39 lines
1.0 KiB
C#
39 lines
1.0 KiB
C#
 
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using System.Text.Json.Nodes;
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namespace PrivaPub.Federation.Objects
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{
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public static class ActivityJson
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{
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public static string Id(JsonNode node) => node switch
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{
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JsonValue value when value.TryGetValue<string>(out var text) => text,
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JsonObject obj => Value(obj, "id") ?? Value(obj, "href"),
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JsonArray array => array.Select(Id).FirstOrDefault(i => i != default),
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_ => default
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};
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public static string Value(JsonNode node, string property) =>
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node is JsonObject obj && obj[property] is JsonValue value && value.TryGetValue<string>(out var text) ? text : default;
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public static IEnumerable<string> Addresses(JsonNode node)
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{
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foreach (var field in new[] { "to", "cc", "bto", "bcc", "audience" })
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{
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switch (node[field])
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{
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case JsonArray array:
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foreach (var item in array)
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{
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var id = Id(item);
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if (id != default)
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yield return id;
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}
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break;
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case JsonNode single when Id(single) is { } id:
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yield return id;
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break;
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}
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}
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}
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}
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}
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