119 lines
4.0 KiB
Python
119 lines
4.0 KiB
Python
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from datetime import datetime, timedelta
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from django.shortcuts import render
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from django.db.models import Count
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from django.db.models.functions import TruncDate
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from app.views.ViewsBase import *
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from app.models import AlarmModel, StreamModel
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def index(request):
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"""报警管理页面：集中展示与处理进入区域/滞留/运动等报警事件及快照"""
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return render(request, 'app/alarm/index.html', {})
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def dashboard(request):
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"""报警统计看板页面"""
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return render(request, 'app/alarm/dashboard.html', {})
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# 报警事件类型中文名（与 services/alarm_service.ALARM_EVENT_TYPES 对齐）
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_ALARM_TYPE_NAMES = {
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'entered_zone': '区域入侵',
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'loiter': '滞留',
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'dwell': '滞留报警',
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'line_cross': '越线检测',
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'line_count': '越线计数',
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'direction': '方向入侵',
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'density': '密度报警',
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'alarm': '报警',
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}
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def _stream_display_name(s):
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return (getattr(s, 'nickname', '') or getattr(s, 'name', '') or ('#%s' % s.id))
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def _build_alarm_stats(request):
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"""聚合报警统计数据。days 仅支持 7 / 30。"""
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try:
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days = int(request.GET.get('days', 7))
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except Exception:
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days = 7
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days = 30 if days >= 30 else 7
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now = datetime.now()
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today_start = now.replace(hour=0, minute=0, second=0, microsecond=0)
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week_start = today_start - timedelta(days=6) # 近7天（含今天）
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total = AlarmModel.objects.count()
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today = AlarmModel.objects.filter(timestamp__gte=today_start).count()
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week = AlarmModel.objects.filter(timestamp__gte=week_start).count()
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stream_count = (AlarmModel.objects.exclude(stream_id__isnull=True)
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.values('stream_id').distinct().count())
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# 近 days 天每日趋势（无报警的日期补 0）
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trend_start = today_start - timedelta(days=days - 1)
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tq = (AlarmModel.objects.filter(timestamp__gte=trend_start)
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.annotate(d=TruncDate('timestamp'))
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.values('d').annotate(c=Count('id')))
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tmap = {}
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for row in tq:
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d = row['d']
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key = d.strftime('%Y-%m-%d') if hasattr(d, 'strftime') else str(d)[:10]
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tmap[key] = row['c']
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trend = []
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for i in range(days):
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d = trend_start + timedelta(days=i)
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key = d.strftime('%Y-%m-%d')
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trend.append({"date": d.strftime('%m-%d'), "full": key, "count": tmap.get(key, 0)})
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# 报警类型分布
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ty = AlarmModel.objects.values('event_type').annotate(c=Count('id')).order_by('-c')
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by_type = []
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for r in ty:
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et = r['event_type'] or 'unknown'
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by_type.append({"type": et, "name": _ALARM_TYPE_NAMES.get(et, et), "count": r['c']})
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# TOP 报警摄像头
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top = (AlarmModel.objects.exclude(stream_id__isnull=True)
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.values('stream_id').annotate(c=Count('id')).order_by('-c')[:8])
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sids = [r['stream_id'] for r in top]
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smap = {s.id: _stream_display_name(s) for s in StreamModel.objects.filter(id__in=sids)}
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top_streams = [{"stream_id": r['stream_id'],
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"name": smap.get(r['stream_id'], '#%s' % r['stream_id']),
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"count": r['c']} for r in top]
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return {
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"today": today,
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"week": week,
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"total": total,
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"stream_count": stream_count,
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"days": days,
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"trend": trend,
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"by_type": by_type,
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"top_streams": top_streams,
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}
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def api_openStats(request):
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"""报警统计聚合接口"""
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ret = False
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msg = LANG_VIEWS_T(request, "msg_unknown_error")
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data = {}
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if request.method == 'GET':
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__check_ret, __check_msg = f_checkRequestSafe(request)
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if __check_ret:
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try:
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data = _build_alarm_stats(request)
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ret = True
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msg = LANG_VIEWS_T(request, "msg_success")
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except Exception as e:
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msg = str(e)
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else:
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msg = __check_msg
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else:
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msg = LANG_VIEWS_T(request, "msg_method_not_supported")
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return f_responseJson({"code": 1000 if ret else 0, "msg": msg, "data": data})
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