Salvage expeditions (#12745)

Content.Server/Salvage/Expeditions/SalvageExpeditionComponent.cs

@@ -0,0 +1,44 @@
+using Content.Shared.Salvage;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+namespace Content.Server.Salvage.Expeditions;
+
+/// <summary>
+/// Designates this entity as holding a salvage expedition.
+/// </summary>
+[RegisterComponent]
+public sealed class SalvageExpeditionComponent : Component
+{
+    public SalvageMissionParams MissionParams = default!;
+
+    /// <summary>
+    /// Where the dungeon is located for initial announcement.
+    /// </summary>
+    [DataField("dungeonLocation")]
+    public Vector2 DungeonLocation = Vector2.Zero;
+
+    /// <summary>
+    /// When the expeditions ends.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite), DataField("endTime", customTypeSerializer: typeof(TimeOffsetSerializer))]
+    public TimeSpan EndTime;
+
+    /// <summary>
+    /// Station whose mission this is.
+    /// </summary>
+    [ViewVariables, DataField("station")]
+    public EntityUid Station;
+
+    [ViewVariables] public bool Completed = false;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("stage")]
+    public ExpeditionStage Stage = ExpeditionStage.Added;
+}
+
+public enum ExpeditionStage : byte
+{
+    Added,
+    Running,
+    Countdown,
+    FinalCountdown,
+}