/**
 * @license
 * Copyright (C) 2021 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 './gr-checkers-list.js';
import {computeDuration} from './util.js';

class ChecksFetcher {
  constructor(plugin) {
    this.plugin = plugin;
    this.restApi = plugin.restApi();
  }

  async fetchCurrent() {
    return this.fetch(this.changeNumber, this.patchsetNumber);
  }

  async fetch(changeData) {
    const {changeNumber, patchsetNumber} = changeData;
    this.changeNumber = changeNumber;
    this.patchsetNumber = patchsetNumber;
    const checks = await this.apiGet('?o=CHECKER');
    return {
      responseCode: 'OK',
      actions: [{
        name: 'Configure Checkers',
        callback: () => this.plugin.popup('gr-checkers-list'),
      }],
      runs: checks.map(check => this.convert(check)),
    };
  }

  async apiGet(suffix) {
    return this.restApi.get(
        '/changes/' + this.changeNumber + '/revisions/' + this.patchsetNumber +
        '/checks' + suffix);
  }

  async apiPost(suffix) {
    return this.restApi.post(
        '/changes/' + this.changeNumber + '/revisions/' + this.patchsetNumber +
        '/checks' + suffix);
  }

  /**
   * Converts a Checks Plugin CheckInfo object into a Checks API Run object.
   */
  convert(check) {
    let status = 'RUNNABLE';
    if (check.state === 'RUNNING' || check.state === 'SCHEDULED') {
      status = 'RUNNING';
    } else if (check.state === 'FAILED' || check.state === 'SUCCESSFUL') {
      status = 'COMPLETED';
    }
    const run = {
      checkName: check.checker_name,
      checkDescription: check.checker_description,
      externalId: check.checker_uuid,
      status,
    };
    if (check.started) run.startedTimestamp = new Date(check.started);
    if (check.finished) run.finishedTimestamp = new Date(check.finished);
    if (status === 'RUNNING') {
      run.statusDescription = check.message;
      if (check.url) {
        run.statusLink = check.url;
      }
    } else if (check.state === 'SUCCESSFUL') {
      run.statusDescription =
          check.message || `Passed (${computeDuration(check)})`;
      if (check.url) {
        run.statusLink = check.url;
      }
    } else if (check.state === 'FAILED') {
      run.results = [{
        category: 'ERROR',
        summary: check.message || `Failed (${computeDuration(check)})`,
      }];
      if (check.url) {
        run.results[0].links = [{
          url: check.url,
          primary: true,
          icon: 'EXTERNAL',
        }];
      }
    }
    if (status !== 'RUNNING') {
      run.actions = [{
        name: 'Run',
        primary: true,
        callback: () => this.run(check.checker_uuid),
      }];
    }
    return run;
  }

  run(uuid) {
    return this.apiPost('/' + uuid + '/rerun')
        .then(_ => {
          return {message: 'Run triggered.', shouldReload: true};
        })
        .catch(e => {
          return {message: `Triggering the run failed: ${e.message}`};
        });
  }
}

Gerrit.install(plugin => {
  const checksApi = plugin.checks();
  const fetcher = new ChecksFetcher(plugin);
  checksApi.register({
    fetch: data => fetcher.fetch(data),
  });
});