LLMSearchEngine / app.py
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from flask import Flask, request, render_template_string
from openai import OpenAI
import os
import json
from urllib.parse import quote
import html
app = Flask(__name__)
# Initialize OpenAI client with API key and base URL from environment variables
client = OpenAI(
api_key=os.environ["OPENAI_API_KEY"],
base_url=os.environ["OPENAI_BASE_URL"]
)
# Define constants for pagination
RESULTS_PER_PAGE = 10
TOTAL_RESULTS = 30 # Generate 30 results to allow pagination
def fetch_search_results(query):
"""Fetch search results from the LLM based on the user's query."""
if not query.strip():
return None, "Please enter a search query."
prompt = f"""
You are a search engine that provides informative and relevant results. For the given query '{query}',
generate {TOTAL_RESULTS} search results. Each result should include:
- 'title': A concise, descriptive title of the result.
- 'snippet': A short summary (2-3 sentences) of the content.
- 'url': A plausible, clickable URL where the information might be found (e.g., a real or hypothetical website).
Format the response as a JSON array of objects, where each object has 'title', 'snippet', and 'url' fields.
Ensure the results are diverse, relevant to the query, and the URLs are realistic (e.g., https://example.com/page).
"""
try:
response = client.chat.completions.create(
model="gemini-2.0-flash-lite", # Updated model name
messages=[
{"role": "system", "content": "You are a helpful search engine."},
{"role": "user", "content": prompt}
],
response_format={"type": "json_object"}
)
content = response.choices[0].message.content
results = json.loads(content)
# Handle different possible JSON structures
if isinstance(results, dict) and "results" in results:
results = results["results"]
elif isinstance(results, list):
pass
else:
return None, "Error: Unexpected JSON structure."
return results, None
except Exception as e:
error_msg = str(e)
if "404" in error_msg:
return None, f"Error 404: Model or endpoint not found. Check OPENAI_BASE_URL ({os.environ['OPENAI_BASE_URL']}) and model name."
elif "401" in error_msg:
return None, "Error 401: Invalid API key. Check OPENAI_API_KEY."
else:
return None, f"Error: {error_msg}"
@app.route('/', methods=['GET'])
def search_page():
"""Generate and serve the search results page styled like Google."""
query = request.args.get('query', '')
page = request.args.get('page', '1')
try:
page = int(page)
except ValueError:
page = 1
if not query.strip():
html_content = """
<html>
<head>
<title>LLM Search Engine</title>
<style>
body { font-family: Arial, sans-serif; margin: 0; padding: 20px; }
.header { text-align: center; margin-bottom: 20px; }
.logo { font-size: 36px; font-weight: bold; }
.logo span:nth-child(1) { color: #4285f4; } /* Blue */
.logo span:nth-child(2) { color: #ea4335; } /* Red */
.logo span:nth-child(3) { color: #fbbc05; } /* Yellow */
.logo span:nth-child(4) { color: #4285f4; } /* Blue */
.logo span:nth-child(5) { color: #34a853; } /* Green */
.search-box { max-width: 584px; margin: 0 auto; }
.search-box input[type="text"] {
width: 100%; padding: 12px 20px; font-size: 16px;
border: 1px solid #dfe1e5; border-radius: 24px;
box-shadow: 0 1px 6px rgba(32,33,36,0.28);
}
.search-box input[type="submit"] {
background-color: #f8f9fa; border: 1px solid #f8f9fa;
border-radius: 4px; color: #3c4043; font-size: 14px;
padding: 10px 16px; margin: 11px 4px; cursor: pointer;
}
.search-box input[type="submit"]:hover {
border: 1px solid #dadce0; box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.search-buttons { text-align: center; }
</style>
</head>
<body>
<div class="header">
<div class="logo">
<span>L</span><span>L</span><span>M</span><span> </span><span>Search</span>
</div>
</div>
<div class="search-box">
<form method="get" action="/">
<input type="text" name="query" placeholder="Search...">
<input type="hidden" name="page" value="1">
<div class="search-buttons">
<input type="submit" value="LLM Search">
<input type="submit" value="I'm Feeling Lucky" disabled>
</div>
</form>
</div>
</body>
</html>
"""
return render_template_string(html_content)
results, error = fetch_search_results(query)
if error:
html_content = f"""
<html>
<head>
<title>LLM Search Engine</title>
<style>
body {{ font-family: Arial, sans-serif; margin: 0; padding: 20px; }}
.header {{ text-align: center; margin-bottom: 20px; }}
.logo {{ font-size: 36px; font-weight: bold; }}
.logo span:nth-child(1) {{ color: #4285f4; }}
.logo span:nth-child(2) {{ color: #ea4335; }}
.logo span:nth-child(3) {{ color: #fbbc05; }}
.logo span:nth-child(4) {{ color: #4285f4; }}
.logo span:nth-child(5) {{ color: #34a853; }}
.search-box {{ max-width: 584px; margin: 0 auto; }}
.search-box input[type="text"] {{
width: 100%; padding: 12px 20px; font-size: 16px;
border: 1px solid #dfe1e5; border-radius: 24px;
box-shadow: 0 1px 6px rgba(32,33,36,0.28);
}}
.search-box input[type="submit"] {{
background-color: #f8f9fa; border: 1px solid #f8f9fa;
border-radius: 4px; color: #3c4043; font-size: 14px;
padding: 10px 16px; margin: 11px 4px; cursor: pointer;
}}
.search-box input[type="submit"]:hover {{
border: 1px solid #dadce0; box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}}
.search-buttons {{ text-align: center; }}
.error {{ color: red; text-align: center; }}
</style>
</head>
<body>
<div class="header">
<div class="logo">
<span>L</span><span>L</span><span>M</span><span> </span><span>Search</span>
</div>
</div>
<div class="search-box">
<form method="get" action="/">
<input type="text" name="query" value="{html.escape(query)}">
<input type="hidden" name="page" value="1">
<div class="search-buttons">
<input type="submit" value="LLM Search">
<input type="submit" value="I'm Feeling Lucky" disabled>
</div>
</form>
</div>
<p class="error">{error}</p>
</body>
</html>
"""
return render_template_string(html_content)
# Calculate pagination boundaries
start_idx = (page - 1) * RESULTS_PER_PAGE
end_idx = start_idx + RESULTS_PER_PAGE
total_pages = (len(results) + RESULTS_PER_PAGE - 1) // RESULTS_PER_PAGE
# Ensure indices are within bounds
if start_idx >= len(results):
html_content = f"""
<html>
<head>
<title>LLM Search Engine</title>
<style>
body {{ font-family: Arial, sans-serif; margin: 0; padding: 20px; }}
.header {{ text-align: center; margin-bottom: 20px; }}
.logo {{ font-size: 36px; font-weight: bold; }}
.logo span:nth-child(1) {{ color: #4285f4; }}
.logo span:nth-child(2) {{ color: #ea4335; }}
.logo span:nth-child(3) {{ color: #fbbc05; }}
.logo span:nth-child(4) {{ color: #4285f4; }}
.logo span:nth-child(5) {{ color: #34a853; }}
.search-box {{ max-width: 584px; margin: 0 auto; }}
.search-box input[type="text"] {{
width: 100%; padding: 12px 20px; font-size: 16px;
border: 1px solid #dfe1e5; border-radius: 24px;
box-shadow: 0 1px 6px rgba(32,33,36,0.28);
}}
.search-box input[type="submit"] {{
background-color: #f8f9fa; border: 1px solid #f8f9fa;
border-radius: 4px; color: #3c4043; font-size: 14px;
padding: 10px 16px; margin: 11px 4px; cursor: pointer;
}}
.search-box input[type="submit"]:hover {{
border: 1px solid #dadce0; box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}}
.search-buttons {{ text-align: center; }}
</style>
</head>
<body>
<div class="header">
<div class="logo">
<span>L</span><span>L</span><span>M</span><span> </span><span>Search</span>
</div>
</div>
<div class="search-box">
<form method="get" action="/">
<input type="text" name="query" value="{html.escape(query)}">
<input type="hidden" name="page" value="1">
<div class="search-buttons">
<input type="submit" value="LLM Search">
<input type="submit" value="I'm Feeling Lucky" disabled>
</div>
</form>
</div>
<p style="text-align: center;">No more results to display.</p>
</body>
</html>
"""
return render_template_string(html_content)
paginated_results = results[start_idx:end_idx]
# Generate full HTML page styled like Google
html_content = f"""
<html>
<head>
<title>LLM Search Engine</title>
<style>
body {{
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
color: #202124;
}}
.header {{
text-align: center;
padding: 20px 0;
}}
.logo {{
font-size: 36px;
font-weight: bold;
}}
.logo span:nth-child(1) {{ color: #4285f4; }}
.logo span:nth-child(2) {{ color: #ea4335; }}
.logo span:nth-child(3) {{ color: #fbbc05; }}
.logo span:nth-child(4) {{ color: #4285f4; }}
.logo span:nth-child(5) {{ color: #34a853; }}
.search-box {{
max-width: 584px;
margin: 0 auto 20px;
}}
.search-box input[type="text"] {{
width: 100%;
padding: 12px 20px;
font-size: 16px;
border: 1px solid #dfe1e5;
border-radius: 24px;
box-shadow: 0 1px 6px rgba(32,33,36,0.28);
outline: none;
}}
.search-box input[type="submit"] {{
background-color: #f8f9fa;
border: 1px solid #f8f9fa;
border-radius: 4px;
color: #3c4043;
font-size: 14px;
padding: 10px 16px;
margin: 11px 4px;
cursor: pointer;
}}
.search-box input[type="submit"]:hover {{
border: 1px solid #dadce0;
box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}}
.search-buttons {{
text-align: center;
}}
.results {{
max-width: 652px;
margin: 0 auto;
}}
.search-result {{
margin-bottom: 28px;
}}
.search-result a {{
color: #1a0dab;
font-size: 20px;
text-decoration: none;
}}
.search-result a:hover {{
text-decoration: underline;
}}
.search-result .url {{
color: #006621;
font-size: 14px;
line-height: 20px;
}}
.search-result p {{
color: #4d5156;
font-size: 14px;
line-height: 22px;
margin: 0;
}}
.pagination {{
text-align: center;
margin: 40px 0;
}}
.pagination a, .pagination span {{
color: #1a0dab;
font-size: 14px;
margin: 0 8px;
text-decoration: none;
}}
.pagination a:hover {{
text-decoration: underline;
}}
</style>
</head>
<body>
<div class="header">
<div class="logo">
<span>L</span><span>L</span><span>M</span><span> </span><span>Search</span>
</div>
</div>
<div class="search-box">
<form method="get" action="/">
<input type="text" name="query" value="{html.escape(query)}">
<input type="hidden" name="page" value="1">
<div class="search-buttons">
<input type="submit" value="LLM Search">
<input type="submit" value="I'm Feeling Lucky" disabled>
</div>
</form>
</div>
<div class="results">
<h2 style="font-size: 18px; color: #70757a; margin-bottom: 20px;">Results for '{html.escape(query)}' (Page {page} of {total_pages})</h2>
"""
for result in paginated_results:
title = html.escape(result.get("title", "No title"))
snippet = html.escape(result.get("snippet", "No snippet"))
url = html.escape(result.get("url", "#"))
html_content += f"""
<div class="search-result">
<a href="{url}" target="_blank">{title}</a>
<div class="url">{url}</div>
<p>{snippet}</p>
</div>
"""
# Pagination links
encoded_query = quote(query)
prev_link = f'<a href="/?query={encoded_query}&page={page-1}">Previous</a>' if page > 1 else '<span>Previous</span>'
next_link = f'<a href="/?query={encoded_query}&page={page+1}">Next</a>' if page < total_pages else '<span>Next</span>'
html_content += f"""
</div>
<div class="pagination">
{prev_link}
<span>Page {page} of {total_pages}</span>
{next_link}
</div>
</body>
</html>
"""
return render_template_string(html_content)
if __name__ == '__main__':
app.run(debug=True, host='0.0.0.0', port=int(os.environ.get("PORT", 5000)))