# hilfsfunktionen
import os.path
from types import *
import xml.dom.minidom
import zLOG

OSASObjectTypes=['OSAS_metaDataFile','OSAS_dir','Osas_file','OSAS_imageFolder','OSAS_dir_archive','OSAS_file_archive','OSAS_videoFolder','OSAS_videoFile','OSAS_videoFolder']
OSASDirObjects=['OSAS_dir','OSAS_imageFolder',]
OSASExcludedFiles=['TheVolumeSettingsFolder','TheFindByContentFolder']


def getText(nodelist):
    """gibt text aus nodelist"""
    rc = ""
    for node in nodelist:
        if node.nodeType == node.TEXT_NODE:
           rc = rc + node.data
    return rc

def getMetaInfoFromXML(path,xmlInfo):
    """get index.meta and translate it to HTML"""
    html=[]
    
    dom = xml.dom.minidom.parseString(xmlInfo)
    try:
        name=getText(dom.getElementsByTagName("name")[0].childNodes)
    except:
        name="NOT_DEFINED!!!"
    try:
        creator=getText(dom.getElementsByTagName("creator")[0].childNodes)
    except:
        creator="NOT_DEFINED!!!"

    try:
        creation_date=getText(dom.getElementsByTagName("archive-creation-date")[0].childNodes)
    except:
        creation_date="NOT_DEFINED!!!"

    try:
        description=getText(dom.getElementsByTagName("description")[0].childNodes)
    except:
        description="NOT_DEFINED!!!"

    try:
        type=getText(dom.getElementsByTagName("content-type")[0].childNodes) 
    except:
        type=""
    if type=="scanned document":
        html="<h3>Document: "+name+"</h3>"
    elif type=="folder":
        html="<h3>Folder: "+name+"</h3>"
    else:
        html="<h3>Document: "+name+"</h3>"

    html=html+"<p><i>created by: "+creator+" at: "+creation_date+"</i></p>" 
    html=html+"<h4>Description</h4><p>"+description+"</p>"
    try:
        bib = dom.getElementsByTagName("meta")[0].getElementsByTagName("bib")[0]
        if bib.attributes.has_key('type'):
            html=html+"<h4>Info ("+bib.attributes['type'].value+")</h4>"
        else:
            html=html+"<h4>Info</h4>"
        html=html+getBib(bib.childNodes)

    except:
        """none"""
       
#        html=html.encode('utf-8','replace')+getBib(bib.childNodes).encode('utf-8','replace')

    
    return html


def getBib(nodelist):
    """ translate bibliographical entries """
    rc= "<table border='0'>"
    
    for node in nodelist:
        
        if node.nodeType == node.ELEMENT_NODE:
           """nothing"""
           
           rc = rc+"<tr><td valign='right'>"+str(node.nodeName)+":</td><td> "+getText(node.childNodes)+"</td></tr>"
           
    #print rc
    return rc+"</table>"

def getPropertyOfDirs(indexMeta,propertyName):
    """gibt Eigenschaften der directorys gemaess Index.metas file in path aus
    @param indexMeta: index.meta file
    @param propertyName: Property die ausgegebenwerden soll
    @return: Hash mit key  name des Directories and Value von property, None if error.
    """
    ret={}
    
    try:
        dom=xml.dom.minidom.parseString(indexMeta)

        rootProp=xml.xpath.Evaluate("/resource/%s"%propertyName,dom)
        if len(rootProp)==1:
            property= getText(rootProp[0].childNodes)
            ret["."]=property
            
        for node in dom.getElementsByTagName("dir"):
            try:
                property= getText(node.getElementsByTagName(propertyName)[0].childNodes)
                dirName=getText(node.getElementsByTagName("name")[0].childNodes)
                ret[dirName]=property
            except:
                ret[dirName]=none
        return ret
    except:
                
        return ret

                   
def dirHasProperty(path,indexMeta,propertyName,propertyValue):
    """gibt 1 zurück falls path hat propertyName und properName=propertyValue
    @param propertyName:Property von path in index.meta des parent folders von path
    @param propertyValue:Wert der Property
    @param path: Pfad der getestet werden soll
    """
    if getPropertyOfDirs(indexMeta,propertyName).get(os.path.split(path)[1],None)==propertyValue:
        return 1
    else:
        return 0
    
def isImageFolder(path,indexMeta):
    """check if folder contains images without metadata or with metadata"""
    # metadaten ergeben imagefolder
    if dirHasProperty(path,indexMeta,'content-type','images'): 
        return 1
    
def isVideoFolder(path,indexMeta):
    """check if folder contains images without metadata or with metadata"""
    # metadaten ergeben imagefolder

    if dirHasProperty(path,indexMeta,'media-type','video'):
        return 1

def isVideoStream(path,indexMeta):
    if dirHasProperty(path,indexMeta,'container-format','quicktime'):
        return 1
    
def isImageFolderGuess(path):
    """check if folder contains images without metadata or with metadata"""
       #sonst rate ob folder images enthaelten durch test nach suffix
    try:
                dir=os.listdir(path)

                imagesuffixes=['.gif','.jpg','.jpeg','.png','.tiff','.tif']
                ret=""
                for a in dir:
                      
                      suffix=os.path.splitext(a)[1].lower()
                
                      if suffix in imagesuffixes:
                            return 1

                return 0

    except:
                return 0

def checkOSASFileType(object):
    """checke filetype
    nicht erkannte type auf werden auf none gesetzt
    """
    if os.path.split(object)[1][0]=="." or os.path.split(object)[1] in OSASExcludedFiles:
        return None
    elif isImageFolderGuess(object):
        return 'OSAS_imageFolder'
    elif os.path.split(object)[1]=="index.meta":
        return 'OSAS_metaDataFile'
    elif os.path.isdir(object):
        return 'OSAS_dir'
    elif os.path.isfile(object):
        return 'OSAS_file'
 
def toList(fields):
    """Einzelfeld in Liste umwandeln
    @param fields: String oder Array
    @return: gibt liste zurueck

    """
    if type(fields)==StringType:
        return [fields]
    else:
        return fields


def localDate():
        """gives formatted local date"""
        return strftime("%d.%m.%Y",localtime())