import re
from xml.etree import cElementTree as ET

from osc.core import change_request_state
from osc.core import http_GET, http_PUT
from datetime import date
from osclib.comments import CommentAPI


class AcceptCommand(object):
    def __init__(self, api):
        self.api = api
        self.comment = CommentAPI(self.api.apiurl)

    def find_new_requests(self, project):
        query = "match=state/@name='new'+and+(action/target/@project='{}'+and+action/@type='submit')".format(project)
        url = self.api.makeurl(['search', 'request'], query)

        f = http_GET(url)
        root = ET.parse(f).getroot()

        rqs = []
        for rq in root.findall('request'):
            pkgs = []
            actions = rq.findall('action')
            for action in actions:
                targets = action.findall('target')
                for t in targets:
                    pkgs.append(str(t.get('package')))

            rqs.append({'id': int(rq.get('id')), 'packages': pkgs})
        return rqs

    def perform(self, project):
        """Accept the staging LETTER for review and submit to Factory /
        openSUSE 13.2 ...

        Then disable the build to disabled
        :param project: staging project we are working with

        """

        status = self.api.check_project_status(project)

        if not status:
            print('The project "{}" is not yet acceptable.'.format(project))
            return False

        meta = self.api.get_prj_pseudometa(project)
        requests = []
        packages = []
        for req in meta['requests']:
            self.api.rm_from_prj(project, request_id=req['id'], msg='ready to accept')
            requests.append(req['id'])
            packages.append(req['package'])
            msg = 'Accepting staging review for {}'.format(req['package'])
            print(msg)

        for req in requests:
            change_request_state(self.api.apiurl, str(req), 'accepted', message='Accept to %s' % self.api.opensuse)

        # A single comment should be enough to notify everybody, since
        # they are already mentioned in the comments created by
        # select/unselect
        pkg_list = ", ".join(packages)
        cmmt = 'Project "{}" accepted. The following packages have been submitted to {}: {}.'.format(project, self.api.opensuse, pkg_list)
        self.comment.add_comment(project_name=project, comment=cmmt)

        # XXX CAUTION - AFAIK the 'accept' command is expected to clean the messages here.
        self.comment.delete_from(project_name=project)

        self.api.build_switch_prj(project, 'disable')
        if self.api.item_exists(project + ':DVD'):
            self.api.build_switch_prj(project + ':DVD', 'disable')

        return True

    def accept_other_new(self):
        changed = False
        rqlist = self.find_new_requests('openSUSE:{}'.format(self.api.opensuse))
        rqlist += self.find_new_requests('openSUSE:{}:NonFree'.format(self.api.opensuse))
        for req in rqlist:
            print 'Accepting request %d: %s' % (req['id'], ','.join(req['packages']))
            change_request_state(self.api.apiurl, str(req['id']), 'accepted', message='Accept to %s' % self.api.opensuse)
            changed = True

        return changed

    def update_factory_version(self):
        """Update openSUSE (Factory, 13.2, ...)  version if is necessary."""
        project = 'openSUSE:{}'.format(self.api.opensuse)
        url = self.api.makeurl(['source', project, '_product', 'openSUSE.product'])

        product = http_GET(url).read()
        curr_version = date.today().strftime('%Y%m%d')
        new_product = re.sub(r'<version>\d{8}</version>', '<version>%s</version>' % curr_version, product)

        if product != new_product:
            http_PUT(url + '?comment=Update+version', data=new_product)