"""
Gradio 6 User Interface for Disaster Risk Construction Planner
Main application entry point
"""

import os
from pathlib import Path
from dotenv import load_dotenv

# Load environment variables from .env file
env_path = Path(__file__).parent / '.env'
load_dotenv(dotenv_path=env_path)

import gradio as gr
import asyncio
import logging
import json
from typing import Optional, Tuple
from orchestrator_client import get_orchestrator_client
from components import (
    format_risk_display,
    format_recommendations_display,
    format_costs_display,
    format_facilities_map,
    format_visualization_display,
    format_house_specs_display
)
from models import Coordinates

# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


def process_construction_plan(
    building_type: str,
    latitude: float,
    longitude: float,
    building_area: Optional[float] = None,
    progress=gr.Progress()
) -> Tuple[str, str, str, str, str, str, str, str, str]:
    """
    Handler function to process construction plan request
    
    Args:
        building_type: Selected building type
        latitude: Latitude coordinate
        longitude: Longitude coordinate
        building_area: Optional building area in square meters
        progress: Gradio progress tracker
        
    Returns:
        Tuple of formatted results for each tab (status, risk, house_specs, recommendations, costs, facilities, visualization, visualization_image, visualization_download)
    """
    try:
        # Update progress
        progress(0, desc="Initializing...")
        
        # Get orchestrator client
        client = get_orchestrator_client()
        
        # Progress callback
        def update_progress(message: str):
            logger.info(message)
            progress(0.5, desc=message)
        
        # Call orchestrator agent
        progress(0.2, desc="Connecting to Orchestrator Agent...")
        
        result = asyncio.run(
            client.generate_construction_plan(
                building_type=building_type,
                latitude=latitude,
                longitude=longitude,
                building_area=building_area,
                progress_callback=update_progress
            )
        )
        
        progress(0.9, desc="Formatting results...")
        
        # Check for errors
        if not result.get('success', False):
            error = result.get('error', {})
            error_message = f"""
            <div style="padding: 20px; background: #fef2f2; border-radius: 8px; border: 2px solid #dc2626;">
                <h2 style="color: #dc2626; margin-top: 0;">❌ Error</h2>
                <p><strong>Code:</strong> {error.get('code', 'UNKNOWN')}</p>
                <p><strong>Message:</strong> {error.get('message', 'An unknown error occurred')}</p>
                {f"<p><strong>Retry Possible:</strong> {'Yes' if error.get('retry_possible', False) else 'No'}</p>" if 'retry_possible' in error else ''}
            </div>
            """
            return (
                error_message,  # status
                error_message,  # risk
                error_message,  # house_specs
                error_message,  # recommendations
                error_message,  # costs
                error_message,  # facilities
                error_message,  # visualization
                None,           # visualization_image
                None            # visualization_download
            )
        
        # Extract construction plan (keep as dict for easier handling)
        construction_plan = result.get('construction_plan')
        
        if not construction_plan:
            error_message = """
            <div style="padding: 20px; background: #fef2f2; border-radius: 8px;">
                <h2 style="color: #dc2626;">❌ No Data</h2>
                <p>Construction plan data is missing from the response.</p>
            </div>
            """
            return (error_message,) * 7 + (None, None)
        
        # Format status/executive summary
        status_html = _format_status(construction_plan)
        
        # Extract data (work with dicts directly)
        risk_assessment = construction_plan.get('risk_assessment', {})
        house_specs = construction_plan.get('house_specifications', {})
        recommendations = construction_plan.get('construction_recommendations', {})
        costs = construction_plan.get('material_costs', {})
        facilities = construction_plan.get('critical_facilities', {})
        visualization = construction_plan.get('visualization', {})
        
        # Debug logging
        logger.info(f"Construction plan type: {type(construction_plan)}")
        logger.info(f"Risk assessment type: {type(risk_assessment)}")
        logger.info(f"Risk assessment keys: {risk_assessment.keys() if isinstance(risk_assessment, dict) else 'not a dict'}")
        logger.info(f"Risk assessment success field: {risk_assessment.get('success') if isinstance(risk_assessment, dict) else 'N/A'}")
        
        # Format risk display
        risk_html = format_risk_display(risk_assessment)
        
        # Format house specifications
        try:
            house_specs_html = format_house_specs_display(house_specs)
        except Exception as e:
            logger.error(f"Error formatting house specifications: {e}")
            house_specs_html = "<div style='padding: 20px;'><h3>🏗️ House Specifications</h3><p>House specifications data unavailable</p></div>"
        
        # Format recommendations
        try:
            recommendations_html = format_recommendations_display(recommendations)
        except Exception as e:
            logger.error(f"Error formatting recommendations: {e}")
            recommendations_html = f"<div style='padding: 20px;'><h3>📋 Recommendations</h3><pre>{str(recommendations)[:1000]}</pre></div>"
        
        # Format costs
        try:
            costs_html = format_costs_display(costs)
        except Exception as e:
            logger.error(f"Error formatting costs: {e}")
            costs_html = f"<div style='padding: 20px;'><h3>💰 Costs</h3><pre>{str(costs)[:1000]}</pre></div>"
        
        # Format facilities
        try:
            site_coords = Coordinates(latitude=latitude, longitude=longitude)
            facilities_html, map_data = format_facilities_map(facilities, site_coords)
        except Exception as e:
            logger.error(f"Error formatting facilities: {e}")
            facilities_html = f"<div style='padding: 20px;'><h3>📍 Facilities</h3><pre>{str(facilities)[:1000]}</pre></div>"
            map_data = ""
        
        # Add map data to facilities HTML if available
        if map_data:
            facilities_html += map_data
        
        # Format visualization
        try:
            visualization_html, visualization_image, visualization_download = format_visualization_display(visualization)
        except Exception as e:
            logger.error(f"Error formatting visualization: {e}")
            visualization_html = "<div style='padding: 20px;'><h3>🎨 Visualization</h3><p>Visualization data unavailable</p></div>"
            visualization_image = None
            visualization_download = None
        
        progress(1.0, desc="Complete!")
        
        return (
            status_html,
            risk_html,
            house_specs_html,
            recommendations_html,
            costs_html,
            facilities_html,
            visualization_html,
            visualization_image,
            visualization_download
        )
        
    except Exception as e:
        logger.error(f"Error processing construction plan: {str(e)}", exc_info=True)
        error_message = f"""
        <div style="padding: 20px; background: #fef2f2; border-radius: 8px; border: 2px solid #dc2626;">
            <h2 style="color: #dc2626; margin-top: 0;">❌ Unexpected Error</h2>
            <p><strong>Message:</strong> {str(e)}</p>
            <p>Please check the logs for more details.</p>
        </div>
        """
        return (error_message,) * 7 + (None, None)


def _format_status(construction_plan) -> str:
    """Format executive summary and status"""
    # Handle both dict and object formats
    if isinstance(construction_plan, dict):
        metadata = construction_plan.get('metadata', {})
        summary = construction_plan.get('executive_summary', {})
    else:
        metadata = construction_plan.metadata if hasattr(construction_plan, 'metadata') else {}
        summary = construction_plan.executive_summary if hasattr(construction_plan, 'executive_summary') else {}
    
    # Extract values safely
    building_type = metadata.get('building_type', 'Unknown') if isinstance(metadata, dict) else getattr(metadata, 'building_type', 'Unknown')
    location = metadata.get('location', {}) if isinstance(metadata, dict) else getattr(metadata, 'location', {})
    location_name = location.get('name', 'Unknown') if isinstance(location, dict) else getattr(location, 'name', 'Unknown')
    coordinates = metadata.get('coordinates', {}) if isinstance(metadata, dict) else getattr(metadata, 'coordinates', {})
    lat = coordinates.get('latitude', 0) if isinstance(coordinates, dict) else getattr(coordinates, 'latitude', 0)
    lon = coordinates.get('longitude', 0) if isinstance(coordinates, dict) else getattr(coordinates, 'longitude', 0)
    building_area = metadata.get('building_area') if isinstance(metadata, dict) else getattr(metadata, 'building_area', None)
    generated_at = metadata.get('generated_at', 'Unknown') if isinstance(metadata, dict) else getattr(metadata, 'generated_at', 'Unknown')
    overall_risk = summary.get('overall_risk', 'Unknown') if isinstance(summary, dict) else getattr(summary, 'overall_risk', 'Unknown')
    
    html = f"""
    <div style="padding: 20px;">
        <h2 style="margin-top: 0; color: #ffffff !important; font-weight: 700;">📊 Construction Plan Summary</h2>
        
        <div style="background: white; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); border: 1px solid #e2e8f0;">
            <h3 style="color: #1e40af !important; margin-top: 0; font-weight: 600;">📋 Project Information</h3>
            <p style="color: #0f172a !important; margin: 8px 0;"><strong style="color: #0f172a !important;">Building Type:</strong> {building_type.replace('_', ' ').title()}</p>
            <p style="color: #0f172a !important; margin: 8px 0;"><strong style="color: #0f172a !important;">Location:</strong> {location_name}</p>
            <p style="color: #0f172a !important; margin: 8px 0;"><strong style="color: #0f172a !important;">Coordinates:</strong> {lat:.4f}°N, {lon:.4f}°E</p>
            {f"<p style='color: #0f172a !important; margin: 8px 0;'><strong style='color: #0f172a !important;'>Building Area:</strong> {building_area:.2f} sq meters</p>" if building_area else ""}
            <p style="color: #0f172a !important; margin: 8px 0;"><strong style="color: #0f172a !important;">Generated:</strong> {generated_at}</p>
        </div>
        
        <div style="background: white; padding: 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); border: 1px solid #e2e8f0;">
            <h3 style="color: #b91c1c !important; margin-top: 0; font-weight: 600;">🛡️ Overall Risk Assessment</h3>
            <p style="font-size: 1.1em; line-height: 1.6; color: #0f172a !important;">{overall_risk}</p>
        </div>
    """
    
    # Critical concerns
    critical_concerns = summary.get('critical_concerns', []) if isinstance(summary, dict) else getattr(summary, 'critical_concerns', [])
    if critical_concerns:
        html += """
        <div style="background: white; padding: 20px; border-radius: 8px; margin-bottom: 20px; border-left: 5px solid #dc2626; box-shadow: 0 2px 4px rgba(0,0,0,0.1); border: 1px solid #fecaca;">
            <h3 style="color: #dc2626 !important; margin-top: 0; font-weight: 600;">⚠️ Critical Concerns</h3>
            <ul style="line-height: 1.8; color: #0f172a !important;">
        """
        for concern in critical_concerns:
            html += f"<li style='color: #0f172a !important;'><strong style='color: #dc2626 !important;'>{concern}</strong></li>"
        html += """
            </ul>
        </div>
        """
    
    # Key recommendations
    key_recommendations = summary.get('key_recommendations', []) if isinstance(summary, dict) else getattr(summary, 'key_recommendations', [])
    if key_recommendations:
        html += """
        <div style="background: white; padding: 20px; border-radius: 8px; margin-bottom: 20px; border-left: 5px solid #f59e0b; box-shadow: 0 2px 4px rgba(0,0,0,0.1); border: 1px solid #fde68a;">
            <h3 style="color: #d97706 !important; margin-top: 0; font-weight: 600;">🎯 Key Recommendations</h3>
            <ol style="line-height: 1.8; font-weight: 500; color: #0f172a !important;">
        """
        for rec in key_recommendations:
            html += f"<li style='color: #0f172a !important;'>{rec}</li>"
        html += """
            </ol>
        </div>
        """
    
    # Building-specific notes
    building_specific_notes = summary.get('building_specific_notes', []) if isinstance(summary, dict) else getattr(summary, 'building_specific_notes', [])
    if building_specific_notes:
        html += """
        <div style="background: white; padding: 20px; border-radius: 8px; margin-bottom: 20px; border-left: 5px solid #3b82f6; box-shadow: 0 2px 4px rgba(0,0,0,0.1); border: 1px solid #bfdbfe;">
            <h3 style="color: #1e40af !important; margin-top: 0; font-weight: 600;">📝 Building-Specific Notes</h3>
            <ul style="line-height: 1.8; color: #0f172a !important;">
        """
        for note in building_specific_notes:
            html += f"<li style='color: #0f172a !important;'>{note}</li>"
        html += """
            </ul>
        </div>
        """
    
    html += """
    </div>
    """
    
    return html


# Create Gradio interface
def create_interface():
    """Create and configure Gradio interface with tabbed output"""
    
    with gr.Blocks(
        title="Filo - DRM focused Construction Planner"
    ) as app:
        gr.Markdown(
            """
            # 🏗️ Filo - DRM focused Construction Planner
            ### Plan disaster-resistant construction in the Philippines
            
            This tool helps you assess disaster risks, get construction recommendations, 
            estimate material costs, and locate critical facilities for your building project.
            """
        )
        
        # Input section at the top
        gr.Markdown("### 📍 Project Details")
        
        with gr.Row(equal_height=True):
            with gr.Column(scale=2):
                building_type = gr.Dropdown(
                    label="Building Type",
                    choices=[
                        "Residential - Single Family Home",
                        "Residential - Multi-Family Housing",
                        "Residential - High-Rise Apartment",
                        "Commercial - Office Building",
                        "Commercial - Retail/Shopping Center",
                        "Industrial - Warehouse/Factory",
                        "Institutional - School",
                        "Institutional - Hospital/Healthcare",
                        "Infrastructure - Bridge/Road",
                        "Mixed-Use Development"
                    ],
                    value="Residential - Single Family Home",
                    info="Select the type of building you plan to construct"
                )
            
            with gr.Column(scale=1):
                latitude = gr.Number(
                    label="Latitude",
                    minimum=4.0,
                    maximum=21.0,
                    value=14.5995,
                    info="4°N to 21°N"
                )
            
            with gr.Column(scale=1):
                longitude = gr.Number(
                    label="Longitude",
                    minimum=116.0,
                    maximum=127.0,
                    value=120.9842,
                    info="116°E to 127°E"
                )
            
            with gr.Column(scale=1):
                building_area = gr.Number(
                    label="Building Area (sq m)",
                    minimum=1,
                    value=100,
                    info="Optional for cost calculations"
                )
        
        with gr.Row():
            with gr.Column(scale=1):
                submit_btn = gr.Button(
                    "🚀 Generate Construction Plan",
                    variant="primary",
                    size="lg"
                )
            with gr.Column(scale=4):
                pass  # Empty space for alignment
        
        gr.Markdown(
            """
            **Note:** Coordinates must be within the Philippines.
            Example locations: Manila (14.5995°N, 120.9842°E) • Cebu (10.3157°N, 123.8854°E) • Davao (7.1907°N, 125.4553°E)
            """
        )
        
        # Results section below
        gr.Markdown("### 📋 Construction Plan Results")
        
        with gr.Tabs() as tabs:
            with gr.Tab("📊 Summary"):
                status_output = gr.HTML(
                    label="Executive Summary",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Click 'Generate Construction Plan' to begin</p>"
                )
            
            with gr.Tab("🛡️ Risk Assessment"):
                risk_output = gr.HTML(
                    label="Risk Assessment",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Risk assessment will appear here</p>"
                )
            
            with gr.Tab("🎨 Visualization"):
                with gr.Column():
                    visualization_image_output = gr.Image(
                        label="Architectural Sketch",
                        type="filepath",
                        show_label=True,
                        height=512
                    )
                    visualization_download_output = gr.File(
                        label="Download Visualization",
                        visible=False
                    )
                    visualization_output = gr.HTML(
                        label="Visualization Details",
                        value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Architectural visualization will appear here</p>"
                    )
            
            with gr.Tab("🏗️ House Specifications"):
                house_specs_output = gr.HTML(
                    label="House Specifications",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>House specifications will appear here</p>"
                )
            
            with gr.Tab("📋 Recommendations"):
                recommendations_output = gr.HTML(
                    label="Construction Recommendations",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Construction recommendations will appear here</p>"
                )
            
            with gr.Tab("💰 Costs"):
                costs_output = gr.HTML(
                    label="Material Costs",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Material cost estimates will appear here</p>"
                )
            
            with gr.Tab("📍 Facilities"):
                facilities_output = gr.HTML(
                    label="Critical Facilities",
                    value="<p style='text-align: center; color: #6b7280; padding: 40px;'>Critical facilities information will appear here</p>"
                )
        
        # Connect button to handler
        submit_btn.click(
            fn=process_construction_plan,
            inputs=[building_type, latitude, longitude, building_area],
            outputs=[
                status_output,
                risk_output,
                house_specs_output,
                recommendations_output,
                costs_output,
                facilities_output,
                visualization_output,
                visualization_image_output,
                visualization_download_output
            ]
        ).then(
            # Show download button if visualization is available
            lambda download_path: gr.update(visible=download_path is not None, value=download_path),
            inputs=[visualization_download_output],
            outputs=[visualization_download_output]
        )
        
        gr.Markdown(
            """
            ---
            ### About This Tool
            
            The Disaster Risk Construction Planner uses AI agents to:
            - Assess disaster risks using Philippines Disaster Risk data
            - Research construction best practices and guidelines
            - Estimate material costs for disaster-resistant construction
            - Locate critical facilities near your building site
            
            **Disclaimer:** This tool provides guidance only. Always consult with licensed 
            engineers, architects, and local authorities for actual construction projects.
            """
        )
    
    return app


if __name__ == "__main__":
    import os
    
    # Get port from environment variable or use default
    port = int(os.getenv("GRADIO_SERVER_PORT", "7860"))
    
    app = create_interface()
    
    try:
        app.launch(
            server_name="0.0.0.0",
            server_port=port,
            share=False,
            theme=gr.themes.Soft()
        )
    except OSError as e:
        if "Cannot find empty port" in str(e):
            print(f"\n❌ Port {port} is already in use!")
            print(f"\nTo use a different port, either:")
            print(f"  1. Set environment variable: export GRADIO_SERVER_PORT=7861")
            print(f"  2. Kill the existing process: kill $(lsof -t -i:{port})")
            print(f"  3. Run with a different port: GRADIO_SERVER_PORT=7861 python app.py")
        raise