using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using OSGeo.MapGuide;
using System.Collections.Specialized;

/// <summary>
/// Shared 的摘要说明
/// </summary>
public class MapGuideShared
{
    /// <summary>
    /// 
    /// </summary>
    public MapGuideShared()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="res"></param>
    /// <param name="commands"></param>
    public static void ReleaseReader(MgPropertyCollection res, ref MgFeatureCommandCollection commands)
    {
        if (res == null)
            return;

        for (int i = 0; i < res.GetCount(); i++)
        {
            MgFeatureCommand cmd = commands.GetItem(i);
            if (cmd is MgInsertFeatures)
            {
                MgFeatureProperty resProp = (MgFeatureProperty)res.GetItem(i);
                if (resProp != null)
                {
                    MgFeatureReader reader = (MgFeatureReader)resProp.GetValue();
                    if (reader == null)
                        return;
                    reader.Close();
                }
            }
        }
    }
    /// <summary>
    /// 更改图层
    /// </summary>
    /// <param name="sCondition">条件</param>
    /// <param name="map">地图</param>
    /// <param name="gsLayer">图层</param>
    /// <param name="properties">修改属性集</param>
    /// <param name="resourceService">资源服务</param>
    /// <param name="featureService">要素服务</param>
    public static void UpdateLayer(string sCondition, MgMap map, MgLayer gsLayer, MgPropertyCollection properties,ref MgResourceService resourceService, ref MgFeatureService featureService)
    {
        if (sCondition != "")
        {
            MgResourceIdentifier layerFeatureResource = new MgResourceIdentifier(gsLayer.GetFeatureSourceId());
            MgFeatureCommandCollection blueMarkerCommands = new MgFeatureCommandCollection();
            SetResourceReadOnly(layerFeatureResource, resourceService);
            MgUpdateFeatures updateCommand = new MgUpdateFeatures(gsLayer.Name, properties, sCondition);
            blueMarkerCommands.Add(updateCommand);
            //execute blue marker command    
            if (blueMarkerCommands.GetCount() >= 1)
            {
                ReleaseReader(featureService.UpdateFeatures(layerFeatureResource, blueMarkerCommands, false), ref blueMarkerCommands);
            }
            gsLayer.SetVisible(true);
            gsLayer.ForceRefresh();
            map.Save(resourceService);
        }
    }
    /// <summary>
    /// 更改图层
    /// </summary>
    /// <param name="sCondition">条件</param>
    /// <param name="map">地图</param>
    /// <param name="nLayerIndex">图层序号</param>
    /// <param name="properties">修改属性集</param>
    /// <param name="resourceService">资源服务</param>
    /// <param name="featureService">要素服务</param>
    public static void UpdateLayer(string sCondition, MgMap map, int nLayerIndex, MgPropertyCollection properties, ref MgResourceService resourceService,ref  MgFeatureService featureService)
    {
        MgLayer gsLayer = map.GetLayers().GetItem(nLayerIndex) as MgLayer;
        UpdateLayer(sCondition, map, gsLayer, properties, ref resourceService, ref featureService);
    }
    /// <summary>
    /// 更改图层
    /// </summary>
    /// <param name="sCondition">条件</param>
    /// <param name="map">地图</param>
    /// <param name="sLayerName">图层名称</param>
    /// <param name="properties">修改属性集</param>
    /// <param name="resourceService">资源服务</param>
    /// <param name="featureService">要素服务</param>
    public static void UpdateLayer(string sCondition, MgMap map, string sLayerName, MgPropertyCollection properties, ref MgResourceService resourceService, ref MgFeatureService featureService)
    {
        MgLayer gsLayer = map.GetLayers().GetItem(sLayerName) as MgLayer;
        UpdateLayer(sCondition, map, gsLayer, properties, ref resourceService, ref featureService);
    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="map"></param>
    /// <param name="featureService"></param>
    /// <param name="resourceService"></param>
    /// <param name="page"></param>
    public static void OpenMap(ref MgMap map, ref MgFeatureService featureService, ref MgResourceService resourceService, Page page)
    {
        MgSiteConnection siteConnection = new MgSiteConnection();

        NameValueCollection requestParams = page.Request.HttpMethod == "GET" ? page.Request.QueryString : page.Request.Form;
        String mgSessionId = requestParams["SESSION"];
        String mgLocale = requestParams["LOCALE"];
        String mgMapName = requestParams["MAPNAME"];
        String configPath = page.Request.ServerVariables["APPL_PHYSICAL_PATH"] + "..\\webconfig.ini";

        MapGuideApi.MgInitializeWebTier(configPath);
        MgUserInformation userInfo = new MgUserInformation(mgSessionId);
        siteConnection.Open(userInfo);

        //创建资源服务
        resourceService = (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
        //创建要素服务
        featureService = (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);

        map.Open(resourceService, mgMapName);
    }
    /// <summary>
    /// 
    /// </summary>
    /// <param name="resoureId"></param>
    /// <param name="resourceService"></param>
    private static void SetResourceReadOnly(MgResourceIdentifier resoureId, MgResourceService resourceService)
    {
        String buffer;
        buffer = resourceService.GetResourceContent(resoureId).ToString();
        if (buffer.Contains("<Value>TRUE</Value>"))
        {
            buffer = buffer.Replace("<Value>TRUE</Value>", "<Value>FALSE</Value>");
            Byte[] buf_Byte = System.Text.Encoding.Default.GetBytes(buffer);
            MgByteSource byteSource = new MgByteSource(buf_Byte, buf_Byte.Length);
            resourceService.SetResource(resoureId, byteSource.GetReader(), null);
        }
    }
}