103 lines
3.3 KiB
C#
103 lines
3.3 KiB
C#
using System.Reflection;
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using System.Text;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace DiscordBotCore.Utilities;
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public static class JsonManager
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{
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public static async Task<string> ConvertToJson<T>(List<T> data, string[] propertyNamesToUse)
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{
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if (data == null) throw new ArgumentNullException(nameof(data));
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if (propertyNamesToUse == null) throw new ArgumentNullException(nameof(propertyNamesToUse));
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// Use reflection to filter properties dynamically
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var filteredData = data.Select(item =>
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{
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if (item == null) return null;
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var type = typeof(T);
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var propertyInfos = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
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// Create a dictionary with specified properties and their values
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var selectedProperties = propertyInfos
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.Where(p => propertyNamesToUse.Contains(p.Name))
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.ToDictionary(p => p.Name, p => p.GetValue(item));
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return selectedProperties;
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}).ToList();
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// Serialize the filtered data to JSON
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var options = new JsonSerializerOptions
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{
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WriteIndented = true, // For pretty-print JSON; remove if not needed
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DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
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};
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return await Task.FromResult(JsonSerializer.Serialize(filteredData, options));
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}
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public static async Task<string> ConvertToJsonString<T>(T Data)
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{
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var str = new MemoryStream();
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await JsonSerializer.SerializeAsync(str, Data, typeof(T), new JsonSerializerOptions
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{
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WriteIndented = false,
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});
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var result = Encoding.ASCII.GetString(str.ToArray());
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await str.FlushAsync();
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str.Close();
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return result;
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}
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/// <summary>
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/// Save to JSON file
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/// </summary>
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/// <typeparam name="T">The class type</typeparam>
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/// <param name="file">The file path</param>
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/// <param name="Data">The values</param>
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/// <returns></returns>
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public static async Task SaveToJsonFile<T>(string file, T Data)
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{
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var str = new MemoryStream();
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await JsonSerializer.SerializeAsync(str, Data, typeof(T), new JsonSerializerOptions
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{
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WriteIndented = true,
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}
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);
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await File.WriteAllBytesAsync(file, str.ToArray());
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await str.FlushAsync();
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str.Close();
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}
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/// <summary>
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/// Convert json text or file to some kind of data
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/// </summary>
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/// <typeparam name="T">The data type</typeparam>
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/// <param name="input">The file or json text</param>
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/// <returns></returns>
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public static async Task<T> ConvertFromJson<T>(string input)
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{
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Stream text;
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if (File.Exists(input))
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text = new MemoryStream(await File.ReadAllBytesAsync(input));
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else
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text = new MemoryStream(Encoding.ASCII.GetBytes(input));
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text.Position = 0;
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JsonSerializerOptions options = new JsonSerializerOptions()
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{
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PropertyNameCaseInsensitive = true
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};
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var obj = await JsonSerializer.DeserializeAsync<T>(text, options);
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await text.FlushAsync();
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text.Close();
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return (obj ?? default)!;
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}
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}
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