using CMS.Controls;
using CMS.DataEngine;
using CMS.DocumentEngine;
using CMS.Helpers;
using CMS.PortalControls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class CMSWebParts_Pux_Media_ImageEngine : CMSAbstractWebPart
{
    /// <summary>
    /// Type rendered element (img, div, a) => string
    /// </summary>
    /// <value>img</value>
    public string Type
    {
        get
        {
            return ValidationHelper.GetString(GetValue("Type"), "img");
        }
        set
        {
            SetValue("Type", value);
        }
    }

    /// <summary>
    /// Enable lazy load => bool
    /// </summary>
    /// <value>false</value>
    public bool LazyLoad
    {
        get
        {
            return ValidationHelper.GetBoolean(GetValue("LazyLoad"), false);
        }
        set
        {
            SetValue("LazyLoad", value);
        }
    }

    /// <summary>
    /// Custom CSS class => string
    /// </summary>
    /// <value></value>
    public string Css
    {
        get
        {
            return ValidationHelper.GetString(GetValue("Css"), "");
        }
        set
        {
            SetValue("Css", value);
        }
    }

    /// <summary>
    /// Alt for image => string
    /// </summary>
    /// <value></value>
    public string Alt
    {
        get
        {
            return ValidationHelper.GetString(GetValue("Alt"), "");
        }
        set
        {
            SetValue("Alt", value);
        }
    }

    /// <summary>
    /// Src file for lazy load => string
    /// </summary>
    /// <value>data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==</value>
    public string SrcLazyLoad
    {
        get
        {
            return ValidationHelper.GetString(GetValue("SrcLazyLoad"), "/" + CurrentSiteName + "/media/system/img/blank.gif");//"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==");
        }
        set
        {
            SetValue("SrcLazyLoad", value);
        }
    }

    /// <summary>
    /// Image src from media library or file system => string
    /// </summary>
    /// <value></value>
    public string DataSrcLibrary
    {
        get
        {
            return ValidationHelper.GetString(GetValue("DataSrcLibrary"), "");
        }
        set
        {
            SetValue("DataSrcLibrary", value);
        }
    }

    /// <summary>
    /// Image src from file uplouad => Guid
    /// </summary>
    /// <value>Guid.Empty</value>
    public Guid DataSrcFile
    {
        get
        {
            return ValidationHelper.GetGuid(GetValue("DataSrcFile"), Guid.Empty);

        }
        set
        {
            SetValue("DataSrcFile", value);
        }
    }

    /// <summary>
    /// Image src if DataSrcLibrary and DataSrcFile is empty
    /// </summary>
    /// <value>"/"+CurrentSiteName+"/media/system/img/empty.png"</value>
    public string SrcEmpty
    {
        get
        {
            return ValidationHelper.GetString(GetValue("SrcEmpty"), "/"+CurrentSiteName+"/media/system/img/empty.png");
        }
        set
        {
            SetValue("SrcEmpty", value);
        }
    }

    /// <summary>
    /// Href attribute for type="a"
    /// </summary>
    /// <value></value>
    public string Href
    {
        get
        {
            return ValidationHelper.GetString(GetValue("Href"), "");
        }
        set
        {
            SetValue("Href", value);
        }
    }

    /// <summary>
    /// maxsidesize for image
    /// </summary>
    /// <value>0</value>
    public int Maxsidesize
    {
        get
        {
            return ValidationHelper.GetInteger(GetValue("Maxsidesize"), 0);
        }
        set
        {
            SetValue("Maxsidesize", value);
        }
    }

    /// <summary>
    /// width for image
    /// </summary>
    /// <value>0</value>
    public int Width
    {
        get
        {
            return ValidationHelper.GetInteger(GetValue("Width"), 0);
        }
        set
        {
            SetValue("Width", value);
        }
    }

    /// <summary>
    /// height for image
    /// </summary>
    /// <value>0</value>
    public int Height
    {
        get
        {
            return ValidationHelper.GetInteger(GetValue("Height"), 0);
        }
        set
        {
            SetValue("Height", value);
        }
    }

    protected void Page_PreRender(object sender, EventArgs e)
    {

        string imageFile = "";
        imageFile = TransformationHelper.HelperObject.GetFileUrl(DataSrcFile, null);
        string imageSrc = String.IsNullOrEmpty(DataSrcLibrary) ? (DataSrcFile == Guid.Empty) ? SrcEmpty : imageFile : DataSrcLibrary;
        imageSrc = imageSrc.Replace("~", "").Replace("?ext=.jpg", "").Replace("?ext=.png", "") + GetImageSize(Maxsidesize, Width, Height);


        if (LazyLoad && false)
        {
            Css += " b-lazy";
            if (Type == "img")
            {
                litImage.Text = "<img class=\"" + Css + "\" src=\"" + SrcLazyLoad + "\" data-src=\"" + imageSrc + "\" alt=\"" + HTMLHelper.EncodeForHtmlAttribute(Alt) + "\" >";
                litImageNoScript.Text = "<noscript><img src=\"" + imageSrc + "\" alt=\"" + HTMLHelper.EncodeForHtmlAttribute(Alt) + "\" /></noscript>";
            }
            else
            {
                if (Type == "a")
                {
                    litImage.Text = "<a href=\"" + Href + "\" class=\"" + Css + "\" data-src=\"" + imageSrc + "\" ></a>";
                    litImageNoScript.Text = "<noscript><a href=\"" + Href + "\" class=\"" + CssClass + "\" style=\"background:url('" + imageSrc + "');\"></a></noscript>";       
                }
                else
                {
                    litImage.Text = "<div class=\"" + Css + "\" data-src=\"" + imageSrc + "\" ></div>";
                    litImageNoScript.Text = "<noscript><div class=\"" + CssClass + "\" style=\"background:url('" + imageSrc + "');\"></div></noscript>";
                }
            }    
        }
        else
        {
            if (Type == "img")
            {
                litImage.Text = "<img class=\"" + Css + "\" src=\"" + imageSrc + "\" alt=\"" + HTMLHelper.EncodeForHtmlAttribute(Alt) + "\">";
            }
            else
            {
                if (Type == "a")
                {
                    litImage.Text = "<a href=\"" + Href + "\" class=\"" + Css + "\"  style=\"background:url('" + imageSrc + "');\" ></a>";   
                }
                else
                {
                    litImage.Text = "<div class=\"" + Css + "\" style=\"background:url('" + imageSrc + "');\"></div>";
                }
            }        
        }

    }

    public static string GetImageSize(int maxSideSize, int width, int height)
    {
        string imageSize = "";
        if (maxSideSize > 0)
        {
            imageSize = "?maxsidesize=" + maxSideSize;
        }
        else if (width > 0)
        {
            imageSize = "?width=" + width;
        }
        else if (height > 0)
        {
            imageSize = "?height=" + height;
        }
        return imageSize;
    }
}