using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using FinlyticCore.Dtos.TechnicalAnalysis;
using FinlyticCore.Dtos.Trading;

namespace FinlyticEngine.Database.Entities;

[Table("engine_trades")]
public class EngineTradeEntity
{
    [Key]
    public Guid Id { get; set; } = Guid.NewGuid();

    public Guid ProposalId { get; set; }

    /// <summary>
    /// Owner of this trade. Every read and every mutation is scoped to this value inside FinlyticEngine so a
    /// user can never see or modify another user's positions. The value originates exclusively from the JWT
    /// claim in FinlyticBackend and is never taken from a client-supplied payload.
    /// A single proposal is a system-wide opportunity: several users may each accept it, which produces one
    /// independent trade per user, all sharing the same <see cref="ProposalId"/>.
    /// </summary>
    [Required]
    public Guid UserId { get; set; }

    [Required]
    [MaxLength(20)]
    public string UnderlyingIsin { get; set; } = string.Empty;

    [MaxLength(30)]
    public string Symbol { get; set; } = string.Empty;

    [MaxLength(20)]
    public string? DerivativeIsin { get; set; }

    [MaxLength(20)]
    public string? DerivativeWkn { get; set; }

    public ExecutionMode ExecutionMode { get; set; } = ExecutionMode.ManualTradeRepublic;

    public InstrumentCategoryType InstrumentType { get; set; } = InstrumentCategoryType.Stock;

    public SignalDirection Direction { get; set; } = SignalDirection.Buy;

    public TradeStatus Status { get; set; } = TradeStatus.Proposed;

    [Column(TypeName = "decimal(18,4)")]
    public decimal AverageBuyIn { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal TotalQuantity { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal InitialStopLoss { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal CurrentStopLoss { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal CurrentPrice { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal TakeProfit1 { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal TakeProfit2 { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal? TakeProfitRunner { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal RealizedPnlEur { get; set; }

    [Column(TypeName = "decimal(18,4)")]
    public decimal TotalFeesEur { get; set; }

    public ExitPlan ExitPlan { get; set; } = null!;

    public string ScoreBreakdownJson { get; set; } = "{}";

    [Required]
    public DateTime OpenedAtUtc { get; set; } = DateTime.UtcNow;

    public DateTime? ClosedAtUtc { get; set; }

    [Required]
    public DateTime LastUpdatedAtUtc { get; set; } = DateTime.UtcNow;

    public List<EngineTradeFillEntity> Fills { get; set; } = new();
}