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using System;
using System.Collections.Generic;
using Jellyfin.Extensions;
namespace MediaBrowser.Model.Extensions;
/// <summary>
/// Defines the <see cref="ContainerHelper"/> class.
/// </summary>
public static class ContainerHelper
{
/// <summary>
/// Compares two containers, returning true if an item in <paramref name="inputContainer"/> exists
/// in <paramref name="profileContainers"/>.
/// </summary>
/// <param name="profileContainers">The comma-delimited string being searched.
/// If the parameter begins with the <c>-</c> character, the operation is reversed.
/// If the parameter is empty or null, all containers in <paramref name="inputContainer"/> will be accepted.</param>
/// <param name="inputContainer">The comma-delimited string being matched.</param>
/// <returns>The result of the operation.</returns>
public static bool ContainsContainer(string? profileContainers, string? inputContainer)
{
var isNegativeList = false;
if (profileContainers is not null && profileContainers.StartsWith('-'))
{
isNegativeList = true;
profileContainers = profileContainers[1..];
}
return ContainsContainer(profileContainers, isNegativeList, inputContainer);
}
/// <summary>
/// Compares two containers, returning true if an item in <paramref name="inputContainer"/> exists
/// in <paramref name="profileContainers"/>.
/// </summary>
/// <param name="profileContainers">The comma-delimited string being searched.
/// If the parameter begins with the <c>-</c> character, the operation is reversed.
/// If the parameter is empty or null, all containers in <paramref name="inputContainer"/> will be accepted.</param>
/// <param name="inputContainer">The comma-delimited string being matched.</param>
/// <returns>The result of the operation.</returns>
public static bool ContainsContainer(string? profileContainers, ReadOnlySpan<char> inputContainer)
{
var isNegativeList = false;
if (profileContainers is not null && profileContainers.StartsWith('-'))
{
isNegativeList = true;
profileContainers = profileContainers[1..];
}
return ContainsContainer(profileContainers, isNegativeList, inputContainer);
}
/// <summary>
/// Compares two containers, returning <paramref name="isNegativeList"/> if an item in <paramref name="inputContainer"/>
/// does not exist in <paramref name="profileContainers"/>.
/// </summary>
/// <param name="profileContainers">The comma-delimited string being searched.
/// If the parameter is empty or null, all containers in <paramref name="inputContainer"/> will be accepted.</param>
/// <param name="isNegativeList">The boolean result to return if a match is not found.</param>
/// <param name="inputContainer">The comma-delimited string being matched.</param>
/// <returns>The result of the operation.</returns>
public static bool ContainsContainer(string? profileContainers, bool isNegativeList, string? inputContainer)
{
if (string.IsNullOrEmpty(inputContainer))
{
return isNegativeList;
}
return ContainsContainer(profileContainers, isNegativeList, inputContainer.AsSpan());
}
/// <summary>
/// Compares two containers, returning <paramref name="isNegativeList"/> if an item in <paramref name="inputContainer"/>
/// does not exist in <paramref name="profileContainers"/>.
/// </summary>
/// <param name="profileContainers">The comma-delimited string being searched.
/// If the parameter is empty or null, all containers in <paramref name="inputContainer"/> will be accepted.</param>
/// <param name="isNegativeList">The boolean result to return if a match is not found.</param>
/// <param name="inputContainer">The comma-delimited string being matched.</param>
/// <returns>The result of the operation.</returns>
public static bool ContainsContainer(string? profileContainers, bool isNegativeList, ReadOnlySpan<char> inputContainer)
{
if (string.IsNullOrEmpty(profileContainers))
{
// Empty profiles always support all containers/codecs.
return true;
}
var allInputContainers = inputContainer.Split(',');
var allProfileContainers = profileContainers.SpanSplit(',');
foreach (var container in allInputContainers)
{
if (!container.IsEmpty)
{
foreach (var profile in allProfileContainers)
{
if (!profile.IsEmpty && container.Equals(profile, StringComparison.OrdinalIgnoreCase))
{
return !isNegativeList;
}
}
}
}
return isNegativeList;
}
/// <summary>
/// Compares two containers, returning <paramref name="isNegativeList"/> if an item in <paramref name="inputContainer"/>
/// does not exist in <paramref name="profileContainers"/>.
/// </summary>
/// <param name="profileContainers">The profile containers being matched searched.
/// If the parameter is empty or null, all containers in <paramref name="inputContainer"/> will be accepted.</param>
/// <param name="isNegativeList">The boolean result to return if a match is not found.</param>
/// <param name="inputContainer">The comma-delimited string being matched.</param>
/// <returns>The result of the operation.</returns>
public static bool ContainsContainer(IReadOnlyList<string>? profileContainers, bool isNegativeList, string inputContainer)
{
if (profileContainers is null)
{
// Empty profiles always support all containers/codecs.
return true;
}
var allInputContainers = Split(inputContainer);
foreach (var container in allInputContainers)
{
foreach (var profile in profileContainers)
{
if (string.Equals(profile, container, StringComparison.OrdinalIgnoreCase))
{
return !isNegativeList;
}
}
}
return isNegativeList;
}
/// <summary>
/// Splits and input string.
/// </summary>
/// <param name="input">The input string.</param>
/// <returns>The result of the operation.</returns>
public static string[] Split(string? input)
{
return input?.Split(',', StringSplitOptions.RemoveEmptyEntries) ?? [];
}
}
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