// guix-web - Web interface for GNU Guix
// Copyright © 2014  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/>.

var guix = {};

guix.Packages = function() {
  return m.request({ method: "GET", url: "packages.json" });
};

guix.controller = function() {
  this.packages = guix.Packages();
  this.visiblePackages = m.prop([]);
  this.searchTerm = m.prop("");

  // All packages are visible initially
  this.packages.then(this.visiblePackages);

  this.doSearch = function() {
    var regexp = new RegExp(this.searchTerm());

    this.visiblePackages(this.packages().filter(function(package) {
      return regexp.test(package.name) ||
        regexp.test(package.synopsis);
    }));
  };
};

guix.view = function(ctrl) {
  function renderName(package) {
    var name = package.name;

    return m("a", { href: "/package/".concat(name) }, name);
  }

  function renderHomepage(package) {
    if(package.homepage) {
      return m("a", { href: package.homepage }, package.homepage);
    } else {
      return "";
    }
  }

  function renderLicense(package) {
    function licenseLink(license) {
      return m("a", { href: license.uri }, license.name);
    }

    if(_.isArray(package.license)) {
      return m("ul.list-inline", package.license.map(function(license) {
        return m("li", licenseLink(license));
      }));
    } else if(package.license) {
      return licenseLink(package.license);
    } else {
      return "";
    }
  }

  return [
    m("h2", [
      "Packages",
      m("span.badge", ctrl.visiblePackages().length)
    ]),
    m("input.form-control", {
      type: "text",
      placeholder: "Search",
      onchange: m.withAttr("value", function(value) {
        ctrl.searchTerm(value);
        ctrl.doSearch();
      }),
      value: ctrl.searchTerm()
    }),
    m("table.table", [
      m("thead", [
        m("tr", [
          ["Name",
           "Version",
           "Synopsis",
           "Home Page",
           "License"].map(function(header) {
             return m("th", header);
           })
        ])
      ]),
      m("tbody", [
        ctrl.visiblePackages().map(function(package) {
          return m("tr", [
            m("td", renderName(package)),
            m("td", package.version),
            m("td", package.synopsis),
            m("td", renderHomepage(package)),
            m("td", renderLicense(package))
          ]);
        })
      ])
    ])
  ];
};

m.module(document.getElementById("guix"), guix);