# Copyright (C) 2007-8 Brendan Cully <brendan@kublai.com>

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

"""hooks for integrating with the CIA.vc notification service

This is meant to be run as a changegroup or incoming hook. To

configure it, set the following options in your hgrc::

  [cia]

  # your registered CIA user name

  user = foo

  # the name of the project in CIA

  project = foo

  # the module (subproject) (optional)

  #module = foo

  # Append a diffstat to the log message (optional)

  #diffstat = False

  # Template to use for log messages (optional)

  #template = {desc}\\n{baseurl}{webroot}/rev/{node}-- {diffstat}

  # Style to use (optional)

  #style = foo

  # The URL of the CIA notification service (optional)

  # You can use mailto: URLs to send by email, eg

  # mailto:cia@cia.vc

  # Make sure to set email.from if you do this.

  #url = http://cia.vc/

  # print message instead of sending it (optional)

  #test = False

  # number of slashes to strip for url paths

  #strip = 0

  [hooks]

  # one of these:

  changegroup.cia = python:hgcia.hook

  #incoming.cia = python:hgcia.hook

  [web]

  # If you want hyperlinks (optional)

  baseurl = http://server/path/to/repo

"""

from mercurial.i18n import _

from mercurial.node import bin, short

from mercurial import cmdutil, patch, templater, util, mail

import email.Parser

import xmlrpclib

from xml.sax import saxutils

socket_timeout = 30 # seconds

try:

    # set a timeout for the socket so you don't have to wait so looooong

    # when cia.vc is having problems. requires python >= 2.3:

    import socket

    socket.setdefaulttimeout(socket_timeout)

except:

    pass

HGCIA_VERSION = '0.1'

HGCIA_URL = 'http://hg.kublai.com/mercurial/hgcia'

class ciamsg(object):

    """ A CIA message """

    def __init__(self, cia, ctx):

        self.cia = cia

        self.ctx = ctx

        self.url = self.cia.url

        if self.url:

            self.url += self.cia.root

    def fileelem(self, path, uri, action):

        if uri:

            uri = ' uri=%s' % saxutils.quoteattr(uri)

        return '<file%s action=%s>%s</file>' % (

            uri, saxutils.quoteattr(action), saxutils.escape(path))

    def fileelems(self):

        n = self.ctx.node()

        f = self.cia.repo.status(self.ctx.p1().node(), n)

        url = self.url or ''

        if url and url[-1] == '/':

            url = url[:-1]

        elems = []

        for path in f[0]:

            uri = '%s/diff/%s/%s' % (url, short(n), path)

            elems.append(self.fileelem(path, url and uri, 'modify'))

        for path in f[1]:

            # TODO: copy/rename ?

            uri = '%s/file/%s/%s' % (url, short(n), path)

            elems.append(self.fileelem(path, url and uri, 'add'))

        for path in f[2]:

            elems.append(self.fileelem(path, '', 'remove'))

        return '\n'.join(elems)

    def sourceelem(self, project, module=None, branch=None):

        msg = ['<source>', '<project>%s</project>' % saxutils.escape(project)]

        if module:

            msg.append('<module>%s</module>' % saxutils.escape(module))

        if branch:

            msg.append('<branch>%s</branch>' % saxutils.escape(branch))

        msg.append('</source>')

        return '\n'.join(msg)

    def diffstat(self):

        class patchbuf(object):

            def __init__(self):

                self.lines = []

                # diffstat is stupid

                self.name = 'cia'

            def write(self, data):

                self.lines.append(data)

            def close(self):

                pass

        n = self.ctx.node()

        pbuf = patchbuf()

        cmdutil.export(self.cia.repo, [n], fp=pbuf)

        return patch.diffstat(pbuf.lines) or ''

    def logmsg(self):

        diffstat = self.cia.diffstat and self.diffstat() or ''

        self.cia.ui.pushbuffer()

        self.cia.templater.show(self.ctx, changes=self.ctx.changeset(),

                                baseurl=self.cia.ui.config('web', 'baseurl'),

                                url=self.url, diffstat=diffstat,

                                webroot=self.cia.root)

        return self.cia.ui.popbuffer()

    def xml(self):

        n = short(self.ctx.node())

        src = self.sourceelem(self.cia.project, module=self.cia.module,

                              branch=self.ctx.branch())

        # unix timestamp

        dt = self.ctx.date()

        timestamp = dt[0]

        author = saxutils.escape(self.ctx.user())

        rev = '%d:%s' % (self.ctx.rev(), n)

        log = saxutils.escape(self.logmsg())

        url = self.url

        if url and url[-1] == '/':

            url = url[:-1]

        url = url and '<url>%s/rev/%s</url>' % (saxutils.escape(url), n) or ''

        msg = """

<message>

  <generator>

    <name>Mercurial (hgcia)</name>

    <version>%s</version>

    <url>%s</url>

    <user>%s</user>

  </generator>

  %s

  <body>

    <commit>

      <author>%s</author>

      <version>%s</version>

      <log>%s</log>

      %s

      <files>%s</files>

    </commit>

  </body>

  <timestamp>%d</timestamp>

</message>

""" % \

            (HGCIA_VERSION, saxutils.escape(HGCIA_URL),

            saxutils.escape(self.cia.user), src, author, rev, log, url,

            self.fileelems(), timestamp)

        return msg

class hgcia(object):

    """ CIA notification class """

    deftemplate = '{desc}'

    dstemplate = '{desc}\n-- \n{diffstat}'

    def __init__(self, ui, repo):

        self.ui = ui

        self.repo = repo

        self.ciaurl = self.ui.config('cia', 'url', 'http://cia.vc')

        self.user = self.ui.config('cia', 'user')

        self.project = self.ui.config('cia', 'project')

        self.module = self.ui.config('cia', 'module')

        self.diffstat = self.ui.configbool('cia', 'diffstat')

        self.emailfrom = self.ui.config('email', 'from')

        self.dryrun = self.ui.configbool('cia', 'test')

        self.url = self.ui.config('web', 'baseurl')

        # Default to -1 for backward compatibility

        self.stripcount = int(self.ui.config('cia', 'strip', -1))

        self.root = self.strip(self.repo.root)

        style = self.ui.config('cia', 'style')

        template = self.ui.config('cia', 'template')

        if not template:

            template = self.diffstat and self.dstemplate or self.deftemplate

        template = templater.parsestring(template, quoted=False)

        t = cmdutil.changeset_templater(self.ui, self.repo, False, None,

                                        style, False)

        t.use_template(template)

        self.templater = t

    def strip(self, path):

        '''strip leading slashes from local path, turn into web-safe path.'''

        path = util.pconvert(path)

        count = self.stripcount

        if count < 0:

            return ''

        while count > 0:

            c = path.find('/')

            if c == -1:

                break

            path = path[c + 1:]

            count -= 1

        return path

    def sendrpc(self, msg):

        srv = xmlrpclib.Server(self.ciaurl)

        res = srv.hub.deliver(msg)

        if res is not True and res != 'queued.':

            raise util.Abort(_('%s returned an error: %s') %

                             (self.ciaurl, res))

    def sendemail(self, address, data):

        p = email.Parser.Parser()

        msg = p.parsestr(data)

        msg['Date'] = util.datestr(format="%a, %d %b %Y %H:%M:%S %1%2")

        msg['To'] = address

        msg['From'] = self.emailfrom

        msg['Subject'] = 'DeliverXML'

        msg['Content-type'] = 'text/xml'

        msgtext = msg.as_string()

        self.ui.status(_('hgcia: sending update to %s\n') % address)

        mail.sendmail(self.ui, util.email(self.emailfrom),

                      [address], msgtext)

def hook(ui, repo, hooktype, node=None, url=None, **kwargs):

    """ send CIA notification """

    def sendmsg(cia, ctx):

        msg = ciamsg(cia, ctx).xml()

        if cia.dryrun:

            ui.write(msg)

        elif cia.ciaurl.startswith('mailto:'):

            if not cia.emailfrom:

                raise util.Abort(_('email.from must be defined when '

                                   'sending by email'))

            cia.sendemail(cia.ciaurl[7:], msg)

        else:

            cia.sendrpc(msg)

    n = bin(node)

    cia = hgcia(ui, repo)

    if not cia.user:

        ui.debug('cia: no user specified')

        return

    if not cia.project:

        ui.debug('cia: no project specified')

        return

    if hooktype == 'changegroup':

        start = repo.changelog.rev(n)

        end = len(repo.changelog)

        for rev in xrange(start, end):

            n = repo.changelog.node(rev)

            ctx = repo.changectx(n)

            sendmsg(cia, ctx)

    else:

        ctx = repo.changectx(n)

        sendmsg(cia, ctx)