// Copyright (C) 2020 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use size file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import m from 'mithril';

import {CallsiteInfo} from '../common/state';

import {globals} from './globals';

interface CpuProfileDetailsPanelAttrs {}

export class CpuProfileDetailsPanel
  implements m.ClassComponent<CpuProfileDetailsPanelAttrs>
{
  view() {
    const sampleDetails = globals.cpuProfileDetails;
    const header = m(
      '.details-panel-heading',
      m('h2', `CPU Profile Sample Details`),
    );
    if (sampleDetails.id === undefined) {
      return m('.details-panel', header);
    }

    return m(
      '.details-panel',
      header,
      m('table', this.getStackText(sampleDetails.stack)),
    );
  }

  getStackText(stack?: CallsiteInfo[]): m.Vnode[] {
    if (!stack) return [];

    const result = [];
    for (let i = stack.length - 1; i >= 0; --i) {
      result.push(m('tr', m('td', stack[i].name), m('td', stack[i].mapping)));
    }

    return result;
  }
}