VoteDao - Blockchain Voting System

📌 Overview

VoteDao is a smart contract written in Solidity that enables the creation and management of voting polls in a decentralized and secure manner. Users can vote on existing polls with specified options, and all votes are stored transparently on the blockchain.

🚀 Features

• Poll Creation: Only the admin (manager) can create new polls and set their duration.
• Secure Voting: Users can vote only once per poll.
• Voting Options: Yes, No, Not Interested.
• View Poll Details: Users can view active and completed polls.
• Transparency: All votes are recorded and viewable.
• Flexible Management: Ability to check if a poll is still active.

🛠️ Technologies Used

• Solidity - Smart contract development.
• OpenZeppelin - For managing poll identities with the Counters library.
• Web3.js - For interacting with the smart contract.
• Ethereum Blockchain - For secure data storage and transparency.

📜 Smart Contract Structure

• Admin: Only the admin can create polls.
• Poll Struct: Contains the poll's title, description, duration, and vote information.
• Vote Struct: Contains the user's address, chosen option, and vote time.
• Functions:
  • createPoll(...) - Creates a new poll.
  • vote(...) - Allows the user to vote.
  • getPollDetails(...) - Returns the poll's details.
  • getVotes(...) - Retrieves all votes for a specific poll.
  • getAllPolls() - Retrieves active and completed polls.
  • pollExpirationStatus(...) - Checks if the poll's duration has expired.
  • getUserPollsAlreadyVoted() - Retrieves all polls the user has already voted on.