###
# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
# Copyright (C) 2014 Jesús Espino Garcia <jespinog@gmail.com>
# Copyright (C) 2014 David Barragán Merino <bameda@dbarragan.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# File: modules/base/navurl.coffee
###


taiga = @.taiga
trim = @.taiga.trim

parseNav = (data, scope) ->
    options = {}

    [name, params] = _.map(data.split(":"), trim)
    params = _.map(params.split(","), trim)

    for item in params
        [key, value] = _.map(item.split("="), trim)
        options[key] = scope.$eval(value)

    return [name, options]

formatUrl = (url, ctx={}) ->
    replacer = (match) ->
        match = trim(match, ":")
        return ctx[match] or "undefined"
    return url.replace(/(:\w+)/g, replacer)


class NavigationUrlsService extends taiga.Service
    constructor: ->
        @.urls = {}

    update: (urls) ->
        @.urls = _.merge({}, @.urls, urls or {})

    resolve: (name) ->
        return @.urls[name]


NavigationUrlsDirective = ($navurls, $auth) ->
    # Example:
    # link(tg-nav="project-backlog:project='sss',")

    link = ($scope, $el, $attrs) ->
        [name, options] = parseNav($attrs.tgNav, $scope)

        user = $auth.getUser()
        options.user = user.username if user

        url = $navurls.resolve(name)
        fullUrl = formatUrl(url, options)

        $el.attr("href", fullUrl)

    return {link: link}


module = angular.module("taigaBase")
module.service("$tgNavUrls", NavigationUrlsService)
module.directive("tgNav", ["$tgNavUrls", "$tgAuth", NavigationUrlsDirective])