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// guix-web - Web interface for GNU Guix
// Copyright © 2015  David Thompson <davet@gnu.org>
//
// 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/>.

(function() {
  var packageInfo = guix.packageInfo;
  var spinner = m(".spinner-container", m(".spinner"));

  packageInfo.view = function(ctrl) {
    var packages = ctrl.packages();
    var packageCount = (function() {
      var count = packages.length;
      var units = count > 1 ? " versions" : " version";

      return count.toString().concat(units);
    })();

    function describeInputs(inputs, description) {
      return _.isEmpty(inputs) ? [] : [
        m("dt", description),
        m("dd", m("ul", inputs.map(function(p) {
          return m("li", m("a", {
            config: m.route,
            href: "/package/".concat(p.name)
          }, p.name.concat(" ").concat(p.version)));
        })))
      ];
    }

    function describePackage(package) {
      var baseDescription = [
        m("dt", "Version"),
        m("dd", package.version),
        m("dt", "Synopsis"),
        m("dd", package.synopsis),
        m("dt", "Description"),
        m("dd", package.description),
        m("dt", "License"),
        m("dd", guix.ui.licenseList(package))
      ];
      var inputs = describeInputs(package.inputs, "Inputs");
      var nativeInputs = describeInputs(package.nativeInputs,
                                        "Native Inputs");
      var propagatedInputs = describeInputs(package.propagatedInputs,
                                            "Propagated Inputs");
      return m("li",
               m("dl", _.flatten([
                 baseDescription,
                 inputs,
                 nativeInputs,
                 propagatedInputs
               ], true)));
    }

    return guix.withLayout([
      guix.ui.headerWithBadge(ctrl.name, packageCount),
      m("ul.list-unstyled", packages.map(describePackage))
    ]);
  };
})();