import re
import urlparse
import xmlrpclib
from lxml import etree
from PyQt4.QtXml import QDomDocument
from sface.sfiprocess import SfiProcess
from sface.sfidata import SfiData

from PyQt4.QtCore import *
from PyQt4.QtGui import *

class ClientSliceManager(QDialog):
    def __init__(self, parent):
        QDialog.__init__(self, parent=parent)
        self.process = SfiProcess(self)

        self.browserMessages = QTextBrowser()

        self.layout = QVBoxLayout()
        self.layout.addWidget(self.browserMessages)
        self.setLayout(self.layout)

    def setStatus(self, x):
        self.browserMessages.append(x)

    # ProtoGENI-compatible submit. Contact each aggregate individually rather
    # than using the slice manager.
    # This code will be removed when ProtoGENI slicemanager is patched.
    def submit_pg_compat(self, rspec):
        # Several aggregates have issues with the <statistics> section in the
        # rspec, so make sure it's not there.
        stats_elems = rspec.xml.xpath("//statistics")
        if len(stats_elems)>0:
            stats_elem = stats_elems[0]
            parent = stats_elem.xpath("..")[0]
            parent.remove(stats_elem)

        self.submit_aggSuccessCount = 0
        self.submit_aggFailCount = 0
        self.submit_rspec = rspec
        self.connect(self.process, SIGNAL('finished()'), self.getVersionFinished)
        self.process.getSliceMgrVersion()
        self.setStatus("Getting aggregate directory...")

    def getVersionFinished(self):
        self.disconnect(self.process, SIGNAL('finished()'), self.getVersionFinished)

        faultString = self.process.getFaultString()
        if not faultString:
            peers = SfiData().getSliceMgrVersion()["peers"]
            self.submit_aggs = [(key, peers[key]) for key in peers.keys()]
            self.delete_aggs = [(key, peers[key]) for key in peers.keys() if key.startswith("emulab")]
            self.setStatus("<font color='green'>Successfully retrieved agg list.</font>")
            self.deleteNextAgg()
        else:
            self.setStatus("<font color='red'>getSliceMgrVersion failed: %s</font>" % (faultString))

    def deleteNextAgg(self):
        if (self.delete_aggs == []):
            self.submitNextAgg()
            return

        self.delete_agg = self.delete_aggs.pop()

        urlParts = urlparse.urlsplit(self.delete_agg[1])
        amPort = urlParts.port
        amAddr = urlParts.hostname+urlParts.path

        self.setStatus("Deleting slivers on %s..." % (self.delete_agg[0]))

        self.connect(self.process, SIGNAL('finished()'), self.deleteNextAggFinished)
        self.process.deleteSlivers(aggAddr = amAddr, aggPort = amPort)

    def submitNextAgg(self):
        if (self.submit_aggs == []):
            #self.emit(SIGNAL("finished(PyQt_PyObject)"), self)
            self.close()
            return

        self.submit_agg = self.submit_aggs.pop()

        urlParts = urlparse.urlsplit(self.submit_agg[1])
        amPort = urlParts.port
        amAddr = urlParts.hostname+urlParts.path

        self.setStatus("Submitting to %s..." % (self.submit_agg[0]))

        self.connect(self.process, SIGNAL('finished()'), self.submitNextAggFinished)
        self.process.applyRSpec(self.submit_rspec, aggAddr = amAddr, aggPort = amPort, saveObtained=False)

    def submitNextAggFinished(self):
        self.disconnect(self.process, SIGNAL('finished()'), self.submitNextAggFinished)

        faultString = self.process.getFaultString()
        if not faultString:
            self.submit_aggSuccessCount+=1
            self.setStatus("<font color='green'>Succeeded on %s.</font> " % (self.submit_agg[0]))
        else:
            self.submit_aggFailCount+=1
            self.setStatus("<font color='red'>Failed on %s.</font> " % (self.submit_agg[0]))

        self.submitNextAgg()

    def deleteNextAggFinished(self):
        self.disconnect(self.process, SIGNAL('finished()'), self.deleteNextAggFinished)

        faultString = self.process.getFaultString()
        if not faultString:
            self.setStatus("<font color='green'>Succeeded deleteslivers on %s.</font> " % (self.delete_agg[0]))
        else:
            self.setStatus("<font color='red'>Failed deleteslivers on %s.</font> " % (self.delete_agg[0]))

        self.deleteNextAgg()