from rhodecode.lib import diffs

from rhodecode.lib.utils import action_logger, jsonify

from rhodecode.lib.vcs.exceptions import EmptyRepositoryError

from rhodecode.lib.vcs.backends.base import EmptyChangeset

from rhodecode.lib.diffs import LimitedDiffContainer

from rhodecode.model.db import User, PullRequest, ChangesetStatus,\

    ChangesetComment

from rhodecode.model.pull_request import PullRequestModel

from rhodecode.model.meta import Session

from rhodecode.model.repo import RepoModel

from rhodecode.model.comment import ChangesetCommentsModel

from rhodecode.model.changeset_status import ChangesetStatusModel

from rhodecode.model.forms import PullRequestForm

log = logging.getLogger(__name__)

class PullrequestsController(BaseRepoController):

    @LoginRequired()

    @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',

                                   'repository.admin')

    def __before__(self):

        super(PullrequestsController, self).__before__()

        repo_model = RepoModel()

        c.users_array = repo_model.get_users_js()

        c.users_groups_array = repo_model.get_users_groups_js()

    def _get_repo_refs(self, repo, rev=None):

        """return a structure with repo's interesting changesets, suitable for

        the selectors in pullrequest.html"""

        branches = [('branch:%s:%s' % (k, v), k)

                    for k, v in repo.branches.iteritems()]

        bookmarks = [('book:%s:%s' % (k, v), k)

                     for k, v in repo.bookmarks.iteritems()]

        tags = [('tag:%s:%s' % (k, v), k)

                for k, v in repo.tags.iteritems()

                if k != 'tip']

        tip = repo.tags['tip']

        colontip = ':' + tip

        tips = [x[1] for x in branches + bookmarks + tags

                if x[0].endswith(colontip)]

        selected = 'tag:tip:%s' % tip

        special = [(selected, 'tip (%s)' % ', '.join(tips))]

        if rev:

            selected = 'rev:%s:%s' % (rev, rev)

        return [(special, _("Special")),

                (bookmarks, _("Bookmarks")),

                (branches, _("Branches")),

                (tags, _("Tags")),

                ], selected

    def _get_is_allowed_change_status(self, pull_request):

        owner = self.rhodecode_user.user_id == pull_request.user_id

        reviewer = self.rhodecode_user.user_id in [x.user_id for x in

                                                   pull_request.reviewers]

        return (self.rhodecode_user.admin or owner or reviewer)

    def show_all(self, repo_name):

        c.pull_requests = PullRequestModel().get_all(repo_name)

        c.repo_name = repo_name

        return render('/pullrequests/pullrequest_show_all.html')

    @NotAnonymous()

    def index(self):

        org_repo = c.rhodecode_db_repo

        if org_repo.scm_instance.alias != 'hg':

            log.error('Review not available for GIT REPOS')

            raise HTTPNotFound

        try:

            org_repo.scm_instance.get_changeset()

        except EmptyRepositoryError, e:

            h.flash(h.literal(_('There are no changesets yet')),

                    category='warning')

            redirect(url('summary_home', repo_name=org_repo.repo_name))

        other_repos_info = {}

        c.org_repos = []

        c.org_repos.append((org_repo.repo_name, org_repo.repo_name))

        c.default_org_repo = org_repo.repo_name

        c.org_refs, c.default_org_ref = self._get_repo_refs(org_repo.scm_instance)

        c.other_repos = []

        # add org repo to other so we can open pull request against itself

        c.other_repos.extend(c.org_repos)

        c.default_other_repo = org_repo.repo_name

        c.default_other_refs, c.default_other_ref = self._get_repo_refs(org_repo.scm_instance)

        usr_data = lambda usr: dict(user_id=usr.user_id,

                                    username=usr.username,

                                    firstname=usr.firstname,

                                        ${h.link_to(h.shorter(tag),h.url('files_home',repo_name=c.repo_name,revision=cs.raw_id))}</span>

                                    %endfor

                                </span>

                        </div>

                    </div>

                %endfor

                <div class="pagination-wh pagination-left">

                    ${c.pagination.pager('$link_previous ~2~ $link_next')}

                </div>

                </div>

            </div>

            <script type="text/javascript" src="${h.url('/js/graph.js')}"></script>

            <script type="text/javascript">

                YAHOO.util.Event.onDOMReady(function(){

                    //Monitor range checkboxes and build a link to changesets

                    //ranges

                    var checkboxes = YUD.getElementsByClassName('changeset_range');

                    var url_tmpl = "${h.url('changeset_home',repo_name=c.repo_name,revision='__REVRANGE__')}";

                    var pr_tmpl = "${h.url('pullrequest_home',repo_name=c.repo_name)}";

                    YUE.on(checkboxes,'click',function(e){

                        var clicked_cb = e.currentTarget;

                        var checked_checkboxes = [];

                        for (pos in checkboxes){

                            if(checkboxes[pos].checked){

                                checked_checkboxes.push(checkboxes[pos]);

                            }

                        }

                        if(YUD.get('open_new_pr')){

                          if(checked_checkboxes.length>0){

                            // modify open pull request to show we have selected cs

                            YUD.get('open_new_pr').innerHTML = _TM['Open new pull request for selected changesets'];

                          }else{

                            YUD.get('open_new_pr').innerHTML = _TM['Open new pull request'];

                          }

                        }

                        if(checked_checkboxes.length>0){

                            var rev_end = checked_checkboxes[0].name;

                            var rev_start = checked_checkboxes[checked_checkboxes.length-1].name;

                            var url = url_tmpl.replace('__REVRANGE__',

                                    rev_start+'...'+rev_end);

                            var link = (rev_start == rev_end)

                              	? _TM['Show selected change __S']

                            	: _TM['Show selected changes __S -> __E'];

                            link = link.replace('__S',rev_start.substr(0,6));

                            link = link.replace('__E',rev_end.substr(0,6));

                            YUD.get('rev_range_container').href = url;

                            YUD.get('rev_range_container').innerHTML = link;

                            YUD.setStyle('rev_range_container','display','');

                            YUD.setStyle('rev_range_clear','display','');

                            YUD.get('open_new_pr').href = pr_tmpl + '?rev_start={0}&rev_end={1}'.format(rev_start,rev_end);

                        }

                        else{

                            YUD.setStyle('rev_range_container','display','none');

                            YUD.setStyle('rev_range_clear','display','none');

                        }

                    });

                    YUE.on('rev_range_clear','click',function(e){

                        for (var i=0; i<checkboxes.length; i++){

                            var cb = checkboxes[i];

                            cb.checked = false;

                        }

                        YUE.preventDefault(e);

                    })

                    var msgs = YUQ('.message');

                    // get first element height

                    var el = YUQ('#graph_content .container')[0];

                    var row_h = el.clientHeight;

                    for(var i=0;i<msgs.length;i++){

                        var m = msgs[i];

                        var h = m.clientHeight;

                        var pad = YUD.getStyle(m,'padding');

                        if(h > row_h){

                            var offset = row_h - (h+12);

                            YUD.setStyle(m.nextElementSibling,'display','block');

                            YUD.setStyle(m.nextElementSibling,'margin-top',offset+'px');

                        };

                    }

                    YUE.on(YUQ('.expand'),'click',function(e){

                        var elem = e.currentTarget.parentNode.parentNode;

                        YUD.setStyle(e.currentTarget,'display','none');

                        YUD.setStyle(elem,'height','auto');

                        //redraw the graph, line_count and jsdata are global vars

                        set_canvas(100);

                        var r = new BranchRenderer();

                        r.render(jsdata,100,line_count);