import streamlit as st
import requests
from fpdf import FPDF
import os
import time
from datetime import datetime
import groq

# API keys (replace with your actual keys)
mistral_api_key = os.getenv("MISTRAL_API_KEY", "your_mistral_key_here")
groq_api_key = os.getenv("GROQ_API_KEY", "your_groq_key_here")

# Initialize Groq client
groq_client = groq.Client(api_key=groq_api_key)

def call_mistral_api(prompt):
    url = "https://api.mistral.ai/v1/chat/completions"
    headers = {
        "Authorization": f"Bearer {mistral_api_key}",
        "Content-Type": "application/json"
    }
    payload = {
        "model": "mistral-medium",
        "messages": [{"role": "user", "content": prompt}]
    }
    try:
        response = requests.post(url, headers=headers, json=payload)
        response.raise_for_status()
        return response.json()['choices'][0]['message']['content']
    except Exception as err:
        return f"Error: {err}"

def call_groq_api(prompt):
    try:
        response = groq_client.chat.completions.create(
            model="llama-3.3-70b-versatile",
            messages=[{"role": "user", "content": prompt}]
        )
        return response.choices[0].message.content
    except Exception as err:
        return f"Error: {err}"

def analyze_requirement(requirement):
    type_prompt = f"Classify as Functional or Non-Functional in one word:\n{requirement}\nType:"
    req_type = call_mistral_api(type_prompt).strip()
    
    domain_prompt = f"Classify domain in one word:\n{requirement}\nDomain:"
    domain = call_mistral_api(domain_prompt).strip()
    
    defects_prompt = f"List major defects (1-2 words each):\n{requirement}\nDefects:"
    defects = call_groq_api(defects_prompt).strip()
    
    rewritten_prompt = f"Rewrite to address defects:\n{requirement}\nRewritten:"
    rewritten = call_groq_api(rewritten_prompt).strip()
    
    return {
        "Requirement": requirement,
        "Type": req_type,
        "Domain": domain,
        "Defects": defects,
        "Rewritten": rewritten
    }

def generate_pdf_report(results):
    pdf = FPDF()
    pdf.add_page()
    pdf.set_font("Arial", size=12)
    
    # PDF content (same as previous)
    # ... [Keep the existing PDF generation code] ...
    
    pdf_output = "requirements_report.pdf"
    pdf.output(pdf_output)
    return pdf_output

def main():
    st.markdown("""
        <style>
            @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');
            * { font-family: 'Poppins', sans-serif; }
            .main-container { max-width: 800px; margin: 0 auto; padding: 2rem; }
            .gradient-header { 
                background: linear-gradient(45deg, #4F46E5, #1E40AF);
                color: white; 
                padding: 2rem; 
                border-radius: 15px;
                margin-bottom: 2rem;
            }
            .team-card {
                background: #f8f9fa;
                padding: 1.5rem;
                border-radius: 15px;
                margin: 1rem 0;
                box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            }
            .result-card {
                background: white;
                padding: 1.5rem;
                border-radius: 15px;
                margin: 1rem 0;
                box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            }
            .badge {
                padding: 0.5rem 1rem;
                border-radius: 20px;
                font-size: 0.9rem;
                margin-right: 0.5rem;
                display: inline-block;
            }
            .type-badge { background: #4F46E510; color: #4F46E5; }
            .domain-badge { background: #10B98110; color: #10B981; }
            .defect-badge { background: #EF444410; color: #EF4444; }
            .animate-hover { transition: transform 0.2s; }
            .animate-hover:hover { transform: translateY(-2px); }
            .styled-textarea {
                border: 2px solid #e0e0e0 !important;
                border-radius: 10px !important;
                padding: 1rem !important;
            }
        </style>
    """, unsafe_allow_html=True)

    st.markdown("""
        <div class="main-container">
            <div class="gradient-header">
                <h1 style="margin: 0; font-weight: 600;">🧠 AI Requirement Analyzer</h1>
                <p style="margin: 0.5rem 0 0; opacity: 0.9;">Smart Analysis & Quality Enhancement System</p>
            </div>
            
            <div class="team-card">
                <h3 style="margin: 0 0 1rem;">👥 Team Members</h3>
                <div style="display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;">
                    <div style="background: #4F46E510; padding: 0.5rem; border-radius: 10px;">
                        <p style="margin: 0; color: #4F46E5;">Sadia</p>
                    </div>
                    <div style="background: #10B98110; padding: 0.5rem; border-radius: 10px;">
                        <p style="margin: 0; color: #10B981;">Areeba</p>
                    </div>
                    <div style="background: #EF444410; padding: 0.5rem; border-radius: 10px;">
                        <p style="margin: 0; color: #EF4444;">Rabbia</p>
                    </div>
                    <div style="background: #3B82F610; padding: 0.5rem; border-radius: 10px;">
                        <p style="margin: 0; color: #3B82F6;">Tesmia</p>
                    </div>
                </div>
            </div>
            
            <div style="margin: 2rem 0;">
                <h2>📥 Input Requirements</h2>
                <p style="opacity: 0.8;">Enter multiple requirements separated by new lines or periods</p>
    """, unsafe_allow_html=True)

    input_text = st.text_area("", height=200, key="input_area", 
                            help="Example:\n1. The system must handle 1000 users\n2. User interface should be responsive")

    if st.button("🚀 Start Analysis", key="analyze_btn", use_container_width=True):
        if not input_text.strip():
            st.warning("⚠️ Please enter requirements to analyze")
        else:
            requirements = [req.strip() for req in input_text.replace("\n", ".").split(".") if req.strip()]
            results = []
            progress_bar = st.progress(0)
            
            with st.spinner("🔍 Analyzing requirements..."):
                for i, req in enumerate(requirements):
                    results.append(analyze_requirement(req))
                    progress_bar.progress((i+1)/len(requirements))
                    time.sleep(0.1)

            st.success("✅ Analysis completed!")
            st.markdown("---")
            
            for i, result in enumerate(results, 1):
                st.markdown(f"""
                    <div class="result-card animate-hover">
                        <h3 style="margin: 0 0 1rem;">🔖 Requirement R{i}</h3>
                        <p style="font-size: 1.1rem; margin-bottom: 1.5rem;">{result['Requirement']}</p>
                        
                        <div style="display: flex; gap: 1rem; margin-bottom: 1rem;">
                            <span class="badge type-badge">📝 {result['Type']}</span>
                            <span class="badge domain-badge">🌍 {result['Domain']}</span>
                            <span class="badge defect-badge">⚠️ {result['Defects']}</span>
                        </div>
                        
                        <div style="background: #f8f9fa; padding: 1rem; border-radius: 10px;">
                            <p style="margin: 0; color: #3B82F6;">✏️ Optimized Version:</p>
                            <p style="margin: 0.5rem 0 0; font-weight: 500;">{result['Rewritten']}</p>
                        </div>
                    </div>
                """, unsafe_allow_html=True)

            st.markdown("---")
            st.markdown("### 📄 Generate Report")
            pdf_report = generate_pdf_report(results)
            with open(pdf_report, "rb") as f:
                st.download_button(
                    label="📥 Download PDF Report",
                    data=f,
                    file_name="requirements_analysis.pdf",
                    mime="application/pdf",
                    use_container_width=True,
                    key="download_btn"
                )

    st.markdown("</div>", unsafe_allow_html=True)

if __name__ == "__main__":
    main()