Web3.0 DAO开发教程【源码】

在这个教程中,我们将学习如何开发一个支持聊天的去中心化自治组织 (DAO),教程内容 涵盖使用的工具链、智能合约开发部署和前端应用开发。

用熟悉的语言学习 Web3.0 开发Java | Php | Python | .Net / C# | Golang | Node.JS | Flutter / Dart

1、使用的工具链

我们需要安装以下工具来完成此教程:

  • Node.js
  • Ganache-Cli
  • Truffle
  • React
  • Infura
  • Tailwind CSS
  • CometChat SDK
  • Metamask
  • Yarn

2、安装开发依赖

2.1 NodeJs安装

确保你的机器上已经安装了 NodeJs。接下来,在终端上运行代码以确认它已安装。

web3 dao开发教程

2.2 Yarn、Ganache-cli 和 Truffle 安装

在终端上运行以下代码以全局安装这些基本软件包。

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npm i -g yarn
npm i -g truffle
npm i -g ganache-cli

2.3 克隆 Web3 入门项目

使用下面的命令,克隆下面的 web 3.0 入门项目。这将确保我们都在同一个页面上并使用相同的包。

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git clone https://github.com/Daltonic/dominionDAO

太棒了,让我们用下面的文件替换package.json文件:

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{
"name": "dominionDAO",
"private": true,
"version": "0.0.0",
"scripts": {
"start": "react-app-rewired start",
"build": "react-app-rewired build",
"test": "react-app-rewired test",
"eject": "react-scripts eject"
},
"dependencies": {
"@cometchat-pro/chat": "3.0.6",
"moment": "^2.29.3",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-hooks-global-state": "^1.0.2",
"react-icons": "^4.3.1",
"react-identicons": "^1.2.5",
"react-moment": "^1.1.2",
"react-router-dom": "6",
"react-scripts": "5.0.0",
"react-toastify": "^9.0.1",
"recharts": "^2.1.9",
"web-vitals": "^2.1.4",
"web3": "^1.7.1"
},
"devDependencies": {
"@openzeppelin/contracts": "^4.5.0",
"@tailwindcss/forms": "0.4.0",
"@truffle/hdwallet-provider": "^2.0.4",
"assert": "^2.0.0",
"autoprefixer": "10.4.2",
"babel-polyfill": "^6.26.0",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"babel-preset-stage-3": "^6.24.1",
"babel-register": "^6.26.0",
"buffer": "^6.0.3",
"chai": "^4.3.6",
"chai-as-promised": "^7.1.1",
"crypto-browserify": "^3.12.0",
"dotenv": "^16.0.0",
"https-browserify": "^1.0.0",
"mnemonics": "^1.1.3",
"os-browserify": "^0.3.0",
"postcss": "8.4.5",
"process": "^0.11.10",
"react-app-rewired": "^2.1.11",
"stream-browserify": "^3.0.0",
"stream-http": "^3.2.0",
"tailwindcss": "3.0.18",
"url": "^0.11.0"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}

太好了,用上面的代码替换你的package.json文件,然后在你的终端上运行yarn install

安装完毕后,让我们开始编写 Dominion DAO 智能合约。

3、配置 CometChat SDK

要配置CometChat SDK,请按照以下步骤操作,最后,我们需要将这些密钥存储为环境变量。

第 1 步: 前往CometChat仪表板并创建一个帐户。

web3 dao开发教程

第 2步:在注册后登录 CometChat 仪表 板。

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第 3 步: 在仪表板中,添加一个名为dominionDAO 的新应用程序。

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web3 dao开发教程

第 4 步: 从列表中选择刚刚创建的应用程序。

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第 5 步: 从快速入门中将APP_ID、REGION和AUTH_KEY, 复制到你的.env文件中。请参阅图像和代码片段。

web3 dao开发教程

REACT_COMET_CHAT占位符键替换为相应的值:

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REACT_APP_COMET_CHAT_REGION=**
REACT_APP_COMET_CHAT_APP_ID=**************
REACT_APP_COMET_CHAT_AUTH_KEY=******************************

4、配置 Infura

第 1 步: 前往Infura创建一个帐户。

web3 dao开发教程

第 2 步: 从Infura仪表板创建一个新项目。

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web3 dao开发教程

第 3 步: 将Rinkeby测试网络 WebSocket 端点 URL 复制到你的.env文件中。

web3 dao开发教程

接下来,添加你的 Metamask 密码短语和首选帐户私钥。如果正确地完成了这些操作,你的环境变量现在应该如下所示。

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ENDPOINT_URL=***************************
DEPLOYER_KEY=**********************

REACT_APP_COMET_CHAT_REGION=**
REACT_APP_COMET_CHAT_APP_ID=**************
REACT_APP_COMET_CHAT_AUTH_KEY=******************************

如果不知道如何访问你的私钥,请参阅下面的部分。

5、访问 Metamask 私钥

第 1 步: 单击Metamask浏览器扩展程序,并确保Rinkeby已选择作为测试网络。

接下来,在首选帐户上,单击垂直虚线并选择帐户详细信息。见下图。

web3 dao开发教程

第 2 步: 在提供的字段中输入你的密码,然后单击确认按钮,这将使你能够访问你的帐户私钥。

web3 dao开发教程

第 3 步: 单击“导出私钥”以查看你的私钥。确保永远不会在公共页面上公开你的密钥,例如Github. 这就是为什么我们将其附加为环境变量。

web3 dao开发教程

第 4 步: 将你的私钥复制到 .env 文件中。请参阅下面的图像和代码片段:

web3 dao开发教程

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ENDPOINT_URL=***************************
SECRET_KEY=******************
DEPLOYER_KEY=**********************

REACT_APP_COMET_CHAT_REGION=**
REACT_APP_COMET_CHAT_APP_ID=**************
REACT_APP_COMET_CHAT_AUTH_KEY=******************************

至于SECRET_KEY,你需要将你的Metamask密码短语粘贴到环境文件中提供的空间中。

6、Dominion DAO 智能合约

这是智能合约的完整代码,我将逐个解释所有函数和变量。

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract DominionDAO is ReentrancyGuard, AccessControl {
bytes32 private immutable CONTRIBUTOR_ROLE = keccak256("CONTRIBUTOR");
bytes32 private immutable STAKEHOLDER_ROLE = keccak256("STAKEHOLDER");
uint32 immutable MIN_VOTE_DURATION = 1 weeks;
uint256 totalProposals;
uint256 public daoBalance;

mapping(uint256 => ProposalStruct) private raisedProposals;
mapping(address => uint256[]) private stakeholderVotes;
mapping(uint256 => VotedStruct[]) private votedOn;
mapping(address => uint256) private contributors;
mapping(address => uint256) private stakeholders;

struct ProposalStruct {
uint256 id;
uint256 amount;
uint256 duration;
uint256 upvotes;
uint256 downvotes;
string title;
string description;
bool passed;
bool paid;
address payable beneficiary;
address proposer;
address executor;
}

struct VotedStruct {
address voter;
uint256 timestamp;
bool choosen;
}

event Action(
address indexed initiator,
bytes32 role,
string message,
address indexed beneficiary,
uint256 amount
);

modifier stakeholderOnly(string memory message) {
require(hasRole(STAKEHOLDER_ROLE, msg.sender), message);
_;
}

modifier contributorOnly(string memory message) {
require(hasRole(CONTRIBUTOR_ROLE, msg.sender), message);
_;
}

function createProposal(
string calldata title,
string calldata description,
address beneficiary,
uint256 amount
)external
stakeholderOnly("Proposal Creation Allowed for Stakeholders only")
{
uint256 proposalId = totalProposals++;
ProposalStruct storage proposal = raisedProposals[proposalId];

proposal.id = proposalId;
proposal.proposer = payable(msg.sender);
proposal.title = title;
proposal.description = description;
proposal.beneficiary = payable(beneficiary);
proposal.amount = amount;
proposal.duration = block.timestamp + MIN_VOTE_DURATION;

emit Action(
msg.sender,
CONTRIBUTOR_ROLE,
"PROPOSAL RAISED",
beneficiary,
amount
);
}

function performVote(uint256 proposalId, bool choosen)
external
stakeholderOnly("Unauthorized: Stakeholders only")
{
ProposalStruct storage proposal = raisedProposals[proposalId];

handleVoting(proposal);

if (choosen) proposal.upvotes++;
else proposal.downvotes++;

stakeholderVotes[msg.sender].push(proposal.id);

votedOn[proposal.id].push(
VotedStruct(
msg.sender,
block.timestamp,
choosen
)
);

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"PROPOSAL VOTE",
proposal.beneficiary,
proposal.amount
);
}

function handleVoting(ProposalStruct storage proposal) private {
if (
proposal.passed ||
proposal.duration <= block.timestamp
) {
proposal.passed = true;
revert("Proposal duration expired");
}

uint256[] memory tempVotes = stakeholderVotes[msg.sender];
for (uint256 votes = 0; votes < tempVotes.length; votes++) {
if (proposal.id == tempVotes[votes])
revert("Double voting not allowed");
}
}

function payBeneficiary(uint256 proposalId)
external
stakeholderOnly("Unauthorized: Stakeholders only")
returns (bool)
{
ProposalStruct storage proposal = raisedProposals[proposalId];
require(daoBalance >= proposal.amount, "Insufficient fund");
require(block.timestamp > proposal.duration, "Proposal still ongoing");

if (proposal.paid) revert("Payment sent before");

if (proposal.upvotes <= proposal.downvotes)
revert("Insufficient votes");

payTo(proposal.beneficiary, proposal.amount);

proposal.paid = true;
proposal.executor = msg.sender;
daoBalance -= proposal.amount;

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"PAYMENT TRANSFERED",
proposal.beneficiary,
proposal.amount
);

return true;
}

function contribute() payable external {

if (!hasRole(STAKEHOLDER_ROLE, msg.sender)) {
uint256 totalContribution =
contributors[msg.sender] + msg.value;

if (totalContribution >= 5 ether) {
stakeholders[msg.sender] = totalContribution;
contributors[msg.sender] += msg.value;
_setupRole(STAKEHOLDER_ROLE, msg.sender);
_setupRole(CONTRIBUTOR_ROLE, msg.sender);
} else {
contributors[msg.sender] += msg.value;
_setupRole(CONTRIBUTOR_ROLE, msg.sender);
}
} else {
contributors[msg.sender] += msg.value;
stakeholders[msg.sender] += msg.value;
}

daoBalance += msg.value;

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"CONTRIBUTION RECEIVED",
address(this),
msg.value
);
}

function getProposals()
external
view
returns (ProposalStruct[] memory props)
{
props = new ProposalStruct[](totalProposals);

for (uint256 i = 0; i < totalProposals; i++) {
props[i] = raisedProposals[i];
}
}

function getProposal(uint256 proposalId)
external
view
returns (ProposalStruct memory)
{
return raisedProposals[proposalId];
}

function getVotesOf(uint256 proposalId)
external
view
returns (VotedStruct[] memory)
{
return votedOn[proposalId];
}

function getStakeholderVotes()
external
view
stakeholderOnly("Unauthorized: not a stakeholder")
returns (uint256[] memory)
{
return stakeholderVotes[msg.sender];
}

function getStakeholderBalance()
external
view
stakeholderOnly("Unauthorized: not a stakeholder")
returns (uint256)
{
return stakeholders[msg.sender];
}

function isStakeholder() external view returns (bool) {
return stakeholders[msg.sender] > 0;
}

function getContributorBalance()
external
view
contributorOnly("Denied: User is not a contributor")
returns (uint256)
{
return contributors[msg.sender];
}

function isContributor() external view returns (bool) {
return contributors[msg.sender] > 0;
}

function getBalance() external view returns (uint256) {
return contributors[msg.sender];
}

function payTo(
address to,
uint256 amount
) internal returns (bool) {
(bool success,) = payable(to).call{value: amount}("");
require(success, "Payment failed");
return true;
}
}

在刚刚克隆的项目中,前往src >> contract目录并创建一个名为 DominionDAO.sol的文件,然后将上述 代码粘贴到其中。

6.1 pragma语句

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

Solidity 需要一个许可证标识符来编译你的代码,否则它会产生一个警告,要求你指定一个。此外,Solidity 要求 你为智能合约指定编译器的版本。这就是pragma这个词所代表的。

6.2 import语句

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import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

在上面的代码块中,我们使用import导入两个openzeppelin’s智能合约来指定角色并保护我们的智能合约免受重入攻击。

6.3 DAO角色相关的状态变量

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bytes32 private immutable CONTRIBUTOR_ROLE = keccak256("CONTRIBUTOR");
bytes32 private immutable STAKEHOLDER_ROLE = keccak256("STAKEHOLDER");
uint32 immutable MIN_VOTE_DURATION = 1 weeks;
uint256 totalProposals;
uint256 public daoBalance;

我们为利益相关者和贡献者角色设置了一些状态变量,并将最短投票持续时间指定为一周。我们还初始化了总提案计数器和 一个变量来记录我们的可用余额。

6.4 DAO提案和投票相关的状态变量

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mapping(uint256 => ProposalStruct) private raisedProposals;
mapping(address => uint256[]) private stakeholderVotes;
mapping(uint256 => VotedStruct[]) private votedOn;
mapping(address => uint256) private contributors;
mapping(address => uint256) private stakeholders;

raisedProposals跟踪提交给我们智能合约的所有提案。stakeholderVotes顾名思义,跟踪利益相关者的投票。votedOn跟踪与 提案相关的所有投票。贡献者跟踪向我们平台捐款的任何人,而1 ether以上的贡献者被视为利益相关者进行跟踪。

6.5 DAO提案和投票的数据结构

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struct ProposalStruct {
uint256 id;
uint256 amount;
uint256 duration;
uint256 upvotes;
uint256 downvotes;
string title;
string description;
bool passed;
bool paid;
address payable beneficiary;
address proposer;
address executor;
}

struct VotedStruct {
address voter;
uint256 timestamp;
bool choosen;
}

proposalStruct描述每个提案的内容,而votedStruct描述每个投票的内容。

6.6 Action事件

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event Action(
address indexed initiator,
bytes32 role,
string message,
address indexed beneficiary,
uint256 amount
);

这是一个名为 Action 的动态事件。这将帮助我们丰富每笔交易注销的信息。

6.7 DAO角色相关的修饰符

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modifier stakeholderOnly(string memory message) {
require(hasRole(STAKEHOLDER_ROLE, msg.sender), message);
_;
}

modifier contributorOnly(string memory message) {
require(hasRole(CONTRIBUTOR_ROLE, msg.sender), message);
_;
}

上述修饰符帮助我们按角色识别用户,也可以防止他们访问一些未经授权的资源。

6.8 DAO提案创建方法

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function createProposal(
string calldata title,
string calldata description,
address beneficiary,
uint256 amount
)external
stakeholderOnly("Proposal Creation Allowed for Stakeholders only")
{
uint256 proposalId = totalProposals++;
ProposalStruct storage proposal = raisedProposals[proposalId];

proposal.id = proposalId;
proposal.proposer = payable(msg.sender);
proposal.title = title;
proposal.description = description;
proposal.beneficiary = payable(beneficiary);
proposal.amount = amount;
proposal.duration = block.timestamp + MIN_VOTE_DURATION;

emit Action(
msg.sender,
CONTRIBUTOR_ROLE,
"PROPOSAL RAISED",
beneficiary,
amount
);
}

上述函数获取提案的标题、描述、金额和受益人的钱包地址并创建提案。该功能仅允许利益相关者创建提案。利益相关者是至少 做出了1 ether贡献的用户。

6.9 DAO投票方法

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function performVote(uint256 proposalId, bool choosen)
external
stakeholderOnly("Unauthorized: Stakeholders only")
{
ProposalStruct storage proposal = raisedProposals[proposalId];

handleVoting(proposal);

if (choosen) proposal.upvotes++;
else proposal.downvotes++;

stakeholderVotes[msg.sender].push(proposal.id);

votedOn[proposal.id].push(
VotedStruct(
msg.sender,
block.timestamp,
choosen
)
);

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"PROPOSAL VOTE",
proposal.beneficiary,
proposal.amount
);
}

此函数接受两个参数,一个提案 ID 和一个由布尔值表示的首选选项。True 表示接受投票,False 表示拒绝。

6.10 DAO投票执行方法

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function handleVoting(ProposalStruct storage proposal) private {
if (
proposal.passed ||
proposal.duration <= block.timestamp
) {
proposal.passed = true;
revert("Proposal duration expired");
}

uint256[] memory tempVotes = stakeholderVotes[msg.sender];
for (uint256 votes = 0; votes < tempVotes.length; votes++) {
if (proposal.id == tempVotes[votes])
revert("Double voting not allowed");
}
}

此函数执行实际投票,包括检查用户是否是利益相关者并有资格投票。

6.11 DAO受益人支付方法

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function payBeneficiary(uint256 proposalId)
external
stakeholderOnly("Unauthorized: Stakeholders only")
returns (bool)
{
ProposalStruct storage proposal = raisedProposals[proposalId];
require(daoBalance >= proposal.amount, "Insufficient fund");
require(block.timestamp > proposal.duration, "Proposal still ongoing");

if (proposal.paid) revert("Payment sent before");

if (proposal.upvotes <= proposal.downvotes)
revert("Insufficient votes");

payTo(proposal.beneficiary, proposal.amount);

proposal.paid = true;
proposal.executor = msg.sender;
daoBalance -= proposal.amount;

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"PAYMENT TRANSFERED",
proposal.beneficiary,
proposal.amount
);

return true;
}

此功能负责根据特定标准向提案所附的受益人付款:

  • 受益人不得已经支付。
  • 案期限必须已过期。
  • 可用余额必须能够支付给受益人。
  • 票数不得平分。

6.12 DAO捐款方法

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function contribute() payable external {
if (!hasRole(STAKEHOLDER_ROLE, msg.sender)) {
uint256 totalContribution =
contributors[msg.sender] + msg.value;

if (totalContribution >= 5 ether) {
stakeholders[msg.sender] = totalContribution;
contributors[msg.sender] += msg.value;
_setupRole(STAKEHOLDER_ROLE, msg.sender);
_setupRole(CONTRIBUTOR_ROLE, msg.sender);
} else {
contributors[msg.sender] += msg.value;
_setupRole(CONTRIBUTOR_ROLE, msg.sender);
}
} else {
contributors[msg.sender] += msg.value;
stakeholders[msg.sender] += msg.value;
}

daoBalance += msg.value;

emit Action(
msg.sender,
STAKEHOLDER_ROLE,
"CONTRIBUTION RECEIVED",
address(this),
msg.value
);
}

该函数负责从捐助者和有兴趣成为利益相关者的人那里收集捐款。

6.13 DAO提案查询方法

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function getProposals()
external
view
returns (ProposalStruct[] memory props)
{
props = new ProposalStruct[](totalProposals);

for (uint256 i = 0; i < totalProposals; i++) {
props[i] = raisedProposals[i];
}
}

上面函数检索记录在此智能合约上的一组提案。

6.14 DAO提案详情读取方法

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function getProposal(uint256 proposalId)
external
view
returns (ProposalStruct memory)
{
return raisedProposals[proposalId];
}

上面函数按 Id 检索特定提案。

6.15 DAO投票查询方法

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function getVotesOf(uint256 proposalId)
external
view
returns (VotedStruct[] memory)
{
return votedOn[proposalId];
}

这将返回与特定提案相关的投票列表。

6.16 DAO利益相关者投票查询方法

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function getStakeholderVotes()
external
view
stakeholderOnly("Unauthorized: not a stakeholder")
returns (uint256[] memory)
{
return stakeholderVotes[msg.sender];
}

这将返回智能合约上的利益相关者列表,并且只有利益相关者才能调用此函数。

6.17 DAO利益相关者余额查询方法

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function getStakeholderBalance()
external
view
stakeholderOnly("Unauthorized: not a stakeholder")
returns (uint256)
{
return stakeholders[msg.sender];
}

这将返回利益相关者贡献的金额。

6.18 DAO利益相关者判别方法

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function isStakeholder() external view returns (bool) {
return stakeholders[msg.sender] > 0;
}

判断用户是否为利益相关者,返回 True 或 False。

6.19 DAO一般贡献者余额查询方法

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function getContributorBalance()
external
view
contributorOnly("Denied: User is not a contributor")
returns (uint256)
{
return contributors[msg.sender];
}

这将返回贡献者的余额,并且只有贡献者可以访问。

6.20 DAO一般贡献者判别方法

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function isContributor() external view returns (bool) {
return contributors[msg.sender] > 0;
}

这会检查用户是否是贡献者,并用 True 或 False 表示。

6.21 DAO普通用户余额查询方法

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function getBalance() external view returns (uint256) {
return contributors[msg.sender];
}

返回调用用户的余额,无论其角色如何。

6.22 DAO支付方法

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function payTo(
address to,
uint256 amount
) internal returns (bool) {
(bool success,) = payable(to).call{value: amount}("");
require(success, "Payment failed");
return true;
}

此函数执行指定金额和帐户的付款。

7、配置DAO合约部署脚本

与智能合约有关的另一件事是配置部署脚本。

前往项目的迁移文件夹中的 2_deploy_contracts.js 文件,并使用下面的代码片段对其进行更新。

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const DominionDAO = artifacts.require('DominionDAO')
module.exports = async function (deployer) {
await deployer.deploy(DominionDAO)
}

太棒了,我们刚刚完成了应用程序的智能合约,是时候开始构建 Dapp 界面了。

8、开发DAO应用前端

前端包括许多组件和部件。我们将创建所有组件、视图和其余外围设备。

8.1 DAO应用标题栏组件

web3 dao开发教程

web3 dao开发教程

该组件捕获有关当前用户的信息,并带有一个用于明暗模式的主题切换按钮。这是通过 Tailwind CSS 实现的,具体 请参阅下面的代码。

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import { useState, useEffect } from 'react'
import { FaUserSecret } from 'react-icons/fa'
import { MdLightMode } from 'react-icons/md'
import { FaMoon } from 'react-icons/fa'
import { Link } from 'react-router-dom'
import { connectWallet } from '../Dominion'
import { useGlobalState, truncate } from '../store'

const Header = () => {
const [theme, setTheme] = useState(localStorage.theme)
const themeColor = theme === 'dark' ? 'light' : 'dark'
const darken = theme === 'dark' ? true : false
const [connectedAccount] = useGlobalState('connectedAccount')

useEffect(() => {
const root = window.document.documentElement
root.classList.remove(themeColor)
root.classList.add(theme)
localStorage.setItem('theme', theme)
}, [themeColor, theme])

const toggleLight = () => {
const root = window.document.documentElement
root.classList.remove(themeColor)
root.classList.add(theme)
localStorage.setItem('theme', theme)
setTheme(themeColor)
}

return (
<header className="sticky top-0 z-50 dark:text-blue-500">
<nav className="navbar navbar-expand-lg shadow-md py-2 relative flex items-center w-full justify-between bg-white dark:bg-[#212936]">
<div className="px-6 w-full flex flex-wrap items-center justify-between">
<div className="navbar-collapse collapse grow flex flex-row justify-between items-center p-2">
<Link
to={'/'}
className="flex flex-row justify-start items-center space-x-3"
>
<FaUserSecret className="cursor-pointer" size={25} />
<span className="invisible md:visible dark:text-gray-300">
Dominion
</span>
</Link>

<div className="flex flex-row justify-center items-center space-x-5">
{darken ? (
<MdLightMode
className="cursor-pointer"
size={25}
onClick={toggleLight}
/>
) : (
<FaMoon
className="cursor-pointer"
size={25}
onClick={toggleLight}
/>
)}

{connectedAccount ? (
<button
className="px-4 py-2.5 bg-blue-600 text-white
font-medium text-xs leading-tight uppercase
rounded-full shadow-md hover:bg-blue-700 hover:shadow-lg
focus:bg-blue-700 focus:shadow-lg focus:outline-none
focus:ring-0 active:bg-blue-800 active:shadow-lg
transition duration-150 ease-in-out dark:text-blue-500
dark:border dark:border-blue-500 dark:bg-transparent"
>
{truncate(connectedAccount, 4, 4, 11)}
</button>
) : (
<button
className="px-4 py-2.5 bg-blue-600 text-white
font-medium text-xs leading-tight uppercase
rounded-full shadow-md hover:bg-blue-700 hover:shadow-lg
focus:bg-blue-700 focus:shadow-lg focus:outline-none
focus:ring-0 active:bg-blue-800 active:shadow-lg
transition duration-150 ease-in-out dark:text-blue-500
dark:border dark:border-blue-500 dark:bg-transparent"
onClick={connectWallet}
>
Connect Wallet
</button>
)}
</div>
</div>
</div>
</nav>
</header>
)
}

export default Header

8.2 DAO应用横幅组件

web3 dao开发教程

该组件包含有关 DAO 当前状态的信息,例如总余额和未决提案的数量。

该组件还包括使用贡献函数生成新提案的能力。看看下面的代码。

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import { useState } from 'react'
import { setGlobalState, useGlobalState } from '../store'
import { performContribute } from '../Dominion'
import { toast } from 'react-toastify'

const Banner = () => {
const [isStakeholder] = useGlobalState('isStakeholder')
const [proposals] = useGlobalState('proposals')
const [connectedAccount] = useGlobalState('connectedAccount')
const [currentUser] = useGlobalState('currentUser')
const [balance] = useGlobalState('balance')
const [mybalance] = useGlobalState('mybalance')
const [amount, setAmount] = useState('')

const onPropose = () => {
if (!isStakeholder) return
setGlobalState('createModal', 'scale-100')
}

const onContribute = () => {
if (!!!amount || amount == '') return
toast.info('Contribution in progress...')

performContribute(amount).then((bal) => {
if (!!!bal.message) {
setGlobalState('balance', Number(balance) + Number(bal))
setGlobalState('mybalance', Number(mybalance) + Number(bal))
setAmount('')
toast.success('Contribution received')
}
})
}

const opened = () =>
proposals.filter(
(proposal) => new Date().getTime() < Number(proposal.duration + '000')
).length

return (
<div className="p-8">
<h2 className="font-semibold text-3xl mb-5">
{opened()} Proposal{opened() == 1 ? '' : 's'} Currenly Opened
</h2>
<p>
Current DAO Balance: <strong>{balance} Eth</strong> <br />
Your contributions:{' '}
<span>
<strong>{mybalance} Eth</strong>
{isStakeholder ? ', and you are now a stakeholder 😊' : null}
</span>
</p>
<hr className="my-6 border-gray-300 dark:border-gray-500" />
<p>
{isStakeholder
? 'You can now raise proposals on this platform 😆'
: 'Hey, when you contribute upto 1 ether you become a stakeholder 😎'}
</p>
<div className="flex flex-row justify-start items-center md:w-1/3 w-full mt-4">
<input
type="number"
className="form-control block w-full px-3 py-1.5
text-base font-normaltext-gray-700
bg-clip-padding border border-solid border-gray-300
rounded transition ease-in-out m-0 shadow-md
focus:text-gray-500 focus:outline-none
dark:border-gray-500 dark:bg-transparent"
placeholder="e.g 2.5 Eth"
onChange={(e) => setAmount(e.target.value)}
value={amount}
required
/>
</div>
<div
className="flex flex-row justify-start items-center space-x-3 mt-4"
role="group"
>
<button
type="button"
className={`inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase shadow-md rounded-full
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out dark:text-blue-500
dark:border dark:border-blue-500 dark:bg-transparent`}
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={onContribute}
>
Contribute
</button>

{isStakeholder ? (
<button
type="button"
className={`inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase shadow-md rounded-full
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out dark:text-blue-500
dark:border dark:border-blue-500 dark:bg-transparent`}
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={onPropose}
>
Propose
</button>
) : null}
{currentUser &&
currentUser.uid == connectedAccount.toLowerCase() ? null : (
<button
type="button"
className={`inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase shadow-md rounded-full
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out dark:border dark:border-blue-500`}
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={() => setGlobalState('loginModal', 'scale-100')}
>
Login Chat
</button>
)}
</div>
</div>
)
}

export default Banner

8.3 DAO应用提案组件

web3 dao开发教程

该组件包含我们智能合约中的提案列表。此外,使您能够在关闭和打开的提案之间进行过滤。在提案到期时,支付按钮变为可用, 该按钮使利益相关者可以选择支付与提案相关的金额。请参阅下面的代码。

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import Identicon from 'react-identicons'
import { useState } from 'react'
import { Link } from 'react-router-dom'
import { truncate, useGlobalState, daysRemaining } from '../store'
import { payoutBeneficiary } from '../Dominion'
import { toast } from 'react-toastify'

const Proposals = () => {
const [data] = useGlobalState('proposals')
const [proposals, setProposals] = useState(data)

const deactive = `bg-transparent
text-blue-600 font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-600
transition duration-150 ease-in-out overflow-hidden
border border-blue-600 hover:text-white focus:text-white`

const active = `bg-blue-600
text-white font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out overflow-hidden
border border-blue-600`

const getAll = () => setProposals(data)

const getOpened = () =>
setProposals(
data.filter(
(proposal) => new Date().getTime() < Number(proposal.duration + '000')
)
)

const getClosed = () =>
setProposals(
data.filter(
(proposal) => new Date().getTime() > Number(proposal.duration + '000')
)
)

const handlePayout = (id) => {
payoutBeneficiary(id).then((res) => {
if (!!!res.code) {
toast.success('Beneficiary successfully Paid Out!')
window.location.reload()
}
})
}

return (
<div className="flex flex-col p-8">
<div className="flex flex-row justify-center items-center" role="group">
<button
aria-current="page"
className={`rounded-l-full px-6 py-2.5 ${active}`}
onClick={getAll}
>
All
</button>
<button
aria-current="page"
className={`px-6 py-2.5 ${deactive}`}
onClick={getOpened}
>
Open
</button>
<button
aria-current="page"
className={`rounded-r-full px-6 py-2.5 ${deactive}`}
onClick={getClosed}
>
Closed
</button>
</div>
<div className="overflow-x-auto sm:-mx-6 lg:-mx-8">
<div className="py-2 inline-block min-w-full sm:px-6 lg:px-8">
<div className="h-[calc(100vh_-_20rem)] overflow-y-auto shadow-md rounded-md">
<table className="min-w-full">
<thead className="border-b dark:border-gray-500">
<tr>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Created By
</th>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Title
</th>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Expires
</th>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Action
</th>
</tr>
</thead>
<tbody>
{proposals.map((proposal) => (
<tr
key={proposal.id}
className="border-b dark:border-gray-500"
>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
<div className="flex flex-row justify-start items-center space-x-3">
<Identicon
string={proposal.proposer.toLowerCase()}
size={25}
className="h-10 w-10 object-contain rounded-full mr-3"
/>
<span>{truncate(proposal.proposer, 4, 4, 11)}</span>
</div>
</td>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
{proposal.title.substring(0, 80) + '...'}
</td>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
{new Date().getTime() > Number(proposal.duration + '000')
? 'Expired'
: daysRemaining(proposal.duration)}
</td>
<td
className="flex justify-start items-center space-x-3
text-sm font-light px-6 py-4 whitespace-nowrap"
>
<Link
to={'/proposal/' + proposal.id}
className="dark:border rounded-full px-6 py-2.5 dark:border-blue-600
dark:text-blue-600 dark:bg-transparent font-medium text-xs leading-tight
uppercase hover:border-blue-700 focus:border-blue-700
focus:outline-none focus:ring-0 active:border-blue-800
transition duration-150 ease-in-out text-white bg-blue-600"
>
View
</Link>

{new Date().getTime() >
Number(proposal.duration + '000') ? (
proposal.upvotes > proposal.downvotes ? (
!proposal.paid ? (
<button
className="dark:border rounded-full px-6 py-2.5 dark:border-red-600
dark:text-red-600 dark:bg-transparent font-medium text-xs leading-tight
uppercase hover:border-red-700 focus:border-red-700
focus:outline-none focus:ring-0 active:border-red-800
transition duration-150 ease-in-out text-white bg-red-600"
onClick={() => handlePayout(proposal.id)}
>
Payout
</button>
) : (
<button
className="dark:border rounded-full px-6 py-2.5 dark:border-green-600
dark:text-green-600 dark:bg-transparent font-medium text-xs leading-tight
uppercase hover:border-green-700 focus:border-green-700
focus:outline-none focus:ring-0 active:border-green-800
transition duration-150 ease-in-out text-white bg-green-600"
>
Paid
</button>
)
) : (
<button
className="dark:border rounded-full px-6 py-2.5 dark:border-red-600
dark:text-red-600 dark:bg-transparent font-medium text-xs leading-tight
uppercase hover:border-red-700 focus:border-red-700
focus:outline-none focus:ring-0 active:border-red-800
transition duration-150 ease-in-out text-white bg-red-600"
>
Rejected
</button>
)
) : null}
</td>
</tr>
))}
</tbody>
</table>
</div>
</div>
</div>
</div>
)
}

export default Proposals

8.4 DAO应用提案详情组件

web3 dao开发教程

此组件显示有关当前提案的信息,包括成本。该组件允许利益相关者接受或拒绝提案。

提议者可以组群,其他平台用户可以进行 web3.0 风格的匿名聊天。

该组件还包括一个条形图,可让你查看接受者与拒绝者的比率。看看下面的代码。

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import moment from 'moment'
import { useEffect, useState } from 'react'
import { useParams, useNavigate } from 'react-router-dom'
import { toast } from 'react-toastify'
import { getGroup, createNewGroup, joinGroup } from '../CometChat'
import {
BarChart,
Bar,
CartesianGrid,
XAxis,
YAxis,
Legend,
Tooltip,
} from 'recharts'
import { getProposal, voteOnProposal } from '../Dominion'
import { useGlobalState } from '../store'

const ProposalDetails = () => {
const { id } = useParams()
const navigator = useNavigate()
const [proposal, setProposal] = useState(null)
const [group, setGroup] = useState(null)
const [data, setData] = useState([])
const [isStakeholder] = useGlobalState('isStakeholder')
const [connectedAccount] = useGlobalState('connectedAccount')
const [currentUser] = useGlobalState('currentUser')

useEffect(() => {
retrieveProposal()
getGroup(`pid_${id}`).then((group) => {
if (!!!group.code) setGroup(group)
console.log(group)
})
}, [id])

const retrieveProposal = () => {
getProposal(id).then((res) => {
setProposal(res)
setData([
{
name: 'Voters',
Acceptees: res?.upvotes,
Rejectees: res?.downvotes,
},
])
})
}

const onVote = (choice) => {
if (new Date().getTime() > Number(proposal.duration + '000')) {
toast.warning('Proposal expired!')
return
}

voteOnProposal(id, choice).then((res) => {
if (!!!res.code) {
toast.success('Voted successfully!')
window.location.reload()
}
})
}

const daysRemaining = (days) => {
const todaysdate = moment()
days = Number((days + '000').slice(0))
days = moment(days).format('YYYY-MM-DD')
days = moment(days)
days = days.diff(todaysdate, 'days')
return days == 1 ? '1 day' : days + ' days'
}

const onEnterChat = () => {
if (group.hasJoined) {
navigator(`/chat/${`pid_${id}`}`)
} else {
joinGroup(`pid_${id}`).then((res) => {
if (!!res) {
navigator(`/chat/${`pid_${id}`}`)
console.log('Success joining: ', res)
} else {
console.log('Error Joining Group: ', res)
}
})
}
}

const onCreateGroup = () => {
createNewGroup(`pid_${id}`, proposal.title).then((group) => {
if (!!!group.code) {
toast.success('Group created successfully!')
setGroup(group)
} else {
console.log('Error Creating Group: ', group)
}
})
}

return (
<div className="p-8">
<h2 className="font-semibold text-3xl mb-5">{proposal?.title}</h2>
<p>
This proposal is to payout <strong>{proposal?.amount} Eth</strong> and
currently have{' '}
<strong>{proposal?.upvotes + proposal?.downvotes} votes</strong> and
will expire in <strong>{daysRemaining(proposal?.duration)}</strong>
</p>
<hr className="my-6 border-gray-300" />
<p>{proposal?.description}</p>
<div className="flex flex-row justify-start items-center w-full mt-4 overflow-auto">
<BarChart width={730} height={250} data={data}>
<CartesianGrid strokeDasharray="3 3" />
<XAxis dataKey="name" />
<YAxis />
<Tooltip />
<Legend />
<Bar dataKey="Acceptees" fill="#2563eb" />
<Bar dataKey="Rejectees" fill="#dc2626" />
</BarChart>
</div>
<div
className="flex flex-row justify-start items-center space-x-3 mt-4"
role="group"
>
{isStakeholder ? (
<>
<button
type="button"
className="inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase rounded-full shadow-md
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out dark:text-gray-300
dark:border dark:border-gray-500 dark:bg-transparent"
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={() => onVote(true)}
>
Accept
</button>
<button
type="button"
className="inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase rounded-full shadow-md
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out
dark:border dark:border-gray-500 dark:bg-transparent"
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={() => onVote(false)}
>
Reject
</button>

{currentUser &&
currentUser.uid.toLowerCase() == proposal?.proposer.toLowerCase() &&
!group ? (
<button
type="button"
className="inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase rounded-full shadow-md
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out
dark:border dark:border-blue-500"
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={onCreateGroup}
>
Create Group
</button>
) : null}
</>
) : null}

{currentUser && currentUser.uid.toLowerCase() == connectedAccount.toLowerCase() && !!!group?.code && group != null ? (
<button
type="button"
className="inline-block px-6 py-2.5
bg-blue-600 text-white font-medium text-xs
leading-tight uppercase rounded-full shadow-md
hover:bg-blue-700 hover:shadow-lg focus:bg-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:bg-blue-800 active:shadow-lg transition
duration-150 ease-in-out
dark:border dark:border-blue-500"
data-mdb-ripple="true"
data-mdb-ripple-color="light"
onClick={onEnterChat}
>
Chat
</button>
) : null}

{proposal?.proposer.toLowerCase() != connectedAccount.toLowerCase() &&
!!!group ? (
<button
type="button"
className="inline-block px-6 py-2.5 bg-blue-600
dark:bg-transparent text-white font-medium text-xs
leading-tight uppercase rounded-full shadow-md
hover:border-blue-700 hover:shadow-lg focus:border-blue-700
focus:shadow-lg focus:outline-none focus:ring-0
active:border-blue-800 active:shadow-lg transition
duration-150 ease-in-out dark:text-blue-500
dark:border dark:border-blue-500 disabled:bg-blue-300"
data-mdb-ripple="true"
data-mdb-ripple-color="light"
disabled
>
Group N/A
</button>
) : null}
</div>
</div>
)
}

export default ProposalDetails

8.5 DAO应用选民组件

web3 dao开发教程

该组件仅列出对提案进行投票的利益相关者。该组件还为用户提供了在拒绝者和接受者之间进行过滤的机会。 请参阅下面的代码。

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import Identicon from 'react-identicons'
import moment from 'moment'
import { useState, useEffect } from 'react'
import { useParams } from 'react-router-dom'
import { truncate } from '../store'
import { listVoters } from '../Dominion'

const Voters = () => {
const [voters, setVoters] = useState([])
const [data, setData] = useState([])
const { id } = useParams()

const timeAgo = (timestamp) => moment(Number(timestamp + '000')).fromNow()

const deactive = `bg-transparent
text-blue-600 font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-600
transition duration-150 ease-in-out overflow-hidden
border border-blue-600 hover:text-white focus:text-white`

const active = `bg-blue-600
text-white font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out overflow-hidden
border border-blue-600`

useEffect(() => {
listVoters(id).then((res) => {
setVoters(res)
setData(res)
})
}, [id])

const getAll = () => setVoters(data)

const getAccepted = () => setVoters(data.filter((vote) => vote.choosen))

const getRejected = () => setVoters(data.filter((vote) => !vote.choosen))

return (
<div className="flex flex-col p-8">
<div className="flex flex-row justify-center items-center" role="group">
<button
aria-current="page"
className={`rounded-l-full px-6 py-2.5 ${active}`}
onClick={getAll}
>
All
</button>
<button
aria-current="page"
className={`px-6 py-2.5 ${deactive}`}
onClick={getAccepted}
>
Acceptees
</button>
<button
aria-current="page"
className={`rounded-r-full px-6 py-2.5 ${deactive}`}
onClick={getRejected}
>
Rejectees
</button>
</div>
<div className="overflow-x-auto sm:-mx-6 lg:-mx-8">
<div className="py-2 inline-block min-w-full sm:px-6 lg:px-8">
<div className="h-[calc(100vh_-_20rem)] overflow-y-auto shadow-md rounded-md">
<table className="min-w-full">
<thead className="border-b dark:border-gray-500">
<tr>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Voter
</th>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Voted
</th>
<th
scope="col"
className="text-sm font-medium px-6 py-4 text-left"
>
Vote
</th>
</tr>
</thead>
<tbody>
{voters.map((voter, i) => (
<tr
key={i}
className="border-b dark:border-gray-500 transition duration-300 ease-in-out"
>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
<div className="flex flex-row justify-start items-center space-x-3">
<Identicon
string={voter.voter.toLowerCase()}
size={25}
className="h-10 w-10 object-contain rounded-full mr-3"
/>
<span>{truncate(voter.voter, 4, 4, 11)}</span>
</div>
</td>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
{timeAgo(voter.timestamp)}
</td>
<td className="text-sm font-light px-6 py-4 whitespace-nowrap">
{voter.choosen ? (
<button
className="border-2 rounded-full px-6 py-2.5 border-blue-600
text-blue-600 font-medium text-xs leading-tight
uppercase hover:border-blue-700 focus:border-blue-700
focus:outline-none focus:ring-0 active:border-blue-800
transition duration-150 ease-in-out"
>
Accepted
</button>
) : (
<button
className="border-2 rounded-full px-6 py-2.5 border-red-600
text-red-600 font-medium text-xs leading-tight
uppercase hover:border-red-700 focus:border-red-700
focus:outline-none focus:ring-0 active:border-red-800
transition duration-150 ease-in-out"
>
Rejected
</button>
)}
</td>
</tr>
))}
</tbody>
</table>
</div>
</div>
</div>
<div className="mt-4 text-center">
{voters.length >= 10 ? (
<button
aria-current="page"
className="rounded-full px-6 py-2.5 bg-blue-600
font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out dark:text-gray-300
dark:border dark:border-gray-500 dark:bg-transparent"
>
Load More
</button>
) : null}
</div>
</div>
)
}

export default Voters

8.6 DAO应用消息组件

web3 dao开发教程

借助 CometChat SDK 结合该组件的强大功能,用户可以匿名进行一对多聊天。 贡献者和利益相关者可以在此处在其决策过程中进一步讨论提案。所有用户都保持匿名,并由他们的身份代表。

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import Identicon from 'react-identicons'
import { useState, useEffect } from 'react'
import { useNavigate } from 'react-router-dom'
import { truncate, useGlobalState } from '../store'
import { getMessages, sendMessage, CometChat } from '../CometChat'

const Messages = ({ gid }) => {
const navigator = useNavigate()
const [connectedAccount] = useGlobalState('connectedAccount')
const [message, setMessage] = useState('')
const [messages, setMessages] = useState([])

useEffect(() => {
getMessages(gid).then((msgs) => {
if (!!!msgs.code)
setMessages(msgs.filter((msg) => msg.category == 'message'))
})
listenForMessage(gid)
}, [gid])

const listenForMessage = (listenerID) => {
CometChat.addMessageListener(
listenerID,
new CometChat.MessageListener({
onTextMessageReceived: (message) => {
setMessages((prevState) => [...prevState, message])
scrollToEnd()
},
})
)
}

const handleMessage = (e) => {
e.preventDefault()
sendMessage(gid, message).then((msg) => {
if (!!!msg.code) {
setMessages((prevState) => [...prevState, msg])
setMessage('')
scrollToEnd()
}
})
}

const scrollToEnd = () => {
const elmnt = document.getElementById('messages-container')
elmnt.scrollTop = elmnt.scrollHeight
}

const dateToTime = (date) => {
let hours = date.getHours()
let minutes = date.getMinutes()
let ampm = hours >= 12 ? 'pm' : 'am'
hours = hours % 12
hours = hours ? hours : 12
minutes = minutes < 10 ? '0' + minutes : minutes
let strTime = hours + ':' + minutes + ' ' + ampm
return strTime
}

return (
<div className="p-8">
<div className="flex flex-row justify-start">
<button
className="px-4 py-2.5 bg-transparent hover:text-white
font-bold text-xs leading-tight uppercase
rounded-full shadow-md hover:bg-blue-700 hover:shadow-lg
focus:bg-blue-700 focus:shadow-lg focus:outline-none
focus:ring-0 active:bg-blue-800 active:shadow-lg
transition duration-150 ease-in-out"
onClick={() => navigator(`/proposal/${gid.substr(4)}`)}
>
Exit Chat
</button>
</div>

<div
id="messages-container"
className="h-[calc(100vh_-_16rem)] overflow-y-auto sm:pr-4 my-3"
>
{messages.map((message, i) =>
message.sender.uid.toLowerCase() != connectedAccount.toLowerCase() ? (
<div key={i} className="flex flex-row justify-start my-2">
<div className="flex flex-col bg-transparent w-80 p-3 px-5 rounded-3xl shadow-md">
<div className="flex flex-row justify-start items-center space-x-2">
<Identicon
string={message.sender.uid.toLowerCase()}
size={25}
className="h-10 w-10 object-contain shadow-md rounded-full mr-3"
/>
<span>@{truncate(message.sender.uid, 4, 4, 11)}</span>
<small>{dateToTime(new Date(message.sentAt * 1000))}</small>
</div>
<small className="leading-tight my-2">{message.text}</small>
</div>
</div>
) : (
<div key={i} className="flex flex-row justify-end my-2">
<div className="flex flex-col bg-transparent w-80 p-3 px-5 rounded-3xl shadow-md shadow-blue-300">
<div className="flex flex-row justify-start items-center space-x-2">
<Identicon
string={connectedAccount.toLowerCase()}
size={25}
className="h-10 w-10 object-contain shadow-md rounded-full mr-3"
/>
<span>@you</span>
<small>{dateToTime(new Date(message.sentAt * 1000))}</small>
</div>
<small className="leading-tight my-2">{message.text}</small>
</div>
</div>
)
)}
</div>

<form onSubmit={handleMessage} className="flex flex-row">
<input
className="w-full bg-transparent rounded-lg p-4
focus:ring-0 focus:outline-none border-gray-500"
type="text"
placeholder="Write a message..."
value={message}
onChange={(e) => setMessage(e.target.value)}
required
/>
<button type="submit" hidden>
send
</button>
</form>
</div>
)
}

export default Messages

8.7 创建DAO提案组件

web3 dao开发教程

该组件只是让你通过提供上图所示字段的信息来提出建议。请参阅下面的代码。

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import { useState } from 'react'
import { FaTimes } from 'react-icons/fa'
import { raiseProposal } from '../Dominion'
import { setGlobalState, useGlobalState } from '../store'
import { toast } from 'react-toastify'

const CreateProposal = () => {
const [createModal] = useGlobalState('createModal')
const [title, setTitle] = useState('')
const [amount, setAmount] = useState('')
const [beneficiary, setBeneficiary] = useState('')
const [description, setDescription] = useState('')

const handleSubmit = (e) => {
e.preventDefault()
if (!title || !description || !beneficiary || !amount) return
const proposal = { title, description, beneficiary, amount }

raiseProposal(proposal).then((proposed) => {
if (proposed) {
toast.success('Proposal created, reloading in progress...')
closeModal()
window.location.reload()
}
})
}

const closeModal = () => {
setGlobalState('createModal', 'scale-0')
resetForm()
}

const resetForm = () => {
setTitle('')
setAmount('')
setBeneficiary('')
setDescription('')
}

return (
<div
className={`fixed top-0 left-0 w-screen h-screen flex items-center
justify-center bg-black bg-opacity-50 transform z-50
transition-transform duration-300 ${createModal}`}
>
<div className="bg-white dark:bg-[#212936] shadow-xl shadow-[#122643] dark:shadow-gray-500 rounded-xl w-11/12 md:w-2/5 h-7/12 p-6">
<form className="flex flex-col">
<div className="flex flex-row justify-between items-center">
<p className="font-semibold">Raise Proposal</p>
<button
type="button"
onClick={closeModal}
className="border-0 bg-transparent focus:outline-none"
>
<FaTimes />
</button>
</div>

<div className="flex flex-row justify-between items-center border border-gray-500 dark:border-gray-500 rounded-xl mt-5">
<input
className="block w-full text-sm
bg-transparent border-0
focus:outline-none focus:ring-0"
type="text"
name="title"
placeholder="Title"
onChange={(e) => setTitle(e.target.value)}
value={title}
required
/>
</div>

<div className="flex flex-row justify-between items-center border border-gray-500 dark:border-gray-500 rounded-xl mt-5">
<input
className="block w-full text-sm
bg-transparent border-0
focus:outline-none focus:ring-0"
type="text"
name="amount"
placeholder="e.g 2.5 Eth"
onChange={(e) => setAmount(e.target.value)}
value={amount}
required
/>
</div>

<div className="flex flex-row justify-between items-center border border-gray-500 dark:border-gray-500 rounded-xl mt-5">
<input
className="block w-full text-sm
bg-transparent border-0
focus:outline-none focus:ring-0"
type="text"
name="beneficiary"
placeholder="Beneficiary Address"
onChange={(e) => setBeneficiary(e.target.value)}
value={beneficiary}
required
/>
</div>

<div className="flex flex-row justify-between items-center border border-gray-500 dark:border-gray-500 rounded-xl mt-5">
<textarea
className="block w-full text-sm resize-none
bg-transparent border-0
focus:outline-none focus:ring-0 h-20"
type="text"
name="description"
placeholder="Description"
onChange={(e) => setDescription(e.target.value)}
value={description}
required
></textarea>
</div>

<button
className="rounded-lg px-6 py-2.5 bg-blue-600
text-white font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out mt-5"
onClick={handleSubmit}
>
Submit Proposal
</button>
</form>
</div>
</div>
)
}

export default CreateProposal

8.8 DAO应用认证组件

web3 dao开发教程

该组件可帮助你参与聊天功能。如果你已经注册,则需要创建一个帐户或登录。通过登录,可以参与群聊,并在 web3.0 风格的提案中 与其他参与者进行匿名交谈。请参阅下面的代码。

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import { FaTimes } from 'react-icons/fa'
import { loginWithCometChat, signInWithCometChat } from '../CometChat'
import { setGlobalState, useGlobalState } from '../store'
import { toast } from 'react-toastify'

const ChatLogin = () => {
const [loginModal] = useGlobalState('loginModal')
const [connectedAccount] = useGlobalState('connectedAccount')

const handleSignUp = () => {
signInWithCometChat(connectedAccount, connectedAccount).then((user) => {
if (!!!user.code) {
toast.success('Account created, now click the login button.')
} else {
toast.error(user.message)
}
})
}

const handleLogin = () => {
loginWithCometChat(connectedAccount).then((user) => {
if (!!!user.code) {
setGlobalState('currentUser', user)
toast.success('Logged in successful!')
closeModal()
} else {
toast.error(user.message)
}
})
}

const closeModal = () => {
setGlobalState('loginModal', 'scale-0')
}

return (
<div
className={`fixed top-0 left-0 w-screen h-screen flex items-center
justify-center bg-black bg-opacity-50 transform z-50
transition-transform duration-300 ${loginModal}`}
>
<div className="bg-white dark:bg-[#212936] shadow-xl shadow-[#122643] dark:shadow-gray-500 rounded-xl w-11/12 md:w-2/5 h-7/12 p-6">
<div className="flex flex-col">
<div className="flex flex-row justify-between items-center">
<p className="font-semibold">Authenticate</p>
<button
type="button"
onClick={closeModal}
className="border-0 bg-transparent focus:outline-none"
>
<FaTimes />
</button>
</div>

<div className="my-2 font-light">
<span>
Once you login, you will be enabled to chat with other
stakeholders to make a well-informed voting.
</span>
</div>

<div
className="flex flex-row justify-between items-center mt-2"
role="group"
>
<button
className="rounded-lg px-6 py-2.5 bg-blue-600
text-white font-medium text-xs leading-tight
uppercase hover:bg-blue-700 focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out mt-5"
onClick={handleLogin}
>
Login
</button>

<button
className="rounded-lg px-6 py-2.5 bg-transparent
text-blue-600 font-medium text-xs leading-tight
uppercase hover:bg-blue-700 hover:text-white focus:bg-blue-700
focus:outline-none focus:ring-0 active:bg-blue-800
transition duration-150 ease-in-out mt-5
border-blue-600"
onClick={handleSignUp}
>
Create Account
</button>
</div>
</div>
</div>
</div>
)
}

export default ChatLogin

太棒了,让我们确保观点得到很好的体现……

8.9 DAO应用主页视图

web3 dao开发教程

此视图包括用于提供卓越 DAO 用户体验的header、banner和组件。proposals我们还使用 Tailwind CSS 的强大功能来实现这种外观。 看看下面的代码。

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import Banner from '../components/Banner'
import ChatLogin from '../components/ChatLogin'
import CreateProposal from '../components/CreateProposal'
import Header from '../components/Header'
import Proposals from '../components/Proposals'
const Home = () => {
return (
<>
<Header />
<Banner />
<Proposals />
<CreateProposal />
<ChatLogin />
</>
)
}
export default Home

8.10 DAO应用提案视图

web3 dao开发教程

此视图将标头、提案详细信息和选民组件耦合在一起,以呈现单个组件的平滑呈现。请参阅下面的代码。

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import Header from '../components/Header'
import ProposalDetails from '../components/ProposalDetails'
import Voters from '../components/Voters'
const Proposal = () => {
return (
<>
<Header />
<ProposalDetails />
<Voters />
</>
)
}
export default Proposal

8.11 DAO应用聊天视图

web3 dao开发教程

最后,聊天视图包含标题和消息组件,用于呈现高质量的聊天界面。请参阅下面的代码。

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import { useParams, useNavigate } from 'react-router-dom'
import { useEffect, useState } from 'react'
import { getGroup } from '../CometChat'
import { toast } from 'react-toastify'
import Header from '../components/Header'
import Messages from '../components/Messages'
const Chat = () => {
const { gid } = useParams()
const navigator = useNavigate()
const [group, setGroup] = useState(null)
useEffect(() => {
getGroup(gid).then((group) => {
if (!!!group.code) {
setGroup(group)
} else {
toast.warning('Please join the group first!')
navigator(`/proposal/${gid.substr(4)}`)
}
})
}, [gid])
return (
<>
<Header />
<Messages gid={gid} />
</>
)
}
export default Chat

太棒了,别忘了更新App.jsx文件。

8.12 DAO应用App组件

App 组件:用下面的代码替换 App 组件。

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import { useEffect, useState } from 'react'
import { Routes, Route } from 'react-router-dom'
import { loadWeb3 } from './Dominion'
import { ToastContainer } from 'react-toastify'
import { isUserLoggedIn } from './CometChat'
import Home from './views/Home'
import Proposal from './views/Proposal'
import Chat from './views/Chat'
import 'react-toastify/dist/ReactToastify.min.css'

const App = () => {
const [loaded, setLoaded] = useState(false)

useEffect(() => {
loadWeb3().then((res) => {
if (res) setLoaded(true)
})
isUserLoggedIn()
}, [])

return (
<div className="min-h-screen bg-white text-gray-900 dark:bg-[#212936] dark:text-gray-300">

{loaded ? (
<Routes>
<Route path="/" element={<Home />} />
<Route path="proposal/:id" element={<Proposal />} />
<Route path="chat/:gid" element={<Chat />} />
</Routes>
) : null}

<ToastContainer
position="top-center"
autoClose={5000}
hideProgressBar={false}
newestOnTop={false}
closeOnClick
rtl={false}
pauseOnFocusLoss
draggable
pauseOnHover
/>
</div>
)
}
export default App

8.13 DAO应用入口脚本

在src目录中将以下代码粘贴到各自的文件中。

index.jsx 文件:

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import React from 'react'
import ReactDOM from 'react-dom'
import { BrowserRouter } from 'react-router-dom'
import './index.css'
import App from './App'
import { initCometChat } from './CometChat'
initCometChat().then(() => {
ReactDOM.render(
<BrowserRouter>
<App />
</BrowserRouter>,
document.getElementById('root')
)
})

index.css 文件

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@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;500;600;700&display=swap');
* html {
padding: 0;
margin: 0;
box-sizing: border-box;
}
body {
margin: 0;
font-family: 'Open Sans', sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
@tailwind base;
@tailwind components;
@tailwind utilities;

CometChat.jsx

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import Web3 from 'web3'
import { setGlobalState, getGlobalState } from './store'
import DominionDAO from './abis/DominionDAO.json'

const { ethereum } = window

const connectWallet = async () => {
try {
if (!ethereum) return alert('Please install Metamask')
const accounts = await ethereum.request({ method: 'eth_requestAccounts' })
setGlobalState('connectedAccount', accounts[0])
} catch (error) {
console.log(JSON.stringify(error))
}
}

const raiseProposal = async ({ title, description, beneficiary, amount }) => {
try {
amount = window.web3.utils.toWei(amount.toString(), 'ether')
const contract = getGlobalState('contract')
const account = getGlobalState('connectedAccount')

let proposal = await contract.methods
.createProposal(title, description, beneficiary, amount)
.send({ from: account })

return proposal
} catch (error) {
console.log(error.message)
return error
}
}

const performContribute = async (amount) => {
try {
amount = window.web3.utils.toWei(amount.toString(), 'ether')
const contract = getGlobalState('contract')
const account = getGlobalState('connectedAccount')

let balance = await contract.methods
.contribute()
.send({ from: account, value: amount })
balance = window.web3.utils.fromWei(
balance.events.Action.returnValues.amount
)
return balance
} catch (error) {
console.log(error.message)
return error
}
}

const retrieveProposal = async (id) => {
const web3 = window.web3
try {
const contract = getGlobalState('contract')
const proposal = await contract.methods.getProposal(id).call().wait()
return {
id: proposal.id,
amount: web3.utils.fromWei(proposal.amount),
title: proposal.title,
description: proposal.description,
paid: proposal.paid,
passed: proposal.passed,
proposer: proposal.proposer,
upvotes: Number(proposal.upvotes),
downvotes: Number(proposal.downvotes),
beneficiary: proposal.beneficiary,
executor: proposal.executor,
duration: proposal.duration,
}
} catch (error) {
console.log(error)
}
}

const reconstructProposal = (proposal) => {
return {
id: proposal.id,
amount: window.web3.utils.fromWei(proposal.amount),
title: proposal.title,
description: proposal.description,
paid: proposal.paid,
passed: proposal.passed,
proposer: proposal.proposer,
upvotes: Number(proposal.upvotes),
downvotes: Number(proposal.downvotes),
beneficiary: proposal.beneficiary,
executor: proposal.executor,
duration: proposal.duration,
}
}

const getProposal = async (id) => {
try {
const proposals = getGlobalState('proposals')
return proposals.find((proposal) => proposal.id == id)
} catch (error) {
console.log(error)
}
}

const voteOnProposal = async (proposalId, supported) => {
try {
const contract = getGlobalState('contract')
const account = getGlobalState('connectedAccount')
const vote = await contract.methods
.performVote(proposalId, supported)
.send({ from: account })
return vote
} catch (error) {
console.log(error)
return error
}
}

const listVoters = async (id) => {
try {
const contract = getGlobalState('contract')
const votes = await contract.methods.getVotesOf(id).call()
return votes
} catch (error) {
console.log(error)
}
}

const payoutBeneficiary = async (id) => {
try {
const contract = getGlobalState('contract')
const account = getGlobalState('connectedAccount')
const balance = await contract.methods
.payBeneficiary(id)
.send({ from: account })
return balance
} catch (error) {
return error
}
}

const loadWeb3 = async () => {
try {
if (!ethereum) return alert('Please install Metamask')

window.web3 = new Web3(ethereum)
await ethereum.request({ method: 'eth_requestAccounts' })
window.web3 = new Web3(window.web3.currentProvider)

const web3 = window.web3
const accounts = await web3.eth.getAccounts()
setGlobalState('connectedAccount', accounts[0])

const networkId = await web3.eth.net.getId()
const networkData = DominionDAO.networks[networkId]

if (networkData) {
const contract = new web3.eth.Contract(
DominionDAO.abi,
networkData.address
)
const isStakeholder = await contract.methods
.isStakeholder()
.call({ from: accounts[0] })
const proposals = await contract.methods.getProposals().call()
const balance = await contract.methods.daoBalance().call()
const mybalance = await contract.methods
.getBalance()
.call({ from: accounts[0] })

setGlobalState('contract', contract)
setGlobalState('balance', web3.utils.fromWei(balance))
setGlobalState('mybalance', web3.utils.fromWei(mybalance))
setGlobalState('isStakeholder', isStakeholder)
setGlobalState('proposals', structuredProposals(proposals))
} else {
window.alert('DominionDAO contract not deployed to detected network.')
}
return true
} catch (error) {
alert('Please connect your metamask wallet!')
console.log(error)
return false
}
}

const structuredProposals = (proposals) => {
const web3 = window.web3
return proposals
.map((proposal) => ({
id: proposal.id,
amount: web3.utils.fromWei(proposal.amount),
title: proposal.title,
description: proposal.description,
paid: proposal.paid,
passed: proposal.passed,
proposer: proposal.proposer,
upvotes: Number(proposal.upvotes),
downvotes: Number(proposal.downvotes),
beneficiary: proposal.beneficiary,
executor: proposal.executor,
duration: proposal.duration,
}))
.reverse()
}

export {
loadWeb3,
connectWallet,
performContribute,
raiseProposal,
retrieveProposal,
voteOnProposal,
getProposal,
listVoters,
payoutBeneficiary,
}

9、启动DAO应用开发环境

第 1 步:使用下面的命令启动ganache-cli:

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ganache-cli -a

这将创建一些测试账户,每个账户都加载了 100 个以太币,当然,这些仅用于测试目的。见下图:

web3 dao开发教程

第 2 步:使用 Metamask 添加本地测试网络,如下图所示。

web3 dao开发教程

第 3 步: 单击帐户图标并选择导入帐户。

web3 dao开发教程

复制大约五个私钥并将它们一个接一个地添加到本地测试网络。见下图。

web3 dao开发教程

观察添加到本地测试网络的新帐户,预加载了 100 ETH。确保添加大约五个帐户,以便进行最大测试。见下图。

web3 dao开发教程

10、DAO智能合约部署

现在打开一个新终端并运行以下命令。

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truffle migrate
# or
truffle migrate --network rinkeby

上述命令会将智能合约部署到你的本地或 Infuria rinkeby 测试网络。

接下来,打开另一个终端并使用yarn start启动项目。

完成!!!


原文链接:How to Build a Glorious Web3.0 DAO with React, Solidity, and CometChat

汇智网翻译整理,转载请标明出处