"""
Filter Pipeline Models
Data models for filter results and processing status.
"""

from dataclasses import dataclass, field
from typing import Dict, List, Optional, Any
from datetime import datetime
from enum import Enum


class ProcessingStatus(Enum):
    """Status of content processing"""
    PENDING = 'pending'
    PROCESSING = 'processing'
    COMPLETED = 'completed'
    FAILED = 'failed'
    CACHED = 'cached'


@dataclass
class FilterResult:
    """
    Result of filtering pipeline for a single post.

    Attributes:
        post_uuid: Unique identifier for the post
        passed: Whether post passed the filter
        score: Relevance/quality score (0.0-1.0)
        categories: Detected categories/topics
        tags: Additional tags applied
        moderation_data: Safety and quality analysis results
        filterset_name: Name of filterset applied
        cache_key: Content hash for caching
        processed_at: Timestamp of processing
        status: Processing status
        error: Error message if failed
    """
    post_uuid: str
    passed: bool
    score: float
    categories: List[str] = field(default_factory=list)
    tags: List[str] = field(default_factory=list)
    moderation_data: Dict[str, Any] = field(default_factory=dict)
    filterset_name: str = 'no_filter'
    cache_key: Optional[str] = None
    processed_at: Optional[datetime] = None
    status: ProcessingStatus = ProcessingStatus.PENDING
    error: Optional[str] = None

    # Detailed scoring breakdown
    score_breakdown: Dict[str, float] = field(default_factory=dict)

    def to_dict(self) -> Dict:
        """Convert to dictionary for JSON serialization"""
        return {
            'post_uuid': self.post_uuid,
            'passed': self.passed,
            'score': self.score,
            'categories': self.categories,
            'tags': self.tags,
            'moderation_data': self.moderation_data,
            'filterset_name': self.filterset_name,
            'cache_key': self.cache_key,
            'processed_at': self.processed_at.isoformat() if self.processed_at else None,
            'status': self.status.value if isinstance(self.status, ProcessingStatus) else self.status,
            'error': self.error,
            'score_breakdown': self.score_breakdown
        }

    @classmethod
    def from_dict(cls, data: Dict) -> 'FilterResult':
        """Create from dictionary"""
        # Handle datetime deserialization
        if data.get('processed_at') and isinstance(data['processed_at'], str):
            data['processed_at'] = datetime.fromisoformat(data['processed_at'])

        # Handle enum deserialization
        if data.get('status') and isinstance(data['status'], str):
            data['status'] = ProcessingStatus(data['status'])

        return cls(**{k: v for k, v in data.items() if k in cls.__dataclass_fields__})


@dataclass
class AIAnalysisResult:
    """
    Result of AI analysis (categorization, moderation, etc).
    Cached separately from FilterResult for reuse across filtersets.
    """
    content_hash: str
    categories: List[str] = field(default_factory=list)
    category_scores: Dict[str, float] = field(default_factory=dict)
    moderation: Dict[str, Any] = field(default_factory=dict)
    quality_score: float = 0.5
    sentiment: Optional[str] = None
    sentiment_score: float = 0.0
    analyzed_at: Optional[datetime] = None
    model_used: Optional[str] = None

    def to_dict(self) -> Dict:
        """Convert to dictionary for JSON serialization"""
        return {
            'content_hash': self.content_hash,
            'categories': self.categories,
            'category_scores': self.category_scores,
            'moderation': self.moderation,
            'quality_score': self.quality_score,
            'sentiment': self.sentiment,
            'sentiment_score': self.sentiment_score,
            'analyzed_at': self.analyzed_at.isoformat() if self.analyzed_at else None,
            'model_used': self.model_used
        }

    @classmethod
    def from_dict(cls, data: Dict) -> 'AIAnalysisResult':
        """Create from dictionary"""
        if data.get('analyzed_at') and isinstance(data['analyzed_at'], str):
            data['analyzed_at'] = datetime.fromisoformat(data['analyzed_at'])

        return cls(**{k: v for k, v in data.items() if k in cls.__dataclass_fields__})