using LCU.API.Internal.Operations.IncentiveApi.Exceptions;
using LCU.Library.Internal.IncentiveApiModels.Entities;
using LCU.API.Internal.Operations.IncentiveApiLib.Repositories;

namespace LCU.API.Internal.Operations.IncentiveApi.Services.DuplicateDetection;

public class DuplicateDetectionService : IDuplicateDetectionService
{
    private readonly IEnumerable<IDuplicateDetectionStrategy> _strategies;

    public DuplicateDetectionService(IEnumerable<IDuplicateDetectionStrategy> strategies, IActivityRepository activityRepository)
    {
        _strategies = strategies;
    }

    public async Task<IReadOnlyCollection<Activity>> TryFindDuplicates(Activity activity)
    {
        var strategy = _strategies.FirstOrDefault(x => x.CanDecideActivity(activity));

        if (strategy != null)
        {
            return await strategy.FindDuplicates(activity);
        }

        throw new NoAvailableStrategy(
            $"No Duplicate Detection Strategy available, {activity.Id} - {activity.Product}:{activity.Type}");
    }
}