from blockchain import Blockchain
import gradio as gr
# Create a blockchain instance
blockchain = Blockchain()
# Define a function for displaying the entire blockchain
def display_blockchain():
if len(blockchain.chain) == 1:
return 'Blockchain has only the genesis block!'
blocks = []
for i, block in enumerate(blockchain.chain):
block_html = f'''
Block {block['index']}
{block['timestamp']}
Data: {block['data']}
Proof: {block['proof']}
Previous Hash: {block['previous_hash']}
'''
blocks.append(block_html)
if i < len(blockchain.chain) - 1:
chain_html = f'''
'''
blocks.append(chain_html)
blockchain_html = ''.join(blocks)
return f'''
{blockchain_html}
'''
# Define a function for adding data to the blockchain
def add_data(data):
previous_block = blockchain.get_previous_block()
previous_proof = previous_block['proof']
proof = blockchain.proof_of_work(previous_proof)
previous_hash = blockchain.hash(previous_block)
block = blockchain.create_block(proof, previous_hash, data)
message = f'Data "{data}" has been added to the blockchain!'
block_html = f'''
Block {block['index']}
{block['timestamp']}
Data: {block['data']}
Proof: {block['proof']}
Previous Hash: {block['previous_hash']}
'''
return message, block_html
# Create a Gradio interface for adding data to the blockchain
add_data_interface = gr.Interface(
fn=add_data,
inputs=gr.components.Textbox(label='Enter data to add to the blockchain:'),
outputs=[
gr.components.Textbox(label='Message'),
gr.components.HTML(label='Blockchain')
],
title='Add Data to Blockchain',
allow_flagging="never",
description='Add data to the blockchain and view the block.'
)
# Create a Gradio interface for displaying the entire blockchain
display_blockchain_interface = gr.Interface(
fn=display_blockchain,
inputs=None,
outputs=gr.components.HTML(label='Blockchain'),
title='Display Blockchain',
allow_flagging="never",
api_name='display_chain',
description='View the entire blockchain.'
)
# Combine the interfaces using the TabbedInterface
demo = gr.TabbedInterface(
[add_data_interface, display_blockchain_interface],
tab_names=['Add Data', 'Display Blockchain'],
title='Blockchain Explorer',
)
demo.launch()