dynamic::from("bob".to_string()),
            rhai::Dynamic::from("charlie".to_string()),
        ];
        tag_map.insert("SIGNATORIES".into(), rhai::Dynamic::from(signatories));
        tag_map.insert("DB_PATH".into(), "/tmp/osiris_example".to_string().into());
        tag_map.insert("CONTEXT_ID".into(), "example_context".to_string().into());
        engine.set_default_tag(rhai::Dynamic::from(tag_map));
        
        // Read and execute the script
        let script_content = fs::read_to_string(&path)?;
        
        match engine.eval::<rhai::Dynamic>(&script_content) {
            Ok(result) => {
                println!("\n✓ Success!");
                if !result.is_unit() {
                    println!("Result: {}", result);
                }
            }
            Err(e) => {
                println!("\n✗ Error: {}", e);
            }
        }
        
        println!();
    }
    
    println!("─────────────────────────────────────");
    println!("All scripts executed!");
    
    Ok(())
}