using XFEEDToolBox.Core.Galaxy;
using XFEExtension.NetCore.XUnit.Attributes;

namespace XFEEDToolBox.Test;

[TestFixture]
public class GalaxyHistoricalTradeTests
{
    private static readonly DateTimeOffset RecordedAt=DateTimeOffset.Parse("2026-10-20T02:03:04Z");
    private static OriginalTradeDataSnapshot Cache(ulong commander,long system,DateTimeOffset time,params OriginalTradeRoute[] routes)=>new(commander,system,time,routes,"");
    [Test] public void PlayerAndNpcFlowsUseActualAmountsDirectionCommodityAndTheirOriginalCacheTime()
    {
        var snapshots=new[]{Cache(42,1,RecordedAt,new OriginalTradeRoute(1,2,"Gold",7,0),new(2,1,"Silver",0,3),new(1,3,"Tobacco",1,2)),Cache(99,1,RecordedAt,new OriginalTradeRoute(1,2,"Wrong account",100,100))};
        var all=GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.All,null);Check.Equal(3,all.Count);Check.That(all.All(e=>e.CachedAt==RecordedAt));
        var players=GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.Players,null);Check.Equal(2,players.Count);Check.That(!players.Any(e=>e.Commodity=="Gold"));
        var npcs=GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.Npc,new HashSet<string>{"gold"});Check.Equal(1,npcs.Count);Check.Equal(1L,npcs[0].FromSystemAddress);Check.Equal(2L,npcs[0].ToSystemAddress);Check.Equal(7d,npcs[0].Amount(GalaxyTradeFlowSource.All));
        Check.Equal(0,GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.All,new HashSet<string>()).Count);Check.Equal(0,GalaxyHistoricalTrade.Select(snapshots,0,GalaxyTradeFlowSource.All,null).Count);
    }
    [Test] public void NewerEndpointCacheSupersedesAnOlderPositiveFlowEvenWhenItNowReportsZero()
    {
        var snapshots=new[]{Cache(42,1,RecordedAt,new OriginalTradeRoute(1,2,"Gold",7,4)),Cache(42,2,RecordedAt.AddDays(1),new OriginalTradeRoute(1,2,"gold",9,0))};
        Check.Equal(0,GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.Players,null).Count);
        var npcs=GalaxyHistoricalTrade.Select(snapshots,42,GalaxyTradeFlowSource.Npc,null);Check.Equal(1,npcs.Count);Check.Equal(9d,npcs[0].NpcAmount);Check.Equal(2L,npcs[0].CacheSystemAddress);Check.Equal(RecordedAt.AddDays(1),npcs[0].CachedAt);
    }
    [Test] public void ALineRequiresBothExactAddressesAndMeasuredCoordinatesWithoutSubstitutingANearbySystem()
    {
        const long large=9007199254740993;
        var edges=GalaxyHistoricalTrade.Select([Cache(42,large,RecordedAt,new OriginalTradeRoute(large,2,"Gold",1,2))],42,GalaxyTradeFlowSource.All,null);
        var from=new GalacticSystem("Actual from",new(1,2,3)){SystemAddress=large};var to=new GalacticSystem("Actual to",new(4,5,6)){SystemAddress=2};
        var known=new Dictionary<long,GalacticSystem>{{large,from},{2,to with{SystemAddress=3}}};var projection=GalaxyHistoricalTrade.Project(edges,known);
        Check.Equal(0,projection.Flows.Count);Check.That(projection.MissingSystemAddresses.SequenceEqual(new[]{2L}));
        known[2]=to;projection=GalaxyHistoricalTrade.Project(edges,known);Check.Equal(1,projection.Flows.Count);Check.Equal(large,projection.Flows[0].From.SystemAddress);Check.Equal(to.Position,projection.Flows[0].To.Position);Check.Equal(RecordedAt,projection.OldestCache);Check.Equal(0,projection.MissingSystemAddresses.Count);
        known[2]=to with{Position=new(double.NaN,0,0)};Check.Equal(0,GalaxyHistoricalTrade.Project(edges,known).Flows.Count);
    }
    [Test] public void HistoricalDisplayControlsNeverActivateOrAlterTheStellarQueryPredicate()
    {
        var initial=GalaxyMapFilter.Default;var changed=initial with{ShowHistoricalTradeFlows=true,HistoricalTradeSource=GalaxyTradeFlowSource.Npc,HistoricalTradeCommodities=new HashSet<string>{"gold"}};
        Check.That(!changed.IsQueryActive&&changed.Mode==GalaxyMapMode.Realistic);Check.Equal(initial.QueryKey,changed.QueryKey);
    }
}