"""
Data models for the YouTube Summarizer SDK
"""

from typing import List, Optional, Dict, Any, Union
from datetime import datetime
from enum import Enum
from dataclasses import dataclass, field
from pydantic import BaseModel, HttpUrl, Field, validator

class TranscriptSource(str, Enum):
    """Transcript source options"""
    YOUTUBE = "youtube"
    WHISPER = "whisper" 
    BOTH = "both"

class WhisperModelSize(str, Enum):
    """Whisper model size options"""
    TINY = "tiny"
    BASE = "base"
    SMALL = "small"
    MEDIUM = "medium"
    LARGE = "large"

class ProcessingPriority(str, Enum):
    """Processing priority levels"""
    LOW = "low"
    NORMAL = "normal"
    HIGH = "high"
    URGENT = "urgent"

class JobStatus(str, Enum):
    """Job processing status"""
    QUEUED = "queued"
    PROCESSING = "processing"
    COMPLETED = "completed"
    FAILED = "failed"
    CANCELLED = "cancelled"

class WebhookEvent(str, Enum):
    """Webhook event types"""
    JOB_STARTED = "job.started"
    JOB_PROGRESS = "job.progress"
    JOB_COMPLETED = "job.completed"
    JOB_FAILED = "job.failed"
    BATCH_COMPLETED = "batch.completed"

# Request Models
class TranscriptRequest(BaseModel):
    """Request model for transcript extraction"""
    video_url: HttpUrl = Field(..., description="YouTube video URL")
    transcript_source: TranscriptSource = Field(
        default=TranscriptSource.YOUTUBE,
        description="Transcript source"
    )
    whisper_model_size: Optional[WhisperModelSize] = Field(
        default=WhisperModelSize.SMALL,
        description="Whisper model size for AI transcription"
    )
    priority: ProcessingPriority = Field(
        default=ProcessingPriority.NORMAL,
        description="Processing priority"
    )
    webhook_url: Optional[HttpUrl] = Field(
        None, 
        description="Webhook URL for notifications"
    )
    include_quality_analysis: bool = Field(
        default=True,
        description="Include transcript quality analysis"
    )
    custom_prompt: Optional[str] = Field(
        None,
        description="Custom processing prompt"
    )
    tags: List[str] = Field(
        default_factory=list,
        description="Custom tags for organization"
    )

    @validator('video_url')
    def validate_youtube_url(cls, v):
        """Validate YouTube URL format"""
        url_str = str(v)
        valid_patterns = [
            'youtube.com/watch',
            'youtu.be/',
            'youtube.com/embed',
            'm.youtube.com/watch'
        ]
        
        if not any(pattern in url_str for pattern in valid_patterns):
            raise ValueError('Invalid YouTube URL format')
        
        return v

class BatchProcessingRequest(BaseModel):
    """Request model for batch processing"""
    video_urls: List[HttpUrl] = Field(
        ..., 
        min_items=1, 
        max_items=1000,
        description="List of YouTube video URLs"
    )
    batch_name: str = Field(..., description="Batch job name")
    transcript_source: TranscriptSource = Field(
        default=TranscriptSource.YOUTUBE,
        description="Transcript source for all videos"
    )
    priority: ProcessingPriority = Field(
        default=ProcessingPriority.NORMAL,
        description="Processing priority"
    )
    webhook_url: Optional[HttpUrl] = Field(
        None,
        description="Webhook URL for batch notifications"
    )
    parallel_processing: bool = Field(
        default=False,
        description="Enable parallel processing"
    )
    max_concurrent_jobs: int = Field(
        default=5,
        ge=1,
        le=50,
        description="Maximum concurrent jobs"
    )

# Response Models
class JobResponse(BaseModel):
    """Response model for job creation"""
    job_id: str
    status: JobStatus
    priority: ProcessingPriority
    created_at: datetime
    estimated_completion: Optional[datetime]
    progress_percentage: float
    current_stage: str
    webhook_url: Optional[str]
    metadata: Dict[str, Any]

class BatchJobResponse(BaseModel):
    """Response model for batch job creation"""
    batch_id: str
    status: JobStatus
    video_count: int
    priority: ProcessingPriority
    estimated_completion: Optional[datetime]
    parallel_processing: bool
    webhook_url: Optional[str]
    metadata: Dict[str, Any]

class TranscriptResult(BaseModel):
    """Transcript extraction result"""
    job_id: str
    video_id: str
    video_url: str
    transcript_source: TranscriptSource
    transcript: Optional[str]
    segments: Optional[List[Dict[str, Any]]]
    processing_time_seconds: float
    quality_score: Optional[float]
    confidence_score: Optional[float]
    metadata: Dict[str, Any]

class QualityComparison(BaseModel):
    """Quality comparison between transcript sources"""
    similarity_score: float
    punctuation_improvement_score: float
    capitalization_improvement_score: float
    technical_terms_improved: List[str]
    recommendation: TranscriptSource

class DualTranscriptResult(BaseModel):
    """Result for dual transcript extraction"""
    job_id: str
    video_id: str
    video_url: str
    youtube_transcript: Optional[str]
    whisper_transcript: Optional[str]
    youtube_segments: Optional[List[Dict[str, Any]]]
    whisper_segments: Optional[List[Dict[str, Any]]]
    quality_comparison: Optional[QualityComparison]
    processing_time_seconds: float
    metadata: Dict[str, Any]

class APIUsageStats(BaseModel):
    """API usage statistics"""
    total_requests: int
    requests_today: int
    requests_this_month: int
    average_response_time_ms: float
    success_rate: float
    rate_limit_remaining: int
    quota_reset_time: datetime

class ProcessingTimeEstimate(BaseModel):
    """Processing time estimate"""
    estimated_time_seconds: float
    estimated_cost: Optional[float]
    factors: Optional[Dict[str, float]]

# Webhook Models
class WebhookPayload(BaseModel):
    """Webhook notification payload"""
    event: WebhookEvent
    timestamp: datetime
    data: Dict[str, Any]

@dataclass
class SDKConfig:
    """SDK configuration"""
    api_key: str
    base_url: str = "https://api.youtube-summarizer.com"
    timeout: float = 60.0
    max_retries: int = 3
    retry_delay: float = 1.0
    verify_ssl: bool = True
    user_agent: str = field(default_factory=lambda: f"youtube-summarizer-python-sdk/4.2.0")

@dataclass
class WebSocketConfig:
    """WebSocket configuration for real-time updates"""
    url: str = "wss://api.youtube-summarizer.com/ws"
    auto_reconnect: bool = True
    max_reconnect_attempts: int = 5
    heartbeat_interval: float = 30.0
    reconnect_delay: float = 5.0

# MCP-specific models
class MCPToolRequest(BaseModel):
    """MCP tool request model"""
    name: str
    arguments: Dict[str, Any]

class MCPToolResult(BaseModel):
    """MCP tool result model"""
    content: List[Dict[str, Any]]
    is_error: bool = False

class MCPResourceRequest(BaseModel):
    """MCP resource request model"""
    uri: str

class MCPResourceResult(BaseModel):
    """MCP resource result model"""
    contents: List[Dict[str, Any]]