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path: root/webapp/src/app/pages/build/build.component.ts
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import { Component, ViewEncapsulation, AfterViewChecked, ElementRef, ViewChild, OnInit, Input } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { FormControl, FormGroup, Validators, FormBuilder } from '@angular/forms';
import { CookieService } from 'ngx-cookie';

import 'rxjs/add/operator/scan';
import 'rxjs/add/operator/startWith';

import { XDSAgentService, ICmdOutput } from '../../@core-xds/services/xdsagent.service';
import { ProjectService, IProject } from '../../@core-xds/services/project.service';
import { AlertService, IAlert } from '../../@core-xds/services/alert.service';
import { SdkService } from '../../@core-xds/services/sdk.service';

@Component({
  selector: 'xds-panel-build',
  templateUrl: './build.component.html',
  styleUrls: ['./build.component.scss'],
  encapsulation: ViewEncapsulation.None,
})

export class BuildComponent implements OnInit, AfterViewChecked {
  @ViewChild('scrollOutput') private scrollContainer: ElementRef;

  // FIXME workaround of https://github.com/angular/angular-cli/issues/2034
  // should be removed with angular 5
  //  @Input() curProject: IProject;
  @Input() curProject = <IProject>null;

  public buildForm: FormGroup;
  public subpathCtrl = new FormControl('', Validators.required);
  public debugEnable = false;
  public buildIsCollapsed = false;
  public cmdOutput: string;
  public cmdInfo: string;

  private startTime: Map<string, number> = new Map<string, number>();

  constructor(
    private prjSvr: ProjectService,
    private xdsSvr: XDSAgentService,
    private fb: FormBuilder,
    private alertSvr: AlertService,
    private sdkSvr: SdkService,
    private cookie: CookieService,
  ) {
    this.cmdOutput = '';
    this.cmdInfo = '';      // TODO: to be remove (only for debug)
    this.buildForm = fb.group({
      subpath: this.subpathCtrl,
      cmdClean: ['', Validators.nullValidator],
      cmdPrebuild: ['', Validators.nullValidator],
      cmdBuild: ['', Validators.nullValidator],
      cmdPopulate: ['', Validators.nullValidator],
      cmdArgs: ['', Validators.nullValidator],
      envVars: ['', Validators.nullValidator],
    });
  }

  ngOnInit() {
    // Set default settings
    // TODO save & restore values from cookies
    this.buildForm.patchValue({
      subpath: '',
      cmdClean: 'rm -rf build',
      cmdPrebuild: 'mkdir -p build && cd build && cmake ..',
      cmdBuild: 'cd build && make',
      cmdPopulate: 'cd build && make remote-target-populate',
      cmdArgs: '',
      envVars: '',
    });

    // Command output data tunneling
    this.xdsSvr.CmdOutput$.subscribe(data => {
      this.cmdOutput += data.stdout;
      this.cmdOutput += data.stderr;
    });

    // Command exit
    this.xdsSvr.CmdExit$.subscribe(exit => {
      if (this.startTime.has(exit.cmdID)) {
        this.cmdInfo = 'Last command duration: ' + this._computeTime(this.startTime.get(exit.cmdID));
        this.startTime.delete(exit.cmdID);
      }

      if (exit && exit.code !== 0) {
        this.cmdOutput += '--- Command exited with code ' + exit.code + ' ---\n\n';
      }
    });

    this._scrollToBottom();

    // only use for debug
    this.debugEnable = (this.cookie.get('debug_build') === '1');
  }

  ngAfterViewChecked() {
    this._scrollToBottom();
  }

  reset() {
    this.cmdOutput = '';
  }

  clean() {
    this._exec(
      this.buildForm.value.cmdClean,
      this.buildForm.value.subpath,
      [],
      this.buildForm.value.envVars);
  }

  preBuild() {
    this._exec(
      this.buildForm.value.cmdPrebuild,
      this.buildForm.value.subpath,
      [],
      this.buildForm.value.envVars);
  }

  build() {
    this._exec(
      this.buildForm.value.cmdBuild,
      this.buildForm.value.subpath,
      [],
      this.buildForm.value.envVars
    );
  }

  populate() {
    this._exec(
      this.buildForm.value.cmdPopulate,
      this.buildForm.value.subpath,
      [], // args
      this.buildForm.value.envVars
    );
  }

  execCmd() {
    this._exec(
      this.buildForm.value.cmdArgs,
      this.buildForm.value.subpath,
      [],
      this.buildForm.value.envVars
    );
  }

  private _exec(cmd: string, dir: string, args: string[], env: string) {
    if (!this.curProject) {
      this.alertSvr.warning('No active project', true);
    }

    // const prjID = this.curProject.id;
    const prjID = this.prjSvr.getCurrent().id;

    this.cmdOutput += this._outputHeader();

    const sdkid = this.sdkSvr.getCurrentId();

    // Detect key=value in env string to build array of string
    const envArr = [];
    env.split(';').forEach(v => envArr.push(v.trim()));

    const t0 = performance.now();
    this.cmdInfo = 'Start build of ' + prjID + ' at ' + t0;

    this.xdsSvr.exec(prjID, dir, cmd, sdkid, args, envArr)
      .subscribe(res => {
        this.startTime.set(String(res.cmdID), t0);
      },
      err => {
        this.cmdInfo = 'Last command duration: ' + this._computeTime(t0);
        this.alertSvr.error('ERROR: ' + err);
      });
  }

  private _scrollToBottom(): void {
    try {
      this.scrollContainer.nativeElement.scrollTop = this.scrollContainer.nativeElement.scrollHeight;
    } catch (err) { }
  }

  private _computeTime(t0: number, t1?: number): string {
    const enlap = Math.round((t1 || performance.now()) - t0);
    if (enlap < 1000.0) {
      return enlap.toFixed(2) + ' ms';
    } else {
      return (enlap / 1000.0).toFixed(3) + ' seconds';
    }
  }

  private _outputHeader(): string {
    return '--- ' + new Date().toString() + ' ---\n';
  }

  private _outputFooter(): string {
    return '\n';
  }
}