order placement works, including automatic vault creation

src/blockchain/contract.js

@@ -1,20 +1,48 @@
 import {ethers} from "ethers";
-import {factoryAbi, queryHelperAbi} from "@/blockchain/abi.js";
+import {factoryAbi, queryHelperAbi, vaultAbi} from "@/blockchain/abi.js";
 import {useStore} from "@/store/store.js";
 import {provider} from "@/blockchain/wallet.js";
 
 
+export function vaultAddress( owner, num ) {
+    const s = useStore()
+    if( s.vaultInitCodeHash === null || s.factory === null )
+        return null
+    const abiCoder = ethers.AbiCoder.defaultAbiCoder();
+    console.log('vaultAddress owner', owner)
+    const salt = ethers.keccak256(abiCoder.encode(['address','uint8'],[owner,num]))
+    const result = ethers.getCreate2Address(s.factory, salt, s.vaultInitCodeHash)
+    console.log('vaultAddress', result, s.factory, salt, s.vaultInitCodeHash)
+    return result
+}
+
+
+function contractOrNull(addr,abi,provider) {
+    try {
+        return new ethers.Contract(addr,abi,provider)
+    }
+    catch (e) {
+        return null
+    }
+}
+
 export async function factoryContract() {
     const s = useStore()
-    return new ethers.Contract(s.helper, factoryAbi, provider)
+    return contractOrNull(s.factory, factoryAbi, provider)
 }
 
 export async function queryHelperContract() {
     const s = useStore()
-    return new ethers.Contract(s.helper, queryHelperAbi, provider)
+    return contractOrNull(s.helper, queryHelperAbi, provider)
 }
 
 export async function poolContract(addr) {
-    const s = useStore()
-    return new ethers.Contract(addr, poolAbi, provider)
+    return contractOrNull(addr, poolAbi, provider)
+}
+
+export async function vaultContract(num, signer) {
+    const s = useStore()
+    if( num >= s.vaults.length )
+        return null
+    return contractOrNull(s.vaults[num], vaultAbi, signer)
 }