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using System;
using System.Collections.Generic;
using System.Linq;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using Microsoft.AspNetCore.Http;
namespace Jellyfin.Api.Extensions
{
/// <summary>
/// Request Extensions.
/// </summary>
public static class RequestExtensions
{
/// <summary>
/// Get Order By.
/// </summary>
/// <param name="sortBy">Sort By. Comma delimited string.</param>
/// <param name="requestedSortOrder">Sort Order. Comma delimited string.</param>
/// <returns>Order By.</returns>
public static ValueTuple<string, SortOrder>[] GetOrderBy(string sortBy, string requestedSortOrder)
{
var val = sortBy;
if (string.IsNullOrEmpty(val))
{
return Array.Empty<ValueTuple<string, SortOrder>>();
}
var vals = val.Split(',');
if (string.IsNullOrWhiteSpace(requestedSortOrder))
{
requestedSortOrder = "Ascending";
}
var sortOrders = requestedSortOrder.Split(',');
var result = new ValueTuple<string, SortOrder>[vals.Length];
for (var i = 0; i < vals.Length; i++)
{
var sortOrderIndex = sortOrders.Length > i ? i : 0;
var sortOrderValue = sortOrders.Length > sortOrderIndex ? sortOrders[sortOrderIndex] : null;
var sortOrder = string.Equals(sortOrderValue, "Descending", StringComparison.OrdinalIgnoreCase)
? SortOrder.Descending
: SortOrder.Ascending;
result[i] = new ValueTuple<string, SortOrder>(vals[i], sortOrder);
}
return result;
}
/// <summary>
/// Gets the item fields.
/// </summary>
/// <param name="fields">The fields.</param>
/// <returns>IEnumerable{ItemFields}.</returns>
public static ItemFields[] GetItemFields(string fields)
{
if (string.IsNullOrEmpty(fields))
{
return Array.Empty<ItemFields>();
}
return fields.Split(',').Select(v =>
{
if (Enum.TryParse(v, true, out ItemFields value))
{
return (ItemFields?)value;
}
return null;
}).Where(i => i.HasValue).Select(i => i.Value).ToArray();
}
/// <summary>
/// Get parsed filters.
/// </summary>
/// <param name="filters">The filters.</param>
/// <returns>Item filters.</returns>
public static IEnumerable<ItemFilter> GetFilters(string filters)
{
return string.IsNullOrEmpty(filters)
? Array.Empty<ItemFilter>()
: filters.Split(',').Select(v => Enum.Parse<ItemFilter>(v, true));
}
}
}
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