/*
 * This file is a part of Winix
 * and is not publicly distributed
 * 
 * Copyright (c) 2010, Tomasz Sowa
 * All rights reserved.
 * 
 */
 
#include "ln.h"
#include "core/misc.h"
#include "functions/functions.h"



namespace Fun
{

Ln::Ln()
{
	fun.url = L"ln";
}



bool Ln::HasAccess()
{
	return system->HasWriteAccess(*cur->request->dir_tab.back());
}


void Ln::CreateSymbolicLink(const std::wstring & link_to)
{
	item.Clear(); // setting the date to now
	item.type          = Item::symlink;
	item.parent_id     = cur->request->dir_tab.back()->id;
	item.url           = cur->request->PostVar(L"url");
	item.link_to       = link_to;
	item.link_redirect = cur->request->IsPostVar(L"makeredirect") ? 1 : 0;
	item.privileges    = 0644; // !! tymczasowo, bedzie uzyte umask
	functions->SetUser(item);
	functions->PrepareUrl(item);

	cur->request->status = db->AddItem(item);

	if( cur->request->status == WINIX_ERR_OK )
		log << log3 << "Ln: created a symbolic link to: " << link_to << logend;
}


void Ln::CreateHardLink(const std::wstring & link_to)
{
	int res = system->FollowAllLinks(cur->request->dir_tab, link_to, dir_tab, item, false, false);

	if( res == 0 )
	{
		log << log2 << "Ln: " << link_to << " is a directory (can't create a hard link)" << logend;
		cur->request->status = WINIX_ERR_PERMISSION_DENIED;
	}
	else
	if( res == 1 )
	{
		item.SetDateToNow();
		item.type          = Item::file;
		item.parent_id     = cur->request->dir_tab.back()->id;
		item.url           = cur->request->PostVar(L"url");
		item.privileges    = 0644; // !! tymczasowo, bedzie uzyte umask
		functions->SetUser(item);
		functions->PrepareUrl(item);
		cur->request->status = db->AddHardLink(item);

		if( cur->request->status == WINIX_ERR_OK )
			log << log3 << "Ln: created a hard link to: " << link_to << logend;
	}
	else
	if( res == 5 || res == 6 )
	{
		cur->request->status = WINIX_ERR_PERMISSION_DENIED;
	}
	else
	{
		cur->request->status = WINIX_ERR_NO_ITEM;
	}
}



// we do not use notifications for links
void Ln::MakePost()
{
	link_to = cur->request->PostVar(L"linkto");
	TrimWhite(link_to);

	if( link_to.empty() )
		return;

	int type = Toi(cur->request->PostVar(L"linktype"));

	if( type == 0 )
		CreateHardLink(link_to);
	else
		CreateSymbolicLink(link_to);

	if( cur->request->status == WINIX_ERR_OK )
		system->RedirectTo(item);
}



} // namespace