using NUnit.Framework;
using ProjectM.Simulation;

namespace ProjectM.Tests
{
    /// <summary>
    /// Pins <see cref="SaveService.RollTerminalCampaignForward"/>: a TERMINAL save (Victory/Loss latched)
    /// Continues as a fresh campaign — outcome / goal meter / core reset to 0 (the spawn restore guards re-map
    /// 0 to InProgress / empty / baked-full) — while the permanent channel (meta tiers, run counters, ledger,
    /// structures) survives untouched. In-progress saves and null are no-ops.
    /// </summary>
    public class TerminalCampaignRollTests
    {
        [Test]
        public void TerminalSave_RollsForward_KeepingBaseAndMeta()
        {
            var data = new SaveData
            {
                RunOutcome = 1, // Victory latched
                GoalCharge = 4,
                GoalTarget = 4,
                CoreCurrent = 37,
                RunsCompleted = 4,
                MaxDepthReached = 7,
                MetaUpgrades = new[] { new MetaUpgradeSave { ClassId = 0, UpgradeId = 1, Tier = 2 } },
                Ledger = new[] { new LedgerRow { ItemId = ResourceId.Ore, Count = 123 } },
            };

            SaveService.RollTerminalCampaignForward(data);

            Assert.AreEqual(0, data.RunOutcome, "outcome latch reset");
            Assert.AreEqual(0, data.GoalCharge, "goal meter reset");
            Assert.AreEqual(0, data.CoreCurrent, "core resets to 0 -> restore guard re-maps to baked-full");
            Assert.AreEqual(4, data.RunsCompleted, "permanent counters survive");
            Assert.AreEqual(7, data.MaxDepthReached, "permanent counters survive");
            Assert.AreEqual(2, data.MetaUpgrades[0].Tier, "meta tiers survive");
            Assert.AreEqual(123, data.Ledger[0].Count, "the ledger survives");
        }

        [Test]
        public void InProgressSave_AndNull_AreNoOps()
        {
            var data = new SaveData { RunOutcome = 0, GoalCharge = 2, CoreCurrent = 50 };
            SaveService.RollTerminalCampaignForward(data);
            Assert.AreEqual(2, data.GoalCharge);
            Assert.AreEqual(50, data.CoreCurrent);
            Assert.DoesNotThrow(() => SaveService.RollTerminalCampaignForward(null));
        }
    }
}