Imperative approach to insertOrUpdate

FruitRepository.cs

namespace Sandbox.InserOrUpdate
{
    public class FruitRepository
    {
        public int InsertOrUpdate(FruitMetadata fruit)
        {
            var id = FindByAuthorityId(fruit.FruitAuthorityId) ?? FindByCouncilId(fruit.FruitCouncilId) ?? FindByName(fruit.Name);
            return id.HasValue ? Update(id.Value, fruit) : Insert(fruit);
        }

        // Actual database access has been ommited for brevity.
        private int? FindByAuthorityId(int authorityId) => null;
        private int? FindByCouncilId(int councilId) => null;
        private int? FindByName(string name) => null;
        private int Insert(FruitMetadata fruit) => 1;
        private int Update(int id, FruitMetadata fruit) => id;
    }

    public class FruitMetadata
    {
        public string Color { get; set; }
        public int FruitAuthorityId { get; set; }
        public int FruitCouncilId { get; set; }
        public string Name { get; set; }
        public string Shape { get; set; }
    }
}