using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BLL
{
    public static class PhotoService
    {
        /// <summary>
        /// 根据主键返回一个照片信息
        /// </summary>
        /// <param name="cnProfessionalCode">文件编号</param>
        /// <returns></returns>
        public static Model.DataBase_Photo GetPhotoById(string photoId)
        {
            return Funs.DB.DataBase_Photo.FirstOrDefault(x => x.PhotoId == photoId);
        }

        /// <summary>
        /// 添加照片
        /// </summary>
        /// <param name="Installation"></param>
        public static void AddPhoto(Model.DataBase_Photo photo)
        {
            Model.DataBase_Photo newPhoto = new Model.DataBase_Photo();

            newPhoto.PhotoId = photo.PhotoId;
            newPhoto.ProjectId = photo.ProjectId;
            newPhoto.PhotoType = photo.PhotoType;
            newPhoto.Date = photo.Date;
            newPhoto.Place = photo.Place;
            newPhoto.Person = photo.Person;
            newPhoto.Subject = photo.Subject;
            newPhoto.Background = photo.Background;
            newPhoto.Photographer = photo.Photographer;
            newPhoto.AttachUrl = photo.AttachUrl;

            Funs.DB.DataBase_Photo.InsertOnSubmit(newPhoto);
            Funs.DB.SubmitChanges();
        }

        /// <summary>
        /// 修改照片
        /// </summary>
        /// <param name="photo"></param>
        public static void UpdatePhoto(Model.DataBase_Photo photo)
        {
            Model.DataBase_Photo newPhoto = Funs.DB.DataBase_Photo.FirstOrDefault(e => e.PhotoId == photo.PhotoId);
            if (newPhoto != null)
            {
                newPhoto.Date = photo.Date;
                newPhoto.Place = photo.Place;
                newPhoto.Person = photo.Person;
                newPhoto.Subject = photo.Subject;
                newPhoto.Background = photo.Background;
                newPhoto.Photographer = photo.Photographer;
                newPhoto.AttachUrl = photo.AttachUrl;
                Funs.DB.SubmitChanges();
            }
        }

        /// <summary>
        /// 根据一个照片信息
        /// </summary>
        /// <param name="breakdownCode"></param>
        public static void DeletePhotoById(string photoId)
        {
            Model.DataBase_Photo photo = Funs.DB.DataBase_Photo.FirstOrDefault(e => e.PhotoId == photoId);
            if (photo != null)
            {
                if (!string.IsNullOrEmpty(photo.AttachUrl))
                {
                    BLL.UploadAttachmentService.DeleteFile(Funs.RootPath, photo.AttachUrl);//删除附件
                }
                Funs.DB.DataBase_Photo.DeleteOnSubmit(photo);
                Funs.DB.SubmitChanges();
            }
        }
    }
}