//! Triadic Consensus (Proof-of-Ambiguity-Resolution)
//!
//! Replaces legacy PoW and PoS with a native triadic consensus algorithm 
//! for the RFI-IRFOS Compute Economy. Nodes reach agreement by deterministically 
//! resolving `Trit::Tend` states across the network, validating the T-Fi Ledger.

use ternlang_core::Trit;

pub struct TriadicLedger;

impl TriadicLedger {
    /// Validates a block on the T-Fi Ledger by achieving triadic consensus.
    pub fn validate_block(node_a: Trit, node_b: Trit, node_c: Trit) -> Trit {
        // Multi-valued logic consensus: Requires at least two Affirm states,
        // or defaults to Tend (Hold) to prevent chain forks.
        match (node_a, node_b, node_c) {
            (Trit::Affirm, Trit::Affirm, _) => Trit::Affirm,
            (_, Trit::Affirm, Trit::Affirm) => Trit::Affirm,
            (Trit::Affirm, _, Trit::Affirm) => Trit::Affirm,
            (Trit::Reject, Trit::Reject, _) => Trit::Reject,
            (_, Trit::Reject, Trit::Reject) => Trit::Reject,
            (Trit::Reject, _, Trit::Reject) => Trit::Reject,
            _ => Trit::Tend, // Consensus not reached, block held
        }
    }
}
