Addding updated version with library for data conversion used in the tests and scripts

lib/openzeppelin-contracts

@@ -1 +1 @@
-Subproject commit 01ef448981be9d20ca85f2faf6ebdf591ce409f3
+Subproject commit 52c36d412e8681053975396223d0ea39687fe33b

script/DappIndexer.s.sol

@@ -3,6 +3,7 @@ pragma solidity ^0.8.23;
 
 import {Script, console2} from "forge-std/Script.sol";
 import { DappIndexer} from "src/DappIndexer.sol";
+import { CIDStorage } from "src/CIDStorage.sol";
 
 contract DappIndexerScript is Script {
     DappIndexer public dappIdxr;
@@ -19,63 +20,41 @@ contract DappIndexerScript is Script {
         uint256 deployerPrivateKey = vm.envUint("PK0");
         // startBroadcast and stopBraodcast will let us execute transactions anything between them
         vm.startBroadcast(deployerPrivateKey);
-        // here we just need to deploy a new contractc
+        // here we just need to deploy a new contract
         dappIdxr = new DappIndexer(owner, owner);
         console2.log("The Dapps Indexer contract address is: ", address(dappIdxr));
 
+        // Define a Dapp name
+        bytes32 dapp_name = bytes32("Dapp01");
+
+        // Define DappURI splited into two bytes32 CIDs
         bytes32 CID1;
         bytes32 CID2;
 
-        (CID1, CID2) = stringToBytes32Pair(dappsURI[0]);
+        (CID1, CID2) = CIDStorage.stringToBytes32Pair(dappsURI[0]);
 
         // Add Dapp
         console2.log("-----Adding Dapp-----");
         console2.log("Dapp Name is:");
-        console2.logBytes32(bytes32("Dapp01"));
+        console2.logBytes32(dapp_name);
         console2.log("Bytes32 first:");
         console2.logBytes32(CID1);
         console2.log("Bytes32 second:");
         console2.logBytes32(CID2);
-        console2.log(Bytes32PairToString(CID1, CID2));
+        console2.log(CIDStorage.bytes32PairToString(CID1, CID2));
-        dappIdxr.addDapp(bytes32("Dapp01"), DappIndexer.PackedCID(CID1, CID2));
+        dappIdxr.addDapp(dapp_name, DappIndexer.PackedCID(CID1, CID2));
 
         // retrive Dapp
         console2.log("-----retriving Dapp-----");
-        DappIndexer.PackedCID memory dapp1 = dappIdxr.getDapp(bytes32("Dapp01"));
+        DappIndexer.PackedCID memory dapp1 = dappIdxr.getDapp(dapp_name);
         console2.log("Bytes32 first:");
         console2.logBytes32(dapp1.CID1);
         console2.log("Bytes32 second:");
         console2.logBytes32(dapp1.CID2);
-        console2.log(Bytes32PairToString(dapp1.CID1, dapp1.CID2));
+
+        // reconstruct the CID and verify
+        console2.log(CIDStorage.bytes32PairToString(dapp1.CID1, dapp1.CID2));
 
         vm.stopBroadcast();
     }
-
-    function Bytes32PairToString(bytes32 part1, bytes32 part2) public pure returns (string memory) {
-        // Concatenate the two bytes32 variables
-        bytes memory concatenatedBytes = abi.encodePacked(part1, part2);
-
-        // Truncate the concatenated bytes to 59 bytes
-        bytes memory truncatedBytes = new bytes(59);
-        for (uint i = 0; i < 59; i++) {
-            truncatedBytes[i] = concatenatedBytes[i];
-        }
-
-        // Convert the truncated bytes to a string
-        string memory str = string(truncatedBytes);
-
-        return str;
-    }
-
-    function stringToBytes32Pair(string memory source) public pure returns (bytes32 part1, bytes32 part2) {
-        bytes memory sourceBytes = bytes(source);
-        require(sourceBytes.length == 59, "URI string must equal to 59 bytes");
-
-        assembly {
-            // Load the first 32 bytes of the string data
-            part1 := mload(add(sourceBytes, 32))
-            // Load the second 32 bytes of the string data
-            part2 := mload(add(sourceBytes, 64))
-        }
-    }
 }

src/CIDStorage.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.23;
+
+library CIDStorage {
+    function bytes32PairToString(bytes32 part1, bytes32 part2) public pure returns (string memory) {
+        // Concatenate the two bytes32 variables
+        bytes memory concatenatedBytes = abi.encodePacked(part1, part2);
+
+        // Truncate the concatenated bytes to 59 bytes
+        bytes memory truncatedBytes = new bytes(59);
+        for (uint i = 0; i < 59; i++) {
+            truncatedBytes[i] = concatenatedBytes[i];
+        }
+
+        // Convert the truncated bytes to a string
+        string memory str = string(truncatedBytes);
+
+        return str;
+    }
+
+    function stringToBytes32Pair(string memory source) public pure returns (bytes32 part1, bytes32 part2) {
+        bytes memory sourceBytes = bytes(source);
+        require(sourceBytes.length == 59, "URI string must equal to 59 bytes");
+
+        assembly {
+            // Load the first 32 bytes of the string data
+            part1 := mload(add(sourceBytes, 32))
+            // Load the second 32 bytes of the string data
+            part2 := mload(add(sourceBytes, 64))
+        }
+    }
+}

src/DappIndexer.sol

@@ -14,6 +14,8 @@ contract DappIndexer is AccessControl {
 
     mapping (bytes32 => PackedCID) private dapps;
 
+    bytes32[] public dapp_names;
+
     constructor(
         address defaultAdmin,
         address moderator
@@ -24,14 +26,49 @@ contract DappIndexer is AccessControl {
 
     function addDapp(bytes32 dapp_name, PackedCID calldata cid)
     external onlyRole(MODERATOR_ROLE) {
+        //if the struct does not exists trace it on the array
+        if (dapps[dapp_name].CID1 != 0 && dapps[dapp_name].CID2 != 0) {
+            dapp_names.push(dapp_name);
+        }
+
         dapps[dapp_name] = PackedCID(cid.CID1, cid.CID2); 
     }
 
-    function removeDapp(bytes32 dapp_name)  external onlyRole(MODERATOR_ROLE) {
+    //@Notice: consider calling getDappIndex internal and pop dapps and dapp_names
+    //@Notice: Yet requiring index might give extra verification
+    function removeDapp(uint index, bytes32 dapp_name) 
+    external onlyRole(MODERATOR_ROLE) {
+        require(index < dapp_names.length, "dapp index out of bounds");
+        require(dapp_names[index] == dapp_name);
+        dapp_names[index] = dapp_names[dapp_names.length - 1];
+        dapp_names.pop();
         delete dapps[dapp_name];
     }
 
     function getDapp(bytes32 dapp_name) external view returns (PackedCID memory){
         return dapps[dapp_name]; 
     }
+
+    function getDappIndex(bytes32 dapp_name) external view returns (uint256 i) {
+       require(dappExists(dapp_name));
+       for(i; i <= dapp_names.length; i++){
+           if(dapp_names[i] == dapp_name){
+               return i;
+           }
+       }
+    }
+
+    function listDappNames() external view returns (bytes32[] memory) {
+        return dapp_names;
+    }
+
+    function dappExists(bytes32 dapp_name) public view returns (bool) {
+       for(uint i; i <= dapp_names.length; i++){
+           if(dapp_names[i] == dapp_name){
+               return true;
+           }
+       }
+       return false;
+    }
+
 }

test/DappIndexer.t.sol

@@ -3,64 +3,69 @@ pragma solidity ^0.8.23;
 
 import { Test, console2 } from "forge-std/Test.sol";
 import { DappIndexer } from "src/DappIndexer.sol";
+import { CIDStorage } from "src/CIDStorage.sol";
 
 contract DappIndexerTest is Test {
     DappIndexer public dappIdxr;
     string[] public dappsURI;
+    address public owner;
     
     function setUp() public {
         dappIdxr = new DappIndexer(address(this), address(this));
         dappsURI = vm.envString("dapps", ' ');
+        owner = vm.envAddress("ACC0");
     }
 
+    // Test adding a dapp that doesn't exist
     function testAddDapp() public {
+        bytes32 dapp_name = bytes32("Dapp01");
         bytes32 CID1;
         bytes32 CID2;
 
-        (CID1, CID2) = stringToBytes32Pair(dappsURI[0]);
+        (CID1, CID2) = CIDStorage.stringToBytes32Pair(dappsURI[0]);
 
         // Add Dapp
         console2.log("Dapp Name is:");
-        console2.logBytes32(bytes32("Dapp01"));
+        console2.logBytes32(dapp_name);
         console2.log("Bytes32 first:");
         console2.logBytes32(CID1);
         console2.log("Bytes32 second:");
         console2.logBytes32(CID2);
-        console2.log(Bytes32PairToString(CID1, CID2));
+        console2.log(CIDStorage.bytes32PairToString(CID1, CID2));
-        dappIdxr.addDapp(bytes32("Dapp01"), DappIndexer.PackedCID(CID1, CID2));
+        dappIdxr.addDapp(dapp_name, DappIndexer.PackedCID(CID1, CID2));
+
         // retrive Dapp
-        DappIndexer.PackedCID memory dapp1 = dappIdxr.getDapp(bytes32("Dapp01"));
+        DappIndexer.PackedCID memory dapp1 = dappIdxr.getDapp(dapp_name);
         assertEq(CID1, dapp1.CID1);
         assertEq(CID2, dapp1.CID2);
-        string memory retrivedDappURI = Bytes32PairToString(dapp1.CID1, dapp1.CID2);
+
+        // reconstruct the CID and verify
+        string memory retrivedDappURI = CIDStorage.bytes32PairToString(dapp1.CID1, dapp1.CID2);
         assertEq(dappsURI[0], retrivedDappURI);
     } 
 
-    function Bytes32PairToString(bytes32 part1, bytes32 part2) public pure returns (string memory) {
+//## ToDo ISSUE #2
-        // Concatenate the two bytes32 variables
+//
-        bytes memory concatenatedBytes = abi.encodePacked(part1, part2);
+//### Features testing
+//
+//- [x] test adding a dapp and retrive it. (addDapp, getDapp)
+//
+//- [ ] test removing a dapp that exists (verify dapps and dapp_names)
+//- [ ] test dappExists (lower, upper, fuzz)
+//- [ ] test removing a dapp that doesn't exist
+//- [ ] test getting that names (listDappNames)
+//- [ ] test getDappIndex (lower, upper, fuzz)
+//- [ ] check if dapp name exists
+//
+//### Library testing
+//
+//- [ ] test adding longer CID
+//- [ ] test adding shorter CID
+//- [ ] test fuzz
+//
+//### Testing Roles Open Zeppelin Module
+//
+//- [ ] test roles for educational purposes.
+//
 
-        // Truncate the concatenated bytes to 59 bytes
-        bytes memory truncatedBytes = new bytes(59);
-        for (uint i = 0; i < 59; i++) {
-            truncatedBytes[i] = concatenatedBytes[i];
-        }
-
-        // Convert the truncated bytes to a string
-        string memory str = string(truncatedBytes);
-
-        return str;
-    }
-
-    function stringToBytes32Pair(string memory source) public pure returns (bytes32 part1, bytes32 part2) {
-        bytes memory sourceBytes = bytes(source);
-        require(sourceBytes.length == 59, "URI string must equal to 59 bytes");
-
-        assembly {
-            // Load the first 32 bytes of the string data
-            part1 := mload(add(sourceBytes, 32))
-            // Load the second 32 bytes of the string data
-            part2 := mload(add(sourceBytes, 64))
-        }
-    }
 }