http_server.nula

// HTTP Server — an actor wrapping a TCP socket with HTTP request/response
// framing. Demonstrates actor state, message passing, and the connection
// lifecycle pattern.
//
// Run with: nulang examples/http_server.nula

actor HttpServer {
    state port: Int = 8080
    state running: Bool = false
    state request_count: Int = 0

    behavior start() {
        // Bind and begin accepting connections
        self.running = true
        self.request_count = 0
        perform IO.print("HTTP server listening on port " + perform Int.to_string(self.port))
    }

    behavior handle_request(method: String, path: String) {
        // Process an incoming request
        self.request_count = self.request_count + 1
        let response = if method == "GET" then
            "200 OK: " + path
        else
            "405 Method Not Allowed"
        in
        perform IO.print(response)
    }

    behavior stats() {
        perform IO.print(
            "Requests handled: " + perform Int.to_string(self.request_count)
        )
    }

    behavior stop() {
        self.running = false
        perform IO.print("Server stopped")
    }
}

fn main() {
    let server = spawn HttpServer {}
    server ! start()
    server ! handle_request("GET", "/index.html")
    server ! handle_request("GET", "/api/data")
    server ! handle_request("POST", "/api/data")
    server ! stats()
    server ! stop()
    0
}