using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CDP
{
    public class ContactsDocument
    {
        public string id
        {
            get
            {
                return GenPartitionKey(AppKey, UserId, Index);
            }
        }
        public string AppKey { get; set; }
        public string UserId { get; set; }
        public int Index { get; set; }
        public List<ContactRecord> Records { get; set; }

        public ContactsDocument()
        {
            Index = 0;
            Records = new List<ContactRecord>();
        }

        public static string GenRootPartitionKey(string id, DateTime dt)
        {
            return string.Format($"{id}-{dt.Year}-{dt.DayOfYear}");
        }

        public static string GenPartitionKey(string appKey, string userId, int index = 0)
        {
            return string.Format($"{appKey}-{userId}-{index}");
        }
    }

    public class ContactRecord
    {
        public string Name { get; set; }
        public string Email { get; set; }
        public string Phone { get; set; }
        public string Address { get; set; }
        public string Company { get; set; }
        public DateTime EventTime { get; set; }

        public ContactRecord()
        {
            EventTime = DateTime.UtcNow;
        }

        public ContactRecord(string name, string email, string phone, string address, string company)
        {
            Name = name;
            Email = email;
            Phone = phone;
            Address = address;
            Company = company;
            EventTime = DateTime.UtcNow;
        }

        public int CalculateRecordSize()
        {
            int size = 0;

            size += 16; // sizeof(DateTime);                // EventTime
            size += Encoding.UTF8.GetByteCount(Name) == 0 ? 20 : Encoding.UTF8.GetByteCount(Name);  // UserId                          
            size += Encoding.UTF8.GetByteCount(Email) == 0 ? 50 : Encoding.UTF8.GetByteCount(Email);
            size += Encoding.UTF8.GetByteCount(Phone) == 0 ? 15 : Encoding.UTF8.GetByteCount(Phone);
            size += Encoding.UTF8.GetByteCount(Address) == 0 ? 70 : Encoding.UTF8.GetByteCount(Address);
            size += Encoding.UTF8.GetByteCount(Company) == 0 ? 20 : Encoding.UTF8.GetByteCount(Company);

            size += sizeof(int);
            return size;
        }

    }
    public class MetadataDocumentContact
    {
        public string id { get; set; }
        public List<string> PartitionKeys { get; set; }

        public MetadataDocumentContact()
        {
            PartitionKeys = new List<string>();
            id = id + "-meta";
        }
        public string GetLatestKey(string appKey, string userId)
        {
            PartitionKeys.Sort();
            if (PartitionKeys.Count == 0)
                return GroupsDocument.GenPartitionKey(appKey, userId);

            return PartitionKeys.Last();
        }
    }
}