43 lines
1.2 KiB
C#
43 lines
1.2 KiB
C#
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using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
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namespace OliverBooth.Data;
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internal sealed class PermissionListConverter : ValueConverter<IReadOnlyList<Permission>, string>
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{
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public PermissionListConverter() : this(';')
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{
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}
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public PermissionListConverter(char separator) :
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base(v => ToProvider(v, separator),
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s => FromProvider(s, separator))
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{
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}
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private static IReadOnlyList<Permission> FromProvider(string source, char separator = ';')
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{
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var permissions = new List<Permission>();
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foreach (string permission in source.Split(separator))
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{
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string name = permission;
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var allowed = true;
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if (name.Length > 1 && name[0] == '-')
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{
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name = name[1..];
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allowed = false;
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}
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permissions.Add(new Permission(name, allowed));
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}
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return permissions.AsReadOnly();
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}
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private static string ToProvider(IEnumerable<Permission> permissions, char separator = ';')
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{
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return string.Join(separator, permissions.Select(p => $"{(p.IsAllowed ? "-" : "")}{p.Name}"));
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}
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}
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