529 lines
14 KiB
C#
529 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows.Input;
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using System.Windows;
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using AllBase.Model.MvvmBaseClasses;
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using _29WxOrderWpf.Ctrls.Statistics.Models;
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using _29WxOrderWpf.Ctrls.Statistics.Services;
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using _29WxOrderWpf.Commands;
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namespace _29WxOrderWpf.Ctrls.Statistics.ViewModels
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{
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/// <summary>
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/// 天/周/月周期统计 - 页面 ViewModel（MVVM）。
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/// 通过 PeriodStatisticType 指定统计周期（Day/Week/Month），
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/// 页面统一展示：筛选条件 + 周期×店铺统计表格 + 分页。
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/// </summary>
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public class PeriodRevenueStatisticsViewModel : PropertyNotifyObject
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{
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/// <summary>每页行数</summary>
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private const int PageSize = 20;
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private readonly IShopRevenueStatisticsService _service;
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private readonly PeriodStatisticType _periodType;
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private readonly DelegateCommand _firstPageCommand;
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private readonly DelegateCommand _prevPageCommand;
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private readonly DelegateCommand _nextPageCommand;
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private readonly DelegateCommand _lastPageCommand;
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private ShopOption _selectedShop;
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private ShopRevenueSummary _summary;
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private ObservableCollection<ShopPeriodStatisticsItem> _statistics;
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private List<ShopPeriodStatisticsItem> _allItems = new List<ShopPeriodStatisticsItem>();
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private int _pageIndex = 1;
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private int _totalPages = 1;
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private int _totalCount;
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private string _pagerText = string.Empty;
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public PeriodRevenueStatisticsViewModel(PeriodStatisticType periodType)
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: this(periodType, new ShopRevenueStatisticsService())
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{
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}
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public PeriodRevenueStatisticsViewModel(PeriodStatisticType periodType, IShopRevenueStatisticsService service)
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{
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_periodType = periodType;
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_service = service ?? new ShopRevenueStatisticsService();
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PageTitle = GetPageTitle(periodType);
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PeriodColumnHeader = GetPeriodColumnHeader(periodType);
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TimeRangeOptions = new ObservableCollection<TimeRangeOption>(GetTimeRangeOptions(periodType));
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ShopOptions = new ObservableCollection<ShopOption>();
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QueryCommand = new DelegateCommand(async () => await LoadAsync());
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ResetCommand = new DelegateCommand(Reset);
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_firstPageCommand = new DelegateCommand(() => GoToPage(1), () => HasPrevPage);
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_prevPageCommand = new DelegateCommand(() => GoToPage(PageIndex - 1), () => HasPrevPage);
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_nextPageCommand = new DelegateCommand(() => GoToPage(PageIndex + 1), () => HasNextPage);
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_lastPageCommand = new DelegateCommand(() => GoToPage(TotalPages), () => HasNextPage);
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InitializeAsync();
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}
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#region 页面标题
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/// <summary>页面标题（天统计/周统计/月统计）</summary>
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public string PageTitle { get; }
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/// <summary>周期列表头（日期/周/月份）</summary>
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public string PeriodColumnHeader { get; }
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private static string GetPageTitle(PeriodStatisticType periodType)
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{
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switch (periodType)
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{
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case PeriodStatisticType.Week:
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return "周统计";
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case PeriodStatisticType.Month:
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return "月统计";
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default:
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return "天统计";
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}
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}
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private static string GetPeriodColumnHeader(PeriodStatisticType periodType)
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{
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switch (periodType)
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{
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case PeriodStatisticType.Week:
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return "周";
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case PeriodStatisticType.Month:
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return "月份";
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default:
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return "日期";
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}
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}
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#endregion
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#region 时间范围选项
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/// <summary>按统计周期返回对应的时间范围选项</summary>
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private static List<TimeRangeOption> GetTimeRangeOptions(PeriodStatisticType periodType)
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{
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switch (periodType)
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{
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case PeriodStatisticType.Week:
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return new List<TimeRangeOption>
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{
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new TimeRangeOption { Text = "本周", Value = "week" },
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new TimeRangeOption { Text = "上周", Value = "lastweek" },
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new TimeRangeOption { Text = "最近2周", Value = "last2weeks" },
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new TimeRangeOption { Text = "最近4周", Value = "last4weeks" },
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new TimeRangeOption { Text = "自定义", Value = "custom" }
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};
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case PeriodStatisticType.Month:
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return new List<TimeRangeOption>
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{
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new TimeRangeOption { Text = "本月", Value = "month" },
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new TimeRangeOption { Text = "上月", Value = "lastmonth" },
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new TimeRangeOption { Text = "最近3个月", Value = "last3months" },
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new TimeRangeOption { Text = "最近6个月", Value = "last6months" },
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new TimeRangeOption { Text = "最近12个月", Value = "last12months" },
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new TimeRangeOption { Text = "自定义", Value = "custom" }
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};
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default:
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return new List<TimeRangeOption>
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{
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new TimeRangeOption { Text = "最近5天", Value = "last5" },
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new TimeRangeOption { Text = "最近10天", Value = "last10" },
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new TimeRangeOption { Text = "最近20天", Value = "last20" },
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new TimeRangeOption { Text = "最近30天", Value = "last30" },
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new TimeRangeOption { Text = "自定义", Value = "custom" }
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};
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}
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}
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/// <summary>按统计周期返回默认选中的时间范围值</summary>
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private static string GetDefaultTimeRangeValue(PeriodStatisticType periodType)
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{
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switch (periodType)
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{
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case PeriodStatisticType.Week:
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return "week";
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case PeriodStatisticType.Month:
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return "month";
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default:
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return "last10";
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}
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}
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#endregion
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#region 查询条件
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/// <summary>时间范围选项</summary>
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public ObservableCollection<TimeRangeOption> TimeRangeOptions { get; }
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/// <summary>选中的时间范围</summary>
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public TimeRangeOption SelectedTimeRange
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{
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get { return this.GetValue(x => x.SelectedTimeRange); }
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set
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{
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this.SetValue(x => x.SelectedTimeRange, value);
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ApplyTimeRange();
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OnPropertyChanged(nameof(IsCustomDateRange));
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}
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}
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/// <summary>是否为自定义时间范围</summary>
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public bool IsCustomDateRange
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{
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get { return SelectedTimeRange != null && SelectedTimeRange.Value == "custom"; }
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}
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/// <summary>开始日期</summary>
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public DateTime StartDate
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{
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get { return this.GetValue(x => x.StartDate); }
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set { this.SetValue(x => x.StartDate, value); }
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}
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/// <summary>结束日期</summary>
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public DateTime EndDate
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{
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get { return this.GetValue(x => x.EndDate); }
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set { this.SetValue(x => x.EndDate, value); }
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}
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/// <summary>店铺选项（含“全部店铺”）</summary>
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public ObservableCollection<ShopOption> ShopOptions { get; }
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/// <summary>选中的店铺</summary>
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public ShopOption SelectedShop
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{
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get { return _selectedShop; }
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set
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{
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_selectedShop = value;
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OnPropertyChanged(nameof(SelectedShop));
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}
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}
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#endregion
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#region 统计结果
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/// <summary>汇总卡片数据</summary>
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public ShopRevenueSummary Summary
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{
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get { return _summary; }
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private set
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{
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_summary = value;
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OnPropertyChanged(nameof(Summary));
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}
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}
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/// <summary>当前页的周期×店铺统计表格数据</summary>
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public ObservableCollection<ShopPeriodStatisticsItem> Statistics
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{
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get { return _statistics; }
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private set
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{
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_statistics = value;
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OnPropertyChanged(nameof(Statistics));
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}
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}
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/// <summary>是否正在加载</summary>
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public bool IsLoading
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{
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get { return this.GetValue(x => x.IsLoading); }
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set { this.SetValue(x => x.IsLoading, value); }
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}
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#endregion
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#region 分页
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/// <summary>总行数</summary>
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public int TotalCount
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{
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get { return _totalCount; }
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private set
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{
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_totalCount = value;
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OnPropertyChanged(nameof(TotalCount));
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}
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}
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/// <summary>当前页码（从 1 开始）</summary>
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public int PageIndex
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{
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get { return _pageIndex; }
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private set
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{
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_pageIndex = value;
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OnPropertyChanged(nameof(PageIndex));
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}
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}
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/// <summary>总页数</summary>
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public int TotalPages
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{
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get { return _totalPages; }
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private set
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{
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_totalPages = value;
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OnPropertyChanged(nameof(TotalPages));
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}
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}
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/// <summary>分页提示文本（共 X 条 第 Y / Z 页）</summary>
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public string PagerText
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{
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get { return _pagerText; }
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private set
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{
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_pagerText = value;
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OnPropertyChanged(nameof(PagerText));
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}
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}
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/// <summary>是否有上一页</summary>
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public bool HasPrevPage
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{
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get { return PageIndex > 1; }
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}
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/// <summary>是否有下一页</summary>
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public bool HasNextPage
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{
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get { return PageIndex < TotalPages; }
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}
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/// <summary>是否多页</summary>
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public bool HasMultiplePages
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{
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get { return TotalPages > 1; }
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}
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/// <summary>首页命令</summary>
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public ICommand FirstPageCommand
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{
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get { return _firstPageCommand; }
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}
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/// <summary>上一页命令</summary>
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public ICommand PrevPageCommand
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{
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get { return _prevPageCommand; }
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}
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/// <summary>下一页命令</summary>
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public ICommand NextPageCommand
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{
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get { return _nextPageCommand; }
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}
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/// <summary>末页命令</summary>
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public ICommand LastPageCommand
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{
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get { return _lastPageCommand; }
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}
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/// <summary>跳转到指定页并刷新当前页数据</summary>
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private void GoToPage(int page)
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{
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if (page < 1)
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page = 1;
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if (page > TotalPages)
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page = TotalPages;
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PageIndex = page;
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ApplyPaging();
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}
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/// <summary>按当前页码截取当前页数据并刷新分页状态</summary>
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private void ApplyPaging()
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{
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var pageItems = _allItems
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.Skip((PageIndex - 1) * PageSize)
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.Take(PageSize)
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.ToList();
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Statistics = new ObservableCollection<ShopPeriodStatisticsItem>(pageItems);
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PagerText = string.Format("共 {0} 条 第 {1} / {2} 页", TotalCount, PageIndex, TotalPages);
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OnPropertyChanged(nameof(HasPrevPage));
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OnPropertyChanged(nameof(HasNextPage));
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OnPropertyChanged(nameof(HasMultiplePages));
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_firstPageCommand.RaiseCanExecuteChanged();
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_prevPageCommand.RaiseCanExecuteChanged();
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_nextPageCommand.RaiseCanExecuteChanged();
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_lastPageCommand.RaiseCanExecuteChanged();
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}
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#endregion
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#region 命令
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/// <summary>查询命令</summary>
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public ICommand QueryCommand { get; }
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/// <summary>重置命令</summary>
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public ICommand ResetCommand { get; }
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#endregion
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#region 初始化
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private async void InitializeAsync()
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{
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try
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{
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// 店铺选项
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ShopOptions.Add(new ShopOption { AppKey = string.Empty, ShopName = "全部店铺" });
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var shops = await _service.GetShopOptionsAsync();
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foreach (var shop in shops)
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ShopOptions.Add(shop);
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SelectedShop = ShopOptions.FirstOrDefault();
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// 默认时间范围
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SelectedTimeRange = TimeRangeOptions.FirstOrDefault(t => t.Value == GetDefaultTimeRangeValue(_periodType));
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ApplyTimeRange();
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await LoadAsync();
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}
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catch (Exception ex)
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{
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MessageBox.Show("初始化数据失败：" + ex.Message, "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
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}
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}
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#endregion
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#region 业务逻辑
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/// <summary>根据时间范围选项计算起止日期</summary>
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private void ApplyTimeRange()
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{
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var now = DateTime.Now;
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var today = now.Date;
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var selected = SelectedTimeRange == null ? string.Empty : SelectedTimeRange.Value;
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switch (selected)
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{
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case "last5":
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StartDate = today.AddDays(-4);
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EndDate = now;
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break;
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case "last10":
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StartDate = today.AddDays(-9);
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EndDate = now;
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break;
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case "last20":
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StartDate = today.AddDays(-19);
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EndDate = now;
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break;
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case "last30":
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StartDate = today.AddDays(-29);
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EndDate = now;
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break;
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case "week":
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{
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int diff = today.DayOfWeek == DayOfWeek.Sunday ? 6 : (int)today.DayOfWeek - 1;
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StartDate = today.AddDays(-diff);
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EndDate = now;
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}
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break;
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case "lastweek":
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{
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int diff = today.DayOfWeek == DayOfWeek.Sunday ? 6 : (int)today.DayOfWeek - 1;
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var thisWeekStart = today.AddDays(-diff);
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StartDate = thisWeekStart.AddDays(-7);
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EndDate = thisWeekStart.AddDays(-1).AddHours(23).AddMinutes(59).AddSeconds(59);
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}
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break;
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case "last2weeks":
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StartDate = today.AddDays(-13);
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EndDate = now;
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break;
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case "last4weeks":
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StartDate = today.AddDays(-27);
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EndDate = now;
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break;
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case "month":
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StartDate = new DateTime(today.Year, today.Month, 1);
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EndDate = now;
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break;
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case "lastmonth":
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{
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var firstOfThisMonth = new DateTime(today.Year, today.Month, 1);
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StartDate = firstOfThisMonth.AddMonths(-1);
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EndDate = firstOfThisMonth.AddDays(-1).AddHours(23).AddMinutes(59).AddSeconds(59);
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}
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break;
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case "last3months":
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StartDate = new DateTime(today.Year, today.Month, 1).AddMonths(-2);
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EndDate = now;
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break;
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case "last6months":
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StartDate = new DateTime(today.Year, today.Month, 1).AddMonths(-5);
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EndDate = now;
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break;
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case "last12months":
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StartDate = new DateTime(today.Year, today.Month, 1).AddMonths(-11);
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EndDate = now;
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break;
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default:
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// 自定义：保持用户选择的日期不变
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break;
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}
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}
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/// <summary>执行查询，刷新周期统计表格并回到第一页</summary>
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private async Task LoadAsync()
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{
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if (StartDate > EndDate)
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{
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var temp = StartDate;
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StartDate = EndDate;
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EndDate = temp;
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}
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IsLoading = true;
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try
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{
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var query = new ShopRevenueStatisticsQuery
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{
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StartDate = StartDate,
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EndDate = EndDate,
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ShopKey = SelectedShop == null ? string.Empty : SelectedShop.AppKey,
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};
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var table = await _service.GetPeriodStatisticsAsync(query, _periodType);
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Summary = await _service.GetSummaryAsync(query);
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_allItems = table ?? new List<ShopPeriodStatisticsItem>();
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TotalCount = _allItems.Count;
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TotalPages = TotalCount == 0 ? 1 : (int)Math.Ceiling(TotalCount / (double)PageSize);
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GoToPage(1);
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}
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catch (Exception ex)
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{
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// 查询异常：保留上一次数据，并弹框提示
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MessageBox.Show("查询失败：" + ex.Message, "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
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}
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finally
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{
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IsLoading = false;
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}
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}
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/// <summary>重置查询条件并重新加载</summary>
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private async void Reset()
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{
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SelectedShop = ShopOptions.FirstOrDefault();
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SelectedTimeRange = TimeRangeOptions.FirstOrDefault(t => t.Value == GetDefaultTimeRangeValue(_periodType));
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ApplyTimeRange();
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await LoadAsync();
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}
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#endregion
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}
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} |