Mastering Steem Blockchain Operations with JavaScript

🌟 Mastering Steem Blockchain Operations 🌟
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Hey friends. I’ve come across an exciting challenge that I’m eager to join this week. It’s called Domain Steem with JavaScript: Lesson #4 - Broadcasting operations part 1: Transferring and Posting, hosted by @alejos7ven. You can find more details and participate through this link: Domain Steem with JavaScript Lesson #4.

Image Source: Canva

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Today, we will explore an advanced JavaScript application that interacts on the Steem blockchain. This tutorial will show each component of our code, to explaining how it works and why each decision was made. Let's dive in!

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Setting Up the Environment

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These first lines set up our development environment:

• We import the steem library to commuincate with the Steem blockchain .
• readlineSync allows us to get user enter from the command line .
• We define empty constants for account credentials that should be filled with your Steem account details ( you should complete this )

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Delegation System

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The Global Properties Helper:

• Creates a Promise wrapper around getDynamicGlobalProperties
• Calculates per_mvest value by:
  • Converting total vesting fund to float .
  • Multiplying by 10^6 (for MVESTS calculation) .
  • Dividing with total vesting shares
• Returns global properties data

SP to VESTS Conversion:

• Converts (SP) to VESTS
• Takes SP ( steep power ) amount and per_mvests rate as parameters
• Uses this formula : (SP * 1000000 / per_mvests)
• Returns the result ( 6 decimal places )

The Delegation Process:

• gets current global properties
• ask user for:
  • Delegatee account name
  • Amount of SP to delegate
• Converts SP to VESTS using helper function
• Uses delegateVestingShares to perform the delegation
• Requires ACTIVE_KEY for security (you soulkd enter this)
• Includes comprehensive error handling

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Witness Voting Implementation

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This function demonstrates witness voting mechanics:

• It's defined as async to handle asynchronous blockchain operations
• We prompt the user to input a witness account name for testing

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The witness voting process:

• Uses Promise to handle asynchronous operations properly
• Calls steem.broadcast.accountWitnessVote with parameters:
  • ACTIVE_KEY: Required for witness voting operations
  • ACCOUNT_NAME: Your account name
  • witness: The witness account name
  • false: Indicates vote removal
  • Callback function to handle results

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Comment Posting System

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The comment posting function:

• Takes author and permlink parameters to identify the post
• Creates a standard comment body
• Generates metadata including the app name and version

Comment broadcasting details:

• Uses POSTING_KEY for authentication
• Creates a unique permlink by combining 're-', original permlink, and timestamp
• Empty title string as it's a comment
• Includes the comment body and metadata

Vote Detection System

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The vote detection system:

• Uses streamOperations to monitor blockchain operations in real-time
• Destructures the operation result into type and details
• Checks if the operation is a vote from our account
• Automatically posts a comment when a vote is detected

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Interactive Menu System

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User interface implementation:

• Displays a clear menu of available options
• Uses questionInt to ensure numeric input
• Returns the user's selection

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Main Program Execution

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The main execution loop:

• Wrapped in an IIFE (Immediately Invoked Function Expression)
• Uses async/await for proper asynchronous operation handling
• Implements an infinite loop with menu selection
• Includes error handling for robustness
• Provides clean program termination

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Security Considerations

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When using this code:

1. Never share your private keys
2. Store keys in environment variables

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Testing the Application

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To test this application:

1. enter your account credentials
2. Run the program using Node.js
3. Test witness voting with a known witness account
4. Try the vote detection system
5. Verify comments are posted correctly

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Steps for Testing the Bot and Transaction Tracking:

1. Run the Bot and Start Detection:

• Run the app according to the command provided in the image.

• After starting, the menu will appear, and you will choose Option 2 to start vote detection.

2. Vote Detection and Automatic Comment Posting:

• Vote on the publication SCT 2025-01-09.
• When the bot detects your vote, it will automatically post a comment.

Here's what happens:

• Before voting, there are no comments.

• After voting, the bot detects the vote and posts a comment automatically.

3. Verifying the Comment:

• The comment is posted

• You can also view the post and comment properties using Ecosynthesizer:

Post link with app info

• The app is identified as: "app": "kafio/1.0"

4. Transaction Tracking with SteemWorld or Ecosynthesizer:

• Perform a delegation, upvote, and reply, then use SteemWorld or Ecosynthesizer to verify the transactions.

Here are the links to verify the transactions in Ecosynthesizer:

• Upvote Transaction: View Transaction
• Reply Transaction: View Transaction
• Delegate Transaction: View Transaction

5. Witness Vote (AccountWitnessVote Method):

documentation of AccountWitnessVote Method : https://github.com/steemit/steem-js/tree/master/doc#account-witness-vote

• Since you don't have STEEM to transfer, you replaced the task with an AccountWitnessVote method. You can approve or unapprove a witness.

To choose a witness, visit Steemit Wallet Witnesses.

• Select the witness (e.g., "steemchiller").

• Unapprove the witness:
  • Unapprove Transaction

• Approve the witness:
  • Approve Transaction

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Conclusion

on this tutorial we show to interact with the Steem blockchain using JavaScript , We explored key features such as delegating Steem Power, voting for witnesses, posting comments automatically when voting, and handling blockchain transactions securely sol lucky. showcasing the blockchain's transparency , Overall, this guide offers developers the tools to automate and enhance their interactions with the Steem blockchain.

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I want to invite @naja, @maira27and @ransylove-1 join the contest.

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My introduction post on Steemit: link

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About the Author

👋 Hi, I’m Kafio!
Software Engineer | Data Science Enthusiast | Trading Buff | Development Geek | Computer Science Lover 💻📊📈

I’m passionate about exploring the intersection of technology and innovation, with a special interest in data science, trading, and software development. Whether it’s diving into the latest in computer science or developing new projects, I’m always excited to learn and share insights. 🚀

I also love to travel

Got questions or just want to connect? Feel free to reach out to me at: [email protected] 🌟

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