using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace FinlyticAssets.Entities;

public enum OptionType
{
    Long,
    Short
}

public class DerivativeEntity : AssetEntity
{
    // --- Verknüpfung zum Basiswert (Underlying) ---
    [StringLength(12, MinimumLength = 12)]
    public string? UnderlyingIsin { get; set; }

    // --- Derivat-Spezifikationen ---
    public OptionType OptionType { get; set; } // Long / Short

    [MaxLength(100)]
    public string ProductCategoryName { get; set; } = string.Empty; // Z.B. "Best Turbo"

    [MaxLength(100)]
    public string NextGenProductCategoryName { get; set; } = string.Empty; // Z.B. "Turbo"

    // --- Kennzahlen (Präzise decimals für Finanzwerte) ---
    [Column(TypeName = "numeric(18,6)")]
    public decimal Strike { get; set; } // Basispreis

    [Column(TypeName = "numeric(18,6)")]
    public decimal Barrier { get; set; } // Knock-Out-Schwelle

    [Column(TypeName = "numeric(10,4)")]
    public decimal Leverage { get; set; } // Hebel (z. B. 1.01)

    public decimal? Size { get; set; }

    public decimal? Factor { get; set; }

    public decimal? Delta { get; set; }

    [MaxLength(10)]
    public string Currency { get; set; } = "EUR";

    public DateTime? Expiry { get; set; } // Verfallsdatum (null bei Open-End / Best Turbo)

    // --- Emittent (Issuer) Daten ---
    [MaxLength(150)]
    public string Issuer { get; set; } = string.Empty; // Z.B. "Société Générale"

    [MaxLength(150)]
    public string IssuerDisplayName { get; set; } = string.Empty;

    public string? IssuerImageId { get; set; }

    // PostgreSQL Mapped Array für TR-Kategorien
    public List<string> DerivativeProductCategories { get; set; } = new();
}