from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session
from typing import List, Optional, Dict, Any
from core.database import get_db
from models.device import Device
from models.algorithm import Algorithm
from models.event import Event

router = APIRouter()

@router.get("/", summary="获取场景列表")
async def get_scenes(db: Session = Depends(get_db)):
    """获取场景列表"""
    try:
        # TODO: 实现真实的场景管理
        # 当前返回模拟数据
        scenes = [
            {
                "id": "scene-001",
                "name": "港口区场景",
                "description": "港口区监控场景",
                "device_count": 45,
                "algorithm_count": 3,
                "created_at": "2024-01-01T00:00:00Z"
            },
            {
                "id": "scene-002", 
                "name": "码头区场景",
                "description": "码头区监控场景",
                "device_count": 38,
                "algorithm_count": 2,
                "created_at": "2024-01-02T00:00:00Z"
            },
            {
                "id": "scene-003",
                "name": "办公区场景", 
                "description": "办公区监控场景",
                "device_count": 23,
                "algorithm_count": 1,
                "created_at": "2024-01-03T00:00:00Z"
            }
        ]
        
        return {
            "scenes": scenes
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"获取场景列表失败: {str(e)}")

@router.get("/{scene_id}", summary="获取场景详情")
async def get_scene_detail(
    scene_id: str,
    db: Session = Depends(get_db)
):
    """根据ID获取场景详情"""
    try:
        # TODO: 实现真实的场景查询
        # 当前返回模拟数据
        scene_data = {
            "scene-001": {
                "id": "scene-001",
                "name": "港口区场景",
                "description": "港口区监控场景",
                "devices": [
                    {
                        "id": 1,
                        "name": "港口区监控1",
                        "status": "online",
                        "location": "港口A区"
                    },
                    {
                        "id": 2,
                        "name": "港口区监控2", 
                        "status": "online",
                        "location": "港口B区"
                    }
                ],
                "algorithms": [
                    {
                        "id": 1,
                        "name": "船舶靠泊识别",
                        "status": "active"
                    },
                    {
                        "id": 2,
                        "name": "人员登轮识别",
                        "status": "active"
                    }
                ],
                "events": [
                    {
                        "id": 1,
                        "type": "船舶靠泊",
                        "severity": "high",
                        "created_at": "2024-01-15T10:30:00Z"
                    }
                ]
            }
        }
        
        scene = scene_data.get(scene_id)
        if not scene:
            raise HTTPException(status_code=404, detail="场景不存在")
        
        return scene
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"获取场景详情失败: {str(e)}")

@router.post("/", summary="创建场景")
async def create_scene(
    scene_data: Dict[str, Any],
    db: Session = Depends(get_db)
):
    """创建新场景"""
    try:
        # TODO: 实现真实的场景创建
        # 当前返回模拟数据
        new_scene = {
            "id": f"scene-{len(scene_data) + 1:03d}",
            "name": scene_data.get("name", "新场景"),
            "description": scene_data.get("description", ""),
            "device_count": 0,
            "algorithm_count": 0,
            "created_at": "2024-01-15T10:30:00Z"
        }
        
        return new_scene
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"创建场景失败: {str(e)}")

@router.put("/{scene_id}", summary="更新场景")
async def update_scene(
    scene_id: str,
    scene_data: Dict[str, Any],
    db: Session = Depends(get_db)
):
    """更新场景信息"""
    try:
        # TODO: 实现真实的场景更新
        # 当前返回模拟数据
        updated_scene = {
            "id": scene_id,
            "name": scene_data.get("name", "更新后的场景"),
            "description": scene_data.get("description", ""),
            "device_count": 0,
            "algorithm_count": 0,
            "updated_at": "2024-01-15T10:30:00Z"
        }
        
        return updated_scene
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"更新场景失败: {str(e)}")

@router.delete("/{scene_id}", summary="删除场景")
async def delete_scene(
    scene_id: str,
    db: Session = Depends(get_db)
):
    """删除场景"""
    try:
        # TODO: 实现真实的场景删除
        return {
            "id": scene_id,
            "message": "场景已删除"
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"删除场景失败: {str(e)}")

@router.get("/{scene_id}/devices", summary="获取场景设备列表")
async def get_scene_devices(
    scene_id: str,
    db: Session = Depends(get_db)
):
    """获取场景下的设备列表"""
    try:
        # TODO: 实现真实的场景设备查询
        # 当前返回模拟数据
        devices = [
            {
                "id": 1,
                "name": "港口区监控1",
                "status": "online",
                "location": "港口A区",
                "ip_address": "192.168.1.100"
            },
            {
                "id": 2,
                "name": "港口区监控2",
                "status": "online", 
                "location": "港口B区",
                "ip_address": "192.168.1.101"
            }
        ]
        
        return {
            "scene_id": scene_id,
            "devices": devices
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"获取场景设备失败: {str(e)}")

@router.get("/{scene_id}/algorithms", summary="获取场景算法列表")
async def get_scene_algorithms(
    scene_id: str,
    db: Session = Depends(get_db)
):
    """获取场景下的算法列表"""
    try:
        # TODO: 实现真实的场景算法查询
        # 当前返回模拟数据
        algorithms = [
            {
                "id": 1,
                "name": "船舶靠泊识别",
                "status": "active",
                "accuracy": 95.2
            },
            {
                "id": 2,
                "name": "人员登轮识别",
                "status": "active",
                "accuracy": 88.7
            }
        ]
        
        return {
            "scene_id": scene_id,
            "algorithms": algorithms
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"获取场景算法失败: {str(e)}")