from pydantic.main import BaseModel
from enum import Enum
from pydantic import BaseModel
from typing import List, Optional
from datetime import datetime

#=========================================
class Header(BaseModel):
    camera_id: str
    ward_id: str | None
    timestamp: str
    frame_id: int
#=========================================


#=========================================
class SyestemHealth(str,Enum):
    ok = "OK"
    overload = "OVERLOAD"
    critical = "CRITICAL"


class Summary(BaseModel):
    active_alerts_count: int
    total_objects_count: int
    system_health: SyestemHealth
#=========================================


#=========================================
class Status(str,Enum):
    stable = "STABLE"
    fall_detected = "FALL_DETECTED"
    

class StatusDetail(str,Enum):
    sudden_fall = "SUDDEN_FALL"
    slip_down = "SLIP_DOWN"
    

class Severity(str,Enum):
    low = "LOW"
    medium = "MEDIUM"
    critical = "CRITICAL"
    
    
class Metrics(BaseModel):
    velocity: float
    angle: float


class ObjectVisualData(BaseModel):
    format: str
    has_image: bool
    base64_str: str
    

class DetectedObject(BaseModel):
    tracking_id: int|None
    status: Status
    status_detail: StatusDetail|None
    severity: Severity|None
    location_zone: str
    duration: float
    bbox: List[int]  # [x1, y1, x2, y2]
    skeleton: Optional[List[List[float]]]
    metrics: Metrics
    visual_data: ObjectVisualData
#=========================================


#=========================================
class VisualData(BaseModel):
    format: str
    has_image: bool
    base64_str: str
#=========================================


#=========================================
class FallDetectionSchema(BaseModel):
    header: Header
    summary: Summary
    objects: List[DetectedObject]   
    visual_data: VisualData
#=========================================