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74 lines
2.7 KiB
C#
74 lines
2.7 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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namespace ThingsGateway.Components;
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/// <summary>
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/// 获取Web客户端时差
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/// </summary>
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public class InitTimezone : IDisposable
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{
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static readonly string _timezoneOffsetKey = "timezoneOffset";
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readonly IJSRuntime _jsRuntime;
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readonly CookieStorage _storage;
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TimeSpan _timezoneOffset;
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IJSObjectReference _helper;
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/// <summary>
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/// 当前的客户端时差
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/// </summary>
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public TimeSpan TimezoneOffset
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{
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get => _timezoneOffset;
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private set
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{
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_timezoneOffset = value;
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}
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}
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="jsRuntime"></param>
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/// <param name="storage"></param>
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/// <param name="serviceProvider"></param>
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public InitTimezone(IJSRuntime jsRuntime, CookieStorage storage, IDefaultTimezoneOffsetAccessor defaultTimezoneOffsetAccessor)
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{
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_jsRuntime = jsRuntime;
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_storage = storage;
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_timezoneOffset = defaultTimezoneOffsetAccessor.GetTimezoneOffsetResult();
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}
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/// <summary>
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/// 获取Web客户端时差
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/// </summary>
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/// <returns></returns>
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public async Task SetTimezoneOffsetAsync()
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{
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var timezoneOffsetResult = await _storage.GetCookieAsync(_timezoneOffsetKey);
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if (string.IsNullOrEmpty(timezoneOffsetResult) is false)
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{
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TimezoneOffset = TimeSpan.FromMinutes(Convert.ToDouble(timezoneOffsetResult));
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await _storage.SetItemAsync(_timezoneOffsetKey, TimezoneOffset.TotalMinutes.ToString());
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return;
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}
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_helper ??= await _jsRuntime.InvokeAsync<IJSObjectReference>("import", $"{BlazorResourceConst.ResourceUrl}js/getTimezoneOffset.js");
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var offset = await _helper.InvokeAsync<double>("getTimezoneOffset");
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TimezoneOffset = TimeSpan.FromMinutes(-offset);
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await _storage.SetItemAsync(_timezoneOffsetKey, TimezoneOffset.TotalMinutes.ToString());
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}
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/// <inheritdoc/>
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public void Dispose()
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{
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_helper?.DisposeAsync();
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}
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}
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