Burak Kaan Köse
80 lines
2.0 KiB
C#
80 lines
2.0 KiB
C#
using System;
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using CommunityToolkit.Mvvm.ComponentModel;
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namespace Wino.Mail.ViewModels.Collections;
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/// <summary>
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/// Base class for group headers in the flat collection
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/// </summary>
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public abstract partial class GroupHeaderBase : ObservableObject
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{
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[ObservableProperty]
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private int itemCount;
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[ObservableProperty]
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private int unreadCount;
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protected GroupHeaderBase(string key, string displayName)
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{
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Key = key;
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DisplayName = displayName;
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}
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/// <summary>
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/// The unique key for this group (used for sorting and identification)
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/// </summary>
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public string Key { get; }
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/// <summary>
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/// The display name shown in the UI
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/// </summary>
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public string DisplayName { get; }
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}
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/// <summary>
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/// Group header for date-based grouping
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/// </summary>
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public partial class DateGroupHeader : GroupHeaderBase
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{
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public DateGroupHeader(DateTime date) : base(date.ToString("yyyy-MM-dd"), FormatDisplayName(date))
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{
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Date = date;
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}
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/// <summary>
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/// The date this group represents
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/// </summary>
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public DateTime Date { get; }
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private static string FormatDisplayName(DateTime date)
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{
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var today = DateTime.Today;
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var yesterday = today.AddDays(-1);
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return date.Date switch
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{
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var d when d == today => "Today",
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var d when d == yesterday => "Yesterday",
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var d when d >= today.AddDays(-7) => date.ToString("dddd"), // This week
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var d when d.Year == today.Year => date.ToString("MMMM dd"), // This year
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_ => date.ToString("MMMM dd, yyyy") // Other years
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};
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}
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}
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/// <summary>
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/// Group header for sender name-based grouping
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/// </summary>
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public partial class SenderGroupHeader : GroupHeaderBase
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{
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public SenderGroupHeader(string senderName) : base(senderName, senderName)
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{
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SenderName = senderName;
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}
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/// <summary>
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/// The sender name this group represents
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/// </summary>
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public string SenderName { get; }
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}
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