//! ternlang-net: Triadic Networking Stack for the BET VM.
//! 
//! Standard networking protocols (HTTP, TCP) are binary: Connected or Disconnected.
//! `ternlang-net` introduces the "Introspective Handshake," allowing a server to 
//! return a State 0 (TEND) status to a client while a MoE-13 security audit is processed.

pub mod protocol {
    #[derive(Debug, PartialEq, Clone, Copy)]
    pub enum ConnectionState {
        Established = 1,
        Handshaking = 0,
        Vetoed = -1,
    }

    pub struct TernarySocket {
        pub addr: String,
        pub state: ConnectionState,
    }

    impl TernarySocket {
        pub fn new(addr: &str) -> Self {
            TernarySocket {
                addr: addr.to_string(),
                state: ConnectionState::Handshaking,
            }
        }

        /// Executes a triadic handshake.
        /// Unlike binary TCP, this does not "timeout" or "reject" immediately.
        /// It stays in State 0 (TEND) until the BET VM clears the packet via 
        /// the hardware security audit opcode (TVETO/TLOCK).
        pub fn handshake(&mut self) -> ConnectionState {
            println!("tern-net: Initiating triadic handshake with {}...", self.addr);
            // Simulation of MoE-13 packet audit
            self.state = ConnectionState::Handshaking; 
            self.state
        }

        pub fn send_payload(&self, data: &str) -> Result<(), &'static str> {
            match self.state {
                ConnectionState::Established => {
                    println!("tern-net: Data sent securely: {}", data);
                    Ok(())
                }
                ConnectionState::Handshaking => {
                    Err("REJECTED: Socket in State 0 (Pending Audit). Payload suspended.")
                }
                ConnectionState::Vetoed => {
                    Err("VETO: Connection terminated by hardware security protocol.")
                }
            }
        }
    }
}
