PalacePal/Pal.Client/Database/RemoteEncounter.cs

using System.ComponentModel.DataAnnotations;
using Pal.Client.Extensions;
using Pal.Client.Net;

namespace Pal.Client.Database;

/// <summary>
/// To avoid sending too many requests to the server, we cache which locations have been seen
/// locally. These never expire, and locations which have been seen with a specific account
/// are never sent to the server again.
///
/// To be marked as seen, it needs to be essentially processed by <see cref="RemoteApi.MarkAsSeen"/>.
/// </summary>
internal sealed class RemoteEncounter
{
    [Key]
    public int Id { get; private set; }

    public int ClientLocationId { get; private set; }
    public ClientLocation ClientLocation { get; private set; } = null!;

    /// <summary>
    /// Partial account id. This is partially unique - however problems would (in theory)
    /// only occur once you have two account-ids where the first 13 characters are equal.
    /// </summary>
    [MaxLength(13)]
    public string AccountId { get; private set; }

    private RemoteEncounter(int clientLocationId, string accountId)
    {
        ClientLocationId = clientLocationId;
        AccountId = accountId;
    }

    public RemoteEncounter(ClientLocation clientLocation, string accountId)
    {
        ClientLocation = clientLocation;
        AccountId = accountId.ToPartialId();
    }
}