"""
Pydantic schemas for API validation
"""
from pydantic import BaseModel, Field
from typing import Optional, List
from datetime import datetime


class HFConfigUpdate(BaseModel):
    """Schema for updating HF configuration"""
    hf_token: Optional[str] = None
    source_all_repo: Optional[str] = None
    source_ato_repo: Optional[str] = None
    target_repo: Optional[str] = None
    upload_batch_size: Optional[int] = None
    max_uploads_per_hour: Optional[int] = None

    class Config:
        from_attributes = True


class HFConfigResponse(BaseModel):
    """Schema for HF configuration response"""
    id: int
    hf_token: Optional[str] = None
    source_all_repo: str
    source_ato_repo: str
    target_repo: str
    upload_batch_size: int
    max_uploads_per_hour: int
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class UploadQueueItem(BaseModel):
    """Schema for upload queue item"""
    id: int
    file_name: str
    file_path: str
    file_size: int
    status: str
    uploaded_at: Optional[datetime] = None
    failure_reason: Optional[str] = None
    retry_count: int
    max_retries: int
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class UploadQueueStats(BaseModel):
    """Schema for upload queue statistics"""
    pending: int
    uploading: int
    completed: int
    failed: int
    total: int


class ProcessingStateResponse(BaseModel):
    """Schema for processing state response"""
    id: int
    status: str
    total_files: int
    processed_files: int
    matched_pairs: int
    error_message: Optional[str] = None
    started_at: Optional[datetime] = None
    completed_at: Optional[datetime] = None
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class ProcessRequest(BaseModel):
    """Schema for process request"""
    max_files: int = Field(default=0, description="0 means process all files")


class UploadRequest(BaseModel):
    """Schema for upload request"""
    file_ids: List[int] = Field(description="List of upload queue item IDs to upload")
    batch_size: int = Field(default=10, description="Number of files per batch")


class FilePreviewRequest(BaseModel):
    """Schema for file preview request"""
    filename: str


class FilePreviewResponse(BaseModel):
    """Schema for file preview response"""
    filename: str
    size: int
    content: dict


class RateLimitStatus(BaseModel):
    """Schema for rate limit status"""
    can_upload: bool
    remaining_uploads: int
    resume_time: Optional[datetime] = None


class UploadStatus(BaseModel):
    """Schema for upload status"""
    rate_limit: RateLimitStatus
    config: Optional[HFConfigResponse] = None


class ErrorLogResponse(BaseModel):
    """Schema for error log response"""
    id: int
    file_name: str
    error_code: Optional[str] = None
    error_message: Optional[str] = None
    status_code: Optional[int] = None
    retryable: bool
    created_at: datetime

    class Config:
        from_attributes = True