66 lines
2.0 KiB
C#
66 lines
2.0 KiB
C#
using ComponentOrientedPlatform.Abstractions;
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using ComponentOrientedPlatform.Model;
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using Microsoft.Extensions.Configuration;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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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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using System.Threading.Tasks;
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namespace WinFormsComponentOrientedHost.Licensing;
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public sealed class LicenseProvider : ILicenseProvider
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{
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private readonly LicenseModel _model;
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private LicenseProvider(LicenseModel model)
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{
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_model = model;
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}
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public AccessLevel CurrentLevel => _model.Level;
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public bool IsExpired => _model.Expires.HasValue && _model.Expires.Value.Date < DateTime.UtcNow.Date;
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public string? Owner => _model.Owner;
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public static ILicenseProvider FromConfig(IConfiguration cfg, IAppLogger log)
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{
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var path = cfg["License:Path"];
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if (string.IsNullOrWhiteSpace(path) || !File.Exists(path))
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{
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log.Warn("License file not found, fallback to Minimal.");
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return new LicenseProvider(new LicenseModel { Level = AccessLevel.Minimal });
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}
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try
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{
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var json = File.ReadAllText(path);
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var opts = new JsonSerializerOptions
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{
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PropertyNameCaseInsensitive = true
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};
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opts.Converters.Add(new JsonStringEnumConverter(allowIntegerValues: true));
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var model = JsonSerializer.Deserialize<LicenseModel>(json, opts)
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?? new LicenseModel { Level = AccessLevel.Minimal };
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return new LicenseProvider(model);
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}
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catch (Exception ex)
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{
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log.Error("License read error", ex);
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return new LicenseProvider(new LicenseModel { Level = AccessLevel.Minimal });
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}
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}
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private sealed class LicenseModel
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{
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public AccessLevel Level { get; set; } = AccessLevel.Minimal;
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public DateTime? Expires { get; set; }
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public string? Owner { get; set; }
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}
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}
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