Pack opening

SVSim.EmulatedEntrypoint/Models/Dtos/PackChildGachaDto.cs

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+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos;
+
+[MessagePackObject]
+public class PackChildGachaDto
+{
+    [JsonPropertyName("gacha_id")]
+    [Key("gacha_id")]
+    public int GachaId { get; set; }
+
+    [JsonPropertyName("type_detail")]
+    [Key("type_detail")]
+    public int TypeDetail { get; set; }
+
+    [JsonPropertyName("cost")]
+    [Key("cost")]
+    public int Cost { get; set; }
+
+    [JsonPropertyName("count")]
+    [Key("count")]
+    public int Count { get; set; } = 8;
+
+    /// <summary>Stringified on the wire when present (prod sends "10001" not 10001).</summary>
+    [JsonPropertyName("item_id")]
+    [Key("item_id")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public string? ItemId { get; set; }
+
+    [JsonPropertyName("item_number")]
+    [Key("item_number")]
+    public int ItemNumber { get; set; }
+
+    [JsonPropertyName("is_daily_single")]
+    [Key("is_daily_single")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+    public bool IsDailySingle { get; set; }
+
+    [JsonPropertyName("override_increase_gacha_point")]
+    [Key("override_increase_gacha_point")]
+    public string OverrideIncreaseGachaPoint { get; set; } = "0";
+}