203 lines
11 KiB
C#
203 lines
11 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.SqlClient;
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using System.Linq;
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namespace BLL
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{
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/// <summary>PDF 书籍视图模型。</summary>
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public class PdfBook
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{
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public string BookId { get; set; }
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public string Title { get; set; }
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public int ChapterCount { get; set; }
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public string Tag { get; set; }
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}
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/// <summary>PDF 章节（目录项）视图模型，支持多级目录（含父章节与层级）。</summary>
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public class PdfChapter
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{
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public string ChapterId { get; set; }
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public string BookId { get; set; }
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public string ParentChapterId { get; set; } // 上一级章节，NULL=顶级
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public int Level { get; set; } // 层级：1章 2节 3小节
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public string Title { get; set; }
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public int PageStart { get; set; }
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public int PageEnd { get; set; }
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public int SortNo { get; set; }
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}
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/// <summary>章节正文视图模型。</summary>
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public class PdfChapterDetail
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{
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public string ChapterId { get; set; }
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public string Title { get; set; }
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public int PageStart { get; set; }
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public int PageEnd { get; set; }
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public string Content { get; set; }
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}
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/// <summary>
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/// PDF 书籍目录/正文读取服务。
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/// 优先读取数据库表 Sys_PdfBook / Sys_PdfChapter；当库无数据或未建表时，回退到内置示例数据，便于界面预览。
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/// </summary>
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public static class PdfBookService
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{
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// —— 内置示例数据（仅用于 UI 预览）——
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private const string SampleBookId = "SAMPLE_SP_001";
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private static readonly List<PdfBook> _sampleBooks = new List<PdfBook>
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{
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new PdfBook { BookId = SampleBookId, Title = "《建筑施工安全防护（示例）》", Tag = "示例数据", ChapterCount = 15 }
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};
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// 多级目录示例（对应真实书籍：第一章 → 1.1 → 1.2.1）
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private static readonly List<PdfChapter> _sampleChapters = new List<PdfChapter>
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{
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Ch("CH01", "第一章 安全防护", 1, 1, 1, 1, null),
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Ch("CH011", "1.1 \u201c三宝\u201d\u201c四口\u201d\u201c五临边\u201d", 1, 1, 2, 2, "CH01"),
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Ch("CH012", "1.2 三宝", 1, 3, 3, 2, "CH01"),
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Ch("CH0121", "1.2.1 安全帽", 1, 1, 4, 3, "CH012"),
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Ch("CH0122", "1.2.2 安全带", 2, 2, 5, 3, "CH012"),
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Ch("CH0123", "1.2.3 安全网", 3, 3, 6, 3, "CH012"),
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Ch("CH013", "1.3 \u201c四口\u201d安全防护", 4, 6, 7, 2, "CH01"),
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Ch("CH0131", "1.3.1 电梯井竖向洞口防护", 4, 4, 8, 3, "CH013"),
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Ch("CH0132", "1.3.2 预留洞口安全防护", 5, 5, 9, 3, "CH013"),
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Ch("CH0133", "1.3.3 通道口安全防护", 6, 6, 10, 3, "CH013"),
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Ch("CH014", "1.4 \u201c五临边\u201d安全防护", 10, 12, 11, 2, "CH01"),
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Ch("CH0141", "1.4.1 临边作业", 10, 10, 12, 3, "CH014"),
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Ch("CH0142", "1.4.2 基坑临边防护", 10, 10, 13, 3, "CH014"),
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Ch("CH0143", "1.4.3 楼层临边防护", 11, 11, 14, 3, "CH014"),
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Ch("CH0144", "1.4.4 楼梯临边防护", 12, 12, 15, 3, "CH014")
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};
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private static readonly Dictionary<string, PdfChapterDetail> _sampleContents = new Dictionary<string, PdfChapterDetail>
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{
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{ "CH01", Detail("CH01", "第一章 安全防护", 1, 1, "本章为施工现场安全防护的总述，涵盖\u201c三宝\u201d\u201c四口\u201d\u201c五临边\u201d等基本防护要求。") },
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{ "CH011", Detail("CH011", "1.1 \u201c三宝\u201d\u201c四口\u201d\u201c五临边\u201d", 1, 1, "本节概述安全帽、安全带、安全网\u201c三宝\u201d，简称、预留洞口等\u201c四口\u201d以及临边等\u201c五临边\u201d的防护要点。") },
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{ "CH012", Detail("CH012", "1.2 三宝", 1, 3, "三宝指安全帽、安全带、安全网，是施工现场最基本的个人防护用品。") },
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{ "CH0121", Detail("CH0121", "1.2.1 安全帽", 1, 1, "进入施工现场必须正确佩戴安全帽，并系紧下颏带；安全帽应符合国家标准，不得使用破损或过期的安全帽。") },
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{ "CH0122", Detail("CH0122", "1.2.2 安全带", 2, 2, "高处作业应正确使用安全带，做到高挂低用，系挂在牢固可靠的结构上，严禁低挂高用。") },
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{ "CH0123", Detail("CH0123", "1.2.3 安全网", 3, 3, "作业面周围应按要求张挂安全平网或立网，安全网应绑扎牢固、无破损，严禁随意拆除。") },
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{ "CH013", Detail("CH013", "1.3 \u201c四口\u201d安全防护", 4, 6, "四口指楼梯口、电梯井口、预留洞口、通道口，均应设置可靠的防护设施。") },
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{ "CH0131", Detail("CH0131", "1.3.1 电梯井竖向洞口防护", 4, 4, "电梯井口应设置固定式防护门，井内每隔两层并不超过10m设置一道安全平网。") },
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{ "CH0132", Detail("CH0132", "1.3.2 预留洞口安全防护", 5, 5, "楼板、屋面等预留洞口应设置盖板或围挡防护，并设置警示标志。") },
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{ "CH0133", Detail("CH0133", "1.3.3 通道口安全防护", 6, 6, "通道口应搭设防护棚，并设置明显的安全警示标志和夜间警示灯。") },
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{ "CH014", Detail("CH014", "1.4 \u201c五临边\u201d安全防护", 10, 12, "五临边指基坑边、楼层边、屋面边、阳台边、楼梯边等临边作业场所，均应设置防护栏杆。") },
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{ "CH0141", Detail("CH0141", "1.4.1 临边作业", 10, 10, "临边作业应设置防护栏杆并挂设安全网，作业人员应正确佩戴和使用安全带。") },
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{ "CH0142", Detail("CH0142", "1.4.2 基坑临边防护", 10, 10, "基坑周边应设置高度不低于1.2m的防护栏杆，并设置警示与夜间警示灯。") },
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{ "CH0143", Detail("CH0143", "1.4.3 楼层临边防护", 11, 11, "楼层临边应设置防护栏杆和挡脚板，严防人员坠落和物件坠落伤人。") },
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{ "CH0144", Detail("CH0144", "1.4.4 楼梯临边防护", 12, 12, "楼梯临边、休息平台等部位应设置临时防护栏杆，随层随设。") }
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};
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private static PdfChapter Ch(string id, string title, int start, int end, int sort, int level, string parent)
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{
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return new PdfChapter
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{
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ChapterId = id, BookId = SampleBookId, Title = title,
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PageStart = start, PageEnd = end, SortNo = sort, Level = level, ParentChapterId = parent
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};
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}
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private static PdfChapterDetail Detail(string id, string title, int pageStart, int pageEnd, string content)
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{
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return new PdfChapterDetail { ChapterId = id, Title = title, PageStart = pageStart, PageEnd = pageEnd, Content = content };
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}
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/// <summary>获取书籍列表。</summary>
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public static List<PdfBook> GetBooks()
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{
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try
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{
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DataTable dt = SQLHelper.GetDataTableRunText(
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"SELECT BookId, Title FROM dbo.Sys_PdfBook ORDER BY CreateTime", new SqlParameter[] { });
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if (dt != null && dt.Rows.Count > 0)
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{
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var list = new List<PdfBook>();
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foreach (DataRow r in dt.Rows)
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list.Add(new PdfBook
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{
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BookId = r["BookId"] == null ? "" : r["BookId"].ToString(),
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Title = r["Title"] == null ? "" : r["Title"].ToString(),
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Tag = "数据库"
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});
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return list;
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}
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}
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catch (Exception)
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{
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// 未建表或查询失败，回退示例数据
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}
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return _sampleBooks;
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}
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/// <summary>获取某本书的章节（目录，含层级与父章节，供页面递归建树）。</summary>
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public static List<PdfChapter> GetChapters(string bookId)
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{
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if (bookId == SampleBookId)
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return _sampleChapters;
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try
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{
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DataTable dt = SQLHelper.GetDataTableRunText(
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"SELECT ChapterId, BookId, ParentChapterId, [Level], ChapterTitle, PageStart, PageEnd, SortNo " +
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"FROM dbo.Sys_PdfChapter WHERE BookId=@BookId ORDER BY SortNo",
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new[] { new SqlParameter("@BookId", bookId) });
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var list = new List<PdfChapter>();
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if (dt != null)
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foreach (DataRow r in dt.Rows)
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{
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var c = new PdfChapter
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{
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ChapterId = r["ChapterId"] == null ? "" : r["ChapterId"].ToString(),
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BookId = r["BookId"] == null ? "" : r["BookId"].ToString(),
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ParentChapterId = r["ParentChapterId"] == DBNull.Value ? null : r["ParentChapterId"].ToString(),
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Title = r["ChapterTitle"] == null ? "" : r["ChapterTitle"].ToString(),
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SortNo = r["SortNo"] == DBNull.Value ? 0 : Convert.ToInt32(r["SortNo"]),
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Level = r["Level"] == DBNull.Value ? 1 : Convert.ToInt32(r["Level"])
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};
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c.PageStart = r["PageStart"] == DBNull.Value ? 0 : Convert.ToInt32(r["PageStart"]);
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c.PageEnd = r["PageEnd"] == DBNull.Value ? 0 : Convert.ToInt32(r["PageEnd"]);
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list.Add(c);
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}
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return list;
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}
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catch (Exception)
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{
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return new List<PdfChapter>();
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}
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}
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/// <summary>获取章节正文。</summary>
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public static PdfChapterDetail GetChapterContent(string chapterId)
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{
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if (!string.IsNullOrWhiteSpace(chapterId) && chapterId.StartsWith("CH") && _sampleContents.ContainsKey(chapterId))
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return _sampleContents[chapterId];
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try
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{
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DataTable dt = SQLHelper.GetDataTableRunText(
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"SELECT ChapterId, ChapterTitle, PageStart, PageEnd, [Text] FROM dbo.Sys_PdfChapter WHERE ChapterId=@ChapterId",
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new[] { new SqlParameter("@ChapterId", chapterId) });
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if (dt != null && dt.Rows.Count > 0)
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{
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DataRow r = dt.Rows[0];
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return new PdfChapterDetail
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{
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ChapterId = r["ChapterId"] == null ? "" : r["ChapterId"].ToString(),
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Title = r["ChapterTitle"] == null ? "" : r["ChapterTitle"].ToString(),
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PageStart = r["PageStart"] == DBNull.Value ? 0 : Convert.ToInt32(r["PageStart"]),
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PageEnd = r["PageEnd"] == DBNull.Value ? 0 : Convert.ToInt32(r["PageEnd"]),
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Content = r["Text"] == DBNull.Value ? "" : r["Text"].ToString()
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};
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}
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}
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catch (Exception)
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{
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// 未建表或查询失败
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}
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return null;
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}
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}
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}
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