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/**************************************************************************
                                TODO
 **************************************************************************

 *************************************************************************/
#include <comphelper/processfactory.hxx>
#include <ucbhelper/contentidentifier.hxx>
#include "webdavprovider.hxx"
#include "webdavcontent.hxx"

#include "osl/mutex.hxx"

using namespace com::sun::star;
using namespace webdav_ucp;




// ContentProvider Implementation.




ContentProvider::ContentProvider(
                const uno::Reference< uno::XComponentContext >& rxContext )
: ::ucbhelper::ContentProviderImplHelper( rxContext ),
  m_xDAVSessionFactory( new DAVSessionFactory() ),
  m_pProps( 0 )
{
}


// virtual
ContentProvider::~ContentProvider()
{
    delete m_pProps;
}



// XInterface methods.

void SAL_CALL ContentProvider::acquire()
    throw()
{
    OWeakObject::acquire();
}

void SAL_CALL ContentProvider::release()
    throw()
{
    OWeakObject::release();
}

css::uno::Any SAL_CALL ContentProvider::queryInterface( const css::uno::Type & rType )
    throw( css::uno::RuntimeException, std::exception )
{
    css::uno::Any aRet = cppu::queryInterface( rType,
    (static_cast< lang::XTypeProvider* >(this)),
    (static_cast< lang::XServiceInfo* >(this)),
    (static_cast< ucb::XContentProvider* >(this))
                    );
    return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType );
}

// XTypeProvider methods.



XTYPEPROVIDER_IMPL_3( ContentProvider,
                      lang::XTypeProvider,
                      lang::XServiceInfo,
                      ucb::XContentProvider );



// XServiceInfo methods.



XSERVICEINFO_IMPL_1_CTX( ContentProvider,
                     OUString( "com.sun.star.comp.WebDAVContentProvider" ),
                     WEBDAV_CONTENT_PROVIDER_SERVICE_NAME );



// Service factory implementation.



ONE_INSTANCE_SERVICE_FACTORY_IMPL( ContentProvider );



// XContentProvider methods.



// virtual
uno::Reference< ucb::XContent > SAL_CALL
ContentProvider::queryContent(
            const uno::Reference<
                    ucb::XContentIdentifier >& Identifier )
    throw( ucb::IllegalIdentifierException,
           uno::RuntimeException, std::exception )
{
    // Check URL scheme...

    const OUString aScheme
        = Identifier->getContentProviderScheme().toAsciiLowerCase();
    if ( aScheme != HTTP_URL_SCHEME && aScheme != HTTPS_URL_SCHEME && aScheme != WEBDAV_URL_SCHEME
      && aScheme != DAV_URL_SCHEME && aScheme != DAVS_URL_SCHEME && aScheme != FTP_URL_SCHEME )
        throw ucb::IllegalIdentifierException();

    // Normalize URL and create new Id, if nessacary.
    OUString aURL = Identifier->getContentIdentifier();

    // At least: <scheme> + "://"
    if ( aURL.getLength() < ( aScheme.getLength() + 3 ) )
        throw ucb::IllegalIdentifierException();

    if ( aURL.copy( aScheme.getLength(), 3 ) != "://" )
        throw ucb::IllegalIdentifierException();

    uno::Reference< ucb::XContentIdentifier > xCanonicId;

    bool bNewId = false;
    if ( aScheme == WEBDAV_URL_SCHEME )
    {
        aURL = aURL.replaceAt( 0,
                               WEBDAV_URL_SCHEME_LENGTH,
                               OUString( HTTP_URL_SCHEME ) );
        bNewId = true;
    }
    else if ( aScheme == DAV_URL_SCHEME )
    {
        aURL = aURL.replaceAt( 0,
                               DAV_URL_SCHEME_LENGTH,
                               OUString( HTTP_URL_SCHEME ) );
        bNewId = true;
    }
    else if ( aScheme == DAVS_URL_SCHEME )
    {
        aURL = aURL.replaceAt( 0,
                               DAVS_URL_SCHEME_LENGTH,
                               OUString( HTTPS_URL_SCHEME ) );
        bNewId = true;
    }

    sal_Int32 nPos = aURL.lastIndexOf( '/' );
    if ( nPos != aURL.getLength() - 1 )
    {
        // Find second slash in URL.
        nPos = aURL.indexOf( '/', aURL.indexOf( '/' ) + 1 );
        if ( nPos == -1 )
            throw ucb::IllegalIdentifierException();

        nPos = aURL.indexOf( '/', nPos + 1 );
        if ( nPos == -1 )
        {
            aURL += "/";
            bNewId = true;
        }
    }

    if ( bNewId )
        xCanonicId = new ::ucbhelper::ContentIdentifier( aURL );
    else
        xCanonicId = Identifier;

    osl::MutexGuard aGuard( m_aMutex );

    // Check, if a content with given id already exists...
    uno::Reference< ucb::XContent > xContent
        = queryExistingContent( xCanonicId ).get();
    if ( xContent.is() )
        return xContent;

    // Create a new content.

    try
    {
        xContent = new ::webdav_ucp::Content(
                        m_xContext, this, xCanonicId, m_xDAVSessionFactory );
        registerNewContent( xContent );
    }
    catch ( ucb::ContentCreationException const & )
    {
        throw ucb::IllegalIdentifierException();
    }

    if ( !xContent->getIdentifier().is() )
        throw ucb::IllegalIdentifierException();

    return xContent;
}

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