"""
Interface functions for the Gradio application
Contains all the functions that connect the UI to the business logic
"""

import gradio as gr
import pandas as pd
import json
from core.config import MAKE_MODEL_DATA


def update_models(make):
    """Update model choices based on selected make"""
    if make in MAKE_MODEL_DATA:
        models = MAKE_MODEL_DATA[make]
        # Add ALL option at the beginning
        models_with_all = ["ALL"] + models
        return gr.Dropdown(choices=models_with_all, value="ALL")
    else:
        return gr.Dropdown(choices=["ALL"], value="ALL")


def predict_dealers_interface(matcher, make, model, year, body_type, fuel_type, transmission, 
                            odometer, doors, seats, engine_size, power, cylinders,
                            safety_rating, drive_type, segment, condition, selected_model):
    """Interface function for detailed Gradio prediction"""
    # Handle placeholder values - convert to None for backend processing
    processed_make = None if (not make or make.strip() == "" or make == "Select Make") else make.strip()
    processed_model = None if (not model or model.strip() == "" or model == "ALL") else model.strip()
    processed_body_type = None if body_type == "Select Body Type" else body_type
    processed_fuel_type = None if fuel_type == "Select Fuel Type" else fuel_type
    processed_transmission = None if transmission == "Select Transmission" else transmission
    processed_drive_type = None if drive_type == "Select Drive Type" else drive_type
    processed_segment = None if segment == "Select Segment" else segment
    processed_condition = None if condition == "Select Condition" else condition
    processed_selected_model = None if selected_model == "Select AI Model" else selected_model
    
    return matcher.predict_dealers(processed_make, processed_model, year, processed_body_type, 
                                 processed_fuel_type, processed_transmission, odometer, doors, 
                                 seats, engine_size, power, cylinders, safety_rating, 
                                 processed_drive_type, processed_segment, processed_condition, 
                                 processed_selected_model)


def simple_predict_dealers_interface(matcher, simple_make, simple_model, simple_year, 
                                   simple_odometer, simple_model_selection):
    """Simple interface function for Gradio with structured JSON output"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not simple_make or simple_make.strip() == "") else simple_make.strip()
    processed_model = None if (not simple_model or simple_model.strip() == "") else simple_model.strip()
    processed_model_selection = None if simple_model_selection == "Select AI Model" else simple_model_selection
    
    # Get structured JSON result
    json_result = matcher.predict_dealers_json(
        make=processed_make, 
        model=processed_model, 
        year=simple_year, 
        body_type=None,
        fuel_type=None,
        transmission=None,
        odometer=simple_odometer, 
        doors=None,
        seats=None,
        engine_size=None,
        power=None,
        cylinders=None,
        safety_rating=None,
        drive_type=None,
        segment=None,
        condition=None,
        selected_model=processed_model_selection
    )
    
    # Handle error cases
    if not json_result["success"]:
        return "❌ Error", "", f"**❌ Error:** {json_result['error']}"
    
    # Extract data for UI display
    data = json_result["data"]
    top_dealer = data["top_dealer"]["name"]
    confidence = data["top_dealer"]["confidence_percentage"]
    
    # Get all dealer names for batch contact lookup
    all_dealer_names = [dealer['dealer_name'] for dealer in data["dealer_rankings"]]
    
    # Batch lookup contact information for all dealers
    all_contacts = matcher.get_dealers_contact_info_batch(all_dealer_names)
    
    # Get contact info for top dealer
    top_dealer_contact = all_contacts.get(top_dealer)
    
    # Format top dealer info with contact details
    if top_dealer_contact and top_dealer_contact.get('phone'):
        top_dealer_display = f"🎯 **Best Match: {top_dealer}**\n📞 **Phone:** {top_dealer_contact['phone']}"
        if top_dealer_contact.get('city') != 'Unknown' and top_dealer_contact.get('state') != 'Unknown':
            top_dealer_display += f"\n📍 **Location:** {top_dealer_contact['city']}, {top_dealer_contact['state']}"
    else:
        top_dealer_display = f"🎯 **Best Match: {top_dealer}**\n📞 **Phone:** Contact dealer directly"
    
    # Create user-friendly display with structured data
    display_text = f"""
## 🎯 **Prediction Results**

### 🏆 **Top Dealer**
**{top_dealer}** - {confidence} confidence

"""
    
    # Add contact information for top dealer
    if top_dealer_contact:
        display_text += f"""**📞 Phone:** {top_dealer_contact.get('phone', 'Contact dealer directly')}
**📍 Location:** {top_dealer_contact.get('city', 'Unknown')}, {top_dealer_contact.get('state', 'Unknown')}

"""
    else:
        display_text += "**📞 Phone:** Contact dealer directly\n\n"

    display_text += """### 📊 **All Dealer Rankings**
"""
    
    # Add dealer rankings with contact info using batch lookup results
    for dealer in data["dealer_rankings"]:
        rank_emoji = "🥇" if dealer["rank"] == 1 else "🥈" if dealer["rank"] == 2 else "🥉" if dealer["rank"] == 3 else "🔸"
        dealer_name = dealer['dealer_name']
        
        # Get contact info from batch lookup
        contact_info = all_contacts.get(dealer_name)
        
        if contact_info and contact_info.get('phone'):
            phone_info = f" • 📞 {contact_info['phone']}"
        else:
            phone_info = " • 📞 Contact dealer"
            
        display_text += f"{rank_emoji} **{dealer['rank']}. {dealer_name}** - {dealer['confidence_percentage']}{phone_info}\n"
    
    display_text += f"""

### 🚗 **Vehicle Input Summary**
"""
    
    vehicle_info = data["vehicle_input"]
    if vehicle_info:
        for key, value in vehicle_info.items():
            if value is not None:
                display_key = key.replace('_', ' ').title()
                display_text += f"• **{display_key}:** {value}\n"
    
    display_text += f"""

### 🤖 **Model Information**
• **AI Model Used:** {data['model_info']['model_used']}
• **Total Dealers Available:** {data['model_info']['total_dealers_available']}
• **Prediction Timestamp:** {data['timestamp']}

### 📋 **Structured JSON Output**
*Perfect for API integration:*

```json
{json.dumps(json_result, indent=2)}
```

**API Usage:** This JSON structure can be directly used in your applications for:
- Top dealer extraction: `data.top_dealer.name`
- Confidence scores: `data.top_dealer.confidence_score`
- Full rankings: `data.dealer_rankings[]`
- Input validation: `data.vehicle_input`
- Error handling: `success` and `error` fields
"""
    
    return top_dealer_display, confidence, display_text


def search_data_interface(matcher, keyword_search, make, model, year_from, year_to, body_type, fuel_type, 
                         odometer_from, odometer_to, max_price, selected_file, max_results, show_dealer_stats):
    """Interface function for traditional data search"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "" or make == "Select Make") else make.strip()
    processed_model = None if (not model or model.strip() == "" or model == "ALL") else model.strip()
    processed_body_type = None if body_type == "Select Body Type" else body_type
    processed_fuel_type = None if fuel_type == "Select Fuel Type" else fuel_type
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    if show_dealer_stats:
        # Use API method that returns clean structured data
        api_result = matcher.search_data_files_api(
            keyword_search=keyword_search, 
            make=processed_make, 
            model=processed_model, 
            year_from=year_from, 
            year_to=year_to,
            body_type=processed_body_type, 
            fuel_type=processed_fuel_type, 
            odometer_from=odometer_from, 
            odometer_to=odometer_to, 
            max_price=max_price, 
            selected_file=processed_selected_file, 
            max_results=max_results
        )
        
        if not api_result["success"]:
            return f"❌ {api_result['message']}", "Error occurred", ""
        
        # Apply HTML formatting for UI display
        try:
            from utils import format_dealer_results_as_html
            dealer_html = format_dealer_results_as_html(api_result['data']['dealers'])
            
            summary = api_result['data']['search_summary']
            message = f"✅ Found {summary['total_matches']:,} matches from {summary['original_count']:,} records in {summary['file_searched']}"
            info_text = "**🏆 Dealer Rankings with Expandable Car Lists**\n\nClick on any dealer name to see their individual car listings with prices and specifications."
            
            return message, info_text, dealer_html
        except ImportError:
            # Fallback if HTML formatting fails
            return api_result['message'], "API data available but HTML formatting failed", str(api_result['data'])
    else:
        # For non-dealer stats, use the original method that returns DataFrame
        message, result_data = matcher.search_data_files(keyword_search=keyword_search, make=processed_make, 
                                                         model=processed_model, year_min=None, year_max=None,
                                                         year_from=year_from, year_to=year_to,
                                                         body_type=processed_body_type, fuel_type=processed_fuel_type, 
                                                         max_odometer=None, odometer_from=odometer_from, 
                                                         odometer_to=odometer_to, max_price=max_price, 
                                                         selected_file=processed_selected_file, 
                                                         max_results=max_results, show_dealer_stats=False)
        
        if isinstance(result_data, pd.DataFrame) and not result_data.empty:
            info_text = f"**📊 Search completed successfully**\n\n"
            html_table = result_data.to_html(classes='table table-striped', 
                                           table_id='search-results', escape=False, index=False)
            return message, info_text, html_table
        else:
            return message, "No results to display", ""


def simple_search_data_interface(matcher, keyword_search, make, model, year_from, year_to, odometer_from, odometer_to, selected_file, 
                                max_results, show_dealer_stats):
    """Interface function for simple traditional data search"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "" or make == "Select Make") else make.strip()
    processed_model = None if (not model or model.strip() == "" or model == "ALL") else model.strip()
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    if show_dealer_stats:
        # Use API method that returns clean structured data
        api_result = matcher.search_data_files_api(
            keyword_search=keyword_search,
            make=processed_make, 
            model=processed_model, 
            year_from=year_from,
            year_to=year_to,
            odometer_from=odometer_from,
            odometer_to=odometer_to,
            selected_file=processed_selected_file, 
            max_results=max_results
        )
        
        if not api_result["success"]:
            return f"❌ {api_result['message']}", "Error occurred", ""
        
        # Apply HTML formatting for UI display
        try:
            from utils import format_dealer_results_as_html
            dealer_html = format_dealer_results_as_html(api_result['data']['dealers'])
            
            summary = api_result['data']['search_summary']
            message = f"✅ Found {summary['total_matches']:,} matches from {summary['original_count']:,} records in {summary['file_searched']}"
            info_text = "**🏆 Dealer Rankings with Expandable Car Lists**\n\nClick on any dealer name to see their individual car listings with prices and specifications."
            
            return message, info_text, dealer_html
        except ImportError:
            # Fallback if HTML formatting fails
            return api_result['message'], "API data available but HTML formatting failed", str(api_result['data'])
    else:
        # For non-dealer stats, use original method that returns DataFrame
        message, result_data = matcher.search_data_files(
            keyword_search=keyword_search,
            make=processed_make, 
            model=processed_model, 
            year_min=None, 
            year_max=None,
            year_from=year_from,
            year_to=year_to,
            body_type=None,  # Not used in simple search
            fuel_type=None,  # Not used in simple search
            max_odometer=None,  # Not using max_odometer anymore
            odometer_from=odometer_from,
            odometer_to=odometer_to,
            max_price=None,  # Not used in simple search
            selected_file=processed_selected_file, 
            max_results=max_results, 
            show_dealer_stats=False
        )
        
        if isinstance(result_data, pd.DataFrame) and not result_data.empty:
            info_text = f"**📊 Search completed successfully**\n\n"
            html_table = result_data.to_html(classes='table table-striped', 
                                           table_id='search-results', escape=False, index=False)
            return message, info_text, html_table
        else:
            return message, "No results to display", ""


def range_search_data_interface(matcher, keyword_search, make, model, year_value, year_range, odometer_value, odometer_range, 
                               selected_file, max_results, show_dealer_stats, return_cars):
    """Interface function for simple range-based data search - NOW RETURNS PURE JSON"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "") else make.strip()
    processed_model = None if (not model or model.strip() == "") else model.strip()
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    # Convert target±range to from/to values for the matcher
    year_from = year_value - year_range if year_value and year_range is not None else None
    year_to = year_value + year_range if year_value and year_range is not None else None
    
    odometer_from = odometer_value - odometer_range if odometer_value and odometer_range is not None else None
    odometer_to = odometer_value + odometer_range if odometer_value and odometer_range is not None else None
    
    # Always use API method that returns clean structured JSON data
    api_result = matcher.search_data_files_api(
        keyword_search=keyword_search,
        make=processed_make, 
        model=processed_model, 
        year_from=year_from,
        year_to=year_to,
        odometer_from=odometer_from,
        odometer_to=odometer_to,
        selected_file=processed_selected_file, 
        max_results=max_results,
        return_cars=return_cars
    )
    
    # Return pure JSON data - no HTML formatting
    import json
    if not api_result["success"]:
        return f"❌ {api_result['message']}", "Error occurred", json.dumps(api_result, indent=2)
    
    # Return structured data as formatted JSON string for display
    summary = api_result['data']['search_summary']
    message = f"✅ Found {summary['total_matches']:,} matches from {summary['original_count']:,} records in {summary['file_searched']}"
    info_text = "**🏆 Pure JSON Response**\n\nStructured dealer data with contact info and car listings."
    
    # Return the full JSON result as a formatted string
    json_output = json.dumps(api_result, indent=2)
    
    return message, info_text, json_output


def range_search_data_interface_api(matcher, keyword_search, make, model, year_value, year_range, odometer_value, odometer_range, 
                                   selected_file, max_results, show_dealer_stats):
    """Pure API interface function that returns clean JSON data without HTML formatting"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "") else make.strip()
    processed_model = None if (not model or model.strip() == "") else model.strip()
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    # Convert target±range to from/to values for the matcher
    year_from = year_value - year_range if year_value and year_range is not None else None
    year_to = year_value + year_range if year_value and year_range is not None else None
    
    odometer_from = odometer_value - odometer_range if odometer_value and odometer_range is not None else None
    odometer_to = odometer_value + odometer_range if odometer_value and odometer_range is not None else None
    
    # Always use API method that returns clean structured data
    api_result = matcher.search_data_files_api(
        keyword_search=keyword_search,
        make=processed_make, 
        model=processed_model, 
        year_from=year_from,
        year_to=year_to,
        odometer_from=odometer_from,
        odometer_to=odometer_to,
        selected_file=processed_selected_file, 
        max_results=max_results
    )
    
    # Return clean JSON data directly - NO HTML formatting
    return api_result


def search_data_interface_api(matcher, keyword_search, make, model, year_from, year_to, body_type, fuel_type, 
                             odometer_from, odometer_to, max_price, selected_file, max_results, show_dealer_stats):
    """Pure API interface function that returns clean JSON data without HTML formatting"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "" or make == "Select Make") else make.strip()
    processed_model = None if (not model or model.strip() == "" or model == "ALL") else model.strip()
    processed_body_type = None if body_type == "Select Body Type" else body_type
    processed_fuel_type = None if fuel_type == "Select Fuel Type" else fuel_type
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    # Always use API method that returns clean structured data
    api_result = matcher.search_data_files_api(
        keyword_search=keyword_search, 
        make=processed_make, 
        model=processed_model, 
        year_from=year_from, 
        year_to=year_to,
        body_type=processed_body_type, 
        fuel_type=processed_fuel_type, 
        odometer_from=odometer_from, 
        odometer_to=odometer_to, 
        max_price=max_price, 
        selected_file=processed_selected_file, 
        max_results=max_results
    )
    
    # Return clean JSON data directly - NO HTML formatting
    return api_result


def simple_search_data_interface_api(matcher, keyword_search, make, model, year_from, year_to, odometer_from, odometer_to, selected_file, 
                                    max_results, show_dealer_stats):
    """Pure API interface function that returns clean JSON data without HTML formatting"""
    # Handle text inputs - convert empty strings to None for backend processing
    processed_make = None if (not make or make.strip() == "" or make == "Select Make") else make.strip()
    processed_model = None if (not model or model.strip() == "" or model == "ALL") else model.strip()
    processed_selected_file = None if selected_file == "Select File" else selected_file
    
    # Always use API method that returns clean structured data
    api_result = matcher.search_data_files_api(
        keyword_search=keyword_search,
        make=processed_make, 
        model=processed_model, 
        year_from=year_from,
        year_to=year_to,
        odometer_from=odometer_from,
        odometer_to=odometer_to,
        selected_file=processed_selected_file, 
        max_results=max_results
    )
    
    # Return clean JSON data directly - NO HTML formatting
    return api_result