suppurt chainweb host

Author: javadkh2

README.md

@@ -85,19 +85,16 @@ contract CounterScript is ChainwebScript(5, 20) {
     Counter public counter;
 
     function run() public {
-        chainweb.switchChain(20);
-        console.log("Running script on chain:", block.chainid);
-        vm.startBroadcast();
-        Counter counter1 = new Counter();
-        counter1.setNumber(1);
-        vm.stopBroadcast();
-
-        chainweb.switchChain(21);
-        console.log("Running script on chain 2:", block.chainid);
-        vm.startBroadcast();
-        Counter counter2 = new Counter();
-        counter2.setNumber(2);
-        vm.stopBroadcast();
+        uint256[] memory chainIds = chainweb.getChainIds();
+        // loop over chains and deploy the contract
+        for (uint256 i = 0; i < chainIds.length; i++) {
+            chainweb.switchChain(chainIds[i]);
+            console.log("Running script on chain:", block.chainid);
+            vm.startBroadcast();
+            Counter counter1 = new Counter();
+            counter1.setNumber(1);
+            vm.stopBroadcast();
+        }
     }
 }
 ```
@@ -110,12 +107,22 @@ forge script --multi src/example/script/Counter.s.sol:CounterScript \
   --broadcast
 ```
 
+run script against testnet
+
+```bash
+CHAINWEB_HOST=https://evm-testnet.chainweb.com/chainweb/0.0/evm-testnet forge script --multi src/example/script/Counter.s.sol:CounterScript \
+  --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 \
+  --broadcast
+
 ### ChainID
 
 Since Chainweb is a network of multiple chains, the `chainid` in tests and scripts is computed as:
 
 ```
+
 chainid = chain_id + index
+
 ```
 
 You can configure the `chain_id` in your `foundry.toml` file. Each test or script chain will increment from this base value. The default value is `31337` in Foundry.
+```

src/Chainweb.sol

@@ -12,34 +12,18 @@ contract Chainweb is CommonBase {
     uint256 private _chainIdOffset;
     uint24 private _chainwebChainIdOffset;
     uint256[] private _chainForks;
+    string private _hostUrl;
 
     constructor(
         uint24 chainNumbers,
         uint256 chainIdOffset,
-        uint24 chainwebChainIdOffset
+        uint24 chainwebChainIdOffset,
+        string memory hostUrl
     ) {
         _chains = chainNumbers;
         _chainIdOffset = chainIdOffset;
         _chainwebChainIdOffset = chainwebChainIdOffset;
-    }
-
-    function uintToString(uint256 value) internal pure returns (string memory) {
-        if (value == 0) {
-            return "0";
-        }
-        uint256 temp = value;
-        uint256 digits;
-        while (temp != 0) {
-            digits++;
-            temp /= 10;
-        }
-        bytes memory buffer = new bytes(digits);
-        while (value != 0) {
-            digits -= 1;
-            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
-            value /= 10;
-        }
-        return string(buffer);
+        _hostUrl = hostUrl;
     }
 
     function getNodePath() private returns (string memory) {
@@ -67,15 +51,28 @@ contract Chainweb is CommonBase {
     function setupChainsForScript() public {
         console.log("Setting main RPC node for", _chains, "chains");
         for (uint256 i = 0; i < _chains; i++) {
-            string memory url = rpcUrl(uintToString(i + _chainIdOffset));
-            console.log("Forking", url);
-            _chainForks.push(vm.createFork(url));
+            if (bytes(_hostUrl).length > 0) {
+                string memory url = string(
+                    abi.encodePacked(
+                        _hostUrl,
+                        "/chain/",
+                        vm.toString(i + _chainwebChainIdOffset),
+                        "/evm/rpc"
+                    )
+                );
+                console.log("Using custom RPC URL:", url);
+                _chainForks.push(vm.createFork(url));
+            } else {
+                string memory url = rpcUrl(vm.toString(i + _chainIdOffset));
+                console.log("Forking", url);
+                _chainForks.push(vm.createFork(url));
+            }
         }
     }
 
     function setupChainsForTest() public {
         console.log("Setting main RPC node for", _chains, "chains");
-        string memory url = rpcUrl(uintToString(_chainIdOffset));
+        string memory url = rpcUrl(vm.toString(_chainIdOffset));
         console.log("Forking", url);
         for (uint24 i = 0; i < _chains; i++) {
             _chainForks.push(vm.createFork(url));
@@ -94,9 +91,17 @@ contract Chainweb is CommonBase {
         require(chainIndex < _chains, "Invalid chain ID");
         uint256 forkId = _chainForks[chainIndex];
         vm.selectFork(forkId);
-        vm.chainId(chainId + _chainIdOffset); // Example offset for chain ID
+        vm.chainId(chainIndex + _chainIdOffset); // Example offset for chain ID
         console.log("Switched to chain:", chainId);
     }
+
+    function getChainIds() public view returns (uint256[] memory) {
+        uint256[] memory chainIds = new uint256[](_chains);
+        for (uint24 i = 0; i < _chains; i++) {
+            chainIds[i] = i + _chainwebChainIdOffset;
+        }
+        return chainIds;
+    }
 }
 
 struct ChainwebConfig {
@@ -113,7 +118,8 @@ contract ChainwebTest is Test {
         chainweb = new Chainweb(
             chainNumbers,
             block.chainid,
-            chainwebChainIdOffset
+            chainwebChainIdOffset,
+            ""
         );
         chainweb.setupChainsForTest();
     }
@@ -123,10 +129,15 @@ contract ChainwebScript is Script {
     Chainweb public chainweb;
 
     constructor(uint24 chainNumbers, uint24 chainwebChainIdOffset) {
+        string memory nodeUrl = vm.envExists("CHAINWEB_HOST")
+            ? vm.envString("CHAINWEB_HOST")
+            : "";
+        console.log("Using node URL:", nodeUrl);
         chainweb = new Chainweb(
             chainNumbers,
             block.chainid,
-            chainwebChainIdOffset
+            chainwebChainIdOffset,
+            nodeUrl
         );
         chainweb.setupChainsForScript();
     }

src/example/script/Counter.s.sol

@@ -5,22 +5,18 @@ import {Script, console} from "forge-std/Script.sol";
 import {Counter} from "../src/Counter.sol";
 import {ChainwebScript} from "kadena-io/foundry-chainweb/Chainweb.sol";
 
-contract CounterScript is ChainwebScript(2, 0) {
+contract CounterScript is ChainwebScript(5, 20) {
     Counter public counter;
 
     function run() public {
-        chainweb.switchChain(0);
-        console.log("Running script on chain:", block.chainid);
-        vm.startBroadcast();
-        Counter counter1 = new Counter();
-        counter1.setNumber(1);
-        vm.stopBroadcast();
-
-        chainweb.switchChain(1);
-        console.log("Running script on chain 2:", block.chainid);
-        vm.startBroadcast();
-        Counter counter2 = new Counter();
-        counter2.setNumber(2);
-        vm.stopBroadcast();
+        uint256[] memory chainIds = chainweb.getChainIds();
+        for (uint256 i = 0; i < chainIds.length; i++) {
+            chainweb.switchChain(chainIds[i]);
+            console.log("Running script on chain:", block.chainid);
+            vm.startBroadcast();
+            Counter counter1 = new Counter();
+            counter1.setNumber(1);
+            vm.stopBroadcast();
+        }
     }
 }