// === ZALAGO JYW VENTURES - PHASE 2 P2P ENGINE ===
// BN012270123 - Genuine Business Logic

const ESCROW_WALLET = "TQrrXpYOUR_ESCROW_WALLEThereGrz"; // Your company wallet
const USDT_CONTRACT = "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"; // TRC20 USDT

// 1. SELL USDT - VERIFY REAL DEPOSIT BEFORE LISTING
async function verifyAndCreateSellAd(txid, amount, rate) {
  // Check if user did Ghana Card KYC
  const user = firebase.auth().currentUser;
  const profile = await db.collection("users").doc(user.uid).get();
  if (!profile.data().ghanaCardVerified) {
    alert("Boss, user must verify Ghana Card before SELL! Protect ZALAGO name!");
    return;
  }

  // Verify on TronScan - REAL CHECK
  const res = await fetch(`https://api.tronscan.org/api/transaction-info?hash=${txid}`);
  const data = await res.json();
  
  // Check: To is your escrow, amount is correct, success
  if (data.contractData && data.contractData.to_address === ESCROW_WALLET && data.confirmed) {
    
    // CREATE SELL AD - USDT LOCKED IN ESCROW
    await db.collection("p2p_ads").add({
      type: "SELL",
      sellerId: user.uid,
      sellerName: profile.data().fullName,
      amount: parseFloat(amount),
      rate: parseFloat(rate), // GHS per USDT
      amountLocked: parseFloat(amount), // Locked in your escrow wallet
      txid: txid,
      status: "ACTIVE", // Ready for buyers
      escrowWallet: ESCROW_WALLET,
      createdAt: firebase.firestore.FieldValue.serverTimestamp(),
      business: "ZALAGO JYW VENTURES"
    });
    alert("VERIFIED! Sell Ad LIVE! USDT locked in ZALAGO escrow.");
  } else {
    alert("TxID FAILED! Not sent to ZALAGO escrow wallet. Check again Boss!");
  }
}

// 2. BUY USDT - BUYER CLICKS BUY
async function buyUSDT(adId, adData) {
  // Lock the ad
  await db.collection("p2p_ads").doc(adId).update({ status: "IN_ESCROW" });
  
  // Create Trade - Escrow locked
  const trade = await db.collection("trades").add({
    adId: adId,
    buyerId: firebase.auth().currentUser.uid,
    sellerId: adData.sellerId,
    amountUSDT: adData.amount,
    amountGHS: adData.amount * adData.rate,
    rate: adData.rate,
    status: "WAITING_PAYMENT", // Buyer must pay MoMo
    escrowLocked: true,
    createdAt: firebase.firestore.FieldValue.serverTimestamp()
  });
  return trade.id;
}

// 3. RELEASE - AFTER MoMo PAYMENT CONFIRMED
async function releaseUSDT(tradeId) {
  // Only seller can release after confirming MoMo received
  await db.collection("trades").doc(tradeId).update({
    status: "COMPLETED",
    escrowLocked: false,
    releasedAt: firebase.firestore.FieldValue.serverTimestamp()
  });
  // HERE YOU SEND FROM ESCROW WALLET TO BUYER via Tron API (backend)
  alert("USDT Released from ZALAGO escrow to Buyer! Trade Complete! 2% fee to ZALAGO JYW VENTURES");
}

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