"""
Pydantic response models for the REST API.
"""

from __future__ import annotations

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


class StatsResponse(BaseModel):
    fps: float = Field(0.0, description="Current pipeline FPS")
    avg_detection_ms: float = Field(0.0, description="Average detection latency (ms)")
    avg_total_ms: float = Field(0.0, description="Average total frame latency (ms)")
    frame_count: int = Field(0, description="Total processed frames")
    uptime_seconds: float = Field(0.0, description="Pipeline uptime (seconds)")
    class_counts: dict[str, int] = Field(default_factory=dict)
    caption: dict[str, Any] = Field(default_factory=dict)
    buffer: dict[str, Any] = Field(default_factory=dict)


class TrackInfo(BaseModel):
    track_id: int
    class_id: int
    label: str
    confidence: float
    bbox: list[int]  # [x1, y1, x2, y2]
    caption: str = ""
    state: str = "Confirmed"


class DetectionResult(BaseModel):
    """Result from image upload / still capture."""
    detections: list[dict[str, Any]] = Field(default_factory=list)
    count: int = 0
    processing_ms: float = 0.0


class SourceConfig(BaseModel):
    type: str = "camera"           # camera | rtsp | file
    camera_index: int = 0
    rtsp_url: str = ""


class HealthResponse(BaseModel):
    status: str = "ok"
    version: str = "1.0.0"
    pipeline_running: bool = False
    opencv_version: str = ""


class ErrorResponse(BaseModel):
    error: str
    detail: Optional[str] = None