app.py

import os
import streamlit as st
from dotenv import load_dotenv
load_dotenv()

from crewai import Crew
from crewai.process import Process
from langchain_openai import ChatOpenAI

from tasks import CrewTasks
from agents import CrewAgents
from singleton import Singleton

# Initialize Singleton once
if "singleton_initialized" not in st.session_state:
    Singleton()
    st.session_state.singleton_initialized = True

# Title
st.title("🔧 Landing Page Generator using CrewAI")

# Input
user_input = st.text_area("💡 Describe your landing page idea:", placeholder="e.g., A modern, minimal landing page for an AI copywriting tool...")

# Run button
if st.button("🚀 Build Landing Page"):
    if not user_input.strip():
        st.warning("Please enter a landing page idea.")
    else:
        with st.spinner("👷‍♂️ Building with agents..."):

            tasks = CrewTasks()
            agents = CrewAgents()

            # Create Agents
            senior_engineer_agent = agents.senior_engineer_agent()
            qa_engineer_agent = agents.qa_engineer_agent()
            chief_qa_engineer_agent = agents.chief_qa_engineer_agent()
            feedback_agent = agents.feedback_agent()

            # Create Tasks
            code_landing_page = tasks.code_task(senior_engineer_agent, user_input)
            review_landing_page = tasks.review_task(qa_engineer_agent, user_input)
            approve_landing_page = tasks.evaluate_task(chief_qa_engineer_agent, user_input)
            get_feedback = tasks.get_feedback(feedback_agent, user_input)

            # Crew setup
            crew = Crew(
                agents=[
                    senior_engineer_agent,
                    qa_engineer_agent,
                    chief_qa_engineer_agent,
                    feedback_agent
                ],
                tasks=[
                    code_landing_page,
                    review_landing_page,
                    approve_landing_page,
                    get_feedback
                ],
                verbose=True,
                process=Process.sequential
            )

            # Kickoff
            result = crew.kickoff()

        st.success("✅ Generation Complete!")
        st.subheader("🧾 Final Landing Page Code:")
        st.code(result, language="html")