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

"""
jp: a SAT command line tool
Copyright (C) 2009, 2010, 2011, 2012  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/>.
"""

from __future__ import with_statement

#consts
name = u"jp"
about = name+u""" v%s (c) Jérôme Poisson (aka Goffi) 2009, 2010, 2011, 2012

---
"""+name+u""" Copyright (C) 2009, 2010, 2011, 2012  Jérôme Poisson (aka Goffi)
This program comes with ABSOLUTELY NO WARRANTY;
This is free software, and you are welcome to redistribute it
under certain conditions.
---

This software is a command line tool for jabber
Get the latest version at http://www.goffi.org
"""

global pbar_available
pbar_available = True #checked before using ProgressBar

### logging ###
import logging
from logging import debug, info, error, warning
logging.basicConfig(level=logging.DEBUG,
                    format='%(message)s')
###

import gettext
gettext.install('jp', "i18n", unicode=True)

import sys
import os
from os.path import abspath, basename, dirname
from optparse import OptionParser
from sat.tools.jid import JID
import gobject
from sat_frontends.bridge.DBus import DBusBridgeFrontend,BridgeExceptionNoService
import tarfile
import tempfile
import shutil
import unicodedata
try:
    from progressbar import ProgressBar, Percentage, Bar, ETA, FileTransferSpeed
except ImportError, e:
        info (_('ProgressBar not available, please download it at http://pypi.python.org/pypi/progressbar'))
        info (_('Progress bar deactivated\n--\n'))
        pbar_available=False




class JP():
    def __init__(self):
        try:
            self.bridge=DBusBridgeFrontend()
        except BridgeExceptionNoService:
            print(_(u"Can't connect to SàT backend, are you sure it's launched ?"))
            import sys
            sys.exit(1)
        self.transfer_data = None

    def check_options(self):
        """Check command line options"""
        usage=_("""
        %prog [options] [FILE1 FILE2 ...] JID
        %prog -w [options] [JID1 JID2 ...]

        %prog --help for options list
        """)
        version = unicode(self.bridge.getVersion())
        parser = OptionParser(usage=usage,version=about % version)

        parser.add_option("-p", "--profile", action="store", type="string", default='@DEFAULT@',
                    help=_("Use PROFILE profile key (default: %default)"))
        parser.add_option("-b", "--bz2", action="store_true", default=False,
                    help=_("Make a bzip2 tarball"))
        parser.add_option("-w", "--wait-file", action="store_true", default=False,
                    help=_("Wait for a file to be sent by a contact"))
        parser.add_option("-m", "--multiple", action="store_true", default=False,
                    help=_("Accept multiple files (you'll have to stop manually)"))
        parser.add_option("-f", "--force", action="store_true", default=False,
                    help=_("Force overwritting of existing files"))
        parser.add_option("-g", "--progress", action="store_true", default=False,
                    help=_("Show progress bar"))
        parser.add_option("-s", "--separate", action="store_true", default=False,
                    help=_("Separate xmpp messages: send one message per line instead of one message alone."))
        parser.add_option("-n", "--new-line", action="store_true", default=False,
                    help=_("Add a new line at the beginning of the input (usefull for ascii art ;))"))
        parser.add_option("--connect", action="store_true", default=False,
                    help=_("Connect the profile before doing anything else"))
        parser.add_option("--pipe-in", action="store_true", default=False,
                    help=_("Wait for the reception of a pipe stream"))
        parser.add_option("--pipe-out", action="store_true", default=False,
                    help=_("Pipe a stream out "))

        (self.options, args) = parser.parse_args()

        if len(args) < 1 and not self.options.wait_file:
            parser.error(_("You must specify the destination JID (Jabber ID)").encode('utf-8'))

        if self.options.wait_file or self.options.pipe_in:
            #several jid
            self.dest_jids = [arg.decode('utf-8') for arg in args]
        else:
            #one dest_jid, other args are files
            self.dest_jid = JID(args[-1].decode('utf-8'))
            self.files = args[:-1]

        if not pbar_available and self.options.progress:
            self.options.progress = False
            error (_("Option progress is not available, deactivated."))

        if self.options.progress or self.options.wait_file or self.options.connect or self.options.pipe_in:
            self.start_loop = True  #We have to use loop for these options
        else:
            self.start_loop = False
        
            
        return args

    def check_jabber_status(self):
        """Check that jabber status is allright"""
        def cantConnect():
            error(_(u"Can't connect profile"))
            exit(1)

        
        self.profile = self.bridge.getProfileName(self.options.profile)
        if not self.profile:
            error(_("The profile asked doesn't exist"))
            exit(1)

        if self.options.connect: #if connection is asked, we connect the profile
            self.bridge.asyncConnect(self.profile, self.connected, cantConnect)
            return
        elif not self.bridge.isConnected(self.profile):
            error(_(u"Profile [%(profile)s] is not connected, please connect it before using jp, or use --connect option") % { "profile": self.profile })
            exit(1)

        self.connected()

    def check_jids(self):
        """Check jids validity, transform roster name to corresponding jids"""
        names2jid = {}
        nodes2jid = {}

        for contact in self.bridge.getContacts(self.options.profile):
            _jid, attr, groups = contact
            if attr.has_key("name"):
                names2jid[attr["name"].lower()] = _jid
            nodes2jid[JID(_jid).node.lower()] = _jid

        def expandJid(jid):
            _jid = jid.lower()
            if _jid in names2jid:
                expanded = names2jid[_jid]
            elif _jid in nodes2jid:
                expanded = nodes2jid[_jid]
            else:
                expanded = jid
            return unicode(expanded)

        def check(jid):
            if not jid.is_valid:
                error (_("%s is not a valid JID !"), self.dest_jid)
                exit(1)

        try:
            self.dest_jid = expandJid(self.dest_jid)
            check(self.dest_jid)
        except AttributeError:
            pass
        try:
            for i in range(len(self.dest_jids)):
                self.dest_jids[i] = expandJid(self.dest_jids[i])
                check(self.dest_jids[i])
        except AttributeError:
            pass

    def clean_ustr(self, ustr):
        """Clean unicode string
        remove special characters from unicode string"""
        def valid_chars(unicode_source):
            for char in unicode_source:
                if unicodedata.category(char) == 'Cc' and char!='\n':
                    continue
                yield char
        return ''.join(valid_chars(ustr))


    def send_stdin(self):
        """Send incomming data on stdin to jabber contact"""
        header = "\n" if self.options.new_line else ""

        if self.options.separate:  #we send stdin in several messages
            if header:
                self.bridge.sendMessage(self.dest_jid, header, profile_key=self.profile)
            while (True):
                line = self.clean_ustr(sys.stdin.readline().decode('utf-8','ignore'))
                if not line:
                    break
                self.bridge.sendMessage(self.dest_jid, line.replace("\n",""), profile_key=self.profile)
        else:
            self.bridge.sendMessage(self.dest_jid, header + self.clean_ustr(u"".join([stream.decode('utf-8','ignore') for stream in sys.stdin.readlines()])), profile_key=self.profile)


    def pipe_out(self):
        """Create named pipe, and send stdin to it"""
        tmp_dir = tempfile.mkdtemp()
        fifopath = os.path.join(tmp_dir,"pipe_out")
        os.mkfifo(fifopath)
        self.bridge.pipeOut(self._getFullJid(self.dest_jid), fifopath, {}, profile_key=self.profile)
        with open(fifopath, 'w') as f:
            shutil.copyfileobj(sys.stdin, f)
        shutil.rmtree(tmp_dir)


    def send_files(self):
        """Send files to jabber contact"""

        for file in self.files:
            if not os.path.exists(file):
                error (_(u"File [%s] doesn't exist !") % file)
                exit(1)
            if not self.options.bz2 and os.path.isdir(file):
                error (_("[%s] is a dir ! Please send files inside or use compression") % file)
                exit(1)

        full_dest_jid = self._getFullJid(self.dest_jid)
        if self.options.bz2:
            tmpfile = (basename(self.files[0]) or basename(dirname(self.files[0])) ) + '.tar.bz2' #FIXME: tmp, need an algorithm to find a good name/path
            if os.path.exists(tmpfile):
                error (_("tmp file (%s) already exists ! Please remove it"), tmpfile)
                exit(1)
            warning(_("bz2 is an experimental option at an early dev stage, use with caution"))
            #FIXME: check free space, writting perm, tmp dir, filename (watch for OS used)
            info(_("Starting compression, please wait..."))
            sys.stdout.flush()
            bz2=tarfile.open(tmpfile, "w:bz2")
            for file in self.files:
                info(_("Adding %s"), file)
                bz2.add(file)
            bz2.close()
            info(_("OK !"))
            path = abspath(tmpfile)
            self.transfer_data = self.bridge.sendFile(full_dest_jid, path, {}, profile_key=self.profile)
        else:
            for file in self.files:
                path = abspath(file)
                self.transfer_data = self.bridge.sendFile(full_dest_jid, path, {}, profile_key=self.profile) #FIXME: show progress only for last transfer_id


    def _getFullJid(self, param_jid):
        """Return the full jid if possible (add last resource when find a bare jid"""
        _jid = JID(param_jid)
        if not _jid.resource:
            #if the resource is not given, we try to add the last known resource
            last_resource = self.bridge.getLastResource(param_jid, self.options.profile)
            if last_resource:
                return "%s/%s" % (_jid.short, last_resource)
        return param_jid


    def askConfirmation(self, confirm_id, confirm_type, data, profile):
        """CB used for file transfer, accept files depending on parameters"""
        if profile != self.profile:
            debug("Ask confirmation ignored: not our profile")
            return
        answer_data={}
        if confirm_type == "FILE_TRANSFER":
            if not self.options.wait_file:
                return
            if self.dest_jids and not JID(data['from']).short in [JID(_jid).short for _jid in self.dest_jids]:
                return #file is not sent by a filtered jid
                
            answer_data["dest_path"] = os.getcwd()+'/'+data['filename']

            if self.options.force or not os.path.exists(answer_data["dest_path"]):
                self.bridge.confirmationAnswer(confirm_id, True, answer_data, profile)
                info(_("Accepted file [%(filename)s] from %(sender)s") % {'filename':data['filename'], 'sender':data['from']})
                self.transfer_data = confirm_id
            else:
                self.bridge.confirmationAnswer(confirm_id, False, answer_data, profile)
                warning(_("Refused file [%(filename)s] from %(sender)s: a file with the same name already exist") % {'filename':data['filename'], 'sender':data['from']})
                

            if not self.options.multiple and not self.options.progress:
                #we just accept one file
                self.loop.quit()
        elif confirm_type == "PIPE_TRANSFER":
            if not self.options.pipe_in:
                return
            if self.dest_jids and not JID(data['from']).short in [JID(_jid).short for _jid in self.dest_jids]:
                return #pipe stream is not sent by a filtered jid
            
            tmp_dir = tempfile.mkdtemp()
            fifopath = os.path.join(tmp_dir,"pipe_in")
            answer_data["dest_path"] = fifopath
            os.mkfifo(fifopath)
            self.bridge.confirmationAnswer(confirm_id, True, answer_data, profile)
            with open(fifopath, 'r') as f:
                shutil.copyfileobj(f, sys.stdout)
            shutil.rmtree(tmp_dir)
            self.loop.quit()
                
                
    def actionResult(self, action_type, action_id, data, profile):
        #FIXME
        info (_("FIXME: actionResult not implemented"))

    def confirmation_reply(self):
        """Auto reply to confirmations requests"""
        #we register incoming confirmation
        self.bridge.register("askConfirmation", self.askConfirmation)
        
        #and we ask those we have missed
        for confirm_id, confirm_type, data in self.bridge.getWaitingConf(self.profile):
            self.askConfirmation(confirm_id, confirm_type, data, self.profile)

    def progressCB(self):
        if self.transfer_data:
            transfer_id = self.transfer_data
            data = self.bridge.getProgress(transfer_id, self.profile)
            if data:
                if not data['position']:
                    data['position'] = '0'
                if not self.pbar:
                    #first answer, we must construct the bar
                    self.pbar = ProgressBar(int(data['size']),[_("Progress: "),Percentage()," ",Bar()," ",FileTransferSpeed()," ",ETA()])
                    self.pbar.start()
                    
                self.pbar.update(int(data['position']))
            elif self.pbar:
                self.pbar.finish()
                if not self.options.multiple:
                    self.loop.quit()
                return False

        return True

    def go(self):
        self.check_options()
        self.check_jabber_status()
        if self.start_loop:
            self.loop = gobject.MainLoop()
            try:
                self.loop.run()
            except KeyboardInterrupt:
                info(_("User interruption: good bye"))

    def connected(self):
        """This is called when the profile is connected"""
        self.check_jids()
        if self.options.wait_file or self.options.pipe_in:
            self.confirmation_reply()
        else:
            if self.files:
                self.send_files()
            elif self.options.pipe_out:
                self.pipe_out()
            else:
                self.send_stdin()

        if self.options.progress:
            self.pbar = None
            gobject.timeout_add(10, self.progressCB)

        if self.start_loop and not self.options.progress and not self.options.wait_file and not self.options.pipe_in:
            self.loop.quit()


if __name__ == "__main__":
    jp = JP()
    jp.go()