ReleasesJsonSchema.cs

using System.Text.Json;
using System.Text.Json.Serialization;
using System.ComponentModel;
using Serilog;

namespace CreateMatrix;

// https://updates.vmsproxy.com/{release}/releases.json
// https://updates.vmsproxy.com/default/releases.json
// https://updates.vmsproxy.com/metavms/releases.json
// https://updates.vmsproxy.com/digitalwatchdog/releases.json
// https://updates.vmsproxy.com/hanwha/releases.json

public class Release
{
    [JsonPropertyName("product")]
    public string Product { get; set; } = "";

    [JsonPropertyName("version")]
    public string Version { get; set; } = "";

    [JsonPropertyName("publication_type")]
    public string PublicationType { get; set; } = "";

    [JsonPropertyName("release_date")]
    public long? ReleaseDate { get; set; }

    [JsonPropertyName("release_delivery_days")]
    public long? ReleaseDeliveryDays { get; set; }

    public VersionInfo.LabelType GetLabel()
    {
        // Determine the equivalent label
        return PublicationType switch
        {
            // Use Stable or Latest based on if published or not
            ReleasePublication => IsPublished() ? VersionInfo.LabelType.Stable : VersionInfo.LabelType.Latest,
            RcPublication => VersionInfo.LabelType.RC,
            BetaPublication => VersionInfo.LabelType.Beta,
            _ => throw new InvalidEnumArgumentException($"Unknown PublicationType: {PublicationType}")
        };
    }
    public const string ReleasePublication = "release";
    public const string RcPublication = "rc";
    public const string BetaPublication = "beta";
    public const string VmsProduct = "vms";

    private bool IsPublished()
    {
        // Logic follows similar patterns as used in C++ Desktop Client
        // https://github.com/networkoptix/nx_open/blob/526967920636d3119c92a5220290ecc10957bf12/vms/libs/nx_vms_update/src/nx/vms/update/releases_info.cpp#L57
        // releases_info.cpp: ReleasesInfo::selectVmsRelease(), isBuildPublished(), canReceiveUnpublishedBuild()
        return ReleaseDate > 0 && ReleaseDeliveryDays >= 0;
    }
}

public class ReleasesJsonSchema
{
    [JsonPropertyName("releases")]
    public List<Release> Releases { get; set; } = [];

    private static ReleasesJsonSchema FromJson(string jsonString)
    {
        var jsonSchema = JsonSerializer.Deserialize<ReleasesJsonSchema>(jsonString, MatrixJsonSchema.JsonReadOptions);
        ArgumentNullException.ThrowIfNull(jsonSchema);
        return jsonSchema;
    }

    public static List<Release> GetReleases(HttpClient httpClient, string productName)
    {
        // Load releases JSON
        // https://updates.vmsproxy.com/{product}/releases.json
        Uri releasesUri = new($"https://updates.vmsproxy.com/{productName}/releases.json");
        Log.Logger.Information("Getting release information from {Uri}", releasesUri);
        var jsonString = httpClient.GetStringAsync(releasesUri).Result;

        // Deserialize JSON
        var releasesSchema = FromJson(jsonString);
        ArgumentNullException.ThrowIfNull(releasesSchema);
        ArgumentNullException.ThrowIfNull(releasesSchema.Releases);
        ArgumentOutOfRangeException.ThrowIfZero(releasesSchema.Releases.Count);

        // Return releases
        return releasesSchema.Releases;
    }
}