import tempfile

import os.path

import shutil

from django.core.exceptions import ObjectDoesNotExist

from ldt.utils import zipfileext

from django.conf import settings

from models import Content

import xml.dom.minidom

import xml.dom.ext #@UnresolvedImport

import xml.xpath #@UnresolvedImport

import fnmatch

import uuid

import urllib

class FileImportError(Exception):

    def __init__(self, value):

        self.value = value

    def __str__(self):

        return repr(self.value)

def Property(func):

    return property(**func()) 

class IriInfo(object):

    def __init__(self, id, order, titledesc, basepath="", videopath=settings.STREAM_URL, decoupage_blacklist = settings.DECOUPAGE_BLACKLIST, flatten = True):

        self.id = id

        self.basepath = basepath

        self.order = order

        self.src = ""

        self.annotations = None

        self.videopath = videopath

        self.videourl = ""

        self.title = None

        self.desc = None

        self.duration = None

        self.created = False

        self.content = None

        self.decoupage_blacklist = decoupage_blacklist

        if self.decoupage_blacklist is None:

            self.decoupage_blacklist = ()

        self.flatten = flatten

    def processIri(self):

        # for just import a file ldt and get the title for every media

        if 'http' in self.src:

            url = urllib.urlopen(self.src)

            doc = xml.dom.minidom.parse(url)

            doc = Ft.Xml.Domlette.ConvertDocument(doc)             

            con = xml.xpath.Context.Context(doc, 1, 1, None)

            #open .iri and get the title

            res = xml.xpath.Evaluate("/iri/head/meta[@name='title']/@content", context=con)

            self.title = res[0].value

        #for import a zip, get title and copy file .iri in the media directory

        else:

            path = os.path.join(self.basepath, self.src)

            doc = xml.dom.minidom.parse(path)

            con = xml.xpath.Context.Context(doc, 1, 1, None)

            res = xml.xpath.Evaluate("/iri/head/meta[@name='title']/@content", context=con)

            self.title = res[0].value

        res = xml.xpath.Evaluate("/iri/body/ensembles",context=con)

        ensemblesnode = res[0]

        ensembleids = []

        for node in ensemblesnode.childNodes:

            if node.nodeType == xml.dom.Node.ELEMENT_NODE and node.tagName == "ensemble":

                id = node.getAttributeNS("id",None)

                if id not in ensembleids:

                    ensembleids.append(id)

        if self.annotations is not None:

            newEnsemble = None

            for cnode in self.annotations.childNodes:

                if cnode.nodeType == xml.dom.Node.ELEMENT_NODE and cnode.tagName == "decoupage":

                    if newEnsemble is None:

                        newensemble = doc.createElement('ensemble')

                        ensembleid = self.id+"_"+str(uuid.uuid1())

                        newensemble.setAttributeNS(None,'id',ensembleid)

                        newensemble.setAttributeNS(None,'title', self.annotations.getAttribute('title'))

                        newensemble.setAttributeNS(None,'author', self.annotations.getAttribute('author'))

                        newensemble.setAttributeNS(None,'date', self.annotations.getAttribute('date'))

                        newensemble.setAttributeNS(None,'abstract', self.annotations.getAttribute('abstract'))

                        ensemblesnode.appendChild(newensemble)

                        ensembleids.append(ensembleid)

                    newDecoupageNode = cnode.cloneNode(True)

                    newensemble.appendChild(newDecoupageNode)

                elif cnode.nodeType == xml.dom.Node.ELEMENT_NODE and cnode.tagName == "ensemble":

                    ensembleid = cnode.getAttribute(u"id")

                    cloneNode = cnode.cloneNode(True)

                    if ensembleid in ensembleids:

                        ensembleid = self.id+"_"+str(uuid.uuid1())

                        cloneNode.setAttribute(u"id", ensembleid)

                    ensembleids.append(ensembleid)

                    ensemblesnode.appendChild(cloneNode)

        res = xml.xpath.Evaluate("/iri/body/medias/media[@id='video']/video", context=con)

        if self.flatten:

            src_video = res[0].getAttribute('src')

            self.videourl = os.path.basename(src_video)

            res[0].setAttributeNS(None,'src', self.videourl)

        self.duration = res[0].getAttributeNS(None, 'dur')

        f = open(path, "w")

        try:

            xml.dom.ext.Print(doc, stream=f)

        finally:

            f.close()

        destPath = os.path.join(os.path.join(os.path.join(settings.MEDIA_ROOT, "media"), "ldt"), self.id);

        if not os.path.exists(destPath):

            os.makedirs(destPath)

        shutil.move(os.path.join(self.basepath, self.src), os.path.join(destPath, os.path.basename(self.src)))

        self.src = self.id + u"/" + os.path.basename(self.src)

    def saveContent(self):

        #if 'http' in self.src:

        #    url = self.src

        #else:

        #    url = self.id + u"/" + os.path.basename(self.src)

        content, self.created = Content.objects.get_or_create(iri_id=self.id, defaults = {'iriurl': self.src, 'title':self.title, 'description':self.desc, 'videopath': self.videopath})

        if not self.created:

            content.iriurl = self.src

            content.title = self.title

            content.description = self.desc

            content.save()

        content.iriurl = self.src

        content.videopath = self.videopath.rstrip("/") + "/"

        content.iri = self.id + u"/" + os.path.basename(self.src)

        content.title = self.title

        content.description = self.desc

        content.duration = int(self.duration)

        content.save()

        self.content = content

    def process(self):

        self.processIri()

        self.saveContent()

class BaseFileImport(object):

    def __init__(self, filepath, videopath):

        self.__filepath = filepath

        self.__tempdir = ""

        self.__videopath = videopath

        self.__author = None

    def filepath(): #@NoSelf

        doc = """Docstring""" #@UnusedVariable

        def fget(self):

            return self.__filepath

        def fset(self, value):

            self.__filepath = value

        def fdel(self):

            del self.__filepath

        return locals()

    filepath = property(**filepath())

    def videopath(): #@NoSelf

        doc = """Docstring""" #@UnusedVariable

        def fget(self):

            return self.__videopath

        def fset(self, value):

            self.__videopath = value

        def fdel(self):

            del self.__videopath

        return locals()

    videopath = property(**videopath())

    def author(): #@NoSelf

        doc = """Docstring""" #@UnusedVariable

        def fget(self):

            return self.__author

        def fset(self, value):

            self.__author = value

        def fdel(self):

            del self.__author

        return locals()

    author = property(**author())

class FileImport(BaseFileImport):

    def __init__(self, filepath, videopath, flatten):

        BaseFileImport.__init__(self, filepath, videopath)

        self.__checkExistingMedia = False

        self.__flatten = flatten

    def checkExistingMedia(): #@NoSelf

        doc = """Docstring""" #@UnusedVariable

        def fget(self):

            return self.__checkExistingMedia

        def fset(self, value):

            self.__checkExistingMedia = value

        def fdel(self):

            del self.__checkExistingMedia

        return locals()

    checkExistingMedia = property(**checkExistingMedia())    

    def flatten(): #@NoSelf

        doc = """Docstring""" #@UnusedVariable

        def fget(self):

            return self.__flatten

        def fset(self, value):

            self.__flatten = value

        def fdel(self):

            del self.__flatten

        return locals()

    flatten = property(**flatten())

    def processLdt(self, ldtpath=None):

        # list iri

        # see if there is some comments

        # inject comment in iri

        # copy iri in folder

        # create or update content

        contents = {}

        if ldtpath:

            doc = xml.dom.minidom.parse(ldtpath)

        else:

            doc = xml.dom.minidom.parse(self.filepath)

        con = xml.xpath.Context.Context(doc, 1, 1, None)

        #get author from file ldt

        result = xml.xpath.Evaluate("/iri/project", context=con)

        for pnode in result:

            author = pnode.getAttributeNS("user",None)

            if author:

                self.author = unicode(author)

                break 

        result = xml.xpath.Evaluate("/iri/medias/media", context=con)

        for i, medianode in  enumerate(result):

        # get iri file's id from file ldt

            id = medianode.attributes['id'].value

            if self.checkExistingMedia:

                try:

                    Content.objects.get(iri_id=id)

                    do_pass = True

                except ObjectDoesNotExist: #Content.DoesNotExist

                    do_pass = False

            else:

                    do_pass = False

            if not do_pass:

                if not (contents.has_key(id)):

                    # Create instance iriInfo(id, order, titledesc, basepath="", videopath=settings.STREAM_URL)

                    if ldtpath:

                        contents[id] = IriInfo(id, i, "", os.path.dirname(ldtpath), flatten=self.flatten)

                    else: 

                        contents[id] = IriInfo(id, i, "", flatten=self.flatten)

                    # Get iri file's url from ldt. This url can be relative path or absolute path.

                contents[id].src = medianode.attributes['src'].value

                if medianode.attributes['video'].value !="":

                    contents[id].videopath = medianode.attributes['video'].value

                elif self.videopath !="" or self.videopath:

                    contents[id].videopath = self.videopath

                else:

                    contents[id].videopath =settings.STREAM_URL

        #get annotation of file ldt

        result = xml.xpath.Evaluate("/iri/annotations/content", context=con)

        for contentnode in result:

            id = contentnode.attributes['id'].value

            # pocketfilms.utils.log.debug("ID : " + str(id))

            if contents.has_key(id):

                if self.author:

                    contentnode.setAttributeNS(None,"author", unicode(self.author))

                contents[id].annotations = contentnode

        #go throught values

        for iriinfo in contents.values():

            iriinfo.process()

            # if yes update

            # if no create

            # move iri file to the proper place

            #return list of iriInfo

    def processFile(self):

        if self.filepath.name.endswith(".ldt"):

            self.processLdt()

        elif self.filepath.name.endswith(".zip"):

            self.processZip()

        else:

            raise FileImportError("Bad file type")

    def processZip(self):

    # """ extraire .zip, pass to method processLdt"""

        # create temp directory

        self.__tempdir = tempfile.mkdtemp()

        openfiles = []

        flvfiles = []

        processedids = []

        try:

            zipfile = zipfileext.ZipFileExt(self.filepath)

            zipfile.unzip_into_dir(self.__tempdir)

            #load ldt

            foldersToProcess = [self.__tempdir]

            while len(foldersToProcess):

                # pocketfilms.utils.log.debug("folder stack length : "+ str(len(foldersToProcess)))

                currentFolder = foldersToProcess.pop()

                for entry in os.listdir(currentFolder):

                    if entry in settings.ZIP_BLACKLIST:

                        continue

                    entryPath = os.path.join(currentFolder, entry)

                    if(os.path.isdir(entryPath)):

                        # pocketfilms.utils.log.debug("Push folder : " + entryPath)

                        foldersToProcess.append(entryPath)

                    elif fnmatch.fnmatch(entry, "*.ldt"):

                        # pocketfilms.utils.log.debug("Process file : " + entryPath)

                        ldtid = self.processLdt(entryPath)

                        processedids.append(ldtid)

                    elif fnmatch.fnmatch(entry, "*.flv"):

                        flvfiles.append(entryPath)

            if settings.CONTENT_ROOT and os.path.exists(settings.CONTENT_ROOT): 

                for entry in flvfiles:

                    shutil.copy(entry, settings.CONTENT_ROOT)

        finally:

            for f in openfiles:

                f.close()

            shutil.rmtree(self.__tempdir)

        # delete directory

        return processedids

    # def processFileLdt(self):

        # processedids = []

        # ldtid = self.processLdt(self.filepath)

        # processedids.append(ldtid)

        # return processedids