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using System.Collections.ObjectModel;
using Nop.Core.Domain.Customers;
namespace Nop.Services.Helpers;
///
/// Represents a datetime helper
///
public partial interface IDateTimeHelper
{
///
/// Returns a sorted collection of all the time zones
///
/// A read-only collection of System.TimeZoneInfo objects.
ReadOnlyCollection GetSystemTimeZones();
///
/// Converts the date and time to current user date and time
///
/// The date and time (represents local system time or UTC time) to convert.
///
/// A task that represents the asynchronous operation
/// The task result contains a DateTime value that represents time that corresponds to the dateTime parameter in customer time zone.
///
Task ConvertToUserTimeAsync(DateTime dt);
///
/// Converts the date and time to current user date and time
///
/// The date and time (represents local system time or UTC time) to convert.
/// The source datetimekind
///
/// A task that represents the asynchronous operation
/// The task result contains a DateTime value that represents time that corresponds to the dateTime parameter in customer time zone.
///
Task ConvertToUserTimeAsync(DateTime dt, DateTimeKind sourceDateTimeKind);
///
/// Converts the date and time to current user date and time
///
/// The date and time to convert.
/// The time zone of dateTime.
/// The time zone to convert dateTime to.
/// A DateTime value that represents time that corresponds to the dateTime parameter in customer time zone.
DateTime ConvertToUserTime(DateTime dt, TimeZoneInfo sourceTimeZone, TimeZoneInfo destinationTimeZone);
///
/// Converts the date and time to Coordinated Universal Time (UTC)
///
/// The date and time (represents local system time or UTC time) to convert.
/// A DateTime value that represents the Coordinated Universal Time (UTC) that corresponds to the dateTime parameter. The DateTime value's Kind property is always set to DateTimeKind.Utc.
DateTime ConvertToUtcTime(DateTime dt);
///
/// Converts the date and time to Coordinated Universal Time (UTC)
///
/// The date and time (represents local system time or UTC time) to convert.
/// The source datetimekind
/// A DateTime value that represents the Coordinated Universal Time (UTC) that corresponds to the dateTime parameter. The DateTime value's Kind property is always set to DateTimeKind.Utc.
DateTime ConvertToUtcTime(DateTime dt, DateTimeKind sourceDateTimeKind);
///
/// Converts the date and time to Coordinated Universal Time (UTC)
///
/// The date and time to convert.
/// The time zone of dateTime.
/// A DateTime value that represents the Coordinated Universal Time (UTC) that corresponds to the dateTime parameter. The DateTime value's Kind property is always set to DateTimeKind.Utc.
DateTime ConvertToUtcTime(DateTime dt, TimeZoneInfo sourceTimeZone);
///
/// Gets a customer time zone
///
/// Customer
///
/// A task that represents the asynchronous operation
/// The task result contains the customer time zone; if customer is null, then default store time zone
///
Task GetCustomerTimeZoneAsync(Customer customer);
///
/// Gets the current user time zone
///
///
/// A task that represents the asynchronous operation
/// The task result contains the current user time zone
///
Task GetCurrentTimeZoneAsync();
///
/// Gets or sets a default store time zone
///
TimeZoneInfo DefaultStoreTimeZone
{
get;
}
}