/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This Source Code Form is "Incompatible With Secondary Licenses", as
 * defined by the Mozilla Public License, v. 2.0. */

var Dom = YAHOO.util.Dom;
var Event = YAHOO.util.Event;

Event.onDOMReady(function() {
  YAHOO.bugzilla.instantSearch.onInit();
  if (YAHOO.bugzilla.instantSearch.getContent().length >= 4) {
    YAHOO.bugzilla.instantSearch.doSearch(YAHOO.bugzilla.instantSearch.getContent());
  } else {
    YAHOO.bugzilla.instantSearch.reset();
  }
  Dom.get('content').focus();
});

YAHOO.bugzilla.instantSearch = {
  counter: 0,
  dataTable: null,
  dataTableColumns: null,
  elContent: null,
  elList: null,
  currentSearchQuery: '',
  currentSearchProduct: '',

  onInit: function() {
    YAHOO.util.Connect.setDefaultPostHeader('application/json; charset=UTF-8');

    this.elContent = Dom.get('content');
    this.elList = Dom.get('results');

    Event.addListener(this.elContent, 'keyup', this.onContentKeyUp);
    Event.addListener(Dom.get('product'), 'change', this.onProductChange);
  },

  setLabels: function(labels) {
    this.dataTableColumns = [
      { key: "id", label: labels.id, formatter: this.formatId },
      { key: "summary", label: labels.summary, formatter: "text" },
      { key: "component", label: labels.component, formatter: "text" },
      { key: "status", label: labels.status, formatter: this.formatStatus },
    ];
  },

  initDataTable: function() {
    var dataSource = new YAHOO.util.XHRDataSource("jsonrpc.cgi");
    dataSource.connTimeout = 15000;
    dataSource.connMethodPost = true;
    dataSource.connXhrMode = "cancelStaleRequests";
    dataSource.maxCacheEntries = 3;
    dataSource.responseSchema = {
      resultsList : "result.bugs",
      metaFields : { error: "error", jsonRpcId: "id" }
    };
    // DataSource can't understand a JSON-RPC error response, so
    // we have to modify the result data if we get one.
    dataSource.doBeforeParseData = 
      function(oRequest, oFullResponse, oCallback) {
        if (oFullResponse.error) {
          oFullResponse.result = {};
          oFullResponse.result.bugs = [];
          if (console)
            console.error("JSON-RPC error:", oFullResponse.error);
        }
        return oFullResponse;
      };
    dataSource.subscribe('dataErrorEvent', 
      function() {
        YAHOO.bugzilla.instantSearch.currentSearchQuery = '';
      }
    );

    this.dataTable = new YAHOO.widget.DataTable(
      'results', 
      this.dataTableColumns, 
      dataSource, 
      { 
        initialLoad: false,
        MSG_EMPTY: 'No matching bugs found.',
        MSG_ERROR: 'An error occurred while searching for bugs, please try again.'
      }
    );
  },

  formatId: function(el, oRecord, oColumn, oData) {
    el.innerHTML = '<a href="show_bug.cgi?id=' + oData + '" target="_blank">' + oData + '</a>';
  },

  formatStatus: function(el, oRecord, oColumn, oData) {
    var resolution = oRecord.getData('resolution');
    var bugStatus = display_value('bug_status', oData);
    if (resolution) {
      el.innerHTML = bugStatus + ' ' + display_value('resolution', resolution);
    } else {
      el.innerHTML = bugStatus;
    }
  },

  reset: function() {
    Dom.addClass(this.elList, 'hidden');
    this.elList.innerHTML = '';
    this.currentSearchQuery = '';
    this.currentSearchProduct = '';
  },

  onContentKeyUp: function(e) {
    clearTimeout(YAHOO.bugzilla.instantSearch.lastTimeout);
    YAHOO.bugzilla.instantSearch.lastTimeout = setTimeout(function() {
      YAHOO.bugzilla.instantSearch.doSearch(YAHOO.bugzilla.instantSearch.getContent()) },
      600);
  },

  onProductChange: function(e) {
    YAHOO.bugzilla.instantSearch.doSearch(YAHOO.bugzilla.instantSearch.getContent());
  },

  doSearch: function(query) {
    if (query.length < 4)
      return;

    // don't query if we already have the results (or they are pending)
    var product = Dom.get('product').value;
    if (YAHOO.bugzilla.instantSearch.currentSearchQuery == query &&
        YAHOO.bugzilla.instantSearch.currentSearchProduct == product)
      return;
    YAHOO.bugzilla.instantSearch.currentSearchQuery = query;
    YAHOO.bugzilla.instantSearch.currentSearchProduct = product;

    // initialise the datatable as late as possible
    YAHOO.bugzilla.instantSearch.initDataTable();

    try {
      // run the search
      Dom.removeClass(YAHOO.bugzilla.instantSearch.elList, 'hidden');

      YAHOO.bugzilla.instantSearch.dataTable.showTableMessage(
        'Searching...&nbsp;&nbsp;&nbsp;' +
        '<img src="extensions/GuidedBugEntry/web/images/throbber.gif"' + 
        ' width="16" height="11">',
        YAHOO.widget.DataTable.CLASS_LOADING
      );
      var jsonObject = {
        version: "1.1",
        method: "Bug.possible_duplicates",
        id: ++YAHOO.bugzilla.instantSearch.counter,
        params: {
          product: YAHOO.bugzilla.instantSearch.getProduct(),
          summary: query,
          limit: 20,
          include_fields: [ "id", "summary", "status", "resolution", "component" ],
          Bugzilla_api_token : (BUGZILLA.api_token ? BUGZILLA.api_token : '')
        }
      };

      YAHOO.bugzilla.instantSearch.dataTable.getDataSource().sendRequest(
        YAHOO.lang.JSON.stringify(jsonObject), 
        {
          success: YAHOO.bugzilla.instantSearch.onSearchResults,
          failure: YAHOO.bugzilla.instantSearch.onSearchResults,
          scope: YAHOO.bugzilla.instantSearch.dataTable,
          argument: YAHOO.bugzilla.instantSearch.dataTable.getState() 
        }
      );

    } catch(err) {
      if (console)
        console.error(err.message);
    }
  },

  onSearchResults: function(sRequest, oResponse, oPayload) {
    YAHOO.bugzilla.instantSearch.dataTable.onDataReturnInitializeTable(sRequest, oResponse, oPayload);
  },

  getContent: function() {
    var content = YAHOO.lang.trim(this.elContent.value);
    // work around chrome bug
    if (content == YAHOO.bugzilla.instantSearch.elContent.getAttribute('placeholder')) {
      return '';
    } else {
      return content;
    }
  },

  getProduct: function() {
    var result = [];
    var name = Dom.get('product').value;
    result.push(name);
    if (products[name] && products[name].related) {
      for (var i = 0, n = products[name].related.length; i < n; i++) {
        result.push(products[name].related[i]);
      }
    }
    return result;
  }

};