namespace ortund.Data
{
    // Entity eliminates a lot of repetition by providing common property
    // values through inheritance.
    public class Entity
    {
        public int Id { get; set; }
        public Company Company { get; set; }
    }

    // Each Company represents an organisation that will be using the system
    // which employs this data model
    public class Company
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

    // Each User represents an employee of the Company to which it belongs
    // who is authorized to use the system which employs this data model
    public class User : Entity
    {
        public string EmailAddress { get; set; }
        public string Password { get; set; }
    }

    // Every record in each of the following tables belongs to a company
    // which represents a customer using the system.

    // A Complex represents a location developed for high density housing
    // that contains multiple apartments
    public class Complex : Entity
    {
        public string Name { get; set; }
        public Address Address { get; set; }
        public Policy Policy { get; set; }
    }

    // An Apartment record represents housing inside a Complex
    public class Apartment : Entity
    {
        public Complex Complex { get; set; }
        public string Number { get; set; }
        public Owner Owner { get; set; }
        public Tenant Tenant { get; set; }
    }

    // An Owner record represents the owner of the apartment
    public class Owner : Entity
    {
        public Apartment Apartment { get; set; }
        public string AccountNumber { get; set; }
    }

    // A Tenant record represents the person who currently resides in
    // the apartment
    public class Tenant : Entity
    {
        public Apartment Apartment { get; set; }
        public string AccountNumber { get; set; }
    }

    // An Address represents the physical location of a Complex
    public class Address
    {
        public string[] Lines { get; set; }
        public string Street { get; set; }
        public string City { get; set; }
        public string ZipCode { get; set; }
    }

    // A Policy represents the Insurance Policy under which all repairs
    // are effected
    public class Policy : Entity
    {
        public Insurer Insurer { get; set; }
        public string Number { get; set; }
    }

    // An Insurer represents the Insurance company who provisioned the
    // insurance policy
    public class Insurer : Entity
    {
        public string Name { get; set; }
    }

    // Liaisons and LiaisonTypes don't exist under any particular company
    // so select of these entities won't be limited to the company doing
    // the selection.

    // Not sure if this is ideal or absolutely to be avoided

    // Liaisons represent the people who the Company can contact for any
    // matter relating to the relevant LiaisonType (complex, owner, insurer, etc)
    public class Liaison : Entity
    {
        public string Name{ get; set; }
        public string Phone { get; set; }
        public string EmailAddress { get; set; }
        public LiaisonType Type { get; set; } // required
        public int TypeLink { get; set; } // required
        public LiaisonType SubType { get; set; }
        public int SubTypeLink { get; set; }

        // A Type refers to any other object in the data model(complex, insurer, etc)
        // TypeLink refers to the PK value of the particular object record to which
        // this liaison belongs.

        // This allows for multiple Liaisons per <entity>
    }

    // LiaisonType provides an updateable list of object types to be used in linking
    // a Liaison to whatever other object in the data model it should be linked to.
    public LiaisonType : Entity
    {
        public string Name { get; set; } // valid values are Complex, Insurer, etc
    }
}