using System;
using System.ComponentModel.DataAnnotations;
using System.Text.Json.Serialization;

namespace FinlyticFundamentals.Entities;

/// <summary>
/// Relational statement table linking historical Income Statements, Balance Sheets, and Cash Flow metrics.
/// </summary>
public class FinancialStatementEntity
{
    [Key]
    public Guid Id { get; set; } = Guid.NewGuid();

    [Required]
    public string Isin { get; set; } = string.Empty;

    [JsonIgnore]
    public AssetFundamentalsEntity? AssetFundamentals { get; set; }

    [Required]
    public string PeriodType { get; set; } = string.Empty; // "Annual" or "Quarterly"

    [Required]
    public DateTime EndDate { get; set; }

    // --- Income Statement Fields ---
    public decimal? TotalRevenue { get; set; }
    public decimal? CostOfRevenue { get; set; }
    public decimal? GrossProfit { get; set; }
    public decimal? OperatingExpenses { get; set; }
    public decimal? OperatingIncome { get; set; }
    public decimal? Ebitda { get; set; }
    public decimal? NetIncome { get; set; }
    public decimal? EpsBasic { get; set; }
    public decimal? EpsDiluted { get; set; }

    // --- Balance Sheet Fields ---
    public decimal? CashAndCashEquivalents { get; set; }
    public decimal? AccountsReceivable { get; set; }
    public decimal? Inventory { get; set; }
    public decimal? TotalCurrentAssets { get; set; }
    public decimal? TotalNonCurrentAssets { get; set; }
    public decimal? CurrentLiabilities { get; set; }
    public decimal? LongTermDebt { get; set; }
    public decimal? TotalLiabilities { get; set; }
    public decimal? TotalStockholdersEquity { get; set; }

    // --- Cash Flow Fields ---
    public decimal? OperatingCashFlow { get; set; }
    public decimal? InvestingCashFlow { get; set; }
    public decimal? CapitalExpenditures { get; set; }
    public decimal? FinancingCashFlow { get; set; }
    public decimal? FreeCashFlow { get; set; } // OperatingCashFlow - CapEx
}