// Wiki
//
// Douglas Thrift
//
// $Id$

#include <cxx/standard.hh>

#include <api/files.hpp>
#include <api/pcre/regex.hpp>

#include "Wiki.hpp"

Wiki::Wiki(const cse::String &sitemap, const cse::String &base, ext::Queue<Url> &queue, api::ThreadMutex &queueLock, const _R<WikiCommand> &command) : CommandRunner(sitemap, queue, queueLock)
{
	api::Cout << _B("Wiki") << ios::NewLine;

	Entries(command->root, _S<ios::String>() << base << command->path);
}

void Wiki::Entries(const api::Path &directory, const cse::String &base)
{
	cse::String wiki(client.GetProperty(_B("GoogleTron:Wiki"), directory.GetPath()));
	
	if (wiki != _B("PmWiki"))
		throw ext::NotImplementedException(wiki);

	api::Path wikiDirectory(directory.GetChild(_B("wiki.d")));
	ext::RedBlackSet<cse::String> excludes(GetProperties<ext::RedBlackSet<cse::String> >(_B("GoogleTron:Exclude"), wikiDirectory.GetPath()));
	ext::RedBlackSet<cse::String> sections(GetProperties<ext::RedBlackSet<cse::String> >(_B("GoogleTron:Section"), wikiDirectory.GetPath()));
	api::Pcre::RegEx wikiEntry(_B("^([^a-z].*)\\.([^a-z].*)$"));

	_foreach (const _L<Subversion::Entry>, entry, client.GetEntries(wikiDirectory.GetPath()))
	{
		api::Pcre::RegEx::Match match;

		if (!entry->GetName().StartsWith('.') && !excludes.Contains(entry->GetName()) && (match = wikiEntry(entry->GetName())) && sections.Contains(match[1]))
			Entry(wikiDirectory.GetChild(entry->GetName()), base, *entry, match[1], match[2]);
	}
}

void Wiki::Entry(const api::Path &file, const cse::String &base, const Subversion::Entry &entry, const cse::String &section, const cse::String &page)
{
	std::time_t modified(entry.GetModified());

	try
	{
		_S<api::FileReader> reader(file.GetPath());
		ext::Buffer key, value;

		while (key = ios::ReadUntil(reader, '='), ios::ReadLine(reader, value))
			if (key == _B("time"))
			{
				modified = lexical_cast<std::time_t>(cse::String(value));

				break;
			}
	}
	catch (ext::EosException) {}

	Url url(_S<ios::String>() << base << section << _B("/") << page, modified, always, GetPriority(client.GetProperty(_B("GoogleTron:Priority"), file.GetPath())));

	_synchronized (queueLock)
		queue.Push(url);
}