#!/usr/bin/env python
import logging
import json
import socket

import requests

import sip
sip.setapi('QString', 2)
sip.setapi('QVariant', 2)

from PyQt4 import QtCore
from PyQt4 import QtGui

from leap.base import auth
from leap.base import checks as basechecks
from leap.base import exceptions as baseexceptions
from leap.crypto import certs
from leap.crypto import leapkeyring
from leap.eip import checks as eipchecks
from leap.eip import exceptions as eipexceptions
from leap.gui.progress import ValidationPage
from leap.util.coroutines import coroutine

from leap.gui import mainwindow_rc

try:
    from collections import OrderedDict
except ImportError:
    # We must be in 2.6
    from leap.util.dicts import OrderedDict

logger = logging.getLogger(__name__)

APP_LOGO = ':/images/leap-color-small.png'

# bare is the username portion of a JID
# full includes the "at" and some extra chars
# that can be allowed for fqdn

BARE_USERNAME_REGEX = r"^[A-Za-z\d_]+$"
FULL_USERNAME_REGEX = r"^[A-Za-z\d_@.-]+$"


ErrorLabelStyleSheet = """
QLabel { color: red;
         font-weight: bold}
"""


class FirstRunWizard(QtGui.QWizard):

    def __init__(
            self,
            conductor_instance,
            parent=None,
            eip_username=None,
            providers=None,
            success_cb=None, is_provider_setup=False,
            trusted_certs=None,
            netchecker=basechecks.LeapNetworkChecker,
            providercertchecker=eipchecks.ProviderCertChecker,
            eipconfigchecker=eipchecks.EIPConfigChecker,
            start_eipconnection_signal=None,
            eip_statuschange_signal=None):
        super(FirstRunWizard, self).__init__(
            parent,
            QtCore.Qt.WindowStaysOnTopHint)

        # we keep a reference to the conductor
        # to be able to launch eip checks and connection
        # in the connection page, before the wizard has ended.
        self.conductor = conductor_instance

        self.eip_username = eip_username
        self.providers = providers

        # success callback
        self.success_cb = success_cb

        # is provider setup?
        self.is_provider_setup = is_provider_setup

        # a dict with trusted fingerprints
        # in the form {'nospacesfingerprint': ['host1', 'host2']}
        self.trusted_certs = trusted_certs

        # Checkers
        self.netchecker = netchecker
        self.providercertchecker = providercertchecker
        self.eipconfigchecker = eipconfigchecker

        # Signals
        # will be emitted in connecting page
        self.start_eipconnection_signal = start_eipconnection_signal
        self.eip_statuschange_signal = eip_statuschange_signal

        self.providerconfig = None
        # previously registered
        # if True, jumps to LogIn page.
        # by setting 1st page??
        #self.is_previously_registered = is_previously_registered
        # XXX ??? ^v
        self.is_previously_registered = bool(self.eip_username)
        self.from_login = False

        pages_dict = OrderedDict((
            # (name, WizardPage)
            ('intro', IntroPage),
            ('providerselection',
                SelectProviderPage),
            ('login', LogInPage),
            ('providerinfo', ProviderInfoPage),
            ('providersetupvalidation', ProviderSetupValidationPage),
            ('signup', RegisterUserPage),
            ('connecting', ConnectingPage),
            ('lastpage', LastPage)
        ))
        self.add_pages_from_dict(pages_dict)

        self.validation_errors = {}

        self.setPixmap(
            QtGui.QWizard.BannerPixmap,
            QtGui.QPixmap(':/images/banner.png'))
        self.setPixmap(
            QtGui.QWizard.BackgroundPixmap,
            QtGui.QPixmap(':/images/background.png'))

        self.setWindowTitle("First Run Wizard")

        # TODO: set style for MAC / windows ...
        #self.setWizardStyle()

    def add_pages_from_dict(self, pages_dict):
        """
        @param pages_dict: the dictionary with pages, where
            values are a tuple of InstanceofWizardPage, kwargs.
        @type pages_dict: dict
        """
        for name, page in pages_dict.items():
            # XXX check for is_previously registered
            # and skip adding the signup branch if so
            self.addPage(page())
        self.pages_dict = pages_dict

    def get_page_index(self, page_name):
        """
        returns the index of the given page
        @param page_name: the name of the desired page
        @type page_name: str
        @rparam: index of page in wizard
        @rtype: int
        """
        return self.pages_dict.keys().index(page_name)

    def set_validation_error(self, pagename, error):
        self.validation_errors[pagename] = error

    def get_validation_error(self, pagename):
        return self.validation_errors.get(pagename, None)

    def set_providerconfig(self, providerconfig):
        self.providerconfig = providerconfig

    def setWindowFlags(self, flags):
        logger.debug('setting window flags')
        QtGui.QWizard.setWindowFlags(self, flags)

    def focusOutEvent(self, event):
        # needed ?
        self.setFocus(True)
        self.activateWindow()
        self.raise_()
        self.show()

    def accept(self):
        """
        final step in the wizard.
        gather the info, update settings
        and call the success callback if any has been passed.
        """
        super(FirstRunWizard, self).accept()

        # username and password are in different fields
        # if they were stored in log_in or sign_up pages.
        from_login = self.from_login
        unamek_base = 'userName'
        passwk_base = 'userPassword'
        unamek = 'login_%s' % unamek_base if from_login else unamek_base
        passwk = 'login_%s' % passwk_base if from_login else passwk_base

        username = self.field(unamek)
        password = self.field(passwk)
        provider = self.field('provider_domain')
        remember_pass = self.field('rememberPassword')

        logger.debug('chosen provider: %s', provider)
        logger.debug('username: %s', username)
        logger.debug('remember password: %s', remember_pass)

        # we are assuming here that we only remember one username
        # in the form username@provider.domain
        # We probably could extend this to support some form of
        # profiles.

        settings = QtCore.QSettings()

        settings.setValue("FirstRunWizardDone", True)
        settings.setValue("provider_domain", provider)
        full_username = "%s@%s" % (username, provider)

        settings.setValue("remember_user_and_pass", remember_pass)

        if remember_pass:
            settings.setValue("eip_username", full_username)
            seed = self.get_random_str(10)
            settings.setValue("%s_seed" % provider, seed)

            # XXX #744: comment out for 0.2.0 release
            # if we need to have a version of python-keyring < 0.9
            leapkeyring.leap_set_password(
                full_username, password, seed=seed)

        logger.debug('First Run Wizard Done.')
        cb = self.success_cb
        if cb and callable(cb):
            self.success_cb()

    def get_provider_by_index(self):
        provider = self.field('provider_index')
        return self.providers[provider]

    def get_random_str(self, n):
        from string import (ascii_uppercase, ascii_lowercase, digits)
        from random import choice
        return ''.join(choice(
            ascii_uppercase +
            ascii_lowercase +
            digits) for x in range(n))


class IntroPage(QtGui.QWizardPage):
    def __init__(self, parent=None):
        super(IntroPage, self).__init__(parent)

        self.setTitle("First run wizard.")

        #self.setPixmap(
            #QtGui.QWizard.WatermarkPixmap,
            #QtGui.QPixmap(':/images/watermark1.png'))

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        label = QtGui.QLabel(
            "Now we will guide you through "
            "some configuration that is needed before you "
            "can connect for the first time.<br><br>"
            "If you ever need to modify these options again, "
            "you can find the wizard in the '<i>Settings</i>' menu from the "
            "main window.<br><br>"
            "Do you want to <b>sign up</b> for a new account, or <b>log "
            "in</b> with an already existing username?<br>")
        label.setWordWrap(True)

        radiobuttonGroup = QtGui.QGroupBox()

        self.sign_up = QtGui.QRadioButton(
            "Sign up for a new account.")
        self.sign_up.setChecked(True)
        self.log_in = QtGui.QRadioButton(
            "Log In with my credentials.")

        radiobLayout = QtGui.QVBoxLayout()
        radiobLayout.addWidget(self.sign_up)
        radiobLayout.addWidget(self.log_in)
        radiobuttonGroup.setLayout(radiobLayout)

        layout = QtGui.QVBoxLayout()
        layout.addWidget(label)
        layout.addWidget(radiobuttonGroup)
        self.setLayout(layout)

        self.registerField('is_signup', self.sign_up)

    def validatePage(self):
        return True

    def nextId(self):
        """
        returns next id
        in a non-linear wizard
        """
        if self.sign_up.isChecked():
            next_ = 'providerselection'
        if self.log_in.isChecked():
            next_ = 'login'
        wizard = self.wizard()
        return wizard.get_page_index(next_)


class SelectProviderPage(QtGui.QWizardPage):
    def __init__(self, parent=None, providers=None):
        super(SelectProviderPage, self).__init__(parent)

        self.setTitle("Enter Provider")
        self.setSubTitle(
            "Please enter the domain of the provider you want "
            "to use for your connection."
        )
        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        self.did_cert_check = False

        providerNameLabel = QtGui.QLabel("h&ttps://")
        # note that we expect the bare domain name
        # we will add the scheme later
        providerNameEdit = QtGui.QLineEdit()
        providerNameEdit.cursorPositionChanged.connect(
            self.reset_validation_status)
        providerNameLabel.setBuddy(providerNameEdit)

        # add regex validator
        providerDomainRe = QtCore.QRegExp(r"^[a-z\d_-.]+$")
        providerNameEdit.setValidator(
            QtGui.QRegExpValidator(providerDomainRe, self))
        self.providerNameEdit = providerNameEdit

        # Eventually we will seed a list of
        # well known providers here.

        #providercombo = QtGui.QComboBox()
        #if providers:
            #for provider in providers:
                #providercombo.addItem(provider)
        #providerNameSelect = providercombo

        self.registerField('provider_domain*', self.providerNameEdit)
        #self.registerField('provider_name_index', providerNameSelect)

        validationMsg = QtGui.QLabel("")
        validationMsg.setStyleSheet(ErrorLabelStyleSheet)
        self.validationMsg = validationMsg

        # cert info

        # this is used in the callback
        # for the checkbox changes.
        # tricky, since the first time came
        # from the exception message.
        # should get string from exception too!
        self.bad_cert_status = "Server certificate could not be verified."

        self.certInfo = QtGui.QLabel("")
        self.certInfo.setWordWrap(True)
        self.certWarning = QtGui.QLabel("")
        self.trustProviderCertCheckBox = QtGui.QCheckBox(
            "&Trust this provider certificate.")

        self.trustProviderCertCheckBox.stateChanged.connect(
            self.onTrustCheckChanged)

        layout = QtGui.QGridLayout()
        layout.addWidget(validationMsg, 0, 2)
        layout.addWidget(providerNameLabel, 1, 1)
        layout.addWidget(providerNameEdit, 1, 2)

        # XXX get a groupbox or something....
        certinfoGroup = QtGui.QGroupBox("Certificate validation")
        certinfoLayout = QtGui.QVBoxLayout()
        certinfoLayout.addWidget(self.certInfo)
        certinfoLayout.addWidget(self.certWarning)
        certinfoLayout.addWidget(self.trustProviderCertCheckBox)
        certinfoGroup.setLayout(certinfoLayout)

        layout.addWidget(certinfoGroup, 4, 1, 4, 2)
        self.certinfoGroup = certinfoGroup
        self.certinfoGroup.hide()

        #layout.addWidget(self.certInfo, 4, 1, 4, 2)
        #layout.addWidget(self.certWarning, 6, 1, 6, 2)
        #layout.addWidget(
            #self.trustProviderCertCheckBox,
            #8, 1, 8, 2)

        #self.trustProviderCertCheckBox.hide()
        self.setLayout(layout)

    def is_insecure_cert_trusted(self):
        return self.trustProviderCertCheckBox.isChecked()

    def onTrustCheckChanged(self, state):
        checked = False
        if state == 2:
            checked = True

        if checked:
            self.reset_validation_status()
        else:
            self.set_validation_status(self.bad_cert_status)

        # trigger signal to redraw next button
        self.completeChanged.emit()

    def reset_validation_status(self):
        """
        empty the validation msg
        """
        self.validationMsg.setText('')

    def set_validation_status(self, status):
        self.validationMsg.setText(status)

    def add_cert_info(self, certinfo):
        self.certWarning.setText(
            "Do you want to <b>trust this provider certificate?</b>")
        self.certInfo.setText(
            'SHA-256 fingerprint: <i>%s</i><br>' % certinfo)
        self.certInfo.setWordWrap(True)
        self.certinfoGroup.show()

    # pagewizard methods

    def isComplete(self):
        if not self.did_cert_check:
            return True
        if self.is_insecure_cert_trusted():
            return True
        return False

    def initializePage(self):
        self.certinfoGroup.hide()

    def validatePage(self):
        ##################################
        # XXX FIXME!
        ##################################
        ##################################
        ##################################
        ##################################
        ##### validation skipped !!! #####
        ##################################
        ##################################
        return True
        ##################################
        ##################################
        ##################################

        wizard = self.wizard()
        netchecker = wizard.netchecker()
        providercertchecker = wizard.providercertchecker()
        eipconfigchecker = wizard.eipconfigchecker()

        domain = self.providerNameEdit.text()

        # try name resolution
        try:
            netchecker.check_name_resolution(
                domain)

        except baseexceptions.LeapException as exc:
            self.set_validation_status(exc.usermessage)
            return False

        # try https connection
        try:
            providercertchecker.is_https_working(
                "https://%s" % domain,
                verify=True)

        except eipexceptions.HttpsBadCertError as exc:
            if self.trustProviderCertCheckBox.isChecked():
                pass
            else:
                self.set_validation_status(exc.usermessage)
                fingerprint = certs.get_cert_fingerprint(
                    domain=domain, sep=" ")

                # it's ok if we've trusted this fgprt before
                trustedcrts = self.wizard().trusted_certs
                if trustedcrts and fingerprint.replace(' ', '') in trustedcrts:
                    pass
                else:
                    # let your user face panick :P
                    self.add_cert_info(fingerprint)
                    self.did_cert_check = True
                    self.completeChanged.emit()
                    return False

        except baseexceptions.LeapException as exc:
            self.set_validation_status(exc.usermessage)
            return False

        # try download provider info...
        eipconfigchecker.fetch_definition(domain=domain)
        wizard.set_providerconfig(
            eipconfigchecker.defaultprovider.config)

        # all ok, go on...
        return True

    def nextId(self):
        wizard = self.wizard()
        if not wizard:
            return
        return wizard.get_page_index('providerinfo')


class ProviderInfoPage(QtGui.QWizardPage):
    def __init__(self, parent=None):
        super(ProviderInfoPage, self).__init__(parent)

        self.setTitle("Provider Info")
        self.setSubTitle("Available information about chosen provider.")

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        displayName = QtGui.QLabel("")
        description = QtGui.QLabel("")
        enrollment_policy = QtGui.QLabel("")
        # XXX set stylesheet...
        # prettify a little bit.
        # bigger fonts and so on...
        self.displayName = displayName
        self.description = description
        self.enrollment_policy = enrollment_policy

        layout = QtGui.QGridLayout()
        layout.addWidget(displayName, 0, 1)
        layout.addWidget(description, 1, 1)
        layout.addWidget(enrollment_policy, 2, 1)

        self.setLayout(layout)

    def initializePage(self):
        # XXX get multilingual objects
        # directly from the config object

        lang = "en"
        pconfig = self.wizard().providerconfig

        dn = pconfig.get('display_name')
        display_name = dn[lang] if dn else ''
        self.displayName.setText(
            "<b>%s</b>" % display_name)

        desc = pconfig.get('description')
        description_text = desc[lang] if desc else ''
        self.description.setText(
            "<i>%s</i>" % description_text)

        enroll = pconfig.get('enrollment_policy')
        if enroll:
            self.enrollment_policy.setText(
                'enrollment policy: %s' % enroll)

    def nextId(self):
        wizard = self.wizard()
        next_ = "providersetupvalidation"
        return wizard.get_page_index(next_)


class ProviderSetupValidationPage(ValidationPage):
    def __init__(self, parent=None):
        super(ProviderSetupValidationPage, self).__init__(parent)
        self.setTitle("Setting up provider")
        #self.setSubTitle(
            #"auto configuring provider...")

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

    def _do_checks(self, signal=None):
        """
        executes actual checks in a separate thread
        """
        import time
        domain = self.field('provider_domain')
        wizard = self.wizard()
        pconfig = wizard.providerconfig

        pCertChecker = wizard.providercertchecker
        certchecker = pCertChecker(domain=domain)

        signal.emit('Fetching CA certificate')
        self.progress.setValue(30)

        if pconfig:
            ca_cert_uri = pconfig.get('ca_cert_uri').geturl()
        else:
            ca_cert_uri = None

        # XXX check scheme == "https"
        # XXX passing verify == False because
        # we have trusted right before.
        # We should check it's the same domain!!!
        # (Check with the trusted fingerprints dict
        # or something smart)

        #certchecker.download_ca_cert(
            #uri=ca_cert_uri,
            #verify=False)

        time.sleep(2)

        signal.emit('Checking CA fingerprint')
        self.progress.setValue(66)
        #ca_cert_fingerprint = pconfig.get('ca_cert_fingerprint', None)

        # XXX get fingerprint dict (types)
        #sha256_fpr = ca_cert_fingerprint.split('=')[1]

        #validate_fpr = certchecker.check_ca_cert_fingerprint(
            #fingerprint=sha256_fpr)
        time.sleep(0.5)
        #if not validate_fpr:
            # XXX update validationMsg
            # should catch exception
            #return False

        signal.emit('Validating api certificate')
        self.progress.setValue(90)

        #api_uri = pconfig.get('api_uri', None)
        #try:
            #api_cert_verified = certchecker.verify_api_https(api_uri)
        #except requests.exceptions.SSLError as exc:
            #logger.error('BUG #638. %s' % exc.message)
            # XXX RAISE! See #638
            # bypassing until the hostname is fixed.
            # We probably should raise yet-another-warning
            # here saying user that the hostname "XX.XX.XX.XX' does not
            # match 'foo.bar.baz'
            #api_cert_verified = True

        #if not api_cert_verified:
            # XXX update validationMsg
            # should catch exception
            #return False
        time.sleep(0.5)
        #ca_cert_path = checker.ca_cert_path

        self.progress.setValue(100)
        signal.emit('end_sentinel')
        time.sleep(1)

    def _do_validation(self):
        """
        called after _do_checks has finished
        (connected to checker thread finished signal)
        """
        if self.errors:
            print 'going back with errors'
            wizard.set_validation_error(
                'signup', 'that name is taken')
            self.go_back()
        else:
            print 'going next'
            self.go_next()

    def nextId(self):
        wizard = self.wizard()
        if not wizard:
            return
        is_signup = self.field('is_signup')
        if is_signup is True:
            next_ = 'signup'
        if is_signup is False:
            next_ = 'connecting'
        return wizard.get_page_index(next_)


class UserFormMixIn(object):

    def reset_validation_status(self):
        """
        empty the validation msg
        """
        self.validationMsg.setText('')

    def set_validation_status(self, msg):
        """
        set generic validation status
        """
        self.validationMsg.setText(msg)


class LogInPage(QtGui.QWizardPage, UserFormMixIn):
    def __init__(self, parent=None):
        super(LogInPage, self).__init__(parent)

        self.setTitle("Log In")
        self.setSubTitle("Log in with your credentials.")

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        userNameLabel = QtGui.QLabel("User &name:")
        userNameLineEdit = QtGui.QLineEdit()
        userNameLineEdit.cursorPositionChanged.connect(
            self.reset_validation_status)
        userNameLabel.setBuddy(userNameLineEdit)

        # let's add regex validator
        usernameRe = QtCore.QRegExp(FULL_USERNAME_REGEX)
        userNameLineEdit.setValidator(
            QtGui.QRegExpValidator(usernameRe, self))
        self.userNameLineEdit = userNameLineEdit

        userPasswordLabel = QtGui.QLabel("&Password:")
        self.userPasswordLineEdit = QtGui.QLineEdit()
        self.userPasswordLineEdit.setEchoMode(
            QtGui.QLineEdit.Password)
        userPasswordLabel.setBuddy(self.userPasswordLineEdit)

        self.registerField('login_userName*', self.userNameLineEdit)
        self.registerField('login_userPassword*', self.userPasswordLineEdit)

        layout = QtGui.QGridLayout()
        layout.setColumnMinimumWidth(0, 20)

        validationMsg = QtGui.QLabel("")
        validationMsg.setStyleSheet(ErrorLabelStyleSheet)
        self.validationMsg = validationMsg

        layout.addWidget(validationMsg, 0, 3)
        layout.addWidget(userNameLabel, 1, 0)
        layout.addWidget(self.userNameLineEdit, 1, 3)
        layout.addWidget(userPasswordLabel, 2, 0)
        layout.addWidget(self.userPasswordLineEdit, 2, 3)

        self.setLayout(layout)

        #self.registerField('is_login_wizard')

    def onUserNameEdit(self, *args):
        if self.initial_username_sample:
            self.userNameLineEdit.setText('')
            self.initial_username_sample = None

    # pagewizard methods

    def nextId(self):
        wizard = self.wizard()
        if not wizard:
            return
        if wizard.is_provider_setup is True:
            next_ = 'connecting'
        if wizard.is_provider_setup is False:
            next_ = 'providersetup'
        return wizard.get_page_index(next_)

    def initializePage(self):
        self.userNameLineEdit.setText('username@provider.example.org')
        self.userNameLineEdit.cursorPositionChanged.connect(
            self.onUserNameEdit)
        self.initial_username_sample = True

    def validatePage(self):
        wizard = self.wizard()
        eipconfigchecker = wizard.eipconfigchecker()

        full_username = self.userNameLineEdit.text()
        password = self.userPasswordLineEdit.text()
        if full_username.count('@') != 1:
            self.set_validation_status(
                "Username must be in the username@provider form.")
            return False

        username, domain = full_username.split('@')
        self.setField('provider_domain', domain)
        self.setField('login_userName', username)
        self.setField('login_userPassword', password)

        # Able to contact domain?
        # can get definition?
        # two-by-one
        try:
            eipconfigchecker.fetch_definition(domain=domain)

        # we're using requests here for all
        # the possible error cases that it catches.
        except requests.exceptions.ConnectionError as exc:
            self.set_validation_status(exc.message[1])
            return False
        except requests.exceptions.HTTPError as exc:
            self.set_validation_status(exc.message)
            return False
        wizard.set_providerconfig(
            eipconfigchecker.defaultprovider.config)

        # XXX validate user? or we leave that for later?
        # I think the best thing to do for that is
        # continue to provider setup page, and if
        # we catch authentication error there, redirect
        # again to this page (by clicking "next" to
        # come here).
        # Rationale is that we need to verify server certs
        # and so on.

        # mark that we came from login page.
        self.wizard().from_login = True

        return True


class RegisterUserPage(QtGui.QWizardPage, UserFormMixIn):
    setSigningUpStatus = QtCore.pyqtSignal([])

    def __init__(self, parent=None):
        super(RegisterUserPage, self).__init__(parent)

        # bind wizard page signals
        self.setSigningUpStatus.connect(
            lambda: self.set_validation_status(
                'validating'))

        self.setTitle("Sign Up")

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        userNameLabel = QtGui.QLabel("User &name:")
        userNameLineEdit = QtGui.QLineEdit()
        userNameLineEdit.cursorPositionChanged.connect(
            self.reset_validation_status)
        userNameLabel.setBuddy(userNameLineEdit)

        # let's add regex validator
        usernameRe = QtCore.QRegExp(BARE_USERNAME_REGEX)
        userNameLineEdit.setValidator(
            QtGui.QRegExpValidator(usernameRe, self))
        self.userNameLineEdit = userNameLineEdit

        userPasswordLabel = QtGui.QLabel("&Password:")
        self.userPasswordLineEdit = QtGui.QLineEdit()
        self.userPasswordLineEdit.setEchoMode(
            QtGui.QLineEdit.Password)
        userPasswordLabel.setBuddy(self.userPasswordLineEdit)

        userPassword2Label = QtGui.QLabel("Password (again):")
        self.userPassword2LineEdit = QtGui.QLineEdit()
        self.userPassword2LineEdit.setEchoMode(
            QtGui.QLineEdit.Password)
        userPassword2Label.setBuddy(self.userPassword2LineEdit)

        rememberPasswordCheckBox = QtGui.QCheckBox(
            "&Remember username and password.")
        rememberPasswordCheckBox.setChecked(True)

        self.registerField('userName*', self.userNameLineEdit)
        self.registerField('userPassword*', self.userPasswordLineEdit)

        # XXX missing password confirmation
        # XXX validator!

        self.registerField('rememberPassword', rememberPasswordCheckBox)

        layout = QtGui.QGridLayout()
        layout.setColumnMinimumWidth(0, 20)

        validationMsg = QtGui.QLabel("")
        validationMsg.setStyleSheet(ErrorLabelStyleSheet)

        self.validationMsg = validationMsg

        layout.addWidget(validationMsg, 0, 3)
        layout.addWidget(userNameLabel, 1, 0)
        layout.addWidget(self.userNameLineEdit, 1, 3)
        layout.addWidget(userPasswordLabel, 2, 0)
        layout.addWidget(userPassword2Label, 3, 0)
        layout.addWidget(self.userPasswordLineEdit, 2, 3)
        layout.addWidget(self.userPassword2LineEdit, 3, 3)
        layout.addWidget(rememberPasswordCheckBox, 4, 3, 4, 4)
        self.setLayout(layout)

    # overwritten methods

    def initializePage(self):
        """
        inits wizard page
        """
        provider = self.field('provider_domain')
        self.setSubTitle(
            "Register a new user with provider %s." %
            provider)
        self.validationMsg.setText('')

    def validatePage(self):
        """
        validation
        we initialize the srp protocol register
        and try to register user. if error
        returned we write validation error msg
        above the form.
        """
        # the slot for this signal is not doing
        # what's expected. Investigate why,
        # right now we're not giving any feedback
        # to the user re. what's going on. The only
        # thing I can see as a workaround is setting
        # a low timeout.
        self.setSigningUpStatus.emit()

        username = self.userNameLineEdit.text()
        password = self.userPasswordLineEdit.text()
        password2 = self.userPassword2LineEdit.text()

        # have some call to a password checker...

        if password != password2:
            self.set_validation_status('Password does not match.')
            return False

        if len(password) < 6:
            self.set_validation_status('Password too short.')
            return False

        if password == "123456":
            # joking
            self.set_validation_status('Password too obvious.')
            return False

        domain = self.field('provider_domain')

        # XXX TODO -- remove debug info
        # XXX get from provider info
        # XXX enforce https
        # and pass a verify value

        signup = auth.LeapSRPRegister(
            schema="http",
            #provider=domain,

            ###########################
            # FIXME! REMOVE DEBUG!
            #
            # debug -----
            provider="localhost",
            #register_path="timeout",
            port=8000
        )
        try:
            ok, req = signup.register_user(username, password)
        except socket.timeout:
            self.set_validation_status(
                "Error connecting to provider (timeout)")
            return False

        except requests.exceptions.ConnectionError as exc:
            logger.error(exc)
            self.set_validation_status(
                "Error connecting to provider "
                "(connection error)")
            return False

        if ok:
            return True

        # something went wrong.
        # not registered, let's catch what.
        # get timeout
        # ...
        if req.status_code == 500:
            self.set_validation_status(
                "Error during registration (500)")
            return False

        validation_msgs = json.loads(req.content)
        logger.debug('validation errors: %s' % validation_msgs)
        errors = validation_msgs.get('errors', None)
        if errors and errors.get('login', None):
            # XXX this sometimes catch the blank username
            # but we're not allowing that (soon)
            self.set_validation_status(
                'Username not available.')
        else:
            self.set_validation_status(
                "Error during sign up")
        return False

    def nextId(self):
        wizard = self.wizard()
        if not wizard:
            return
        return wizard.get_page_index('connecting')


class GlobalEIPSettings(QtGui.QWizardPage):
    """
    not in use right now
    """
    def __init__(self, parent=None):
        super(GlobalEIPSettings, self).__init__(parent)


class ConnectingPage(QtGui.QWizardPage):
    def __init__(self, parent=None):
        super(ConnectingPage, self).__init__(parent)

        self.setTitle("Connecting")
        self.setSubTitle('Connecting to provider.')

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        self.status = QtGui.QLabel("")
        self.status.setWordWrap(True)
        self.progress = QtGui.QProgressBar()
        self.progress.setMaximum(100)
        self.progress.hide()

        # for pre-checks
        self.status_line_1 = QtGui.QLabel()
        self.status_line_2 = QtGui.QLabel()
        self.status_line_3 = QtGui.QLabel()
        self.status_line_4 = QtGui.QLabel()

        # for connecting signals...
        self.status_line_5 = QtGui.QLabel()

        layout = QtGui.QGridLayout()
        layout.addWidget(self.status, 0, 1)
        layout.addWidget(self.progress, 5, 1)
        layout.addWidget(self.status_line_1, 8, 1)
        layout.addWidget(self.status_line_2, 9, 1)
        layout.addWidget(self.status_line_3, 10, 1)
        layout.addWidget(self.status_line_4, 11, 1)

        # XXX to be used?
        #self.validation_status = QtGui.QLabel("")
        #self.validation_status.setStyleSheet(
            #ErrorLabelStyleSheet)
        #self.validation_msg = QtGui.QLabel("")

        self.setLayout(layout)

        self.goto_login_again = False

    def set_status(self, status):
        self.status.setText(status)
        self.status.setWordWrap(True)

    def set_status_line(self, line, status):
        line = getattr(self, 'status_line_%s' % line)
        if line:
            line.setText(status)

    def set_validation_status(self, status):
        # Do not remember if we're using
        # status lines > 3 now...
        # if we are, move below
        self.status_line_3.setStyleSheet(
            ErrorLabelStyleSheet)
        self.status_line_3.setText(status)

    def set_validation_message(self, message):
        self.status_line_4.setText(message)
        self.status_line_4.setWordWrap(True)

    def get_donemsg(self, msg):
        return "%s ... done" % msg

    def run_eip_checks_for_provider_and_connect(self, domain):
        wizard = self.wizard()
        conductor = wizard.conductor
        start_eip_signal = getattr(
            wizard,
            'start_eipconnection_signal', None)

        conductor.set_provider_domain(domain)
        conductor.run_checks()
        self.conductor = conductor
        errors = self.eip_error_check()
        if not errors and start_eip_signal:
            start_eip_signal.emit()

    def eip_error_check(self):
        """
        a version of the main app error checker,
        but integrated within the connecting page of the wizard.
        consumes the conductor error queue.
        pops errors, and add those to the wizard page
        """
        logger.debug('eip error check from connecting page')
        errq = self.conductor.error_queue
        # XXX missing!

    def fetch_and_validate(self):
        import time
        domain = self.field('provider_domain')
        wizard = self.wizard()
        #pconfig = wizard.providerconfig
        eipconfigchecker = wizard.eipconfigchecker()
        pCertChecker = wizard.providercertchecker(
            domain=domain)

        # username and password are in different fields
        # if they were stored in log_in or sign_up pages.
        from_login = self.wizard().from_login
        unamek_base = 'userName'
        passwk_base = 'userPassword'
        unamek = 'login_%s' % unamek_base if from_login else unamek_base
        passwk = 'login_%s' % passwk_base if from_login else passwk_base

        username = self.field(unamek)
        password = self.field(passwk)
        credentials = username, password

        self.progress.show()

        fetching_eip_conf_msg = 'Fetching eip service configuration'
        self.set_status(fetching_eip_conf_msg)
        self.progress.setValue(30)

        # Fetching eip service
        eipconfigchecker.fetch_eip_service_config(
            domain=domain)

        self.status_line_1.setText(
            self.get_donemsg(fetching_eip_conf_msg))

        getting_client_cert_msg = 'Getting client certificate'
        self.set_status(getting_client_cert_msg)
        self.progress.setValue(66)

        # Download cert
        try:
            pCertChecker.download_new_client_cert(
                credentials=credentials)
        except auth.SRPAuthenticationError:
            self.set_validation_status("Authentication error")
            #self.set_validation_message(
                #"Click <i>next</i> to introduce your "
                #"credentials again")
            self.goto_login_again = True
            # We should do something here
            # but it's broken
            return False

        time.sleep(2)
        self.status_line_2.setText(
            self.get_donemsg(getting_client_cert_msg))

        validating_clientcert_msg = 'Validating client certificate'
        self.set_status(validating_clientcert_msg)
        self.progress.setValue(90)
        time.sleep(2)
        self.status_line_3.setText(
            self.get_donemsg(validating_clientcert_msg))

        self.progress.setValue(100)
        time.sleep(3)

        # here we go! :)
        self.run_eip_checks_for_provider_and_connect(domain)

        #self.validation_block = self.wait_for_validation_block()

        # XXX signal timeout!
        return True

    #
    # wizardpage methods
    #

    def nextId(self):
        wizard = self.wizard()
        # XXX this does not work because
        # page login has already been met
        #if self.goto_login_again:
            #next_ = "login"
        #else:
            #next_ = "lastpage"
        next_ = "lastpage"
        return wizard.get_page_index(next_)

    def initializePage(self):
        # XXX if we're coming from signup page
        # we could say something like
        # 'registration successful!'
        self.status.setText(
            "We have "
            "all we need to connect with the provider.<br><br> "
            "Click <i>next</i> to continue. ")
        self.progress.setValue(0)
        self.progress.hide()
        self.status_line_1.setText('')
        self.status_line_2.setText('')
        self.status_line_3.setText('')

    def validatePage(self):
        validated = self.fetch_and_validate()
        return validated


class LastPage(QtGui.QWizardPage):
    def __init__(self, parent=None):
        super(LastPage, self).__init__(parent)

        self.setTitle("Connecting to Encrypted Internet Proxy service...")

        self.setPixmap(
            QtGui.QWizard.LogoPixmap,
            QtGui.QPixmap(APP_LOGO))

        #self.setPixmap(
            #QtGui.QWizard.WatermarkPixmap,
            #QtGui.QPixmap(':/images/watermark2.png'))

        self.label = QtGui.QLabel()
        self.label.setWordWrap(True)

        self.status_line_1 = QtGui.QLabel()
        self.status_line_2 = QtGui.QLabel()
        self.status_line_3 = QtGui.QLabel()
        self.status_line_4 = QtGui.QLabel()

        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.label)

        # make loop
        layout.addWidget(self.status_line_1)
        layout.addWidget(self.status_line_2)
        layout.addWidget(self.status_line_3)
        layout.addWidget(self.status_line_4)

        self.setLayout(layout)

    def set_status_line(self, line, status):
        statusline = getattr(self, 'status_line_%s' % line)
        if statusline:
            statusline.setText(status)

    def set_finished_status(self):
        self.setTitle('You are now using an encrypted connection!')
        finishText = self.wizard().buttonText(
            QtGui.QWizard.FinishButton)
        finishText = finishText.replace('&', '')
        self.label.setText(
            "Click '<i>%s</i>' to end the wizard and "
            "save your settings." % finishText)

    @coroutine
    def eip_status_handler(self):
        logger.debug('logging status in last page')
        self.validation_done = False
        status_count = 0
        try:
            while True:
                status = (yield)
                status_count += 1
                # XXX add to line...
                logger.debug('status --> %s', status)
                self.set_status_line(status_count, status)
                if status == "connected":
                    self.set_finished_status()
                    break
        except GeneratorExit:
            pass

    def initializePage(self):
        wizard = self.wizard()
        if not wizard:
            return
        eip_status_handler = self.eip_status_handler()
        eip_statuschange_signal = wizard.eip_statuschange_signal
        if eip_statuschange_signal:
            eip_statuschange_signal.connect(
                lambda status: eip_status_handler.send(status))


if __name__ == '__main__':
    # standalone test
    import sys
    import logging
    logging.basicConfig()
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG)

    app = QtGui.QApplication(sys.argv)

    trusted_certs = {
        "3DF83F316BFA0186"
        "0A11A5C9C7FC24B9"
        "18C62B941192CC1A"
        "49AE62218B2A4B7C": ['springbok']}

    wizard = FirstRunWizard(None, trusted_certs=trusted_certs)
    wizard.show()
    sys.exit(app.exec_())