using System.ComponentModel.DataAnnotations;

namespace Assignment3.Models
{
    public class Organization :IValidatableObject
    {
        [Key]
        public Guid Id { get; private set; } = Guid.NewGuid(); 

        [Required]
        public DateTimeOffset CreationTime { get; private set; } = DateTimeOffset.UtcNow;

        [Required]
        [MaxLength(256)]
        public string Name { get; set; }

        [Required]
        public String Type { get; set; }

        [Required]
        public string Address { get; set; } 

        // need to add error handling for Guid and possible Creation Time
        // Can we have it so it just write over user input for creation time to current time?
        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
        {
            // Custom Validation: Type must be one of the allowed values
            string[] validTypes = { "Hospital", "Clinic", "Pharmacy" };

            if (!Array.Exists(validTypes, t => t.Equals(Type, StringComparison.OrdinalIgnoreCase)))
            {
                yield return new ValidationResult("The Organization Type must be one of the following values: Hospital, Clinic, Pharmacy.", new[] { "Type" });
            }
        }

    }
}