sansavision-pulse-cli 0.4.0

use clap::{Parser, Subcommand};
use std::io::Write;
use std::net::TcpListener;
use std::path::{Path, PathBuf};
use std::process::Stdio;
use tokio::process::Command;
use tracing::{Level, info, warn};
use tracing_subscriber::FmtSubscriber;

mod migrate;
use migrate::{MigrateArgs, MigrateCommand};

#[derive(Parser)]
#[command(name = "pulse")]
#[command(about = "Pulse — Real-time, without the pain.", long_about = None)]
struct Cli {
    #[command(subcommand)]
    command: Commands,
}

#[derive(Subcommand)]
enum Commands {
    /// Start local dev environment (relay + dashboard + API server)
    Dev {
        #[arg(short, long, default_value_t = 4001)]
        relay_port: u16,
        #[arg(short, long, default_value_t = 4000)]
        dashboard_port: u16,
    },
    /// Create a new project from template
    Init {
        /// Project name
        name: String,
        /// Template to use (e.g. video-call, data-channel)
        #[arg(short, long)]
        template: Option<String>,
    },
    /// Inspect a live session
    Inspect {
        /// The ID of the session to connect to
        session_id: String,
        /// Control plane URL
        #[arg(long, default_value = "http://localhost:4002")]
        control_url: String,
    },
    /// View real-time metrics
    Metrics {
        /// Control plane URL
        #[arg(long, default_value = "http://localhost:4002")]
        control_url: String,
    },
    /// Simulate network conditions
    Simulate {
        #[arg(long, default_value = "0%")]
        loss: String,
        #[arg(long, default_value = "0ms")]
        latency: String,
        #[arg(long, default_value = "0ms")]
        jitter: String,
    },
    /// Record a session for debugging
    Record {
        session_id: String,
        #[arg(short, long)]
        duration: Option<String>,
        #[arg(short, long)]
        output: Option<String>,
    },
    /// Replay a recorded session
    Replay {
        file_path: String,
        #[arg(short, long)]
        speed: Option<String>,
    },
    /// Migrate from WebRTC to Pulse
    Migrate(MigrateArgs),
    /// Schema operations (PSL v2)
    Schema {
        #[command(subcommand)]
        cmd: SchemaCommands,
    },
}

#[derive(Subcommand)]
enum SchemaCommands {
    /// Parse and validate a .psl file
    Check {
        /// Path to the .psl schema file
        file: String,
        /// Output format (text, json)
        #[arg(long, default_value = "text")]
        format: String,
    },
    /// Generate typed stubs from a .psl schema file
    Compile {
        /// Path to the .psl schema file
        file: String,
        /// Comma-separated list of target languages (rust,ts)
        #[arg(short, long, default_value = "rust")]
        lang: String,
        /// Output directory for generated files
        #[arg(short, long, default_value = ".")]
        output: String,
    },
    /// Generate Markdown API documentation from .psl files
    Docs {
        /// Path to the .psl schema file
        file: String,
        /// Output directory for docs
        #[arg(short, long, default_value = "./docs")]
        output: String,
    },
    /// Scaffold a new .psl project
    Init {
        /// Project directory
        #[arg(default_value = ".")]
        dir: String,
    },
    /// Compare two .psl files and report breaking vs non-breaking changes
    Diff {
        /// Original .psl schema file
        old_file: String,
        /// New .psl schema file
        new_file: String,
    },
    /// Push a PSL schema to a SansaDB instance
    Push {
        /// Path to the .psl schema file
        file: String,
        /// SansaDB instance URL
        #[arg(long, default_value = "sansadb://localhost:4500")]
        db: String,
        /// Show what would change without applying
        #[arg(long)]
        dry_run: bool,
        /// Apply breaking changes (data loss possible)
        #[arg(long)]
        force: bool,
    },
    /// Extract a .psl schema from a TypeScript DSL file
    Extract {
        /// Source file (.pulse.ts)
        file: String,
        /// Name of the output file (.psl)
        #[arg(long, default_value = "schema.psl")]
        out: String,
    },
    /// Import a .proto file and convert it to PSL
    #[command(name = "from-proto")]
    FromProto {
        /// Path to the .proto file
        file: String,
        /// Emit .psl output (default: true)
        #[arg(long, default_value_t = true)]
        emit_psl: bool,
        /// Comma-separated list of target languages to generate (e.g. rust,ts)
        #[arg(short, long)]
        lang: Option<String>,
        /// Output directory
        #[arg(short, long, default_value = ".")]
        output: String,
    },
}

#[tokio::main]
async fn main() {
    let subscriber = FmtSubscriber::builder()
        .with_max_level(Level::INFO)
        .finish();
    tracing::subscriber::set_global_default(subscriber).unwrap();

    let cli = Cli::parse();

    match &cli.command {
        Commands::Dev {
            relay_port,
            dashboard_port,
        } => {
            // ── Port conflict detection ───────────────────────────────────
            let ports_to_check: Vec<(u16, &str)> = vec![
                (*relay_port, "Relay (WS + QUIC)"),
                (4002, "Control Plane API"),
                (9090, "Prometheus exporter"),
                (*dashboard_port, "Dashboard"),
            ];

            let mut busy: Vec<(u16, &str, String)> = Vec::new();
            for (port, label) in &ports_to_check {
                if TcpListener::bind(format!("0.0.0.0:{}", port)).is_err() {
                    // Try to find the PID using lsof
                    let pid_info = std::process::Command::new("lsof")
                        .args(["-ti", &format!("tcp:{}", port)])
                        .output()
                        .ok()
                        .and_then(|o| {
                            let s = String::from_utf8_lossy(&o.stdout).trim().to_string();
                            if s.is_empty() { None } else { Some(s) }
                        })
                        .unwrap_or_else(|| "unknown".to_string());
                    busy.push((*port, label, pid_info));
                }
            }

            if !busy.is_empty() {
                println!();
                warn!("⚠️  Port conflict detected! The following ports are already in use:");
                println!();
                for (port, label, pids) in &busy {
                    println!("   :{:<5}  {}  (PID: {})", port, label, pids);
                }
                println!();
                print!("   Kill these processes and continue? [y/N] ");
                let _ = std::io::stdout().flush();

                let mut input = String::new();
                if std::io::stdin().read_line(&mut input).is_ok() {
                    let answer = input.trim().to_lowercase();
                    if answer == "y" || answer == "yes" {
                        for (port, label, pids) in &busy {
                            for pid in pids.split('\n') {
                                let pid = pid.trim();
                                if !pid.is_empty() && pid != "unknown" {
                                    info!("   Killing PID {} (:{} {})", pid, port, label);
                                    let _ = std::process::Command::new("kill")
                                        .args(["-9", pid])
                                        .status();
                                }
                            }
                        }
                        // Brief pause to let the OS release the sockets
                        std::thread::sleep(std::time::Duration::from_millis(500));
                        info!("   Ports freed. Continuing startup…");
                        println!();
                    } else {
                        warn!("Aborting. Free the ports above and try again.");
                        return;
                    }
                }
            }

            info!("🟢 Pulse dev server starting...");
            info!("   Dashboard:  http://localhost:{}", dashboard_port);
            info!("   Relay (QUIC/UDP):  localhost:{}", relay_port);
            info!("   Relay (WS/TCP):    ws://localhost:{}", relay_port);
            info!("   Control Plane API: http://localhost:4002");
            info!("   Watching for changes...");

            let current_exe = std::env::current_exe().unwrap_or_else(|_| std::path::PathBuf::from("pulse"));
            let dir = current_exe.parent().unwrap_or(Path::new("."));
            
            let control_bin = dir.join(if cfg!(windows) { "pulse-control.exe" } else { "pulse-control" });
            let relay_bin = dir.join(if cfg!(windows) { "pulse-relay.exe" } else { "pulse-relay" });

            // Check for a Cargo workspace — search from the binary's parent directory, NOT
            // the user's current working directory (which may be a JS/TS project).
            let is_cargo = {
                let mut search_dir = dir.to_path_buf();
                let mut found = false;
                for _ in 0..5 {
                    let cargo_path = search_dir.join("Cargo.toml");
                    if cargo_path.exists() {
                        if let Ok(content) = std::fs::read_to_string(&cargo_path) {
                            if content.contains("pulse-relay") {
                                found = true;
                                break;
                            }
                        }
                    }
                    let relay_path = search_dir.join("pulse-relay/Cargo.toml");
                    if relay_path.exists() {
                        found = true;
                        break;
                    }
                    if let Some(parent) = search_dir.parent() {
                        search_dir = parent.to_path_buf();
                    } else {
                        break;
                    }
                }
                found
            };

            let mut control = if control_bin.exists() {
                let mut c = Command::new(&control_bin);
                c.env("PULSE_DEV_MODE", "1");
                c
            } else if is_cargo {
                let mut c = Command::new("cargo");
                c.args(["run", "-p", "pulse-control"]);
                c.env("PULSE_DEV_MODE", "1");
                c
            } else {
                // Try PATH last; if it fails, spawn will error gracefully below
                let mut c = Command::new("pulse-control");
                c.env("PULSE_DEV_MODE", "1");
                c
            };

            let mut relay = if relay_bin.exists() {
                let mut c = Command::new(&relay_bin);
                c.args([
                    "--bind", &format!("0.0.0.0:{}", relay_port),
                    "--public-endpoint", &format!("localhost:{}", relay_port),
                    "--control-url", "http://localhost:4002",
                ]);
                c
            } else if is_cargo {
                let mut c = Command::new("cargo");
                c.args([
                    "run",
                    "-p",
                    "pulse-relay",
                    "--",
                    "--bind",
                    &format!("0.0.0.0:{}", relay_port),
                    "--public-endpoint",
                    &format!("localhost:{}", relay_port),
                    "--control-url",
                    "http://localhost:4002",
                ]);
                c
            } else {
                let mut c = Command::new("pulse-relay");
                c.args([
                    "--bind", &format!("0.0.0.0:{}", relay_port),
                    "--public-endpoint", &format!("localhost:{}", relay_port),
                    "--control-url", "http://localhost:4002",
                ]);
                c
            };

            control.stdout(Stdio::inherit())
                .stderr(Stdio::inherit())
                .stdin(Stdio::null())
                .kill_on_drop(true);
                
            relay.stdout(Stdio::inherit())
                .stderr(Stdio::inherit())
                .stdin(Stdio::null())
                .kill_on_drop(true);

            let mut control_child = match control.spawn() {
                Ok(c) => c,
                Err(e) => {
                    warn!("Failed to spawn pulse-control: {e}");
                    return;
                }
            };

            let mut relay_child = match relay.spawn() {
                Ok(c) => c,
                Err(e) => {
                    warn!("Failed to spawn pulse-relay: {e}");
                    let _ = control_child.kill().await;
                    return;
                }
            };

            // Best-effort dashboard (pulse-console).
            // Search in multiple locations:
            // 1. Relative to CWD (e.g. running from repo root)
            // 2. Relative to binary location (e.g. installed via npm)
            // 3. Sibling directory to CWD
            let console_candidates = vec![
                PathBuf::from("pulse-console"),
                std::env::current_exe()
                    .unwrap_or_default()
                    .parent()
                    .unwrap_or(Path::new("."))
                    .join("../pulse-console"),
                std::env::current_exe()
                    .unwrap_or_default()
                    .parent()
                    .unwrap_or(Path::new("."))
                    .join("../../pulse-console"),
            ];
            let console_dir = console_candidates.iter().find(|p| p.join("package.json").exists());

            let mut dashboard_child = if let Some(console_path) = console_dir {
                info!("   Dashboard found at: {}", console_path.display());
                let mut dashboard = Command::new("npm");
                dashboard
                    .current_dir(console_path)
                    .args([
                        "run",
                        "dev",
                        "--",
                        "--port",
                        &dashboard_port.to_string(),
                        "--host",
                        "0.0.0.0",
                    ])
                    .stdout(Stdio::inherit())
                    .stderr(Stdio::inherit())
                    .stdin(Stdio::null())
                    .kill_on_drop(true);

                match dashboard.spawn() {
                    Ok(c) => Some(c),
                    Err(e) => {
                        warn!("Failed to spawn pulse-console dashboard: {e}");
                        None
                    }
                }
            } else {
                // Console not found locally — download and run via npx
                info!("   Dashboard: downloading @sansavision/pulse-console...");
                let mut dashboard = Command::new("npx");
                dashboard
                    .args([
                        "-y",
                        "@sansavision/pulse-console",
                        "--port",
                        &dashboard_port.to_string(),
                        "--host",
                        "0.0.0.0",
                    ])
                    .stdout(Stdio::inherit())
                    .stderr(Stdio::inherit())
                    .stdin(Stdio::null())
                    .kill_on_drop(true);

                match dashboard.spawn() {
                    Ok(c) => Some(c),
                    Err(e) => {
                        warn!("Failed to download pulse-console via npx: {e}");
                        info!("   Tip: Install Node.js/npm, or visit https://console.sansavision.com");
                        None
                    }
                }
            };

            let _ = tokio::signal::ctrl_c().await;
            warn!("Shutting down dev server (terminating child processes)...");

            if let Some(child) = dashboard_child.as_mut() {
                let _ = child.kill().await;
            }
            let _ = relay_child.kill().await;
            let _ = control_child.kill().await;
        }
        Commands::Init { name, template } => {
            let tpl = template.clone().unwrap_or_else(|| "default".to_string());
            info!(
                "Scaffolding new Pulse project '{}' using template '{}'",
                name, tpl
            );

            let project_dir = Path::new(name);
            if project_dir.exists() {
                warn!("Directory '{}' already exists. Aborting.", name);
                return;
            }

            // Create project directory structure.
            let src_dir = project_dir.join("src");
            if let Err(e) = std::fs::create_dir_all(&src_dir) {
                warn!("Failed to create project directory: {}", e);
                return;
            }

            // Cargo.toml
            let cargo_toml = format!(
                r#"[package]
name = "{name}"
version = "0.1.0"
edition = "2021"

[dependencies]
pulse-sdk = {{ version = "0.1", path = "../pulse-sdk" }}
tokio = {{ version = "1", features = ["full"] }}
anyhow = "1"
tracing = "0.1"
tracing-subscriber = "0.3"
"#,
                name = name
            );
            if let Err(e) = std::fs::write(project_dir.join("Cargo.toml"), &cargo_toml) {
                warn!("Failed to write Cargo.toml: {}", e);
                return;
            }

            // src/main.rs based on template
            let main_rs = match tpl.as_str() {
                "data-channel" => format!(
                    r#"use anyhow::Result;
use pulse_sdk::PulseClient;
use tracing::info;

#[tokio::main]
async fn main() -> Result<()> {{
    tracing_subscriber::fmt::init();

    let client = PulseClient::connect_insecure_dev("127.0.0.1:4001".parse()?)?;
    let mut session = client.connect_and_handshake("dev-token").await?;

    info!("Connected! Session ID: {{}}", session.session_id());

    // Open a data stream and send some messages.
    let mut stream = session
        .open_data_stream_handle(pulse_sdk::pulse_core::control::Reliability::Full, 0)
        .await?;

    stream.send(b"Hello from {name}!").await?;
    info!("Sent data on stream {{}}", stream.stream_id());

    stream.close().await?;
    info!("Stream closed. Done!");

    Ok(())
}}
"#,
                    name = name
                ),
                _ => format!(
                    r#"use anyhow::Result;
use pulse_sdk::PulseClient;
use tracing::info;

#[tokio::main]
async fn main() -> Result<()> {{
    tracing_subscriber::fmt::init();

    // Connect to your local Pulse relay (start with `pulse dev`).
    let client = PulseClient::connect_insecure_dev("127.0.0.1:4001".parse()?)?;
    let mut session = client.connect_and_handshake("dev-token").await?;

    info!("Connected! Session ID: {{}}", session.session_id());

    // Your real-time app logic goes here.
    // See docs at: https://docs.pulse.dev/quickstart

    info!("{name} is running. Press Ctrl+C to stop.");
    tokio::signal::ctrl_c().await?;

    Ok(())
}}
"#,
                    name = name
                ),
            };
            if let Err(e) = std::fs::write(src_dir.join("main.rs"), &main_rs) {
                warn!("Failed to write src/main.rs: {}", e);
                return;
            }

            // README.md
            let readme = format!(
                "# {name}\n\nA real-time application powered by [Pulse](https://pulse.dev).\n\n## Quick start\n\n```bash\n# Start the dev server (relay + control plane + dashboard)\npulse dev\n\n# In another terminal, run your app\ncargo run\n```\n\nTemplate: `{tpl}`\n",
                name = name,
                tpl = tpl
            );
            if let Err(e) = std::fs::write(project_dir.join("README.md"), &readme) {
                warn!("Failed to write README.md: {}", e);
                return;
            }

            info!("✅ Project '{}' created successfully!", name);
            info!("   cd {} && cargo run", name);
        }
        Commands::Inspect {
            session_id,
            control_url,
        } => {
            info!("Inspecting session {} via {}", session_id, control_url);

            let url = format!("{}/api/v1/sessions/{}", control_url, session_id);
            let client = reqwest::Client::new();

            match client.get(&url).send().await {
                Ok(resp) => {
                    let status = resp.status();
                    match resp.json::<serde_json::Value>().await {
                        Ok(body) => {
                            if status.is_success() {
                                println!("\n━━━ Session Inspector ━━━━━━━━━━━━━━━━━━━━━━━━━━");
                                if let Some(id) = body.get("id") {
                                    println!("  ID:             {}", id);
                                }
                                if let Some(ep) = body.get("relay_endpoint") {
                                    println!("  Relay:          {}", ep);
                                }
                                if let Some(st) = body.get("status") {
                                    println!("  Status:         {}", st);
                                }
                                if let Some(ts) = body.get("created_at").and_then(|v| v.as_u64()) {
                                    println!("  Created:        {}ms since epoch", ts);
                                }
                                if let Some(lat) = body.get("client_lat") {
                                    if let Some(lon) = body.get("client_lon") {
                                        println!("  Client geo:     ({}, {})", lat, lon);
                                    }
                                }
                                if let Some(lm) =
                                    body.get("last_metrics_at").and_then(|v| v.as_u64())
                                {
                                    println!("  Last metrics:   {}ms since epoch", lm);
                                } else {
                                    println!("  Last metrics:   (none yet)");
                                }
                                println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");
                            } else if status == reqwest::StatusCode::NOT_FOUND {
                                warn!("Session '{}' not found on control plane.", session_id);
                            } else {
                                warn!("Control plane returned {}: {:?}", status, body);
                            }
                        }
                        Err(e) => warn!("Failed to parse response: {}", e),
                    }
                }
                Err(e) => {
                    warn!("Failed to reach control plane at {}: {}", control_url, e);
                    warn!("Is the control plane running? Start it with: pulse dev");
                }
            }
        }
        Commands::Metrics { control_url } => {
            info!("Fetching cluster metrics from {}", control_url);

            let url = format!("{}/api/v1/internal/dashboard", control_url);
            let client = reqwest::Client::new();

            match client.get(&url).send().await {
                Ok(resp) => match resp.json::<serde_json::Value>().await {
                    Ok(body) => {
                        println!("\n━━━ Pulse Cluster Metrics ━━━━━━━━━━━━━━━━━━━━━");
                        if let Some(s) = body.get("active_sessions") {
                            println!("  Active sessions:      {}", s);
                        }
                        if let Some(bw) = body.get("total_bandwidth_mbps") {
                            println!("  Total bandwidth:      {} Mbps", bw);
                        }
                        if let Some(rtt) = body.get("avg_rtt_ms") {
                            println!("  Average RTT:          {} ms", rtt);
                        }
                        println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");
                    }
                    Err(e) => warn!("Failed to parse response: {}", e),
                },
                Err(e) => {
                    warn!("Failed to reach control plane at {}: {}", control_url, e);
                    warn!("Is the control plane running? Start it with: pulse dev");
                }
            }
        }
        Commands::Simulate {
            loss,
            latency,
            jitter,
        } => {
            info!("Starting Pulse network simulator (Chaos Proxy)");
            let loss_pct = loss.trim_end_matches('%').parse::<f64>().unwrap_or(0.0) / 100.0;
            let lat_ms = latency.trim_end_matches("ms").parse::<u64>().unwrap_or(0);
            let jit_ms = jitter.trim_end_matches("ms").parse::<u64>().unwrap_or(0);

            info!("  Binding: 127.0.0.1:4002 -> 127.0.0.1:4001");
            info!("  Loss:    {:.1}%", loss_pct * 100.0);
            info!("  Latency: {}ms", lat_ms);
            info!("  Jitter:  {}ms", jit_ms);

            let socket = match tokio::net::UdpSocket::bind("127.0.0.1:4002").await {
                Ok(s) => std::sync::Arc::new(s),
                Err(e) => {
                    warn!("Failed to bind simulator socket: {}", e);
                    return;
                }
            };

            let relay_addr: std::net::SocketAddr = "127.0.0.1:4001".parse().unwrap();
            let mut buf = [0u8; 65535];

            // Map client addresses to their last seen time to keep them "active"
            // For a simple chaos proxy, we just recv and then spawn a task to delay/drop and forward.
            info!("Simulator running. Point your client to 127.0.0.1:4002 instead of 4001.");

            let last_client =
                std::sync::Arc::new(tokio::sync::RwLock::new(None::<std::net::SocketAddr>));

            loop {
                tokio::select! {
                    res = socket.recv_from(&mut buf) => {
                        match res {
                            Ok((size, peer)) => {
                                // Decide if we drop it
                                if loss_pct > 0.0 && rand::random::<f64>() < loss_pct {
                                    continue; // Drop packet
                                }

                                // Calculate delay
                                let mut delay = lat_ms;
                                if jit_ms > 0 {
                                    let rand_val = rand::random::<u64>();
                                    // Map to -jit_ms .. +jit_ms
                                    let range = (jit_ms * 2) + 1;
                                    let j = (rand_val % range) as i64 - jit_ms as i64;
                                    delay = (delay as i64 + j).max(0) as u64;
                                }

                                let payload = buf[..size].to_vec();
                                let sock = socket.clone();
                                let client_ref = last_client.clone();

                                // Forwarding task
                                tokio::spawn(async move {
                                    if delay > 0 {
                                        tokio::time::sleep(std::time::Duration::from_millis(delay)).await;
                                    }

                                    if peer == relay_addr {
                                        let c = client_ref.read().await;
                                        if let Some(target) = *c {
                                            let _ = sock.send_to(&payload, target).await;
                                        }
                                    } else {
                                        let mut c = client_ref.write().await;
                                        *c = Some(peer);
                                        let _ = sock.send_to(&payload, relay_addr).await;
                                    }
                                });
                            }
                            Err(e) => {
                                warn!("Simulator recv error: {}", e);
                            }
                        }
                    }
                    _ = tokio::signal::ctrl_c() => {
                        info!("Shutting down simulator...");
                        break;
                    }
                }
            }
        }
        Commands::Record {
            session_id,
            duration,
            output,
        } => {
            let out_file = output.clone().unwrap_or_default();
            if let Some(d) = duration {
                info!("Recording session {} to {} for {}", session_id, out_file, d);
            } else {
                info!("Recording session {} to {}", session_id, out_file);
            }
        }
        Commands::Replay { file_path, speed } => {
            info!(
                "Replaying {} at {}x speed",
                file_path,
                speed.clone().unwrap_or_else(|| "1".to_string())
            );
        }
        Commands::Migrate(args) => match &args.command {
            MigrateCommand::Analyse(a) => migrate::run_analyse(&a),
            MigrateCommand::Generate(g) => migrate::run_generate(&g),
            MigrateCommand::Diff(d) => migrate::run_diff(&d),
            MigrateCommand::Wizard => migrate::run_wizard(),
        },
        Commands::Schema { cmd } => match cmd {
            SchemaCommands::Check { file, format } => {
                let source = match std::fs::read_to_string(file) {
                    Ok(s) => s,
                    Err(e) => {
                        if format == "json" {
                            println!(r#"[{{ "message": "Failed to read file", "start_offset": 0, "end_offset": 0 }}]"#);
                        } else {
                            warn!("Failed to read schema file '{}': {}", file, e);
                        }
                        return;
                    }
                };
                
                let parsed = match pulse_idl::parser::parse(&source) {
                    Ok(s) => s,
                    Err(e) => {
                        if format == "json" {
                            println!(r#"[{{ "message": "Parse error: {}" }}]"#, e.to_string().replace("\"", "\\\""));
                        } else {
                            warn!("Parse error: {}", e);
                        }
                        return;
                    }
                };
                
                if let Err(errs) = parsed.validate() {
                    if format == "json" {
                        let json_errs: Vec<String> = errs.iter().map(|e| {
                            let msg = e.to_string().replace("\"", "\\\"");
                            format!(r#"{{ "message": "{}" }}"#, msg)
                        }).collect();
                        println!("[{}]", json_errs.join(", "));
                    } else {
                        for err in &errs {
                            warn!("Validation error: {}", err);
                        }
                        println!("Schema check failed with {} errors.", errs.len());
                    }
                    std::process::exit(1);
                }
                
                if format == "json" {
                    println!("[]");
                } else {
                    info!("✅ Schema is valid!");
                }
            },
            SchemaCommands::Compile { file, lang, output } => {
                let source = match std::fs::read_to_string(file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read schema file '{}': {}", file, e);
                        return;
                    }
                };

                let parsed = match pulse_idl::parser::parse(&source) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Parse error: {}", e);
                        return;
                    }
                };

                if let Err(errs) = parsed.validate() {
                    for err in &errs {
                        warn!("Validation error: {}", err);
                    }
                    return;
                }

                let out_dir = std::path::Path::new(output);
                if let Err(e) = std::fs::create_dir_all(out_dir) {
                    warn!("Failed to create output directory: {}", e);
                    return;
                }

                let langs: Vec<&str> = lang.split(',').map(|s| s.trim()).collect();
                let schema_stem = std::path::Path::new(file)
                    .file_stem()
                    .and_then(|s| s.to_str())
                    .unwrap_or("schema");

                for target in &langs {
                    let (code, ext) = match *target {
                        "rust" => (pulse_idl::codegen_rust::generate(&parsed), "rs"),
                        "ts" | "typescript" => (pulse_idl::codegen_ts::generate(&parsed), "ts"),
                        "go" => (pulse_idl::codegen_go::generate(&parsed), "go"),
                        "swift" => (pulse_idl::codegen_swift::generate(&parsed), "swift"),
                        "kotlin" | "kt" => (pulse_idl::codegen_kotlin::generate(&parsed), "kt"),
                        "python" | "py" => (pulse_idl::codegen_python::generate(&parsed), "py"),
                        "csharp" | "cs" => (pulse_idl::codegen_csharp::generate(&parsed), "cs"),
                        "rn" | "react-native" => (pulse_idl::codegen_rn::generate(&parsed), "ts"),
                        "docs" | "md" => (pulse_idl::codegen_docs::generate(&parsed), "md"),
                        unknown => {
                            warn!("Unknown language target: '{}'", unknown);
                            continue;
                        }
                    };

                    let out_path = out_dir.join(format!("{}.{}", schema_stem, ext));
                    if let Err(e) = std::fs::write(&out_path, code) {
                        warn!("Failed to write generated {}: {}", target, e);
                    } else {
                        info!("✅ Generated {}", out_path.display());
                    }
                }
                info!("Code generation complete.");
            },
            SchemaCommands::Docs { file, output } => {
                let source = match std::fs::read_to_string(file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read schema file '{}': {}", file, e);
                        return;
                    }
                };
                let parsed = pulse_idl::parser::parse(&source).expect("Parse error");
                let code = pulse_idl::codegen_docs::generate(&parsed);
                
                let out_dir = std::path::Path::new(output);
                std::fs::create_dir_all(out_dir).unwrap();
                let schema_stem = std::path::Path::new(file)
                    .file_stem()
                    .and_then(|s| s.to_str())
                    .unwrap_or("docs");
                    
                let out_path = out_dir.join(format!("{}.md", schema_stem));
                std::fs::write(&out_path, code).unwrap();
                info!("✅ Generated docs at {}", out_path.display());
            },
            SchemaCommands::Init { dir } => {
                let out_dir = std::path::Path::new(dir);
                std::fs::create_dir_all(out_dir).unwrap();
                let content = r#"/// Example Pulse API
service HelloWorld {
  /// Say hello
  rpc SayHello(HelloRequest) -> HelloResponse;
}

type HelloRequest {
  name: string;
}

type HelloResponse {
  reply: string;
}
"#;
                std::fs::write(out_dir.join("schema.psl"), content).unwrap();
                info!("✅ Initialized new PSL schema project at {}", out_dir.display());
            },
            SchemaCommands::Diff { old_file, new_file } => {
                info!("Comparing {} with {}", old_file, new_file);
                
                // Read and parse old schema
                let old_source = match std::fs::read_to_string(old_file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read old schema '{}': {}", old_file, e);
                        return;
                    }
                };
                let old_parsed = match pulse_idl::parser::parse(&old_source) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Parse error in old schema: {}", e);
                        return;
                    }
                };
                
                // Read and parse new schema
                let new_source = match std::fs::read_to_string(new_file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read new schema '{}': {}", new_file, e);
                        return;
                    }
                };
                let new_parsed = match pulse_idl::parser::parse(&new_source) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Parse error in new schema: {}", e);
                        return;
                    }
                };
                
                let old_resolved = pulse_idl::imports::ResolvedSchema {
                    root_package: None,
                    items: old_parsed.items.clone(),
                };
                let new_resolved = pulse_idl::imports::ResolvedSchema {
                    root_package: None,
                    items: new_parsed.items.clone(),
                };
                
                let plan = pulse_idl::migrate::diff(&old_resolved, &new_resolved);
                
                if plan.ops.is_empty() {
                    info!("✅ No schema changes detected.");
                    return;
                }
                
                let mut has_breaking = false;
                
                info!("Schema changes ({} operations):", plan.ops.len());
                for op in &plan.ops {
                    match op {
                        pulse_idl::migrate::MigrationOp::AddCollection(c) => {
                            info!("  ✅ [non-breaking] Add collection: {}", c);
                        },
                        pulse_idl::migrate::MigrationOp::DropCollection(c) => {
                            warn!("  ❌ [BREAKING] Drop collection: {}", c);
                            has_breaking = true;
                        },
                        pulse_idl::migrate::MigrationOp::AddField { collection, field, ty } => {
                            info!("  ✅ [non-breaking] Add field: {}.{} ({})", collection, field, ty);
                        },
                        pulse_idl::migrate::MigrationOp::RemoveField { collection, field } => {
                            warn!("  ❌ [BREAKING] Remove field: {}.{}", collection, field);
                            has_breaking = true;
                        },
                        pulse_idl::migrate::MigrationOp::AddIndex { collection, index_name, .. } => {
                            info!("  ✅ [non-breaking] Add index: {}.{}", collection, index_name);
                        },
                        pulse_idl::migrate::MigrationOp::DropIndex { collection, index_name } => {
                            warn!("  ⚠️  [BREAKING] Drop index: {}.{}", collection, index_name);
                            has_breaking = true;
                        },
                    }
                }
                
                if !plan.warnings.is_empty() {
                    info!("");
                    for w in &plan.warnings {
                        warn!("⚠️  {}", w);
                    }
                }
                
                if !plan.errors.is_empty() {
                    info!("");
                    for e in &plan.errors {
                        warn!("❌ {}", e);
                    }
                    has_breaking = true;
                }
                
                info!("");
                if has_breaking {
                    warn!("❌ Breaking changes detected. This diff contains changes that may break existing clients.");
                    std::process::exit(1);
                } else {
                    info!("✅ All changes are non-breaking. Safe to apply.");
                }
            },
            SchemaCommands::Push { file, db, dry_run, force } => {
                let source = match std::fs::read_to_string(file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read schema file '{}': {}", file, e);
                        return;
                    }
                };
                
                let parsed = match pulse_idl::parser::parse(&source) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Parse error: {}", e);
                        return;
                    }
                };
                
                let resolved = pulse_idl::imports::ResolvedSchema {
                    root_package: None,
                    items: parsed.items.clone(),
                };
                
                if let Err(errs) = pulse_idl::validate::validate_resolved(&resolved) {
                    for err in &errs {
                        warn!("Validation error: {}", err.message);
                    }
                    warn!("Cannot push invalid schema.");
                    return;
                }

                info!("Connecting to SansaDB at {}...", db);
                // Mock pulling the previous schema
                let mock_old = pulse_idl::imports::ResolvedSchema {
                    root_package: None,
                    items: vec![],
                };
                
                let plan = pulse_idl::migrate::diff(&mock_old, &resolved);
                
                if plan.ops.is_empty() {
                    info!("Schema is already up-to-date.");
                    return;
                }
                
                info!("Migration Plan:");
                for op in &plan.ops {
                    match op {
                        pulse_idl::migrate::MigrationOp::AddCollection(c) => info!("  + Add Collection: {}", c),
                        pulse_idl::migrate::MigrationOp::DropCollection(c) => info!("  - Drop Collection: {}", c),
                        pulse_idl::migrate::MigrationOp::AddField { collection, field, ty } => info!("  + Add Field: {}.{} ({})", collection, field, ty),
                        pulse_idl::migrate::MigrationOp::RemoveField { collection, field } => info!("  - Remove Field: {}.{}", collection, field),
                        pulse_idl::migrate::MigrationOp::AddIndex { collection, index_name, .. } => info!("  + Add Index: {}.{}", collection, index_name),
                        pulse_idl::migrate::MigrationOp::DropIndex { collection, index_name } => info!("  - Drop Index: {}.{}", collection, index_name),
                    }
                }
                
                for warn in &plan.warnings {
                    warn!("Warning: {}", warn);
                }
                
                for err in &plan.errors {
                    warn!("Error: {}", err);
                }
                
                if !plan.errors.is_empty() && !force {
                    warn!("Migration contains errors or breaking changes. Use --force to apply anyway.");
                    return;
                }
                
                if *dry_run {
                    info!("Dry run complete. No changes applied.");
                    return;
                }
                
                info!("Applying migration to SansaDB...");
                // Here we would send the operations to the SansaDB gateway
                info!("✅ Schema successfully pushed to {}", db);
            }
        SchemaCommands::FromProto { file, emit_psl, lang, output } => {
                let source = match std::fs::read_to_string(file) {
                    Ok(s) => s,
                    Err(e) => {
                        warn!("Failed to read proto file '{}': {}", file, e);
                        return;
                    }
                };

                let result = match pulse_idl::proto_import::import_proto(&source) {
                    Ok(r) => r,
                    Err(e) => {
                        warn!("Proto import error: {}", e);
                        return;
                    }
                };

                for w in &result.warnings {
                    warn!("⚠️  {}", w);
                }

                let schema = &result.schema;
                let out_dir = std::path::Path::new(output.as_str());
                std::fs::create_dir_all(out_dir).unwrap();

                let schema_stem = std::path::Path::new(file)
                    .file_stem()
                    .and_then(|s| s.to_str())
                    .unwrap_or("schema");

                // Emit .psl file
                if *emit_psl {
                    let psl = pulse_idl::proto_import::schema_to_psl(schema);
                    let psl_path = out_dir.join(format!("{}.psl", schema_stem));
                    std::fs::write(&psl_path, &psl).unwrap();
                    info!("✅ Converted {} → {}", file, psl_path.display());
                }

                // Optionally generate typed stubs directly
                if let Some(langs) = lang {
                    let targets: Vec<&str> = langs.split(',').map(|s| s.trim()).collect();
                    for target in &targets {
                        let (code, ext) = match *target {
                            "rust" => (pulse_idl::codegen_rust::generate(schema), "rs"),
                            "ts" | "typescript" => (pulse_idl::codegen_ts::generate(schema), "ts"),
                            "go" => (pulse_idl::codegen_go::generate(schema), "go"),
                            "swift" => (pulse_idl::codegen_swift::generate(schema), "swift"),
                            "kotlin" | "kt" => (pulse_idl::codegen_kotlin::generate(schema), "kt"),
                            "python" | "py" => (pulse_idl::codegen_python::generate(schema), "py"),
                            "csharp" | "cs" => (pulse_idl::codegen_csharp::generate(schema), "cs"),
                            "rn" | "react-native" => (pulse_idl::codegen_rn::generate(schema), "ts"),
                            "docs" | "md" => (pulse_idl::codegen_docs::generate(schema), "md"),
                            unknown => {
                                warn!("Unknown language target: '{}'", unknown);
                                continue;
                            }
                        };
                        let out_path = out_dir.join(format!("{}.{}", schema_stem, ext));
                        std::fs::write(&out_path, code).unwrap();
                        info!("✅ Generated {}", out_path.display());
                    }
                }

                info!("Proto import complete.");
            },
        SchemaCommands::Extract { file, out } => {
            info!("Extracting {} into {}...", file, out);
            let temp_script = format!(
                "const path = require('path');\n\
                 const m = require(path.resolve('{}'));\n\
                 let PulseCompiler;\n\
                 try {{\n\
                     PulseCompiler = require(path.resolve(path.dirname('{}'), 'node_modules/@pulse/schema/dist/compiler')).PulseCompiler;\n\
                 }} catch (e) {{\n\
                     try {{\n\
                         PulseCompiler = require('@pulse/schema/dist/compiler').PulseCompiler;\n\
                     }} catch(e2) {{\n\
                         PulseCompiler = require('./pulse-schema-ts/dist/compiler').PulseCompiler;\n\
                     }}\n\
                 }}\n\
                 const compiler = new PulseCompiler(m.default);\n\
                 require('fs').writeFileSync(path.resolve('{}'), compiler.compile());",
                 file, file, out
            );
            std::fs::write("extract.temp.js", temp_script).unwrap();
            let status = std::process::Command::new("node")
                .arg("extract.temp.js")
                .status();
            
            let _ = std::fs::remove_file("extract.temp.js");

            match status {
                Ok(s) if s.success() => info!("✅ Extracted PSL schema to {}", out),
                _ => warn!("Failed to extract schema from TS file."),
            }
        },
    }
    }
}