/*
 * Berkeley DB XML .NET API
 * 
 * Copyright (C) 2007 Jana Business Consulting Ltd. All rights reserved.
 * 
 * For more information, see http://www.janabiz.com.
 * 
 */

using System;
using System.Collections;
using System.IO;
using JanaBiz.Db;
using JanaBiz.DbXml;
using JanaBiz.DbXml.Exceptions;

public class LoadContainer
{
    public static void Main(string[] args)
    {
        IDictionary options = parseArguments(args, "h:p:");

        string envdir = (string) options['h'];
        string filePath = (string) options['p'];
        if (envdir == null || filePath == null) {
            Usage();
        }

        DirectoryInfo fileDir = new DirectoryInfo(filePath);
        if (!fileDir.Exists) {
            Console.WriteLine("File path directory does not exist.");
            Usage();
        }

        DirectoryInfo nsDataDir = GetSubDirectory(fileDir, "nsData");
        DirectoryInfo simpleDataDir = GetSubDirectory(fileDir, "simpleData");


        DbEnvironment dbEnv = null;
        XmlManager mgr = null;

        try {
            // Open an environment
            dbEnv = CreateDbEnvironment(envdir);

            // Open an environment and manager
            using (mgr = CreateManager(dbEnv)) {
                LoadFiles(mgr, "namespaceExampleData.dbxml",
                          nsDataDir.GetFiles("*.xml"));
                LoadFiles(mgr, "simpleExampleData.dbxml",
                          simpleDataDir.GetFiles("*.xml"));
            }
        } catch (DbXmlException e) {
            Console.WriteLine("Error in exampleLoadContainer");
            Console.WriteLine(e.ToString());
        } finally {
            if (mgr != null) {
                mgr.Close();
            }
            if (dbEnv != null) {
                dbEnv.Close();
            }
        }
    }

    public static void LoadFiles(XmlManager mgr, string containerName, FileInfo[] files)
    {
        // Open a transactional container
        XmlContainerConfig containerconfig = new XmlContainerConfig();
        containerconfig.AllowCreate = true;
        containerconfig.Transactional = true;

        XmlContainer container = null;
        try {
            container = mgr.OpenContainer(null, containerName, containerconfig);

            // Create an update context
            using (XmlUpdateContext uc = mgr.CreateUpdateContext()) {
                // Start a transaction
                using (XmlTransaction txn = mgr.CreateTransaction()) {
                    XmlDocumentConfig docconfig = new XmlDocumentConfig();

                    foreach (FileInfo file in files) {
                        using (FileStream stream = file.OpenRead()) {
                            // Create a document
                            using (XmlDocument doc = mgr.CreateDocument()) {
                                doc.Name = file.Name;
                                doc.StreamContent = mgr.CreateInputStream(stream);

                                XmlMetaData metaData = new XmlMetaData("http://dbxmlExamples/timestamp",
                                                                       "timeStamp",
                                                                       new XmlValue(DateTime.Now.ToString()));
                                doc.SetMetaData(metaData);

                                container.PutDocument(txn, doc, uc, docconfig);
                                Console.WriteLine("Added " + file.Name + " to container " +
                                                  containerName);
                            }
                        }
                    }

                    // Commit the index adds
                    txn.Commit();
                }
            }
        } catch (DbXmlException e) {
            Console.WriteLine(e.ToString());
        } finally {
            if (container != null) {
                container.Close();
            }
        }
    }

    public static DirectoryInfo GetSubDirectory(DirectoryInfo fileDir, string subdir)
    {
        DirectoryInfo[] dirs = fileDir.GetDirectories(subdir);
        if (dirs.Length < 1) {
            Console.WriteLine(subdir + " subdirectory does not exist.");
            Usage();
        }
        return dirs[0];
    }

    public static DbEnvironment CreateDbEnvironment(string envdir)
    {
        DbEnvironmentConfig envconf = new DbEnvironmentConfig();
        envconf.CacheSize = 50*1024;
        envconf.AllowCreate = true;
        envconf.InitializeCache = true;
        envconf.Transactional = true;
        envconf.InitializeLocking = true;
        envconf.InitializeLogging = true;
        envconf.RunRecovery = true;
        envconf.ErrorWriter = Console.Out;
        envconf.ErrorPrefix = "LOG";

        DbEnvironment env = new DbEnvironment(envdir, envconf);

        return env;
    }

    public static XmlManager CreateManager(DbEnvironment env)
    {
        XmlManagerConfig mgrconfig = new XmlManagerConfig();
        mgrconfig.AdoptEnvironment = true;
        try {
            return new XmlManager(env, mgrconfig);
        } catch (Exception e) {
            env.Close();
            throw e;
        }
    }

    private static void Usage()
    {
        Console.WriteLine("This program loads the examples XML data into the examples container.");
        Console.WriteLine("Provide the directory where you want to place your database environment, ");
        Console.WriteLine("and the path to the xmlData directory (this exists in your DB XML examples");
        Console.WriteLine("directory).");
        Console.WriteLine();
        Console.WriteLine("\t-h <dbenv directory> -p <filepath>");
        Console.WriteLine("For example:");
        Console.WriteLine("\texampleLoadContainer.exe -h examplesEnvironment -p /home/user1/dbxml-1.1.0/examples/xmlData");

        Environment.Exit(-1);
    }

    private static IDictionary parseArguments(string[] args, string options)
    {
        IDictionary result = new Hashtable();
        for (int i = 0; i < args.Length; ++i) {
            string arg = args[i];
            if ((arg.StartsWith("-")
#if WIN32
                 || arg.StartsWith("/")
#endif
                ) && arg.Length > 1) {
                int index = options.IndexOf(arg[1]);
                if (index == -1) {
                    Console.WriteLine("Unknown option: " + arg);
                    Usage();
                    break;
                } else {
                    ++index;
                    if (index < options.Length && options[index] == ':') {
                        if (arg.Length > 2 && (arg[2] == '='
#if WIN32
                                               || arg[2] == ':'
#endif
                                              )) {
                            result[arg[1]] = arg.Substring(3);
                        } else if (arg.Length > 2) {
                            Console.WriteLine("Unknown option: " + arg);
                            Usage();
                        } else {
                            ++i;
                            if (i >= args.Length) {
                                Console.WriteLine("Invalid option: " + arg);
                                Usage();
                            }
                            result[arg[1]] = args[i];
                        }
                    } else {
                        result[arg[1]] = "true";
                    }
                }
            } else {
                Console.WriteLine("Too many arguments: " + arg);
                Usage();
            }
        }
        return result;
    }
}

CLOSE