using FreeSql.DataAnnotations;

namespace F9WebAiTest.Domain.Entities.SYS.Reports;

/// <summary>
/// 报表模板文件（对齐 BBIT.F9.Domain.Entities.SYS.Reports.ReportFile）。
/// 报表模板作为独立实体与报表定义（Report）分离存储，Report 通过 ReportFileId 关联其模板实例。
/// .grf 本质是 UTF-8 JSON 文本，故以文本（DesignContent）保存。
/// </summary>
[Table(Name = "sys_report_files")]
public class ReportFile : BusinessEntity
{
    [Column(Name = "report_id")]
    public long ReportId { get; private set; }

    /// <summary>模板设计内容（.grf 的 JSON 文本）</summary>
    [Column(Name = "design_content", StringLength = -2)]
    public string DesignContent { get; private set; } = "";

    public ReportFile() { }

    public ReportFile(long id, long reportId, string designContent)
    {
        Id = id;
        ReportId = reportId;
        DesignContent = designContent ?? "";
        CreatedAt = DateTime.Now;
    }

    public void UpdateContent(string designContent)
    {
        DesignContent = designContent ?? "";
        UpdatedAt = DateTime.Now;
    }
}