#!C:\Python24\python.exe
# -*- coding: Latin-1 -*-

'''
$RCSfile: dsa_info.cgi,v $
$Revision$
$Author: markus $
$Date$
The deafult BioCASe provider software page
'''

import os, sys
# ***** include the biocase.lib directory in the python sys path for module importing *****
execfile( os.path.abspath(os.path.join(os.path.dirname( __file__ ), os.path.pardir, 'lib', 'biocase', 'adjustpath.py' ) ) )


#Import some stuff-----------------------------------------
import cgitb; cgitb.enable()
import string, cgi
#-----------------------------------------------------------------------------------------------------------
import biocase.tools.templating
import biocase.configuration


# get config data
cfg=biocase.configuration.Cfg()
form = cgi.FieldStorage()


#Transformaion of the metadata -----------------------------------------------------
#Get the physical path of the metadata.xml and the xsl to transform it.
here = _p.abspath( _p.dirname( _i.getfile( lambda:None ) ) ) 
#Transformaion of the metadata -----------------------------------------------------
xsl_path = os.path.join( cfg.xslLocator, 'ds_metadata.xsl')
xml_path = os.path.join( cfg.datasourcesLocator, form['dsa'].value, 'metadata.xml')


#Do the transformation of the biocase\configuration\pywrapper\metadata.xml file to HTML to present it
#If the necesary libraries are not installed then do not process the metadata and present a message inicating it.

if form.has_key('xml'):
    #Print the headers  
    print 'Content-Type: text/xml; charset=UTF-8'
    print # Blank line marking end of HTTP headers  
    try:
        import libxml2
        doc = libxml2.parseFile(xml_path)
        metadata = doc.serialize()
        doc.freeDoc()
    except ImportError:
        metadata = '<?xml version="1.0" encoding="UTF-8"?><response><error>There was an error parsing the metadata XML file. Check the file:' + xml_path + '</error></response>'
    
else:
    #Print the headers  
    print 'Content-Type: text/html; charset=UTF-8'
    print # Blank line marking end of HTTP headers  
    try:
        import libxml2
        import libxslt

        styledoc = libxml2.parseFile(xsl_path)
        style = libxslt.parseStylesheetDoc(styledoc)
        doc = libxml2.parseFile(xml_path)
        result = style.applyStylesheet(doc, { "dsa": ("'%s'")%(form['dsa'].value), "wrapper_url": "'%s?dsa=%s'"%(cfg.PyWrapperURL, form['dsa'].value)})
        metadata = style.saveResultToString(result) # get the metadata transformed
        style.freeStylesheet()
        doc.freeDoc()
        result.freeDoc()
    except ImportError:
        metadata = 'The metadata of this data source is not available, please check that you have the <strong>libxml2 library</strong> installed in your system and that you have set up your metadata files.'


print metadata