using ExportMap.db;
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using ExportMap.Models;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Web;
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namespace ExportMap.cs
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{
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public class XYZUtils
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{
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private static string pyFile;
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/// <summary>
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/// 获取Python文件
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/// </summary>
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public static string PyFile
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{
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get
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{
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if (string.IsNullOrWhiteSpace(pyFile))
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{
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pyFile = Path.Combine(ExportUtil.SourcesPath, "xyz.py");
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}
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return pyFile;
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}
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}
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/// <summary>
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/// QGIS工程
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/// </summary>
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public static string Qgz
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{
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get
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{
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//return Path.Combine(ExportUtil.SourcesPath, "xyz.qgz");
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return "xyz.qgz";
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}
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}
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/// <summary>
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/// 获取发布地址
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/// </summary>
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public static string GetReleaseUrl(string dircode)
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{
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return "http://{host}/LFData/2d/tiles/" + dircode + "/{z}/{x}/{y}.png";
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}
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/// <summary>
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/// 生成
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/// </summary>
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/// <param name="args">XYZ参数</param>
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/// <param name="err">错误信息</param>
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/// <returns>数据发布ID</returns>
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public static int Generate(XYZArgs args, ref string err)
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{
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List<SysMeta> list = selectMetas(args.ids, "and type in ('tif', 'tiff', 'img')");
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if (null == list || list.Count == 0) return 0;
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string tifFile = Path.Combine(Tool.TempDir, ExportUtil.DateStr + ".txt");
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string xyzPath = Path.Combine(SGUtils.LFData, "2d\\tiles", args.dircode);
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if (!Directory.Exists(xyzPath)) Directory.CreateDirectory(xyzPath);
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WriteText(tifFile, list);
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string cmd = string.Format("python \"{0}\" -qgz {1} -file \"{2}\" -out \"{3}\" -min {4} -max {5}", PyFile, Qgz, tifFile, xyzPath, args.min, args.max);
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//string pyText = File.ReadAllText(PyFile);
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//pyText = pyText
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// .Replace(@"E:\terrait\TianJin\ExportMap\ExportMap\Sources\xyz.qgz", Qgz)
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// .Replace(@"D:\xyz\zy.txt", tifFile)
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// .Replace(@"D:\xyz\tiles\zy", xyzPath)
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// .Replace("=12,", "=" + args.min + ",")
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// .Replace("=15,", "=" + args.max + ",");
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//string newPy = tifFile.Replace(".txt", ".py").Replace("\\", "\\\\");
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//File.WriteAllText(newPy, pyText);
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//string cmd = string.Format("exec(open('{0}', 'r', encoding='utf-8').read()) & exit()", newPy);
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err = ExecCmd(cmd);
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if (File.Exists(tifFile)) File.Delete(tifFile);
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string viewFile = Path.Combine(xyzPath, "view.html");
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if (File.Exists(viewFile))
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{
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string path = "2d\\tiles" + "\\" + args.dircode;
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InsertToDB(list, args, path);
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return 1;
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}
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return 0;
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}
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/// <summary>
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/// 查询元数据
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/// </summary>
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public static List<SysMeta> selectMetas(List<int> ids, string types = "")
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{
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string sql = string.Format("select * from lf.sys_meta where id in ({0}) {1} order by id", string.Join(",", ids), types);
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DataTable dt = Tool.DBHelper.GetDataTable(sql);
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List<SysMeta> list = ModelHandler.FillModel<SysMeta>(dt);
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return list;
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}
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/// <summary>
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/// 写文本文件
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/// </summary>
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private static void WriteText(string file, List<SysMeta> list)
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{
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string uploadFolder = Tool.GetSetting("uploadFolder");
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List<string> files = new List<string>();
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foreach (SysMeta meta in list)
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{
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string filePath = Path.Combine(uploadFolder, meta.path);
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if (File.Exists(filePath)) files.Add(filePath);
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}
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string str = string.Join("\n", files);
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File.WriteAllText(file, str);
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}
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/// <summary>
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/// 执行CMD
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/// </summary>
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/// <param name="cmd">命令行</param>
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/// <returns>执行结果或出错信息</returns>
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public static String ExecCmd(string cmd)
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{
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string str = null;
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try
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{
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Process p = new Process();
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p.StartInfo.FileName = "cmd.exe";
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p.StartInfo.UseShellExecute = false;
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p.StartInfo.CreateNoWindow = true;
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p.StartInfo.RedirectStandardInput = true;
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p.StartInfo.RedirectStandardOutput = true;
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p.StartInfo.RedirectStandardError = true;
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p.Start();
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StreamWriter si = p.StandardInput; // 标准输入流
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StreamReader so = p.StandardOutput; // 标准输出流
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StreamReader se = p.StandardError; // 标准错误流
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LogOut.Info("cmd = " + cmd);
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si.AutoFlush = true;
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si.WriteLine("cd \"C:\\Program Files\\QGIS 3.16\\apps\\Python37\"");
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si.WriteLine("\"C:\\Program Files\\QGIS 3.16\\bin\\qgis_process-qgis-ltr.bat\"");
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//si.WriteLine("\"C:\\Program Files\\QGIS 3.16\\bin\\python-qgis-ltr.bat\"");
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//si.WriteLine("exit()");
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si.WriteLine(cmd);
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si.WriteLine("exit");
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string info = so.ReadToEnd();
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str = se.ReadToEnd();
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if (!string.IsNullOrEmpty(info)) LogOut.Debug(info);
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if (!string.IsNullOrEmpty(str)) LogOut.Error(str);
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if (p.HasExited == false) p.Kill();
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se.Close();
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so.Close();
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si.Close();
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p.Close();
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}
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catch (Exception ex)
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{
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LogOut.Error(ex.StackTrace);
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str = ex.Message;
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}
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return str;
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}
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/// <summary>
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/// 插入数据库
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/// </summary>
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private static void InsertToDB(List<SysMeta> metas, XYZArgs args, string path)
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{
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if (PubDBHelper.IsPublish(args.dircode)) return;
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SysPublish sys = NewPublish(metas[0], args);
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sys.path = path;
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int pubid = PubDBHelper.InsertPublish(sys);
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if (pubid > 0)
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{
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PubDBHelper.InsertLayer(sys, new SysMeta()
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{
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name = args.name,
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type = metas[0].type
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});
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foreach (SysMeta meta in metas)
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{
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PubDBHelper.InsertMetaPub(meta.id, pubid, args.userId);
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}
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}
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}
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/// <summary>
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/// 创建数据发布类
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/// </summary>
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private static SysPublish NewPublish(SysMeta meta, XYZArgs args)
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{
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SysPublish sp = new SysPublish();
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sp.name = args.name;
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sp.url = GetReleaseUrl(args.dircode);
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sp.type = "DOM";
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sp.status = 3;
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sp.dirid = args.dircode;
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sp.depid = args.depcode;
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sp.min = args.min;
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sp.max = args.max;
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sp.json = null;
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sp.create_user = args.userId;
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sp.geom = GetPointZ(args);
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sp.bak = null;
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return sp;
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}
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/// <summary>
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/// 获取中心点
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/// </summary>
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private static string GetPointZ(XYZArgs args)
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{
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string viewFile = Path.Combine(SGUtils.LFData, "2d\\tiles", args.dircode, "view.html");
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if (!File.Exists(viewFile)) return null;
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string str = File.ReadAllText(viewFile);
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int start = str.IndexOf(".setView([") + ".setView([".Length;
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int end = str.IndexOf(");", start);
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string coords = str.Substring(start, end - start).Replace("]", "").Replace(" ", "");
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string[] strs = coords.Split(new char[] { ',' });
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return string.Format("ST_GeomFromText('POINT Z ({0} {1} {2})')", strs[0], strs[1], strs[2]);
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}
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}
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}
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