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eth_getCode1// File: contracts/Crowdfunding.sol
2
3
4pragma solidity ^0.8.0;
5
6contract Crowdfunding {
7 string public name;
8 string public description;
9 uint256 public goal;
10 uint256 public deadline;
11 address public owner;
12 bool public paused;
13
14 enum CampaignState { Active, Successful, Failed }
15 CampaignState public state;
16
17 struct Tier {
18 string name;
19 uint256 amount;
20 uint256 backers;
21 }
22
23 struct Backer {
24 uint256 totalContribution;
25 mapping(uint256 => bool) fundedTiers;
26 }
27
28 Tier[] public tiers;
29 mapping(address => Backer) public backers;
30
31 modifier onlyOwner() {
32 require(msg.sender == owner, "Not the owner");
33 _;
34 }
35
36 modifier campaignOpen() {
37 require(state == CampaignState.Active, "Campaign is not active.");
38 _;
39 }
40
41 modifier notPaused() {
42 require(!paused, "Contract is paused.");
43 _;
44 }
45
46 constructor(
47 address _owner,
48 string memory _name,
49 string memory _description,
50 uint256 _goal,
51 uint256 _duratyionInDays
52 ) {
53 name = _name;
54 description = _description;
55 goal = _goal;
56 deadline = block.timestamp + (_duratyionInDays * 1 days);
57 owner = _owner;
58 state = CampaignState.Active;
59 }
60
61 function checkAndUpdateCampaignState() internal {
62 if(state == CampaignState.Active) {
63 if(block.timestamp >= deadline) {
64 state = address(this).balance >= goal ? CampaignState.Successful : CampaignState.Failed;
65 } else {
66 state = address(this).balance >= goal ? CampaignState.Successful : CampaignState.Active;
67 }
68 }
69 }
70
71 function fund(uint256 _tierIndex) public payable campaignOpen notPaused {
72 require(_tierIndex < tiers.length, "Invalid tier.");
73 require(msg.value == tiers[_tierIndex].amount, "Incorrect amount.");
74
75 tiers[_tierIndex].backers++;
76 backers[msg.sender].totalContribution += msg.value;
77 backers[msg.sender].fundedTiers[_tierIndex] = true;
78
79 checkAndUpdateCampaignState();
80 }
81
82 function addTier(
83 string memory _name,
84 uint256 _amount
85 ) public onlyOwner {
86 require(_amount > 0, "Amount must be greater than 0.");
87 tiers.push(Tier(_name, _amount, 0));
88 }
89
90 function removeTier(uint256 _index) public onlyOwner {
91 require(_index < tiers.length, "Tier does not exist.");
92 tiers[_index] = tiers[tiers.length -1];
93 tiers.pop();
94 }
95
96 function withdraw() public onlyOwner {
97 checkAndUpdateCampaignState();
98 require(state == CampaignState.Successful, "Campaign not successful.");
99
100 uint256 balance = address(this).balance;
101 require(balance > 0, "No balance to withdraw");
102
103 payable(owner).transfer(balance);
104 }
105
106 function getContractBalance() public view returns (uint256) {
107 return address(this).balance;
108 }
109
110 function refund() public {
111 checkAndUpdateCampaignState();
112 require(state == CampaignState.Failed, "Refunds not available.");
113 uint256 amount = backers[msg.sender].totalContribution;
114 require(amount > 0, "No contribution to refund");
115
116 backers[msg.sender].totalContribution = 0;
117 payable(msg.sender).transfer(amount);
118 }
119
120 function hasFundedTier(address _backer, uint256 _tierIndex) public view returns (bool) {
121 return backers[_backer].fundedTiers[_tierIndex];
122 }
123
124 function getTiers() public view returns (Tier[] memory) {
125 return tiers;
126 }
127
128 function togglePause() public onlyOwner {
129 paused = !paused;
130 }
131
132 function getCampaignStatus() public view returns (CampaignState) {
133 if (state == CampaignState.Active && block.timestamp > deadline) {
134 return address(this).balance >= goal ? CampaignState.Successful : CampaignState.Failed;
135 }
136 return state;
137 }
138
139 function extendDeadline(uint256 _daysToAdd) public onlyOwner campaignOpen {
140 deadline += _daysToAdd * 1 days;
141 }
142}
143// File: contracts/CrowdfundingFactory.sol
144
145
146pragma solidity ^0.8.0;
147
148
149contract CrowdfundingFactory {
150 address public owner;
151 bool public paused;
152
153 struct Campaign {
154 address campaignAddress;
155 address owner;
156 string name;
157 uint256 creationTime;
158 }
159
160 Campaign[] public campaigns;
161 mapping(address => Campaign[]) public userCampaigns;
162
163 modifier onlyOwner() {
164 require(msg.sender == owner, "Not owner.");
165 _;
166 }
167
168 modifier notPaused() {
169 require(!paused, "Factory is paused");
170 _;
171 }
172
173 constructor() {
174 owner = msg.sender;
175 }
176
177 function createCampaign(
178 string memory _name,
179 string memory _description,
180 uint256 _goal,
181 uint256 _durationInDays
182 ) external notPaused {
183 Crowdfunding newCampaign = new Crowdfunding(
184 msg.sender,
185 _name,
186 _description,
187 _goal,
188 _durationInDays
189 );
190 address campaignAddress = address(newCampaign);
191
192 Campaign memory campaign = Campaign({
193 campaignAddress: campaignAddress,
194 owner: msg.sender,
195 name: _name,
196 creationTime: block.timestamp
197 });
198
199 campaigns.push(campaign);
200 userCampaigns[msg.sender].push(campaign);
201 }
202
203 function getUserCampaigns(address _user) external view returns (Campaign[] memory) {
204 return userCampaigns[_user];
205 }
206
207 function getAllCampaigns() external view returns (Campaign[] memory) {
208 return campaigns;
209 }
210
211 function togglePause() external onlyOwner {
212 paused = !paused;
213 }
214}[
{
"type": "constructor",
"inputs": [],
"stateMutability": "nonpayable"
},
{
"name": "campaigns",
"type": "function",
"inputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "campaignAddress",
"type": "address",
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "creationTime",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "createCampaign",
"type": "function",
"inputs": [
{
"name": "_name",
"type": "string",
"internalType": "string"
},
{
"name": "_description",
"type": "string",
"internalType": "string"
},
{
"name": "_goal",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "_durationInDays",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "getAllCampaigns",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "tuple[]",
"components": [
{
"name": "campaignAddress",
"type": "address",
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "creationTime",
"type": "uint256",
"internalType": "uint256"
}
],
"internalType": "struct CrowdfundingFactory.Campaign[]"
}
],
"stateMutability": "view"
},
{
"name": "getUserCampaigns",
"type": "function",
"inputs": [
{
"name": "_user",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "tuple[]",
"components": [
{
"name": "campaignAddress",
"type": "address",
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "creationTime",
"type": "uint256",
"internalType": "uint256"
}
],
"internalType": "struct CrowdfundingFactory.Campaign[]"
}
],
"stateMutability": "view"
},
{
"name": "owner",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "paused",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "view"
},
{
"name": "togglePause",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "userCampaigns",
"type": "function",
"inputs": [
{
"name": "",
"type": "address",
"internalType": "address"
},
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "campaignAddress",
"type": "address",
"internalType": "address"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "creationTime",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
}
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