/// <summary>
/// Execute main logic for generating RSS-feeds.
/// </summary>
public override void Execute()
{
//this.context.Request.Initialize();
this.context.Request.ExtractAllVars();
var errorMessage = "";
// Check source
var source = this.context.Request["source"];
if (!NUL(source))
{
if (BLANK(source))
{
errorMessage += "Empty source!";
}
else
{
var doSource = new DOSource(this.context.Connection);
THashtable[] oSource =
{ new THashtable() };
if (!doSource.CheckSourceName(source, oSource))
{
errorMessage += CAT("Incorrect source '", source, "'!");
}
}
}
var anyFilter = false;
if (this.context.Request.Contains("code"))
{
if (EQ(this.context.Request["code"], Config.SECURITY_CODE))
{
anyFilter = true;
}
}
// Check filter
var filter = (String)null;
var filterName = (String)null;
var categoryName = (String)null;
var doCategory = new DOCategory(this.context.Connection);
var dsCategories = doCategory.EnumCategories();
if (dsCategories.GetSize() > 0)
{
filterName = this.context.Request["filter"];
if (!NUL(filterName))
{
if (BLANK(filterName))
{
if (errorMessage.Length > 0)
{
errorMessage += " ";
}
errorMessage += "Empty filter!";
}
else
{
THashtable[] oCategory =
{ new THashtable() };
if (doCategory.CheckFilterName(filterName, oCategory))
{
categoryName = STR(oCategory[0]["s_Name"]);
filter = STR(oCategory[0]["s_Filter"]);
}
else
{
if (anyFilter)
{
filter = filterName;
}
else
{
if (errorMessage.Length > 0)
{
errorMessage += " ";
}
errorMessage += CAT("Incorrect filter '", filterName, "'!");
}
}
}
}
}
// Check that parameters contain only 'source' or/and 'filter'
var keys = this.context.Request.GetKeys();
while (keys.MoveNext())
{
var key = (String)keys.GetCurrent();
if (EQ(key, "source") || EQ(key, "filter") || EQ(key, "code") || EQ(key, "count"))
{
//OK
}
else
{
//Not OK
if (errorMessage.Length > 0)
{
errorMessage += " ";
}
errorMessage += CAT("Incorrect parameter '", key, "'!");
}
}
if (errorMessage.Length > 0)
{
this.WriteErrorMessage(errorMessage);
return;
}
var fullTitle = false;
if (this.context.Request.Contains("title") && STR(this.context.Request["title"]) == "full")
{
fullTitle = true;
}
var count = Config.MAX_RSS_ITEMS;
var countSet = false;
if (this.context.Request.Contains("count"))
{
if (INT(this.context.Request["count"]) > 0)
{
count = INT(this.context.Request["count"]);
if (count < Config.MIN_RSS_ITEMS)
{
count = Config.MIN_RSS_ITEMS;
}
if (count > Config.MAX_RSS_ITEMS)
{
count = Config.MAX_RSS_ITEMS;
}
countSet = true;
}
}
// Get content from cache (if enabled and cache data exists)
var cachedFile = "";
if (Config.CACHE_RSS && !countSet)
{
cachedFile = Strings.Concat(
this.context.RssFolder, "/rss",
(BLANK(source) ? null : CAT("-s=", source)),
(BLANK(filterName) ? null : CAT("-f=", filterName)),
(fullTitle ? "-full" : null), ".xml");
if (Helper.FileExists(cachedFile))
{
this.context.Response.WriteHeader("Content-type", "text/xml; charset=UTF-8");
var tempContent = Helper.ReadAllText(cachedFile);
//this.context.Response.Write(tempContent.Substring(3)); //TODO -- BOM?
this.context.Response.Write(tempContent); //TODO -- BOM?
return;
}
}
var doItem = new DOItem(this.context.Connection);
// 0 - item url
// 1 - item title
// 2 - marketplace url
// 3 - marketplace name
// 4 - date
// 5 - description
// 6 - category
var pubDate = DateTimes.Format(DateTimes.XML_DTS);
var nowDate = DateTimes.Format(DateTimes.SQL_DTS);
var nowTime = DateTimes.GetTime(nowDate);
var fromDate = DateTimes.GmtFormat(DateTimes.SQL_DTS, nowTime - 6 * 60 * 60);
//String search = DOItem.BuildSqlByFilter(filter);
var search = DOItem.BuildSqlByCategory(categoryName);
var dsItems = doItem.EnumItemsFromSource(fromDate, source, search, count);
var current = 0;
var contentToCache = "";
if (dsItems.GetSize() == 0)
{
contentToCache = this.WriteStart(source, categoryName, pubDate);
}
for (int n = 0; n < dsItems.GetSize(); n++)
{
var oItem = dsItems.GetRow(n);
var date = STR(oItem["d_Date"]);
if (DateTimes.GetTime(date) > nowTime)
{
continue;
}
if (current == 0)
{
// Get puDate from the first item and write starting block
pubDate = DateTimes.Format(DateTimes.XML_DTS, DateTimes.GetTime(date));
contentToCache = this.WriteStart(source, categoryName, pubDate);
}
var category = this.context.Contains("Name_Category") ? STR(oItem["s_Category"]) : null;
var creator = this.context.Contains("Name_Creator") ? STR(oItem["s_Creator"]) : null;
String custom1 = this.context.Contains("Name_Custom1") ? STR(oItem["s_Custom1"]) : null;
String custom2 = this.context.Contains("Name_Custom2") ? STR(oItem["s_Custom2"]) : null;
var sourceName = STR(oItem["s_SourceName"]);
var description = STR(oItem["t_Description"]);
if (!BLANK(description))
{
description = Regex.Replace(description, "<br/>", " ", RegexOptions.IgnoreCase);
description = Regex.Replace(description, " ", " ");
description = Regex.Replace(description, "[ \r\n\t]+", " ");
if (description.Length > 512)
{
description = description.Substring(0, 511);
var lastSpaceIndex = description.LastIndexOf(" ");
description = Strings.Concat(description.Substring(0, lastSpaceIndex), " ...");
}
//Boolean utfIsValid = Mb_check_encoding(description, "UTF-8");
//if (utfIsValid == false)
// description = ""; //TODO
}
var itemTitle = CAT(
(fullTitle == true && !BLANK(custom2) ? CAT(custom2, " | ") : null),
Strings.RemoveTags(Strings.StripSlashes(STR(oItem["s_Title"]))),
(fullTitle == true ? CAT(" [", sourceName, "]") : null)
);
var link = (String)null;
if (this.context.ImmediateRedirect)
{
link = STR(oItem["s_Link"]);
}
else
{
var url = STR(oItem["s_Url"]);
var idField = doItem.GetIdField();
link = this.GetAbsoluteLink(Config.INDEX_PAGE, "?p=view_item&id=", "item/", oItem[idField]);
if (!BLANK(url))
{
link = this.AppendLink(link, "&title=", "/", url);
}
}
Object[] args = ARR(7);
args[0] = link;
args[1] = itemTitle;
args[2] = this.GetAbsoluteLink(Config.ACTION_PAGE, "?p=do_redirect_source&source=", "redirect/source/", sourceName);
args[3] = sourceName;
args[4] = DateTimes.Format(DateTimes.XML_DTS, DateTimes.GetTime(date));
var additional = (String)null;
if (!BLANK(creator))
{
if (additional != null)
{
additional = CAT(additional, "<br/>");
}
additional = CAT(additional, this.context["Name_Creator"], ": ", creator);
}
if (!BLANK(category))
{
if (additional != null)
{
additional = CAT(additional, "<br/>");
}
additional = CAT(additional, this.context["Name_Categories"], ": ", category);
}
if (!BLANK(custom2))
{
if (additional != null)
{
additional = CAT(additional, "<br/>");
}
additional = CAT(additional, this.context["Name_Custom2"], ": ", custom2);
}
if (!BLANK(custom1))
{
if (additional != null)
{
additional = CAT(additional, "<br/>");
}
additional = CAT(additional, this.context["Name_Custom1"], ": ", custom1);
}
var extendedDescription = (String)null;
if (!BLANK(description))
{
if (BLANK(additional))
{
extendedDescription = description;
}
else
{
extendedDescription = CAT(description, "<br/><br/>", additional);
}
}
else if (!BLANK(additional))
{
extendedDescription = additional;
}
args[5] = extendedDescription;
args[6] = category;
var itemContent = this.WriteItem(args);
if (!BLANK(itemContent))
{
contentToCache += itemContent;
}
current++;
}
var endContent = this.WriteEnd();
if (!BLANK(endContent))
{
contentToCache += endContent;
}
// Save content to cache (if applicable)
if (Config.CACHE_RSS && !countSet)
{
Helper.TestFileFolder(cachedFile);
//Helper.WriteText(cachedFile, Strings.Concat("\xEF\xBB\xBF", xmlContent));
Helper.WriteText(cachedFile, contentToCache);
}
this.context.Response.WriteHeader("Content-type", "text/xml; charset=UTF-8");
this.context.Response.Write(contentToCache); //TODO -- BOM?
}
