"""Find the user identified by 'author', return one of the users attributes,

    default to the username attribute, None if there is no user"""

    from kallithea.model.db import User

    # attr to return from fetched user

    person_getter = lambda usr: getattr(usr, show_attr)

    # if author is already an instance use it for extraction

    if isinstance(author, User):

        return person_getter(author)

    user = user_or_none(author)

    if user is not None:

        return person_getter(user)

    # Still nothing?  Just pass back the author name if any, else the email

    return author_name(author) or email(author)

def person_by_id(id_, show_attr="username"):

    from kallithea.model.db import User

    # attr to return from fetched user

    person_getter = lambda usr: getattr(usr, show_attr)

    #maybe it's an ID ?

    if str(id_).isdigit() or isinstance(id_, int):

        id_ = int(id_)

        user = User.get(id_)

        if user is not None:

            return person_getter(user)

    return id_

def boolicon(value):

    """Returns boolean value of a value, represented as small html image of true/false

    icons

    :param value: value

    """

    if value:

        return HTML.tag('i', class_="icon-ok")

    else:

        return HTML.tag('i', class_="icon-minus-circled")

def action_parser(user_log, feed=False, parse_cs=False):

    """

    This helper will action_map the specified string action into translated

    fancy names with icons and links

    :param user_log: user log instance

    :param feed: use output for feeds (no html and fancy icons)

    :param parse_cs: parse Changesets into VCS instances

    """

    action = user_log.action

    action_params = ' '

    x = action.split(':')

    if len(x) > 1:

        action, action_params = x

    def get_cs_links():

        revs_limit = 3  # display this amount always

        revs_top_limit = 50  # show upto this amount of changesets hidden

        revs_ids = action_params.split(',')

        deleted = user_log.repository is None

        if deleted:

            return ','.join(revs_ids)

        repo_name = user_log.repository.repo_name

        def lnk(rev, repo_name):

            lazy_cs = False

            title_ = None

            url_ = '#'

            if isinstance(rev, BaseChangeset) or isinstance(rev, AttributeDict):

                if rev.op and rev.ref_name:

                    if rev.op == 'delete_branch':

                        lbl = _('Deleted branch: %s') % rev.ref_name

                    elif rev.op == 'tag':

                        lbl = _('Created tag: %s') % rev.ref_name

                    else:

                        lbl = 'Unknown operation %s' % rev.op

                else:

                    lazy_cs = True

                    lbl = rev.short_id[:8]

                    url_ = url('changeset_home', repo_name=repo_name,

                               revision=rev.raw_id)

            else:

                # changeset cannot be found - it might have been stripped or removed

                lbl = rev[:12]

                title_ = _('Changeset %s not found') % lbl

            if parse_cs:

                return link_to(lbl, url_, title=title_, class_='tooltip')

        def _get_op(rev_txt):

            _op = None

            _name = rev_txt

            if len(rev_txt.split('=>')) == 2:

                _op, _name = rev_txt.split('=>')

            return _op, _name

        revs = []

        if len(filter(lambda v: v != '', revs_ids)) > 0:

            repo = None

            for rev in revs_ids[:revs_top_limit]:

                _op, _name = _get_op(rev)

                # we want parsed changesets, or new log store format is bad

                if parse_cs:

                    try:

                        if repo is None:

                            repo = user_log.repository.scm_instance

                        _rev = repo.get_changeset(rev)

                        revs.append(_rev)

                    except ChangesetDoesNotExistError:

                        log.error('cannot find revision %s in this repo', rev)

                        revs.append(rev)

                else:

                    _rev = AttributeDict({

                        'short_id': rev[:12],

                        'raw_id': rev,

                        'message': '',

                        'op': _op,

                        'ref_name': _name

                    })

                    revs.append(_rev)

        cs_links = [" " + ', '.join(

            [lnk(rev, repo_name) for rev in revs[:revs_limit]]

        )]

        _op1, _name1 = _get_op(revs_ids[0])

        _op2, _name2 = _get_op(revs_ids[-1])

        _rev = '%s...%s' % (_name1, _name2)

        compare_view = (

            ' <div class="compare_view" data-toggle="tooltip" title="%s">'

            '<a href="%s">%s</a> </div>' % (

                _('Show all combined changesets %s->%s') % (

                    revs_ids[0][:12], revs_ids[-1][:12]

                ),

                url('changeset_home', repo_name=repo_name,

                    revision=_rev

                ),

                _('Compare view')

            )

        )

        # if we have exactly one more than normally displayed

        # just display it, takes less space than displaying

        # "and 1 more revisions"

        if len(revs_ids) == revs_limit + 1:

            cs_links.append(", " + lnk(revs[revs_limit], repo_name))

        # hidden-by-default ones

        if len(revs_ids) > revs_limit + 1:

            uniq_id = revs_ids[0]

            html_tmpl = (

                '<span> %s <a class="show_more" id="_%s" '

                'href="#more">%s</a> %s</span>'

            )

            if not feed:

                cs_links.append(html_tmpl % (

                      _('and'),

                      uniq_id, _('%s more') % (len(revs_ids) - revs_limit),

                      _('revisions')

                    )

                )

            if not feed:

                html_tmpl = '<span id="%s" style="display:none">, %s </span>'

            else:

                html_tmpl = '<span id="%s"> %s </span>'

            morelinks = ', '.join(

              [lnk(rev, repo_name) for rev in revs[revs_limit:]]

            )

            if len(revs_ids) > revs_top_limit:

                morelinks += ', ...'

            cs_links.append(html_tmpl % (uniq_id, morelinks))

        if len(revs) > 1:

            cs_links.append(compare_view)

        return ''.join(cs_links)

    def get_fork_name():

        repo_name = action_params

        url_ = url('summary_home', repo_name=repo_name)

        return _('Fork name %s') % link_to(action_params, url_)

            }

        }

    }

}

/**

 * turns objects into GET query string

 */

var _toQueryString = function(o) {

    if(typeof o !== 'object') {

        return false;

    }

    var _p, _qs = [];

    for(_p in o) {

        _qs.push(encodeURIComponent(_p) + '=' + encodeURIComponent(o[_p]));

    }

    return _qs.join('&');

};

/**

 * Load HTML into DOM using Ajax

 *

 * @param $target: load html async and place it (or an error message) here

 * @param success: success callback function

 * @param args: query parameters to pass to url

 */

function asynchtml(url, $target, success, args){

    if(args===undefined){

        args=null;

    }

    $target.html(_TM['Loading ...']).css('opacity','0.3');

    return $.ajax({url: url, data: args, headers: {'X-PARTIAL-XHR': '1'}, cache: false, dataType: 'html'})

        .done(function(html) {

                $target.html(html);

                $target.css('opacity','1.0');

                //execute the given original callback

                if (success !== undefined && success) {

                    success();

                }

            })

        .fail(function(jqXHR, textStatus, errorThrown) {

                if (textStatus == "abort")

                    return;

                $target.html('<span class="error_red">ERROR: {0}</span>'.format(textStatus));

                $target.css('opacity','1.0');

            })

        ;

};

var ajaxGET = function(url, success, failure) {

    if(failure === undefined) {

        failure = function(jqXHR, textStatus, errorThrown) {

                if (textStatus != "abort")

                    alert("Ajax GET error: " + textStatus);

            };

    }

    return $.ajax({url: url, headers: {'X-PARTIAL-XHR': '1'}, cache: false})

        .done(success)

        .fail(failure);

};

var ajaxPOST = function(url, postData, success, failure) {

    postData['_authentication_token'] = _authentication_token;

    var postData = _toQueryString(postData);

    if(failure === undefined) {

        failure = function(jqXHR, textStatus, errorThrown) {

                if (textStatus != "abort")

                    alert("Error posting to server: " + textStatus);

            };

    }

    return $.ajax({url: url, data: postData, type: 'POST', headers: {'X-PARTIAL-XHR': '1'}, cache: false})

        .done(success)

        .fail(failure);

};

/**

 * activate .show_more links

 * the .show_more must have an id that is the the id of an element to hide prefixed with _

 * the parentnode will be displayed

 */

var show_more_event = function(){

    $('.show_more').click(function(e){

        var el = e.currentTarget;

        $('#' + el.id.substring(1)).hide();

        $(el.parentNode).show();

    });

};

/**

 * activate .lazy-cs mouseover for showing changeset tooltip

 */

var show_changeset_tooltip = function(){

    $('.lazy-cs').mouseover(function(e){

        var $target = $(e.currentTarget);

        if(rid && !$target.hasClass('tooltip')){

            _show_tooltip(e, _TM['loading ...']);

            var url = pyroutes.url('changeset_info', {"repo_name": repo_name, "revision": rid});

            ajaxGET(url, function(json){

                    $target.addClass('tooltip');

                    _show_tooltip(e, json['message']);

                    _activate_tooltip($target);

                });

        }

    });

};

var _onSuccessFollow = function(target){

    var $target = $(target);

    var $f_cnt = $('#current_followers_count');

    if ($target.hasClass('follow')) {

        $target.removeClass('follow').addClass('following');

        $target.prop('title', _TM['Stop following this repository']);

        if ($f_cnt.html()) {

            var cnt = Number($f_cnt.html())+1;

            $f_cnt.html(cnt);

        }

    } else {

        $target.removeClass('following').addClass('follow');

        $target.prop('title', _TM['Start following this repository']);

        if ($f_cnt.html()) {

            var cnt = Number($f_cnt.html())-1;

            $f_cnt.html(cnt);

        }

    }

}

var toggleFollowingRepo = function(target, follows_repository_id){

    var args = 'follows_repository_id=' + follows_repository_id;

    args += '&_authentication_token=' + _authentication_token;

    $.post(TOGGLE_FOLLOW_URL, args, function(data){

            _onSuccessFollow(target);

        });

    return false;

};

var showRepoSize = function(target, repo_name){

    var args = '_authentication_token=' + _authentication_token;

    if(!$("#" + target).hasClass('loaded')){

        $("#" + target).html(_TM['Loading ...']);

        var url = pyroutes.url('repo_size', {"repo_name":repo_name});

        $.post(url, args, function(data) {

            $("#" + target).html(data);

            $("#" + target).addClass('loaded');

        });

    }

    return false;

};

/**

 * tooltips

 */

var tooltip_activate = function(){

    $(document).ready(_init_tooltip);

};

var _activate_tooltip = function($tt){

    $tt.mouseover(_show_tooltip);

    $tt.mousemove(_move_tooltip);

    $tt.mouseout(_close_tooltip);

};

var _init_tooltip = function(){

    var $tipBox = $('#tip-box');

    if(!$tipBox.length){

        $tipBox = $('<div id="tip-box"></div>');

        $(document.body).append($tipBox);

    }

    $tipBox.hide();

    $tipBox.css('position', 'absolute');

    $tipBox.css('max-width', '600px');

    _activate_tooltip($('[data-toggle="tooltip"]'));

};

var _show_tooltip = function(e, tipText, safe){

    e.stopImmediatePropagation();

    var el = e.currentTarget;

    var $el = $(el);

    if(tipText){

        // just use it

    } else if(el.tagName.toLowerCase() === 'img'){

        tipText = el.alt ? el.alt : '';

    } else {

        tipText = el.title ? el.title : '';

        safe = safe || $el.hasClass("safe-html-title");

    }