use wasm_bindgen::prelude::*;
use serde::{Deserialize, Serialize};

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = console)]
    fn log(s: &str);
}

#[derive(Serialize, Deserialize)]
pub struct WitnessProtocol {
    pub n1: usize,  // models
    pub n2: usize,  // size
    pub n3: usize,  // rounds
    pub n4: usize,  // rotations
    pub final_value: u64,
}

#[derive(Serialize, Deserialize)]
pub struct Claim {
    pub claim: String,
    pub bet: String,
    pub proof: String,
    pub terms: String,
    pub vars: String,
    pub preconditions: String,
    pub postconditions: String,
    pub invariants: String,
}

#[wasm_bindgen]
pub struct LMFDBWitness {
    protocol: WitnessProtocol,
    claims: Vec<Claim>,
}

#[wasm_bindgen]
impl LMFDBWitness {
    #[wasm_bindgen(constructor)]
    pub fn new() -> Self {
        log("LMFDB Witness Protocol initialized");
        
        Self {
            protocol: WitnessProtocol {
                n1: 24,
                n2: 7,
                n3: 71,
                n4: 17,
                final_value: 14,
            },
            claims: Vec::new(),
        }
    }
    
    #[wasm_bindgen]
    pub fn add_claim(&mut self, claim: JsValue) -> Result<(), JsValue> {
        let claim: Claim = serde_wasm_bindgen::from_value(claim)?;
        self.claims.push(claim);
        Ok(())
    }
    
    #[wasm_bindgen]
    pub fn get_protocol(&self) -> JsValue {
        serde_wasm_bindgen::to_value(&self.protocol).unwrap()
    }
    
    #[wasm_bindgen]
    pub fn get_claims(&self) -> JsValue {
        serde_wasm_bindgen::to_value(&self.claims).unwrap()
    }
    
    #[wasm_bindgen]
    pub fn run_convergence(&self) -> String {
        format!(
            "N1={} models × N2={} size → N3={} rounds → N4={} rotations → Final={}",
            self.protocol.n1,
            self.protocol.n2,
            self.protocol.n3,
            self.protocol.n4,
            self.protocol.final_value
        )
    }
}

#[wasm_bindgen]
pub fn init() {
    log("LMFDB Witness WASM module loaded");
}