1  const { ethers } = require("hardhat");
 2  const fs = require("fs");
 3  const path = require("path");
 4  
 5  async function main() {
 6    const [deployer] = await ethers.getSigners();
 7    console.log("Deploying contract with account:", deployer.address);
 8  
 9    const OrderBook = await ethers.getContractFactory("OrderBook");
10    const orderBook = await OrderBook.deploy();
11    await orderBook.waitForDeployment();
12  
13    const deployedAddress = await orderBook.getAddress();
14    console.log("OrderBook deployed to:", deployedAddress);
15  
16    const filePath = path.join(__dirname, "../../dapp/src/contract-address.json");
17    fs.writeFileSync(filePath, JSON.stringify({ address: deployedAddress }, null, 2));
18    console.log("Wrote contract address to", filePath);
19  
20    console.log("Seeding sample orders...");
21  
22    const prices = {
23      0: 204.07, // AAPL
24      1: 269.26, // TSLA
25      2: 858.36  // NVDA
26    };
27  
28    const priceWei = (price) => ethers.parseUnits(price.toFixed(2).toString(), 18); // Round to 2 decimals
29  
30    for (let securityId = 0; securityId < 3; securityId++) {
31      const basePrice = prices[securityId];
32  
33      // ±1% for quantity 5
34      let tx = await orderBook.seedOrder(
35        deployedAddress,
36        securityId,
37        true, // Buy
38        priceWei(basePrice * 0.99), // -1%
39        5
40      );
41      await tx.wait();
42  
43      tx = await orderBook.seedOrder(
44        deployedAddress,
45        securityId,
46        false, // Sell
47        priceWei(basePrice * 1.01), // +1%
48        5
49      );
50      await tx.wait();
51  
52      // ±2% for quantity 20
53      tx = await orderBook.seedOrder(
54        deployedAddress,
55        securityId,
56        true, // Buy
57        priceWei(basePrice * 0.98), // -2%
58        20
59      );
60      await tx.wait();
61  
62      tx = await orderBook.seedOrder(
63        deployedAddress,
64        securityId,
65        false, // Sell
66        priceWei(basePrice * 1.02), // +2%
67        20
68      );
69      await tx.wait();
70  
71      console.log(`Seeded orders for security ${securityId}`);
72    }
73  
74    console.log("Sample orders seeded successfully.");
75  }
76  
77  main().catch((error) => {
78    console.error(error);
79    process.exitCode = 1;
80  });