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import json
import re
from typing import Any, Dict, List, Tuple
import gradio as gr
from smolagents import ToolCallingAgent
class CustomGradioUI:
"""Custom Gradio UI for better formatting of agent responses with source attribution."""
def __init__(self, agent: ToolCallingAgent):
self.agent = agent
self.setup_ui()
def setup_ui(self):
"""Setup the Gradio interface with custom components."""
with gr.Blocks(
title="Second Brain AI Assistant",
theme=gr.themes.Soft(),
css="""
.source-card {
border: 1px solid #e0e0e0;
border-radius: 8px;
padding: 12px;
margin: 8px 0;
background-color: #f8f9fa;
}
.source-title {
font-weight: bold;
color: #2c3e50;
margin-bottom: 4px;
}
.source-date {
font-size: 0.9em;
color: #6c757d;
margin-bottom: 8px;
}
.answer-section {
background-color: #ffffff;
border: 1px solid #dee2e6;
border-radius: 8px;
padding: 16px;
margin-bottom: 16px;
}
.tool-usage {
background-color: #e3f2fd;
border-left: 4px solid #2196f3;
padding: 8px 12px;
margin: 8px 0;
border-radius: 4px;
font-size: 0.9em;
}
"""
) as self.interface:
gr.Markdown("# 🧠 Second Brain AI Assistant")
gr.Markdown("Ask questions about your documents and get AI-powered insights with source attribution.")
with gr.Row():
with gr.Column(scale=4):
self.query_input = gr.Textbox(
label="Ask a question",
placeholder="What pricing objections were raised in the meetings?",
lines=2
)
with gr.Column(scale=1):
self.submit_btn = gr.Button("Ask", variant="primary", size="lg")
with gr.Row():
with gr.Column():
self.answer_output = gr.HTML(label="Answer")
self.sources_output = gr.HTML(label="Sources")
self.tools_output = gr.HTML(label="Tools Used")
with gr.Accordion("🔍 Debug: Raw Response", open=False):
self.debug_output = gr.Textbox(
label="Raw Agent Response",
lines=10,
max_lines=20,
interactive=False
)
# Event handlers
self.submit_btn.click(
fn=self.process_query,
inputs=[self.query_input],
outputs=[self.answer_output, self.sources_output, self.tools_output, self.debug_output]
)
self.query_input.submit(
fn=self.process_query,
inputs=[self.query_input],
outputs=[self.answer_output, self.sources_output, self.tools_output, self.debug_output]
)
def process_query(self, query: str) -> Tuple[str, str, str, str]:
"""Process the user query and return formatted response components."""
if not query.strip():
return "", "", "", ""
try:
# Run the agent
result = self.agent.run(query)
# Parse the result
answer, sources, tools_used = self.parse_agent_response(result)
# Debug information
print(f"DEBUG - Raw result: {str(result)[:200]}...")
print(f"DEBUG - Parsed answer: {answer[:100]}...")
print(f"DEBUG - Sources found: {len(sources)}")
print(f"DEBUG - Tools found: {tools_used}")
# Format outputs
answer_html = self.format_answer(answer)
sources_html = self.format_sources(sources)
tools_html = self.format_tools(tools_used)
debug_text = str(result)
return answer_html, sources_html, tools_html, debug_text
except Exception as e:
error_msg = f"<div style='color: #dc3545; padding: 12px; border: 1px solid #f5c6cb; border-radius: 4px; background-color: #f8d7da;'>Error: {str(e)}</div>"
return error_msg, "", "", str(e)
def parse_agent_response(self, result: Any) -> Tuple[str, List[Dict], List[str]]:
"""Parse the agent response to extract answer, sources, and tools used."""
answer = ""
sources = []
tools_used = []
# Convert result to string if it's not already
result_str = str(result)
# Extract tool usage from the result first
# Pattern 1: 🛠️ Used tool toolname
tool_pattern1 = r'🛠️ Used tool (\w+)'
tool_matches1 = re.findall(tool_pattern1, result_str)
# Pattern 2: Calling tool: 'toolname'
tool_pattern2 = r"Calling tool:\s*'([^']+)'"
tool_matches2 = re.findall(tool_pattern2, result_str)
# Combine both patterns
all_tool_matches = tool_matches1 + tool_matches2
tools_used = list(set(all_tool_matches)) # Remove duplicates
# Try multiple patterns to extract the answer
# Pattern 1: JSON format with "answer" key
json_match = re.search(r'{"answer":\s*"([^"]+)"}', result_str)
if json_match:
answer = json_match.group(1)
# Unescape the JSON string
answer = answer.replace('\\n', '\n').replace('\\"', '"')
else:
# Pattern 2: Look for "Final answer:" followed by content
final_answer_match = re.search(r'Final answer:\s*(.+?)(?=\n\n|\Z)', result_str, re.DOTALL)
if final_answer_match:
answer = final_answer_match.group(1).strip()
# Try to extract JSON from final answer
json_in_final = re.search(r'{"answer":\s*"([^"]+)"}', answer)
if json_in_final:
answer = json_in_final.group(1).replace('\\n', '\n').replace('\\"', '"')
else:
# Pattern 3: Use the entire result as answer if no specific pattern matches
answer = result_str
# Extract sources from the answer text using multiple patterns
# Pattern 1: (Document: "Title", Date)
source_pattern1 = r'\(Document:\s*"([^"]+)",\s*([^)]+)\)'
source_matches1 = re.findall(source_pattern1, answer)
# Pattern 2: (Document: Title, Date) - without quotes
source_pattern2 = r'\(Document:\s*([^,]+),\s*([^)]+)\)'
source_matches2 = re.findall(source_pattern2, answer)
# Pattern 3: (Document 1, Date) - numbered format
source_pattern3 = r'\(Document\s+(\d+),\s*([^)]+)\)'
source_matches3 = re.findall(source_pattern3, answer)
# Pattern 4: (from "Title" on Date) - new format seen in output
source_pattern4 = r'\(from\s+"([^"]+)"\s+on\s+([^)]+)\)'
source_matches4 = re.findall(source_pattern4, answer)
# Pattern 5: (from "Title" on Date) - without quotes
source_pattern5 = r'\(from\s+([^"]+)\s+on\s+([^)]+)\)'
source_matches5 = re.findall(source_pattern5, answer)
# Combine all patterns
all_source_matches = source_matches1 + source_matches2 + source_matches3 + source_matches4 + source_matches5
for doc_title, doc_date in all_source_matches:
# Clean up the title and date
clean_title = doc_title.strip().strip('"')
clean_date = doc_date.strip()
# Handle numbered documents (Document 1, Document 2, etc.)
if clean_title.isdigit():
clean_title = f"Document {clean_title}"
sources.append({
"title": clean_title,
"date": clean_date
})
# Remove duplicates based on title and date
unique_sources = []
seen = set()
for source in sources:
key = (source["title"], source["date"])
if key not in seen:
seen.add(key)
unique_sources.append(source)
return answer, unique_sources, tools_used
def format_answer(self, answer: str) -> str:
"""Format the answer with proper HTML structure."""
if not answer:
return "<div class='answer-section'><p>No answer provided.</p></div>"
# Remove source references from the answer text for cleaner display
answer = re.sub(r'\(Document:[^)]+\)', '', answer)
# Clean up extra whitespace
answer = re.sub(r'\s+', ' ', answer).strip()
# Format numbered lists and bullet points
answer = re.sub(r'\n\s*\d+\.\s*', '<br><br><strong>', answer) # Numbered lists
answer = re.sub(r'\n\s*•\s*', '<br>• ', answer) # Bullet points
answer = re.sub(r'\n\s*-\s*', '<br>• ', answer) # Dash points
# Format bold text (markdown style)
answer = re.sub(r'\*\*(.*?)\*\*', r'<strong>\1</strong>', answer)
# Format line breaks
answer = answer.replace('\n', '<br>')
# Clean up multiple line breaks
answer = re.sub(r'(<br>){3,}', '<br><br>', answer)
return f"""
<div class='answer-section'>
<h3>📝 Answer</h3>
<div style='line-height: 1.6; font-size: 16px;'>{answer}</div>
</div>
"""
def format_sources(self, sources: List[Dict]) -> str:
"""Format the sources with proper HTML structure."""
if not sources:
return "<div><h3>📚 Sources</h3><p>No sources found.</p></div>"
sources_html = "<div><h3>📚 Sources</h3>"
for i, source in enumerate(sources, 1):
sources_html += f"""
<div class='source-card'>
<div class='source-title'>{i}. {source['title']}</div>
<div class='source-date'>📅 {source['date']}</div>
</div>
"""
sources_html += "</div>"
return sources_html
def format_tools(self, tools_used: List[str]) -> str:
"""Format the tools used with proper HTML structure."""
if not tools_used:
return "<div><h3>🛠️ Tools Used</h3><p>No tools used.</p></div>"
tools_html = "<div><h3>🛠️ Tools Used</h3>"
for tool in tools_used:
tools_html += f"""
<div class='tool-usage'>
🔧 {tool.replace('_', ' ').title()}
</div>
"""
tools_html += "</div>"
return tools_html
def launch(self, **kwargs):
"""Launch the Gradio interface."""
return self.interface.launch(**kwargs)
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