# This file is part of Buildbot.  Buildbot is free software: you can
# redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, version 2.
#
# 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members


import time, urllib
from twisted.web import html
from twisted.web.util import Redirect
from twisted.web.error import NoResource
from twisted.internet import defer

from buildbot.status.web.base import HtmlResource, abbreviate_age, \
    BuildLineMixin, ActionResource, path_to_slave, path_to_authfail
from buildbot import util

class ShutdownActionResource(ActionResource):

    def __init__(self, slave):
        self.slave = slave
        self.action = "gracefulShutdown"

    @defer.deferredGenerator
    def performAction(self, request):
        d = self.getAuthz(request).actionAllowed(self.action,
                                                 request,
                                                 self.slave)
        wfd = defer.waitForDeferred(d)
        yield wfd
        res = wfd.getResult()

        url = None
        if res:
            self.slave.setGraceful(True)
            url = path_to_slave(request, self.slave)
        else:
            url = path_to_authfail(request)
        yield url

# /buildslaves/$slavename
class OneBuildSlaveResource(HtmlResource, BuildLineMixin):
    addSlash = False
    def __init__(self, slavename):
        HtmlResource.__init__(self)
        self.slavename = slavename

    def getPageTitle(self, req):
        return "Buildbot: %s" % self.slavename

    def getChild(self, path, req):
        s = self.getStatus(req)
        slave = s.getSlave(self.slavename)
        if path == "shutdown":
            return ShutdownActionResource(slave)
        return Redirect(path_to_slave(req, slave))

    def content(self, request, ctx):        
        s = self.getStatus(request)
        slave = s.getSlave(self.slavename)
        
        my_builders = []
        for bname in s.getBuilderNames():
            b = s.getBuilder(bname)
            for bs in b.getSlaves():
                if bs.getName() == self.slavename:
                    my_builders.append(b)

        # Current builds
        current_builds = []
        for b in my_builders:
            for cb in b.getCurrentBuilds():
                if cb.getSlavename() == self.slavename:                    
                    current_builds.append(self.get_line_values(request, cb))

        try:
            max_builds = int(request.args.get('numbuilds')[0])
        except:
            max_builds = 10
           
        recent_builds = []    
        n = 0
        for rb in s.generateFinishedBuilds(builders=[b.getName() for b in my_builders]):
            if rb.getSlavename() == self.slavename:
                n += 1
                recent_builds.append(self.get_line_values(request, rb))
                if n > max_builds:
                    break

        # connects over the last hour
        slave = s.getSlave(self.slavename)
        connect_count = slave.getConnectCount()

        ctx.update(dict(slave=slave,
                        slavename = self.slavename,  
                        current = current_builds, 
                        recent = recent_builds, 
                        shutdown_url = request.childLink("shutdown"),
                        authz = self.getAuthz(request),
                        this_url = "../../../" + path_to_slave(request, slave),
                        access_uri = slave.getAccessURI()),
                        admin = unicode(slave.getAdmin() or '', 'utf-8'),
                        host = unicode(slave.getHost() or '', 'utf-8'),
                        slave_version = slave.getVersion(),
                        show_builder_column = True,
                        connect_count = connect_count)
        template = request.site.buildbot_service.templates.get_template("buildslave.html")
        data = template.render(**ctx)
        return data

# /buildslaves
class BuildSlavesResource(HtmlResource):
    pageTitle = "BuildSlaves"
    addSlash = True

    def content(self, request, ctx):
        s = self.getStatus(request)

        #?no_builders=1 disables build column
        show_builder_column = not (request.args.get('no_builders', '0')[0])=='1'
        ctx['show_builder_column'] = show_builder_column

        used_by_builder = {}
        for bname in s.getBuilderNames():
            b = s.getBuilder(bname)
            for bs in b.getSlaves():
                slavename = bs.getName()
                if slavename not in used_by_builder:
                    used_by_builder[slavename] = []
                used_by_builder[slavename].append(bname)

        slaves = ctx['slaves'] = []
        for name in util.naturalSort(s.getSlaveNames()):
            info = {}
            slaves.append(info)
            slave = s.getSlave(name)
            slave_status = s.botmaster.slaves[name].slave_status
            info['running_builds'] = len(slave_status.getRunningBuilds())
            info['link'] = request.childLink(urllib.quote(name,''))
            info['name'] = name

            if show_builder_column:
                info['builders'] = []
                for b in used_by_builder.get(name, []):
                    info['builders'].append(dict(link=request.childLink("../builders/%s" % b), name=b))
                                        
            info['version'] = slave.getVersion()
            info['connected'] = slave.isConnected()
            info['connectCount'] = slave.getConnectCount()
            
            info['admin'] = unicode(slave.getAdmin() or '', 'utf-8')
            last = slave.lastMessageReceived()
            if last:
                info['last_heard_from_age'] = abbreviate_age(time.time() - last)
                info['last_heard_from_time'] = time.strftime("%Y-%b-%d %H:%M:%S",
                                                            time.localtime(last))

        template = request.site.buildbot_service.templates.get_template("buildslaves.html")
        data = template.render(**ctx)
        return data

    def getChild(self, path, req):
        try:
            self.getStatus(req).getSlave(path)
            return OneBuildSlaveResource(path)
        except KeyError:
            return NoResource("No such slave '%s'" % html.escape(path))
