import gradio as gr
import subprocess
import random
import json
import os
import tempfile
import time
from pathlib import Path
from datetime import datetime
import asyncio
import aiohttp
from typing import List, Dict, Any
import logging
import black
from pylint import lint
from io import StringIO

# Configure logging
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

class EnhancedAppBuilder:
    def __init__(self):
        self.TEMPLATES = {
            "Basic": "basic_app.json",
            "Dashboard": "dashboard_template.json",
            "Data Analysis": "data_analysis_template.json",
            "ML Interface": "ml_interface_template.json"
        }
        
        self.THEMES = {
            "Default": {},
            "Dark": {"primary_hue": "slate", "secondary_hue": "slate"},
            "Light": {"primary_hue": "blue", "secondary_hue": "blue"},
            "Professional": {"primary_hue": "indigo", "secondary_hue": "indigo"}
        }
        
        self.ADVANCED_COMPONENTS = {
            "Plot": {
                "properties": {
                    "type": ["line", "bar", "scatter", "histogram"],
                    "data_source": "",
                    "x_axis": "",
                    "y_axis": ""
                },
                "code_snippet": 'gr.Plot(value=plot_{id}, label="{label}")'
            },
            "FileUploader": {
                "properties": {
                    "file_types": [".csv", ".txt", ".pdf", ".png", ".jpg"],
                    "multiple": False
                },
                "code_snippet": 'gr.File(file_types={file_types}, label="{label}")'
            },
            "DataTable": {
                "properties": {
                    "headers": [],
                    "row_count": 10,
                    "interactive": True
                },
                "code_snippet": 'gr.Dataframe(headers={headers}, interactive={interactive})'
            },
            "3D Plot": {
                "properties": {
                    "type": ["surface", "scatter3d", "line3d"],
                    "data": None
                },
                "code_snippet": 'gr.Plot3D(value=plot3d_{id})'
            }
        }

    async def validate_component(self, component: Dict) -> tuple:
        """Validate component configuration"""
        try:
            required_fields = ["type", "properties", "id"]
            if not all(field in component for field in required_fields):
                return False, "Missing required fields"
            
            # Validate component type
            if component["type"] not in {**components_registry, **self.ADVANCED_COMPONENTS}:
                return False, f"Invalid component type: {component['type']}"
            
            return True, "Component validation successful"
        except Exception as e:
            return False, f"Validation error: {str(e)}"

    def format_code(self, code: str) -> str:
        """Format Python code using black"""
        try:
            return black.format_str(code, mode=black.FileMode())
        except Exception as e:
            logger.error(f"Code formatting error: {str(e)}")
            return code

    def lint_code(self, code: str) -> List[str]:
        """Run pylint on generated code"""
        with tempfile.NamedTemporaryFile(mode='w', suffix='.py') as tmp:
            tmp.write(code)
            tmp.flush()
            
            output = StringIO()
            lint.Run([tmp.name], do_exit=False, reporter=lint.reporters.TextReporter(output))
            return output.getvalue().split('\n')

    async def optimize_layout(self, components: List[Dict]) -> List[Dict]:
        """Optimize component layout for better UX"""
        # Group related components
        groups = {}
        for comp in components:
            category = comp['type'].split('_')[0]
            if category not in groups:
                groups[category] = []
            groups[category].append(comp)
        
        # Arrange components in optimal order
        optimized = []
        for category in ['input', 'process', 'output']:
            if category in groups:
                optimized.extend(groups[category])
        
        return optimized

class EnhancedAppCreationProcess(AppCreationProcess):
    def __init__(self):
        super().__init__()
        self.builder = EnhancedAppBuilder()
        self.history = []
        self.current_theme = "Default"
        self.custom_css = ""
        self.event_handlers = {}
        self.dependencies = []
        
    def save_snapshot(self):
        """Save current state snapshot"""
        snapshot = {
            'timestamp': datetime.now().isoformat(),
            'app_name': self.app_name,
            'components': self.components.copy(),
            'theme': self.current_theme,
            'custom_css': self.custom_css
        }
        self.history.append(snapshot)

    def restore_snapshot(self, index: int):
        """Restore from saved snapshot"""
        if 0 <= index < len(self.history):
            snapshot = self.history[index]
            self.app_name = snapshot['app_name']
            self.components = snapshot['components']
            self.current_theme = snapshot['theme']
            self.custom_css = snapshot['custom_css']
            return "Snapshot restored successfully"
        return "Invalid snapshot index"

    async def generate_enhanced_code(self):
        """Generate enhanced application code"""
        try:
            # Start with imports
            code = """import gradio as gr
import pandas as pd
import numpy as np
import plotly.express as px
from pathlib import Path
import logging
import json

# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
"""
            
            # Add theme configuration
            theme_config = self.builder.THEMES.get(self.current_theme, {})
            code += f"\ntheme = gr.themes.Default({', '.join(f'{k}={v!r}' for k, v in theme_config.items())})\n"
            
            # Add custom CSS
            if self.custom_css:
                code += f"\ncustom_css = '''{self.custom_css}'''\n"
            
            # Start app definition
            code += f"\nwith gr.Blocks(theme=theme{',' if self.custom_css else ''} css=custom_css) as {self.app_name}:\n"
            
            # Add components with layout optimization
            optimized_components = await self.builder.optimize_layout(self.components)
            
            # Generate component code
            for component in optimized_components:
                code += f"    {Component(**component).render()}\n"
            
            # Add event handlers
            for handler in self.event_handlers:
                code += f"\n    {handler['trigger']}.change(fn={handler['function']}, "
                code += f"inputs={handler['inputs']}, outputs={handler['outputs']})\n"
            
            # Add launch configuration
            code += f"\n{self.app_name}.launch(share=True, debug=True)\n"
            
            # Format the code
            formatted_code = self.builder.format_code(code)
            
            # Run linting
            lint_results = self.builder.lint_code(formatted_code)
            
            return formatted_code, lint_results
            
        except Exception as e:
            logger.error(f"Code generation error: {str(e)}")
            return str(e), []

    async def deploy_enhanced(self):
        """Enhanced deployment process"""
        try:
            # Generate code
            code, lint_results = await self.generate_enhanced_code()
            
            # Create deployment directory
            deploy_dir = Path(f"deployment_{self.app_name}")
            deploy_dir.mkdir(exist_ok=True)
            
            # Save main application file
            with open(deploy_dir / "app.py", "w") as f:
                f.write(code)
            
            # Generate requirements.txt
            requirements = [
                "gradio>=3.50.2",
                "pandas",
                "numpy",
                "plotly",
                "pillow",
                "scikit-learn"
            ]
            with open(deploy_dir / "requirements.txt", "w") as f:
                f.write("\n".join(requirements))
            
            # Generate README.md
            readme = f"""# {self.app_name}

Generated by Enhanced App Builder

## Features
- Interactive web interface
- Data visualization capabilities
- Responsive design with {self.current_theme} theme
- Advanced component integration

## Setup
1. Install requirements: `pip install -r requirements.txt`
2. Run the app: `python app.py`
"""
            with open(deploy_dir / "README.md", "w") as f:
                f.write(readme)
            
            return {
                "status": "success",
                "message": f"Deployment files generated in {deploy_dir}",
                "lint_results": lint_results
            }
            
        except Exception as e:
            logger.error(f"Deployment error: {str(e)}")
            return {
                "status": "error",
                "message": str(e)
            }

# Create enhanced interface
def create_enhanced_interface():
    app_process = EnhancedAppCreationProcess()
    
    with gr.Blocks(theme=gr.themes.Default()) as iface:
        gr.Markdown("# 🚀 Enhanced App Builder Pro")
        
        with gr.Row():
            with gr.Column(scale=2):
                current_step = gr.Markdown(value=app_process.get_current_step_info())
            with gr.Column(scale=1):
                theme_dropdown = gr.Dropdown(
                    choices=list(app_process.builder.THEMES.keys()),
                    value="Default",
                    label="Theme"
                )
        
        with gr.Tabs():
            # App Configuration Tab
            with gr.TabItem("📱 App Configuration"):
                with gr.Group():
                    app_name_input = gr.Textbox(label="App Name")
                    template_dropdown = gr.Dropdown(
                        choices=list(app_process.builder.TEMPLATES.keys()),
                        label="Template"
                    )
                    init_app_button = gr.Button("Initialize App", variant="primary")
                    init_status = gr.Markdown()

            # Component Builder Tab
            with gr.TabItem("🔧 Component Builder"):
                with gr.Row():
                    with gr.Column():
                        component_type = gr.Dropdown(
                            choices=list({**components_registry, **app_process.builder.ADVANCED_COMPONENTS}.keys()),
                            label="Component Type"
                        )
                        add_component_button = gr.Button("Add Component")
                    with gr.Column():
                        components_display = gr.HTML()

            # Style Editor Tab
            with gr.TabItem("🎨 Style Editor"):
                custom_css = gr.Code(
                    label="Custom CSS",
                    language="css"
                )
                apply_style_button = gr.Button("Apply Style")
                style_status = gr.Markdown()

            # Code Generator Tab
            with gr.TabItem("💻 Code Generator"):
                generate_code_button = gr.Button("Generate Code")
                generated_code = gr.Code(language="python")
                lint_results = gr.Markdown()

            # Deployment Tab
            with gr.TabItem("🚀 Deployment"):
                with gr.Group():
                    deploy_button = gr.Button("Deploy Application")
                    deployment_status = gr.Markdown()
                    with gr.Accordion("Deployment Logs", open=False):
                        deployment_logs = gr.TextArea(label="Logs", interactive=False)

        # Footer
        gr.Markdown("---")
        with gr.Row():
            gr.Markdown("### 📊 Build Status")
            components_count = gr.Number(label="Components", value=0)
            validation_status = gr.Markdown()

        # Event handlers
        async def update_theme(theme_name):
            app_process.current_theme = theme_name
            return f"Theme updated to {theme_name}"

        async def init_app(name, template):
            try:
                app_process.app_name = name
                # Load template if selected
                if template:
                    # Implementation for template loading
                    pass
                app_process.save_snapshot()
                return f"✅ App '{name}' initialized successfully with {template} template!"
            except Exception as e:
                return f"❌ Error: {str(e)}"

        async def add_component(comp_type):
            try:
                result = app_process.add_component(comp_type)
                count = len(app_process.components)
                return result, count, "✅ Component added successfully"
            except Exception as e:
                return None, 0, f"❌ Error: {str(e)}"

        async def generate_code():
            try:
                code, lint_results = await app_process.generate_enhanced_code()
                return (
                    code,
                    "### Lint Results:\n" + "\n".join(lint_results)
                )
            except Exception as e:
                return str(e), "❌ Error in code generation"

        async def deploy():
            try:
                result = await app_process.deploy_enhanced()
                return (
                    f"### Deployment Status: {result['status']}\n\n{result['message']}",
                    "\n".join(result.get('lint_results', []))
                )
            except Exception as e:
                return f"❌ Deployment Error: {str(e)}", ""

        # Connect event handlers
        theme_dropdown.change(update_theme, inputs=[theme_dropdown], outputs=[style_status])
        init_app_button.click(init_app, inputs=[app_name_input, template_dropdown], outputs=[init_status])
        add_component_button.click(add_component, inputs=[component_type], outputs=[components_display, components_count, validation_status])
        generate_code_button.click(generate_code, outputs=[generated_code, lint_results])
        deploy_button.click(deploy, outputs=[deployment_status, deployment_logs])

    return iface

# Launch the enhanced interface
if __name__ == "__main__":
    iface = create_enhanced_interface()
    iface.launch(
        server_port=7860,
        share=True,
        debug=True
    )