using LCU.Library.Internal.MemberPreferencesApiModels.Entities;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

namespace LCU.Library.Internal.MemberPreferencesApiModels.Requests;

public class MemberOptinRequest : IValidatableObject
{
    [Required] public string UserId { get; set; }
    public string Email { get; set; }
    [Required] public string Value { get; set; }
    [Required] public string LegalReference { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var results = new List<ValidationResult>();

        if (!string.Equals(Value, DeliveryPreference.Electronic, StringComparison.InvariantCultureIgnoreCase) &&
            !string.Equals(Value, DeliveryPreference.Paper, StringComparison.InvariantCultureIgnoreCase))
        {
            results.Add(new ValidationResult(
                $"Invalid Option for Unified Opt-In Preference",
                new[] { "Value" }));
        }

        if (string.Equals(Value, DeliveryPreference.Electronic, StringComparison.InvariantCultureIgnoreCase))
        {
            if (string.IsNullOrWhiteSpace(Email))
            {
                results.Add(new ValidationResult("Email is required when Opting in", new[] { "Email" }));
            }
            else
            {
                try
                {
                    var unused = new System.Net.Mail.MailAddress(Email);
                }
                catch
                {
                    results.Add(new ValidationResult("Invalid Email Format", new[] { "Email" }));
                }
            }
        }

        return results;
    }

    public bool IsElectronicRequest()
    {
        return string.Equals(Value, DeliveryPreference.Electronic, StringComparison.InvariantCultureIgnoreCase);
    }

    public bool IsPaperRequest()
    {
        return string.Equals(Value, DeliveryPreference.Paper, StringComparison.InvariantCultureIgnoreCase);
    }
}