// -- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
// ++

import {Observable} from 'rxjs/Observable';
import {scopedObservable} from '../../helpers/angular-rx-utils';
import {debugLog} from '../../helpers/debug_output';
import {ContextMenuService} from '../context-menus/context-menu.service';
import {States} from '../states.service';
import {WorkPackageTableColumnsService} from '../wp-fast-table/state/wp-table-columns.service';
import {WorkPackageTableGroupByService} from '../wp-fast-table/state/wp-table-group-by.service';
import {WorkPackageTableTimelineService} from '../wp-fast-table/state/wp-table-timeline.service';
import {WorkPackageTable} from '../wp-fast-table/wp-fast-table';
import {WorkPackageTableColumns} from '../wp-fast-table/wp-table-columns';
import {KeepTabService} from '../wp-panels/keep-tab/keep-tab.service';
import {WorkPackageTimelineTableController} from './timeline/container/wp-timeline-container.directive';
import {WorkPackageResizerService} from '../wp-resizer/wp-resizer.service';
import {WpTableHoverSync} from './wp-table-hover-sync';
import {createScrollSync} from './wp-table-scroll-sync';

angular
  .module('openproject.workPackages.directives')
  .directive('wpTable', wpTable);

function wpTable(keepTab:KeepTabService,
                 PathHelper:any,
                 columnsModal:any,
                 contextMenu:ContextMenuService):any {
  return {
    restrict: 'E',
    replace: true,
    templateUrl: '/components/wp-table/wp-table.directive.html',
    scope: {
      projectIdentifier: '='
    },

    controller: WorkPackagesTableController,

    link: function(scope:ng.IScope,
                   element:ng.IAugmentedJQuery,
                   attributes:ng.IAttributes) {

      scope.workPackagePath = PathHelper.workPackagePath;

      var topMenuHeight = angular.element('#top-menu').prop('offsetHeight') || 0;
      scope.adaptVerticalPosition = function(event:JQueryEventObject) {
        event.pageY -= topMenuHeight;
      };

      // Set and keep the current details tab state remembered
      // for the open-in-details button in each WP row.
      scope.desiredSplitViewState = keepTab.currentDetailsState;
      scopedObservable(scope, keepTab.observable).subscribe((tabs:any) => {
        scope.desiredSplitViewState = tabs.details;
      });


      /** Open the settings modal */
      scope.openColumnsModal = function() {
        contextMenu.close();
        columnsModal.activate();
      };
    }
  };
}

export class WorkPackagesTableController {

  private readonly scrollSyncUpdate = createScrollSync(this.$element);

  public table:HTMLElement;

  public timeline:HTMLElement;

  constructor(private $scope:ng.IScope,
              public $element:ng.IAugmentedJQuery,
              $rootScope:ng.IRootScopeService,
              states:States,
              I18n:op.I18n,
              wpTableGroupBy:WorkPackageTableGroupByService,
              wpTableTimeline:WorkPackageTableTimelineService,
              wpTableColumns:WorkPackageTableColumnsService,
              wpResizer:WorkPackageResizerService) {
    // Clear any old table subscribers
    states.table.stopAllSubscriptions.next();

    $scope.locale = I18n.locale;

    $scope.text = {
      cancel: I18n.t('js.button_cancel'),
      noResults: {
        title: I18n.t('js.work_packages.no_results.title'),
        description: I18n.t('js.work_packages.no_results.description')
      },
      faultyQuery: {
        title: I18n.t('js.work_packages.faulty_query.title'),
        description: I18n.t('js.work_packages.faulty_query.description')
      },
      addColumns: I18n.t('js.label_add_columns'),
      tableSummary: I18n.t('js.work_packages.table.summary'),
      tableSummaryHints: [
        I18n.t('js.work_packages.table.text_inline_edit'),
        I18n.t('js.work_packages.table.text_select_hint'),
        I18n.t('js.work_packages.table.text_sort_hint')
      ].join(' ')
    };

    $scope.cancelInlineWorkPackage = function(index:number, row:any) {
      $rootScope.$emit('inlineWorkPackageCreateCancelled', index, row);
    };

    Observable.combineLatest(
      scopedObservable($scope, states.query.resource.values$()),
      scopedObservable($scope, states.table.results.values$()),
      wpTableGroupBy.observeOnScope($scope),
      wpTableColumns.observeOnScope($scope),
      wpTableTimeline.observeOnScope($scope)
    ).subscribe(([query, results, groupBy, columns, timelines]) => {

      $scope.query = query;
      $scope.rowcount = results.count;

      $scope.groupBy = groupBy.current;
      $scope.columns = columns.current;
      // Total columns = all available columns + id + checkbox
      $scope.numTableColumns = $scope.columns.length + 2;

      if ($scope.timelineVisible !== timelines.current) {
        this.scrollSyncUpdate(timelines.current);
      }
      $scope.timelineVisible = timelines.current;
    });

    // Locate table and timeline elements
    const tableAndTimeline = this.getTableAndTimelineElement();
    this.table = tableAndTimeline[0];
    this.timeline = tableAndTimeline[1];

    // Subscribe to column changes and calculate how to
    // partition the width between table and timeline
    wpTableColumns.observeOnScope($scope)
      .subscribe(c => wpResizer.changeTimelineWidthOnColumnCountChange(c, this.table, this.timeline));

    // sync hover from table to timeline
    const wpTableHoverSync = new WpTableHoverSync(this.$element);
    wpTableHoverSync.activate();
    this.$scope.$on('$destroy', () => {
      wpTableHoverSync.deactivate();
    });
  }


  public registerTimeline(controller:WorkPackageTimelineTableController, body:HTMLElement) {
    var t0 = performance.now();

    const tbody = this.$element.find('.work-package--results-tbody');
    this.$scope.table = new WorkPackageTable(this.$element[0], tbody[0], body, controller);
    this.$scope.tbody = tbody;
    controller.workPackageTable = this.$scope.table;


    var t1 = performance.now();
    debugLog('Render took ' + (t1 - t0) + ' milliseconds.');
  }

  private getTableAndTimelineElement():[HTMLElement, HTMLElement] {
    const $tableSide = this.$element.find('.work-packages-tabletimeline--table-side');
    const $timelineSide = this.$element.find('.work-packages-tabletimeline--timeline-side');

    if ($timelineSide.length === 0 || $tableSide.length === 0) {
      throw new Error('invalid state');
    }

    return [$tableSide[0], $timelineSide[0]];
  }
}