using Microsoft.EntityFrameworkCore.Storage;
using Microsoft.Extensions.Logging;
using SVSim.Database.Enums;
using SVSim.Database.Models;
using SVSim.Database.Models.Config;

namespace SVSim.Database.Services.Inventory;

internal sealed class InventoryTransaction : IInventoryTransaction
{
    private readonly SVSimDbContext _db;
    private readonly IDbContextTransaction _dbTx;
    private readonly ILogger _log;
    private readonly FreeplayConfig _freeplay;
    private bool _committed;

    public Viewer Viewer { get; }
    public bool IsFreeplay => _freeplay.Enabled;

    public InventoryTransaction(
        SVSimDbContext db,
        IDbContextTransaction dbTx,
        Viewer viewer,
        FreeplayConfig freeplay,
        ILogger log)
    {
        _db = db;
        _dbTx = dbTx;
        Viewer = viewer;
        _freeplay = freeplay;
        _log = log;
    }

    // Implementations land in later tasks. Throw NotImplementedException to keep the build green.
    public Task<SpendResult> TrySpendAsync(SpendCurrency currency, long cost, CancellationToken ct = default)
        => throw new NotImplementedException();

    public Task<SpendResult> TryDebitAsync(UserGoodsType type, long detailId, int num, CancellationToken ct = default)
        => throw new NotImplementedException();

    public Task<IReadOnlyList<GrantedReward>> GrantAsync(UserGoodsType type, long detailId, int num, CancellationToken ct = default)
        => throw new NotImplementedException();

    public Task<int> BackfillCardCosmeticsAsync(CancellationToken ct = default)
        => throw new NotImplementedException();

    public long EffectiveBalance(SpendCurrency currency) => throw new NotImplementedException();
    public bool OwnsCard(long cardId) => throw new NotImplementedException();
    public bool OwnsCosmetic(CosmeticType type, int id) => throw new NotImplementedException();

    public Task<InventoryCommitResult> CommitAsync(CancellationToken ct = default)
        => throw new NotImplementedException();

    public async ValueTask DisposeAsync()
    {
        if (!_committed)
        {
            await _dbTx.RollbackAsync();
            _db.ChangeTracker.Clear();
        }
        await _dbTx.DisposeAsync();
    }
}