#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
Libervia: a Salut à Toi frontend
Copyright (C) 2011, 2012, 2013 Jérôme Poisson <goffi@goffi.org>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""

import pyjd # this is dummy in pyjs
from pyjamas.ui.RootPanel import RootPanel
from pyjamas.ui.HTML import HTML
from pyjamas.ui.KeyboardListener import KEY_ESCAPE
from pyjamas.Timer import Timer
from pyjamas import Window, DOM
from pyjamas.JSONService import JSONProxy
from browser_side.register import RegisterBox
from browser_side.contact import ContactPanel
from browser_side.base_widget import WidgetsPanel
from browser_side.panels import MicroblogItem
from browser_side import panels, dialog
from browser_side.jid import JID
from browser_side.tools import html_sanitize

MAX_MBLOG_CACHE = 500 #Max microblog entries kept in memories

class LiberviaJsonProxy(JSONProxy):
    def __init__(self, *args, **kwargs):
        JSONProxy.__init__(self, *args, **kwargs)
        self.handler=self
        self.cb={}
        self.eb={}

    def call(self, method, cb, *args):
        _id = self.callMethod(method,args)
        if cb:
            if isinstance(cb, tuple):
                if len(cb) != 2:
                    print ("ERROR: tuple syntax for bridge.call is (callback, errback), aborting")
                    return
                self.cb[_id] = cb[0]
                self.eb[_id] = cb[1]
            else:
                self.cb[_id] = cb

    def onRemoteResponse(self, response, request_info):
        if request_info.id in self.cb:
            _cb = self.cb[request_info.id]
            # if isinstance(_cb, tuple):
            #     #we have arguments attached to the callback
            #     #we send them after the answer
            #     callback, args = _cb
            #     callback(response, *args)
            # else:
            #     #No additional argument, we call directly the callback
            _cb(response)
            del self.cb[request_info.id]
            if request_info.id in self.eb:
                del self.eb[request_info.id]
    
    def onRemoteError(self, code, errobj, request_info):
        """def dump(obj):
            print "\n\nDUMPING %s\n\n" % obj
            for i in dir(obj):
                print "%s: %s" % (i, getattr(obj,i))"""
        if request_info.id in self.eb:
            _eb = self.eb[request_info.id]
            _eb((code, errobj))
            del self.cb[request_info.id]
            del self.eb[request_info.id]
        else:
            if code != 0:
                print ("Internal server error")
                """for o in code, error, request_info:
                    dump(o)"""
            else:
                if isinstance(errobj['message'],dict):
                   print("Error %s: %s" % (errobj['message']['faultCode'], errobj['message']['faultString']))
                else:
                   print("Error: %s" % errobj['message'])

class RegisterCall(LiberviaJsonProxy):
    def __init__(self):
        LiberviaJsonProxy.__init__(self, "/register_api",
                        ["isRegistered","isConnected","connect"])

class BridgeCall(LiberviaJsonProxy):
    def __init__(self):
        LiberviaJsonProxy.__init__(self, "/json_api",
                        ["getContacts", "addContact", "sendMessage", "sendMblog", "sendMblogComment",
                         "getLastMblogs", "getMassiveLastMblogs", "getMblogComments", "getProfileJid",
                         "getHistory", "getPresenceStatus", "joinMUC", "mucLeave", "getRoomsJoined",
                         "launchTarotGame", "getTarotCardsPaths", "tarotGameReady",
                         "tarotGameContratChoosed", "tarotGamePlayCards", "launchRadioCollective",
                         "getWaitingSub", "subscription", "delContact", "updateContact", "getCard",
                         "getEntityData", "getParamsUI", "setParam", "launchAction", "disconnect",
                         "chatStateComposing"
                        ])

class BridgeSignals(LiberviaJsonProxy):
    RETRY_BASE_DELAY = 1000

    def __init__(self, host):
        self.host = host
        self.retry_delay = self.RETRY_BASE_DELAY 
        LiberviaJsonProxy.__init__(self, "/json_signal_api",
                        ["getSignals"])

    def onRemoteResponse(self, response, request_info):
        self.retry_delay = self.RETRY_BASE_DELAY 
        LiberviaJsonProxy.onRemoteResponse(self, response, request_info)


    def onRemoteError(self, code, errobj, request_info):
        if errobj['message'] == 'Empty Response':
            Window.getLocation().reload() # XXX: reset page in case of session ended.
                                          # FIXME: Should be done more properly without hard reload
        LiberviaJsonProxy.onRemoteError(self, code, errobj, request_info)
        #we now try to reconnect
        if isinstance(errobj['message'],dict) and errobj['message']['faultCode']==0:
           Window.alert('You are not allowed to connect to server')
        else:
            def _timerCb():
                self.host.bridge_signals.call('getSignals', self.host._getSignalsCB)
            Timer(notify=_timerCb).schedule(self.retry_delay)
            self.retry_delay *= 2

class SatWebFrontend:
    def onModuleLoad(self):
        print "============ onModuleLoad =============="
        panels.ChatPanel.registerClass()
        panels.MicroblogPanel.registerClass()
        self.whoami = None
        self._selected_listeners = set()
        self.bridge = BridgeCall()
        self.bridge_signals = BridgeSignals(self)
        self.uni_box = None
        self.status_panel = panels.StatusPanel(self)
        self.contact_panel = ContactPanel(self)
        self.panel = panels.MainPanel(self)
        self.discuss_panel = self.panel.discuss_panel
        self.tab_panel = self.panel.tab_panel
        self.tab_panel.addTabListener(self)
        self.libervia_widgets = set() #keep track of all actives LiberviaWidgets
        self.room_list = set() #set of rooms 
        self.mblog_cache = [] #used to keep our own blog entries in memory, to show them in new mblog panel
        self.avatars_cache = {} #keep track of jid's avatar hash (key=jid, value=file)
        self.current_action_ids = set()
        #self.discuss_panel.addWidget(panels.EmptyPanel(self))
        self.discuss_panel.addWidget(panels.MicroblogPanel(self, []))
        #self.discuss_panel.addWidget(panels.EmptyPanel(self))
        self._register_box = None
        RootPanel().add(self.panel)
        DOM.addEventPreview(self)
        self.resize()
        self._register = RegisterCall()
        self._register.call('isRegistered',self._isRegisteredCB)
        self.initialised = False
        self.init_cache = [] # used to cache events until initialisation is done

    def addSelectedListener(self, callback):
        self._selected_listeners.add(callback)

    def getSelected(self):
        wid = self.tab_panel.getCurrentPanel()
        if not isinstance(wid, WidgetsPanel):
            print "ERROR: Tab widget is not a WidgetsPanel, can't get selected widget"
            return None
        return wid.selected

    def setSelected(self, widget):
        """Define the selected widget"""
        widgets_panel = self.tab_panel.getCurrentPanel()
        if not isinstance(widgets_panel, WidgetsPanel):
            return

        selected = widgets_panel.selected

        if selected == widget:
            return

        if selected:
            selected.removeStyleName('selected_widget')
    
        widgets_panel.selected = widget
    
        if widget:
            widgets_panel.selected.addStyleName('selected_widget')

        for callback in self._selected_listeners:
            callback(widget)

    def resize(self):
        """Resize elements"""
        Window.onResize()

    def onBeforeTabSelected(self, sender, tab_index):
        return True

    def onTabSelected(self, sender, tab_index):
        selected = self.getSelected()
        for callback in self._selected_listeners:
            callback(selected)

    def onEventPreview(self, event):
        if event.type in ["keydown", "keypress", "keyup"] and event.keyCode == KEY_ESCAPE:
            #needed to prevent request cancellation in Firefox
            event.preventDefault()
        return True

    def getAvatar(self, jid_str):
        """Return avatar of a jid if in cache, else ask for it"""
        def dataReceived(result):
            if 'avatar' in result:
                self._entityDataUpdatedCb(jid_str, 'avatar', result['avatar'])
            else:
                self.bridge.call("getCard", None, jid_str)
        def avatarError(error_data):
            # The jid is maybe not in our roster, we ask for the VCard
            self.bridge.call("getCard", None, jid_str)
    
        if jid_str not in self.avatars_cache:
            self.bridge.call('getEntityData', (dataReceived, avatarError), jid_str, ['avatar'])
            self.avatars_cache[jid_str] = "/media/misc/empty_avatar"
        return self.avatars_cache[jid_str]

    def registerWidget(self, wid):
        print "Registering", wid
        self.libervia_widgets.add(wid)

    def unregisterWidget(self, wid):
        try:
            self.libervia_widgets.remove(wid)
        except KeyError:
            print ('WARNING: trying to remove a non registered Widget:', wid)

    def setUniBox(self, unibox):
        """register the unibox widget"""
        self.uni_box = unibox
        self.uni_box.addKey("@@: ")

    def addTab(self, wid, label):
        """Create a new tab and add a widget in
        @param wid: LiberviaWidget to add
        @param label: label of the tab"""
        _widgets_panel = WidgetsPanel(self)
        _widgets_panel.addWidget(wid)
        self.tab_panel.add(_widgets_panel, label)
        self.tab_panel.selectTab(self.tab_panel.getWidgetCount() - 1)

    def addWidget(self, wid):
        """ Add a widget at the bottom of the current tab
        @param wid: LiberviaWidget to add """
        panel = self.tab_panel.getCurrentPanel()
        panel.addWidget(wid)

    def _isRegisteredCB(self, registered):
        if not registered:
            self._register_box = RegisterBox(self.logged)
            self._register_box.centerBox()
            self._register_box.show()
        else:
            self._register.call('isConnected', self._isConnectedCB)

    def _isConnectedCB(self, connected):
        if not connected:
            self._register.call('connect',lambda x:self.logged())
        else:
            self.logged()

    def logged(self):
        if self._register_box:
            self._register_box.hide()
            del self._register_box # don't work if self._register_box is None

        #it's time to fill the page
        self.bridge.call('getContacts', self._getContactsCB)
        self.bridge.call('getParamsUI', self._getParamsUICB)
        self.bridge_signals.call('getSignals', self._getSignalsCB)
        #We want to know our own jid
        self.bridge.call('getProfileJid', self._getProfileJidCB)

    def _getContactsCB(self, contacts_data):
        for contact in contacts_data:
            jid, attributes, groups = contact
            self._newContactCb(jid, attributes, groups)

    def _getSignalsCB(self, signal_data):
        self.bridge_signals.call('getSignals', self._getSignalsCB)
        print('Got signal ==> name: %s, params: %s' % (signal_data[0],signal_data[1]))
        name,args = signal_data
        if name == 'personalEvent':
            self._personalEventCb(*args)
        elif name == 'newMessage':
            self._newMessageCb(*args)
        elif name == 'presenceUpdate':
            self._presenceUpdateCb(*args)
        elif name == 'roomJoined':
            self._roomJoinedCb(*args)
        elif name == 'roomUserJoined':
            self._roomUserJoinedCb(*args)
        elif name == 'roomUserLeft':
            self._roomUserLeftCb(*args)
        elif name == 'tarotGameStarted':
            self._tarotGameStartedCb(*args)
        elif name == 'tarotGameNew' or \
             name == 'tarotGameChooseContrat' or \
             name == 'tarotGameShowCards' or \
             name == 'tarotGameInvalidCards' or \
             name == 'tarotGameCardsPlayed' or \
             name == 'tarotGameYourTurn' or \
             name == 'tarotGameScore':
            self._tarotGameGenericCb(name, args[0], args[1:])
        elif name == 'radiocolStarted':
            self._radioColStartedCb(*args)
        elif name == 'radiocolPreload':
            self._radioColGenericCb(name, args[0], args[1:])
        elif name == 'radiocolPlay':
            self._radioColGenericCb(name, args[0], args[1:])
        elif name == 'radiocolNoUpload':
            self._radioColGenericCb(name, args[0], args[1:])
        elif name == 'radiocolUploadOk':
            self._radioColGenericCb(name, args[0], args[1:])
        elif name == 'radiocolSongRejected':
            self._radioColGenericCb(name, args[0], args[1:])
        elif name == 'subscribe':
            self._subscribeCb(*args)
        elif name == 'contactDeleted':
            self._contactDeletedCb(*args)
        elif name == 'newContact':
            self._newContactCb(*args)
        elif name == 'entityDataUpdated':
            self._entityDataUpdatedCb(*args)
        elif name == 'chatStateReceived':
            self._chatStateReceivedCb(*args)

    def _getParamsUICB(self, xmlui):
        """Hide the parameters item if there's nothing to display"""
        if not xmlui:
            self.panel.menu.removeItemParams()

    def _ownBlogsFills(self, mblogs):
        #put our own microblogs in cache, then fill all panels with them
        for publisher in mblogs:
            for mblog in mblogs[publisher]:
                if not mblog.has_key('content'):
                    print ("WARNING: No content found in microblog [%s]", mblog)
                    continue
                if mblog.has_key('groups'):
                    _groups = set(mblog['groups'].split() if mblog['groups'] else [])
                else:
                    _groups=None
                mblog_entry = MicroblogItem(mblog)
                self.mblog_cache.append((_groups, mblog_entry))

        if len(self.mblog_cache) > MAX_MBLOG_CACHE:
            del self.mblog_cache[0:len(self.mblog_cache-MAX_MBLOG_CACHE)]
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid, panels.MicroblogPanel):
                self.FillMicroblogPanel(lib_wid)
        self.initialised = True # initialisation phase is finished here
        for event_data in self.init_cache: # so we have to send all the cached events
            self._personalEventCb(*event_data)
        del self.init_cache

    def _getProfileJidCB(self, jid):
        self.whoami = JID(jid)
        #we can now ask our status
        self.bridge.call('getPresenceStatus', self._getPresenceStatusCb)
        #the rooms where we are
        self.bridge.call('getRoomsJoined', self._getRoomsJoinedCb)
        #and if there is any subscription request waiting for us
        self.bridge.call('getWaitingSub', self._getWaitingSubCb)
        #we fill the panels already here
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid, panels.MicroblogPanel):
                if lib_wid.accept_all():
                    self.bridge.call('getMassiveLastMblogs', lib_wid.massiveInsert, 'ALL', [], 10)
                else:
                    self.bridge.call('getMassiveLastMblogs', lib_wid.massiveInsert, 'GROUP', lib_wid.accepted_groups, 10)
    
        #we ask for our own microblogs:
        self.bridge.call('getMassiveLastMblogs', self._ownBlogsFills, 'JID', [self.whoami.bare], 10)

    ## Signals callbacks ##

    def _personalEventCb(self, sender, event_type, data):
        if not self.initialised:
            self.init_cache.append((sender, event_type, data))
            return
        if event_type == "MICROBLOG":
            if not 'content' in data:
                print ("WARNING: No content found in microblog data")
                return
            if 'groups' in data:
                _groups = set(data['groups'].split() if data['groups'] else [])
            else:
                _groups=None
            mblog_entry = MicroblogItem(data)
        
            for lib_wid in self.libervia_widgets:
                if isinstance(lib_wid, panels.MicroblogPanel):
                    self.addBlogEntry(lib_wid, sender, _groups, mblog_entry) 

            if sender == self.whoami.bare:
                self.mblog_cache.append((_groups, mblog_entry))
                if len(self.mblog_cache) > MAX_MBLOG_CACHE:
                    del self.mblog_cache[0:len(self.mblog_cache-MAX_MBLOG_CACHE)]

    def addBlogEntry(self, mblog_panel, sender, _groups, mblog_entry):
        """Check if an entry can go in MicroblogPanel and add to it
        @param mblog_panel: MicroblogPanel instance
        @param sender: jid of the entry sender
        @param _groups: groups which can receive this entry
        @param mblog_entry: MicroblogItem instance"""
        if mblog_entry.type == "comment" or mblog_panel.isJidAccepted(sender) or (_groups == None and self.whoami and sender == self.whoami.bare) \
           or (_groups and _groups.intersection(mblog_panel.accepted_groups)):
            mblog_panel.addEntry(mblog_entry)

    def FillMicroblogPanel(self, mblog_panel):
        """Fill a microblog panel with entries in cache
        @param mblog_panel: MicroblogPanel instance
        """
        #XXX: only our own entries are cached
        for cache_entry in self.mblog_cache:
            _groups, mblog_entry = cache_entry 
            self.addBlogEntry(mblog_panel, self.whoami.bare, *cache_entry)

    def getEntityMBlog(self, entity):
        print "geting mblog for entity [%s]" % (entity,)
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid, panels.MicroblogPanel):
                if lib_wid.isJidAccepted(entity):
                    self.bridge.call('getMassiveLastMblogs', lib_wid.massiveInsert, 'JID', [entity], 10)


    def _newMessageCb(self, from_jid, msg, msg_type, to_jid):
        _from = JID(from_jid)
        _to = JID(to_jid)
        showed = False
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and (lib_wid.target.bare == _from.bare or lib_wid.target.bare == _to.bare):
                lib_wid.printMessage(_from, msg)
                showed = True
        if not showed:
            #The message has not been showed, we must indicate it
            other = _to if _from.bare == self.whoami.bare else _from
            self.contact_panel.setContactMessageWaiting(other.bare, True)
        
    def _presenceUpdateCb(self, entity, show, priority, statuses):
        _entity = JID(entity)
        #XXX: QnD way to get our status
        if self.whoami and self.whoami.bare == _entity.bare and statuses:
            self.status_panel.changeStatus(statuses.values()[0])
        if (not self.whoami or self.whoami.bare != _entity.bare):
            self.contact_panel.setConnected(_entity.bare, _entity.resource, show, priority, statuses)

    def _roomJoinedCb(self, room_jid, room_nicks, user_nick):
        _target = JID(room_jid)
        self.room_list.add(_target)
        chat_panel = panels.ChatPanel(self, _target, type_='group')
        chat_panel.setUserNick(user_nick)
        if _target.node.startswith('sat_tarot_'): #XXX: it's not really beautiful, but it works :)
            self.addTab(chat_panel, "Tarot")
        elif _target.node.startswith('sat_radiocol_'):
            self.addTab(chat_panel, "Radio collective")
        else:
            self.addTab(chat_panel, _target.node)
        chat_panel.setPresents(room_nicks)
        chat_panel.historyPrint()

    def _roomUserJoinedCb(self, room_jid_s, user_nick, user_data):
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                lib_wid.userJoined(user_nick, user_data)

    def _roomUserLeftCb(self, room_jid_s, user_nick, user_data):
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                lib_wid.userLeft(user_nick, user_data)
    
    def _tarotGameStartedCb(self, room_jid_s, referee, players):
        print ("Tarot Game Started \o/")
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                lib_wid.startGame("Tarot", referee, players)

    def _tarotGameGenericCb(self, event_name, room_jid_s, args):
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                getattr(lib_wid.getGame("Tarot"), event_name)(*args) 

    def _radioColStartedCb(self, room_jid_s, referee):
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                lib_wid.startGame("RadioCol", referee)

    def _radioColGenericCb(self, event_name, room_jid_s, args):
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid,panels.ChatPanel) and lib_wid.type == 'group' and lib_wid.target.bare == room_jid_s:
                getattr(lib_wid.getGame("RadioCol"), event_name)(*args) 


    def _getPresenceStatusCb(self, presence_data):
        for entity in presence_data:
            for resource in presence_data[entity]:
                args = presence_data[entity][resource]
                self._presenceUpdateCb("%s/%s" % (entity, resource), *args)

    def _getRoomsJoinedCb(self, room_data):
        for room in room_data:
            self._roomJoinedCb(*room)

    def _getWaitingSubCb(self, waiting_sub):
        for sub in waiting_sub:
            self._subscribeCb(waiting_sub[sub], sub)

    def _subscribeCb(self, sub_type, entity):
        if sub_type == 'subscribed':
            dialog.InfoDialog('Subscription confirmation', 'The contact <b>%s</b> has added you to his/her contact list' % html_sanitize(entity)).show()
            self.getEntityMBlog(entity)

        elif sub_type == 'unsubscribed':
            dialog.InfoDialog('Subscription refusal', 'The contact <b>%s</b> has refused to add you in his/her contact list' % html_sanitize(entity)).show()
            #TODO: remove microblogs from panels

        elif sub_type == 'subscribe':
            #The user want to subscribe to our presence
            _dialog = None
            msg = HTML('The contact <b>%s</b> want to add you in his/her contact list, do you accept ?' % html_sanitize(entity))
            
            def ok_cb(ignore):
                self.bridge.call('subscription', None, "subscribed", entity, '', _dialog.getSelectedGroups())
            def cancel_cb(ignore):
                self.bridge.call('subscription', None, "unsubscribed", entity, '', '')
    
            _dialog = dialog.GroupSelector([msg], self.contact_panel.getGroups(), [], ok_cb, cancel_cb)
            _dialog.setHTML('<b>Add contact request</b>')
            _dialog.show()

    def _contactDeletedCb(self, entity):
        self.contact_panel.removeContact(entity)

    def _newContactCb(self, contact, attributes, groups):
        self.contact_panel.updateContact(contact, attributes, groups)

    def _entityDataUpdatedCb(self, entity_jid_s, key, value):
        if key == "avatar":
            avatar = '/avatars/%s' % value

            self.avatars_cache[entity_jid_s] = avatar

            for lib_wid in self.libervia_widgets:
                if isinstance(lib_wid, panels.MicroblogPanel):
                    if lib_wid.isJidAccepted(entity_jid_s) or (self.whoami and entity_jid_s == self.whoami.bare):
                        lib_wid.updateValue('avatar', entity_jid_s, avatar)

    def _chatStateReceivedCb(self, from_jid_s, state, profile):
        """Callback when a new chat state is received.
        @param from_jid_s: JID from the contact who sent his state
        @param state: new state
        @profile: current profile
        """
        _from = JID(from_jid_s).bare if from_jid_s != "@ALL@" else from_jid_s
        for lib_wid in self.libervia_widgets:
            if isinstance(lib_wid, panels.ChatPanel):
                win_from = lib_wid.target.bare
                good_win = win_from == _from or _from == "@ALL@"
                if (good_win and lib_wid.type == 'one2one'):
                    if state:
                        lib_wid.setTitle(win_from + " (" + state + ")")
                    else:
                        lib_wid.setTitle(win_from)
                    # start to send "composing" state from now
                    lib_wid.state_machine.started = True
                elif (lib_wid.type == 'group'):
                    # TODO: chat state notification for groupchat
                    pass

if __name__ == '__main__':
    pyjd.setup("http://localhost:8080/libervia.html")
    app = SatWebFrontend()
    app.onModuleLoad()
    pyjd.run()