"""Pydantic schemas for Audit Log API requests/responses."""

from datetime import datetime
from typing import Optional, List, Any
from pydantic import BaseModel, Field


class AuditLogBase(BaseModel):
    """Base audit log schema."""
    action: str = Field(..., max_length=50)
    resource_type: Optional[str] = Field(None, max_length=50)
    resource_id: Optional[str] = Field(None, max_length=255)
    details: Optional[str] = None
    ip_address: Optional[str] = Field(None, max_length=45)
    user_agent: Optional[str] = Field(None, max_length=500)
    status: str = Field(default="success", max_length=20)


class AuditLogCreate(AuditLogBase):
    """Schema for creating an audit log entry."""
    user_id: Optional[str] = None
    username: Optional[str] = None


class AuditLog(AuditLogBase):
    """Schema for audit log response."""
    id: str
    user_id: Optional[str] = None
    username: Optional[str] = None
    created_at: datetime

    class Config:
        from_attributes = True


class AuditLogList(BaseModel):
    """Schema for paginated audit log list."""
    items: List[AuditLog]
    total: int
    page: int
    page_size: int
    total_pages: int


class AuditLogFilter(BaseModel):
    """Schema for filtering audit logs."""
    user_id: Optional[str] = None
    username: Optional[str] = None
    action: Optional[str] = None
    resource_type: Optional[str] = None
    resource_id: Optional[str] = None
    status: Optional[str] = None
    start_date: Optional[datetime] = None
    end_date: Optional[datetime] = None


class AuditLogStats(BaseModel):
    """Schema for audit log statistics."""
    total_entries: int
    entries_today: int
    entries_this_week: int
    entries_this_month: int
    actions_breakdown: dict[str, int]
    top_users: List[dict[str, Any]]
    recent_failures: int