🍩 DappChef-ProblemsDB

Table of Contents

• Rules
  • Important Announcement
  • Start the Journey
  • Judge
• Metadata
• Special Operation
• Problems Information
• Reference

---

Rules

Important Announcement

1. 檔案名稱必須要跟最終繼承合約（主合約）的 Contract 變數名稱一致，例如第 48 題：

answer48.sol 的 contract 必須為 answer48：

contract answer48 is ERC721, ERC721Storage {
    // ...
}

problem48.txt 的 contract 必須為 problem48：

contract problem48 is ERC721, ERC721Storage {
    // ...
}

2. problem<number>.json 中 problemSolution.methodName 後的 () 中要有參數型別，以逗號隔開，不得有空格。例如以下的 VerifySignature(address,uint256,uint256,address,uint8,uint256,bytes)：

"problemSolution": [
    {
        "methodName": "VerifySignature(address,uint256,uint256,address,uint8,uint256,bytes)",
        "callData": [
                "0xDEcf23CbB14972F2e9f91Ce30515ee955a124Cba",
                "997",
                "1673070083",
                "0xB42faBF7BCAE8bc5E368716B568a6f8Fdf3F84ec",
                "0",
                "0",
                "0xf48090ed731d9b3c956b9ee9843fd96d845879fc22763be659f2fb6f8229b52c245e72e3fb3540e969970333d52fa307b80cb3a04d088364f26c527c4767cb681b"
            ]
        "expectReturn": "true"
    }
]

3. 區塊鏈是沒辦法直接回傳 write function 的 return 給鏈下世界的，所以必須寫一個 getFunction (Read Function) 去讀你要檢查的值。

以下為錯誤題目出法：

address public a;
function changeValue(address inputAddr) public returns (address) {  
    a = inputAddr;
    return a;
}

正確出法為：

address public a;
function changeValue(address inputAddr) public{  
    a = inputAddr;
}

function get_a() public view returns(address){
    return a
}

對應上方的正確合約出法，在 problem<number>.json 中正確批改方法為：

"problemSolution": [
        {
            "methodName": "changeValue(address)",
            "callData": [
                "0x90A1ad9E7c86590Fb8eD813bA7f93a6799fBF8b7"
            ],
            "expectReturn": []
        },
        {
            "methodName": "get_a()",
            "callData": [],
            "expectReturn": ["0x90A1ad9E7c86590Fb8eD813bA7f93a6799fBF8b7"]
        }
]

Start the Journey

1. Clone the repo

$ git clone https://github.com/SWF-Lab/DappChef-Core-Contract.git

2. Make sure the .env arguments are same as your image. (add your private key of account which has enough goerliEther).

$ cp .env.example .env

3. Prepare the node_modules

$ yarn install

4. Compile the contract:

$ yarn compile --force

5. Create new branch, reference with SWF-Lab/github_practice:

$ git checkout main # Change to the main branch
$ git pull # Make sure the local code is same with the remote
$ git checkout -b add-my-context # Create new branch

6. Put your problems to the folder problemVersion1 with template below.
7. Write your problems statement and its Token Metadata in Metadata Folder...
8. Push the code to remote repo:

$ git add .
$ git commit -m "add new problems from x to y"
$ git push

Judge

Use the Judge Script to test your problem in Goerli.

Make sure the problem contract has been compiled ($ yarn compile), and the private key in the .env is as your image.

$ yarn execute scripts/judgeGanache.ts
$ yarn execute scripts/judgeGoerli.ts --network goerli
>
yarn run v1.22.18
$ node -r ts-node/register -r tsconfig-paths/register hardhatRunWithArgs.ts scripts/judgeGoerli.ts --network goerli
√ Please enter the problemNumber you want to judge: ... 15
Trying to deploy problem 15 with Deployer Contract:
    Tx successful with hash: 0xaaa0917f1d4fc2f78760167e5fe1e2055d88aebeea2ca09e661c0910dc748043
    Deployed contract address is 0xC9f1e159fD3fA27B8a3e235947d499A01579E3A9

Begin the Judging...

Testing 0: getOwner()
    - Sameple Input:
    - Sameple Output: 0xdCca4cE55773359E191110Eeb21E0413f770032B
    - Your Output: 0xdCca4cE55773359E191110Eeb21E0413f770032B
    ...Accepted!

Testing 1: getFoo()
    - Sameple Input:
    - Sameple Output: 321
    - Your Output: 321
    ...Accepted!

All Accepted!
Done in 18.75s.

Appendix: Produce Problems Information

$ yarn execute scripts/produceProblemsJSON.ts
>
storing file(s) from [object Object]
PROBLEMS_CODE_IPFS_CID
{
  cid: 'bafybeibrjtmdmpv4g2j7yibdhijlq3m6huq34jqfj3twglpyea6xk7pcz4',
  deals: [],
  size: 173575,
  pin: {
    cid: 'bafybeibrjtmdmpv4g2j7yibdhijlq3m6huq34jqfj3twglpyea6xk7pcz4',
    created: 2023-03-19T05:14:07.137Z,
    size: 173575,
    status: 'pinned'
  },
  created: 2023-03-19T05:14:07.137Z
}
storing file(s) from [object Object]
PROBLEMS_IPFS_CID
{
  cid: 'bafybeiclx7jl4eqyesgvj6umcus7ihbfzlwlfvjm2rn3iej3rvtodebexm',
  deals: [],
  size: 57387,
  pin: {
    cid: 'bafybeiclx7jl4eqyesgvj6umcus7ihbfzlwlfvjm2rn3iej3rvtodebexm',
    created: 2023-03-19T05:14:18.942Z,
    size: 57387,
    status: 'pinned'
  },
  created: 2023-03-19T05:14:18.942Z
}
Done in 28.07s.