use clap::Subcommand;

#[derive(Subcommand)]
pub enum SyncCommand {
    #[command(name = "sync-start")]
    Start {
        #[arg(short, long)]
        source: String,
        #[arg(short, long)]
        target: String,
        #[arg(short, long, default_value = "mirror")]
        mode: String,
    },
    #[command(name = "sync-status")]
    Status,
}

pub fn handle_sync_command(cmd: SyncCommand) -> anyhow::Result<()> {
    match cmd {
        SyncCommand::Start { source, target, mode } => {
            use std::path::Path;
            
            println!("Syncing {} to {} (mode: {})", source, target, mode);
            
            let source_path = Path::new(&source);
            let target_path = Path::new(&target);
            
            if !source_path.exists() {
                return Err(anyhow::anyhow!("Source path not found: {}", source));
            }
            
            if mode == "mirror" {
                std::fs::create_dir_all(target_path)?;
                
                let entries = std::fs::read_dir(source_path)?;
                for entry in entries {
                    let entry = entry?;
                    let path = entry.path();
                    let target_file = target_path.join(entry.file_name());
                    
                    if path.is_file() {
                        std::fs::copy(&path, &target_file)?;
                        println!("  Copied: {:?}", entry.file_name());
                    } else if path.is_dir() {
                        std::fs::create_dir_all(&target_file)?;
                        println!("  Created directory: {:?}", entry.file_name());
                    }
                }
                
                println!("✓ Sync completed (mirror mode)");
            } else {
                return Err(anyhow::anyhow!("Unknown sync mode: {}. Use 'mirror'", mode));
            }
        }
        SyncCommand::Status => {
            println!("Checking sync status");
            println!("Note: Sync status tracking requires persistent state management.");
            println!("Current implementation: Simple directory sync without state tracking.");
        }
    }
    Ok(())
}