/**
 * @license
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the 'License');
 * you may not use this 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 {html} from 'lit-html';
import {css, customElement, property} from 'lit-element';
import {GrLitElement} from '../lit/gr-lit-element';
import {CheckRun, RunStatus} from '../../api/checks';
import {sharedStyles} from '../../styles/shared-styles';
import {iconForCategory} from './gr-checks-results';
import {
  compareByWorstCategory,
  worstCategory,
} from '../../services/checks/checks-util';
import {assertNever} from '../../utils/common-util';
import {
  allRuns$,
  fakeRun0,
  fakeRun1,
  fakeRun2,
  fakeRun3,
  fakeRun4,
  updateStateSetResults,
} from '../../services/checks/checks-model';

function renderRun(run: CheckRun) {
  return html`<div class="runChip ${iconClass(run)}">
    ${renderIcon(run)}
    <span>${run.checkName}</span>
  </div>`;
}

function renderIcon(run: CheckRun) {
  const icon = iconClass(run);
  if (!icon) return;
  return html`<iron-icon icon="gr-icons:${icon}" class="${icon}"></iron-icon>`;
}

function iconClass(run: CheckRun) {
  const category = worstCategory(run);
  if (category) return iconForCategory(category);
  switch (run.status) {
    case RunStatus.COMPLETED:
      return 'check-circle';
    case RunStatus.RUNNABLE:
      return 'placeholder';
    case RunStatus.RUNNING:
      return 'timelapse';
    default:
      assertNever(run.status, `Unsupported status: ${run.status}`);
  }
}

@customElement('gr-checks-runs')
export class GrChecksRuns extends GrLitElement {
  @property()
  runs: CheckRun[] = [];

  constructor() {
    super();
    this.subscribe('runs', allRuns$);
  }

  static get styles() {
    return [
      sharedStyles,
      css`
        :host {
          display: block;
          padding: var(--spacing-xl);
        }
        .statusHeader {
          padding-top: var(--spacing-l);
          text-transform: capitalize;
        }
        .runChip {
          font-weight: var(--font-weight-bold);
          border: 1px solid var(--border-color);
          border-radius: var(--border-radius);
          padding: var(--spacing-s) var(--spacing-m);
          margin-top: var(--spacing-s);
        }
        .runChip.error {
          border-left: 6px solid var(--error-foreground);
        }
        .runChip.warning {
          border-left: 6px solid var(--warning-foreground);
        }
        .runChip.info-outline {
          border-left: 6px solid var(--info-foreground);
        }
        .runChip.check-circle {
          border-left: 6px solid var(--success-foreground);
        }
        .runChip.timelapse {
          border-left: 6px solid var(--border-color);
        }
        .runnable .runChip.placeholder iron-icon {
          display: none;
        }
        .runChip.error iron-icon {
          color: var(--error-foreground);
        }
        .runChip.warning iron-icon {
          color: var(--warning-foreground);
        }
        .runChip.info-outline iron-icon {
          color: var(--info-foreground);
        }
        .runChip.check-circle iron-icon {
          color: var(--success-foreground);
        }
        .testing {
          margin-top: var(--spacing-xxl);
          color: var(--deemphasized-text-color);
        }
        .testing gr-button {
          min-width: 25px;
        }
        .testing * {
          visibility: hidden;
        }
        .testing:hover * {
          visibility: visible;
        }
      `,
    ];
  }

  render() {
    return html`
      <h2 class="heading-2">Runs</h2>
      ${this.renderSection(RunStatus.COMPLETED)}
      ${this.renderSection(RunStatus.RUNNING)}
      ${this.renderSection(RunStatus.RUNNABLE)}
      <div class="testing">
        <div>Toggle fake runs by clicking buttons:</div>
        <gr-button link @click="${this.none}">none</gr-button>
        <gr-button link @click="${() => this.toggle('f0', fakeRun0)}"
          >0</gr-button
        >
        <gr-button link @click="${() => this.toggle('f1', fakeRun1)}"
          >1</gr-button
        >
        <gr-button link @click="${() => this.toggle('f2', fakeRun2)}"
          >2</gr-button
        >
        <gr-button link @click="${() => this.toggle('f3', fakeRun3)}"
          >3</gr-button
        >
        <gr-button link @click="${() => this.toggle('f4', fakeRun4)}"
          >4</gr-button
        >
        <gr-button link @click="${this.all}">all</gr-button>
      </div>
    `;
  }

  none() {
    updateStateSetResults('f0', []);
    updateStateSetResults('f1', []);
    updateStateSetResults('f2', []);
    updateStateSetResults('f3', []);
    updateStateSetResults('f4', []);
  }

  all() {
    updateStateSetResults('f0', [fakeRun0]);
    updateStateSetResults('f1', [fakeRun1]);
    updateStateSetResults('f2', [fakeRun2]);
    updateStateSetResults('f3', [fakeRun3]);
    updateStateSetResults('f4', [fakeRun4]);
  }

  toggle(plugin: string, run: CheckRun) {
    const newRuns = this.runs.includes(run) ? [] : [run];
    updateStateSetResults(plugin, newRuns);
  }

  renderSection(status: RunStatus) {
    const runs = this.runs
      .filter(r => r.status === status)
      .sort(compareByWorstCategory);
    if (runs.length === 0) return;
    return html`
      <div class="${status.toLowerCase()}">
        <h3 class="statusHeader heading-3">${status.toLowerCase()}</h3>
        ${runs.map(renderRun)}
      </div>
    `;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'gr-checks-runs': GrChecksRuns;
  }
}