"""财务看板：只读 daily_income_stat / daily_payout_stat 表字段，支持按俱乐部 Header 过滤。"""
from datetime import date, timedelta

from django.db.models import Sum

from config.models import DailyIncomeStat, DailyPayoutStat
from jituan.services.club_context import filter_club_char_field


def _income_qs(request):
    if request is None:
        return DailyIncomeStat.objects.all()
    return filter_club_char_field(DailyIncomeStat.objects.all(), request, field='club_id')


def _payout_qs(request):
    if request is None:
        return DailyPayoutStat.objects.all()
    return filter_club_char_field(DailyPayoutStat.objects.all(), request, field='club_id')


def sum_income_stat_for_date(stat_date, request=None):
    """金额 = Sum(total_amount)，笔数 = Sum(total_count)，与库里 SQL 一致。"""
    agg = _income_qs(request).filter(date=stat_date).aggregate(
        total_amount=Sum('total_amount'),
        total_count=Sum('total_count'),
    )
    return float(agg['total_amount'] or 0), int(agg['total_count'] or 0)


def sum_payout_stat_for_date(stat_date, request=None):
    agg = _payout_qs(request).filter(date=stat_date).aggregate(
        total_amount=Sum('total_amount'),
        total_count=Sum('total_count'),
    )
    return float(agg['total_amount'] or 0), int(agg['total_count'] or 0)


def today_income_for_dashboard(stat_date=None, request=None):
    """今日收入：只读 daily_income_stat.total_amount / total_count，不扫订单。"""
    stat_date = stat_date or date.today()
    return sum_income_stat_for_date(stat_date, request)


def cumulative_income_payout(request=None):
    total_income = float(
        _income_qs(request).aggregate(t=Sum('total_amount'))['t'] or 0
    )
    total_payout = float(
        _payout_qs(request).aggregate(t=Sum('total_amount'))['t'] or 0
    )
    return total_income, total_payout, round(total_income - total_payout, 2)


def daily_stats_for_request(request=None, days=30):
    since = date.today() - timedelta(days=days)
    income_by_date = {
        str(row['date']): {
            'income': float(row['total_amount'] or 0),
            'income_count': int(row['total_count'] or 0),
        }
        for row in _income_qs(request).filter(date__gte=since).values('date').annotate(
            total_amount=Sum('total_amount'),
            total_count=Sum('total_count'),
        )
    }
    payout_by_date = {
        str(row['date']): float(row['total_amount'] or 0)
        for row in _payout_qs(request).filter(date__gte=since).values('date').annotate(
            total_amount=Sum('total_amount'),
        )
    }
    daily_stats = []
    all_dates = sorted(
        set(income_by_date.keys()) | set(payout_by_date.keys()),
        reverse=True,
    )[:days]
    for d in all_dates:
        inc = income_by_date.get(d, {'income': 0.0, 'income_count': 0})
        payout_amt = payout_by_date.get(d, 0.00)
        daily_stats.append({
            'date': d,
            'income': inc['income'],
            'income_count': inc['income_count'],
            'payout': payout_amt,
            'profit': round(inc['income'] - payout_amt, 2),
        })
    return daily_stats


def income_count_for_summary_date(stat_date, request=None):
    _, count = sum_income_stat_for_date(stat_date, request)
    return count