"""
Constructive Scenario Formatter
Formats scenarios in an educational, constructive way
"""
from typing import List
from ..database.scenario_models import ADASScenario, RankedScenario


class FormattedScenario:
    """Formatted scenario"""
    def __init__(
        self,
        title: str,
        adas_feature: str,
        boundary_conditions: List[str],
        appropriate_responses: List[str],
        educational_principle: str,
        relevance_hint: str = "",
        full_scenario_link: str = ""
    ):
        self.title = title
        self.adas_feature = adas_feature
        self.boundary_conditions = boundary_conditions
        self.appropriate_responses = appropriate_responses
        self.educational_principle = educational_principle
        self.relevance_hint = relevance_hint
        self.full_scenario_link = full_scenario_link


class ConstructiveFormatter:
    """Constructive scenario formatter"""
    
    def format_scenario(self, ranked_scenario: RankedScenario) -> FormattedScenario:
        """
        Format a single scenario
        
        Principles:
        - Avoid detailed incident descriptions
        - Emphasize boundary conditions and appropriate responses
        - Provide educational principles
        - Use positive, constructive language
        """
        scenario = ranked_scenario.scenario
        
        # Format boundary conditions
        boundary_conditions = self._format_boundary_conditions(scenario)
        
        # Format appropriate responses
        appropriate_responses = self._format_responses(scenario)
        
        # Extract educational principle
        educational_principle = self._format_principle(scenario)
        
        # Generate relevance hint
        relevance_hint = self._generate_relevance_hint(ranked_scenario)
        
        return FormattedScenario(
            title=scenario.title,
            adas_feature=scenario.adas_feature,
            boundary_conditions=boundary_conditions,
            appropriate_responses=appropriate_responses,
            educational_principle=educational_principle,
            relevance_hint=relevance_hint,
            full_scenario_link=f"/scenario/{scenario.scenario_id}"
        )
    
    def _format_boundary_conditions(self, scenario: ADASScenario) -> List[str]:
        """Format boundary conditions using constructive language"""
        formatted = []
        for bc in scenario.boundary_conditions:
            # Use constructive language: emphasize "may" rather than "failed"
            condition_text = f"• {bc.condition}: {bc.impact}"
            if bc.details:
                condition_text += f" ({bc.details})"
            formatted.append(condition_text)
        return formatted
    
    def _format_responses(self, scenario: ADASScenario) -> List[str]:
        """Format appropriate responses, emphasizing correct actions"""
        formatted = []
        for ar in scenario.appropriate_responses:
            response_text = f"• {ar.response}: {ar.rationale}"
            if ar.details:
                response_text += f" ({ar.details})"
            formatted.append(response_text)
        return formatted
    
    def _format_principle(self, scenario: ADASScenario) -> str:
        """Format educational principle"""
        if scenario.educational_principles:
            # Use first principle, or combine multiple principles
            if len(scenario.educational_principles) == 1:
                return scenario.educational_principles[0]
            else:
                return " ".join(scenario.educational_principles[:2])  # Max two principles
        elif scenario.generalization:
            return scenario.generalization
        else:
            return "Understanding system limitations helps ensure safe operation."
    
    def _generate_relevance_hint(self, ranked_scenario: RankedScenario) -> str:
        """Generate relevance hint"""
        if ranked_scenario.match_reasons:
            reasons = ", ".join(ranked_scenario.match_reasons[:2])  # Max two reasons
            return f"Relevant because: {reasons}"
        return ""
    
    def format_scenarios_for_ui(self, ranked_scenarios: List[RankedScenario]) -> str:
        """
        Format multiple scenarios as HTML for UI display
        
        Returns:
            str: HTML formatted scenario cards
        """
        if not ranked_scenarios:
            return ""
        
        formatted_scenarios = [self.format_scenario(rs) for rs in ranked_scenarios]
        
        html_parts = []
        for i, fs in enumerate(formatted_scenarios, 1):
            scenario_html = f"""
            <div style="margin-bottom: 20px; padding: 15px; border: 1px solid #ddd; border-radius: 8px; background-color: #f9f9f9;">
                <h4 style="margin-top: 0; color: #333;">{fs.title}</h4>
                <p style="margin: 5px 0; color: #666; font-size: 0.9em;">Related to: <strong>{fs.adas_feature}</strong></p>
                
                <div style="margin: 15px 0;">
                    <strong style="color: #d9534f;">⚠️ Boundary Conditions:</strong>
                    <ul style="margin: 5px 0; padding-left: 20px;">
                        {''.join(f'<li style="margin: 5px 0;">{bc}</li>' for bc in fs.boundary_conditions)}
                    </ul>
                </div>
                
                <div style="margin: 15px 0;">
                    <strong style="color: #5cb85c;">✅ Appropriate Responses:</strong>
                    <ul style="margin: 5px 0; padding-left: 20px;">
                        {''.join(f'<li style="margin: 5px 0;">{ar}</li>' for ar in fs.appropriate_responses)}
                    </ul>
                </div>
                
                <div style="margin: 15px 0;">
                    <strong style="color: #337ab7;">📖 Educational Principle:</strong>
                    <p style="margin: 5px 0; font-style: italic;">{fs.educational_principle}</p>
                </div>
                
                {f'<p style="margin: 5px 0; font-size: 0.85em; color: #999;">{fs.relevance_hint}</p>' if fs.relevance_hint else ''}
            </div>
            """
            html_parts.append(scenario_html)
        
        return "".join(html_parts)