using System;
using System.Collections.Generic;
using System.Linq;

namespace BLL
{
    /// <summary>
    /// 危大、超危工程清单服务
    /// </summary>
    public static class HazardProjectService
    {
        /// <summary>
        /// 获取危大、超危工程清单列表
        /// </summary>
        /// <returns></returns>
        public static List<Model.HSSE_HazardProject> GetList(string projectId)
        {
            return Funs.DB.HSSE_HazardProject.Where(x => x.ProjectId == projectId).ToList();
        }

        /// <summary>
        /// 根据主键获取危大、超危工程
        /// </summary>
        /// <param name="hazardProjectId">主键</param>
        /// <returns></returns>
        public static Model.HSSE_HazardProject GetById(string hazardProjectId)
        {
            return Funs.DB.HSSE_HazardProject.FirstOrDefault(x => x.HazardProjectId == hazardProjectId);
        }

        /// <summary>
        /// 新增危大、超危工程
        /// </summary>
        /// <param name="item">实体</param>
        public static void Add(Model.HSSE_HazardProject item)
        {
            Model.SGGLDB db = Funs.DB;
            Model.HSSE_HazardProject newItem = new Model.HSSE_HazardProject
            {
                HazardProjectId = item.HazardProjectId,
                ProjectId = item.ProjectId,
                ProjectCode = item.ProjectCode,
                ProjectName = item.ProjectName,
                WorkContent = item.WorkContent,
                RiskLevel = item.RiskLevel,
                StartDate = item.StartDate,
                EndDate = item.EndDate,
                ManagerMan = item.ManagerMan,
                Remark = item.Remark
            };
            db.HSSE_HazardProject.InsertOnSubmit(newItem);
            db.SubmitChanges();
        }

        /// <summary>
        /// 更新危大、超危工程
        /// </summary>
        /// <param name="item">实体</param>
        public static void Update(Model.HSSE_HazardProject item)
        {
            Model.SGGLDB db = Funs.DB;
            Model.HSSE_HazardProject newItem = db.HSSE_HazardProject.FirstOrDefault(x => x.HazardProjectId == item.HazardProjectId);
            if (newItem != null)
            {
                newItem.ProjectCode = item.ProjectCode;
                newItem.ProjectName = item.ProjectName;
                newItem.WorkContent = item.WorkContent;
                newItem.RiskLevel = item.RiskLevel;
                newItem.StartDate = item.StartDate;
                newItem.EndDate = item.EndDate;
                newItem.ManagerMan = item.ManagerMan;
                newItem.Remark = item.Remark;
                db.SubmitChanges();
            }
            else
            {
                Add(item);
            }
        }

        /// <summary>
        /// 删除危大、超危工程
        /// </summary>
        /// <param name="hazardProjectId">主键</param>
        public static void Delete(string hazardProjectId)
        {
            Model.SGGLDB db = Funs.DB;
            Model.HSSE_HazardProject item = db.HSSE_HazardProject.FirstOrDefault(x => x.HazardProjectId == hazardProjectId);
            if (item != null)
            {
                db.HSSE_HazardProject.DeleteOnSubmit(item);
                db.SubmitChanges();
            }
        }

        /// <summary>
        /// 自动生成工程编号（HD-XXX，取现有最大序号加1）
        /// </summary>
        /// <returns></returns>
        public static string GetNewCode()
        {
            int max = 0;
            foreach (Model.HSSE_HazardProject item in Funs.DB.HSSE_HazardProject.ToList())
            {
                string code = item.ProjectCode;
                if (!string.IsNullOrEmpty(code) && code.StartsWith("HD-"))
                {
                    int num = 0;
                    if (int.TryParse(code.Substring(3), out num) && num > max)
                    {
                        max = num;
                    }
                }
            }
            return string.Format("HD-{0:D3}", max + 1);
        }
    }
}