/** @babel */

import etch from 'etch';
import IncompatiblePackagesComponent from '../lib/incompatible-packages-component';

describe('IncompatiblePackagesComponent', () => {
  let packages, etchScheduler;

  beforeEach(() => {
    etchScheduler = etch.getScheduler();

    packages = [
      {
        name: 'incompatible-1',
        isCompatible() {
          return false;
        },
        rebuild: function() {
          return new Promise(resolve => (this.resolveRebuild = resolve));
        },
        getBuildFailureOutput() {
          return null;
        },
        path: '/Users/joe/.atom/packages/incompatible-1',
        metadata: {
          repository: 'https://github.com/atom/incompatible-1',
          version: '1.0.0'
        },
        incompatibleModules: [
          { name: 'x', version: '1.0.0', error: 'Expected version X, got Y' },
          { name: 'y', version: '1.0.0', error: 'Expected version X, got Z' }
        ]
      },
      {
        name: 'incompatible-2',
        isCompatible() {
          return false;
        },
        rebuild() {
          return new Promise(resolve => (this.resolveRebuild = resolve));
        },
        getBuildFailureOutput() {
          return null;
        },
        path: '/Users/joe/.atom/packages/incompatible-2',
        metadata: {
          repository: 'https://github.com/atom/incompatible-2',
          version: '1.0.0'
        },
        incompatibleModules: [
          { name: 'z', version: '1.0.0', error: 'Expected version X, got Y' }
        ]
      },
      {
        name: 'compatible',
        isCompatible() {
          return true;
        },
        rebuild() {
          throw new Error('Should not rebuild a compatible package');
        },
        getBuildFailureOutput() {
          return null;
        },
        path: '/Users/joe/.atom/packages/b',
        metadata: {
          repository: 'https://github.com/atom/b',
          version: '1.0.0'
        },
        incompatibleModules: []
      }
    ];
  });

  describe('when packages have not finished loading', () => {
    it('delays rendering incompatible packages until the end of the tick', () => {
      waitsForPromise(async () => {
        let component = new IncompatiblePackagesComponent({
          getActivePackages: () => [],
          getLoadedPackages: () => packages
        });
        let { element } = component;

        expect(
          element.querySelectorAll('.incompatible-package').length
        ).toEqual(0);

        await etchScheduler.getNextUpdatePromise();

        expect(
          element.querySelectorAll('.incompatible-package').length
        ).toBeGreaterThan(0);
      });
    });
  });

  describe('when there are no incompatible packages', () => {
    it('does not render incompatible packages or the rebuild button', () => {
      waitsForPromise(async () => {
        expect(packages[2].isCompatible()).toBe(true);
        let compatiblePackages = [packages[2]];

        let component = new IncompatiblePackagesComponent({
          getActivePackages: () => compatiblePackages,
          getLoadedPackages: () => compatiblePackages
        });
        let { element } = component;

        await etchScheduler.getNextUpdatePromise();

        expect(element.querySelectorAll('.incompatible-package').length).toBe(
          0
        );
        expect(element.querySelector('button')).toBeNull();
      });
    });
  });

  describe('when some packages previously failed to rebuild', () => {
    it('renders them with failed build status and error output', () => {
      waitsForPromise(async () => {
        packages[1].getBuildFailureOutput = function() {
          return 'The build failed';
        };

        let component = new IncompatiblePackagesComponent({
          getActivePackages: () => packages,
          getLoadedPackages: () => packages
        });
        let { element } = component;

        await etchScheduler.getNextUpdatePromise();
        let packageElement = element.querySelector(
          '.incompatible-package:nth-child(2)'
        );

        expect(packageElement.querySelector('.badge').textContent).toBe(
          'Rebuild Failed'
        );
        expect(packageElement.querySelector('pre').textContent).toBe(
          'The build failed'
        );
      });
    });
  });

  describe('when there are incompatible packages', () => {
    it('renders incompatible packages and the rebuild button', () => {
      waitsForPromise(async () => {
        let component = new IncompatiblePackagesComponent({
          getActivePackages: () => packages,
          getLoadedPackages: () => packages
        });
        let { element } = component;

        await etchScheduler.getNextUpdatePromise();

        expect(
          element.querySelectorAll('.incompatible-package').length
        ).toEqual(2);
        expect(element.querySelector('button')).not.toBeNull();
      });
    });

    describe('when the "Rebuild All" button is clicked', () => {
      it("rebuilds every incompatible package, updating each package's view with status", () => {
        waitsForPromise(async () => {
          let component = new IncompatiblePackagesComponent({
            getActivePackages: () => packages,
            getLoadedPackages: () => packages
          });
          let { element } = component;
          jasmine.attachToDOM(element);

          await etchScheduler.getNextUpdatePromise();

          component.refs.rebuildButton.dispatchEvent(
            new CustomEvent('click', { bubbles: true })
          );
          await etchScheduler.getNextUpdatePromise(); // view update

          expect(component.refs.rebuildButton.disabled).toBe(true);

          expect(packages[0].resolveRebuild).toBeDefined();

          expect(
            element.querySelector('.incompatible-package:nth-child(1) .badge')
              .textContent
          ).toBe('Rebuilding');
          expect(
            element.querySelector('.incompatible-package:nth-child(2) .badge')
          ).toBeNull();

          packages[0].resolveRebuild({ code: 0 }); // simulate rebuild success
          await etchScheduler.getNextUpdatePromise(); // view update

          expect(packages[1].resolveRebuild).toBeDefined();

          expect(
            element.querySelector('.incompatible-package:nth-child(1) .badge')
              .textContent
          ).toBe('Rebuild Succeeded');
          expect(
            element.querySelector('.incompatible-package:nth-child(2) .badge')
              .textContent
          ).toBe('Rebuilding');

          packages[1].resolveRebuild({
            code: 12,
            stderr: 'This is an error from the test!'
          }); // simulate rebuild failure
          await etchScheduler.getNextUpdatePromise(); // view update

          expect(
            element.querySelector('.incompatible-package:nth-child(1) .badge')
              .textContent
          ).toBe('Rebuild Succeeded');
          expect(
            element.querySelector('.incompatible-package:nth-child(2) .badge')
              .textContent
          ).toBe('Rebuild Failed');
          expect(
            element.querySelector('.incompatible-package:nth-child(2) pre')
              .textContent
          ).toBe('This is an error from the test!');
        });
      });

      it('displays a prompt to reload Atom when the packages finish rebuilding', () => {
        waitsForPromise(async () => {
          let component = new IncompatiblePackagesComponent({
            getActivePackages: () => packages,
            getLoadedPackages: () => packages
          });
          let { element } = component;
          jasmine.attachToDOM(element);
          await etchScheduler.getNextUpdatePromise(); // view update

          component.refs.rebuildButton.dispatchEvent(
            new CustomEvent('click', { bubbles: true })
          );
          expect(packages[0].resolveRebuild({ code: 0 }));
          await new Promise(global.setImmediate);
          expect(packages[1].resolveRebuild({ code: 0 }));

          await etchScheduler.getNextUpdatePromise(); // view update

          expect(component.refs.reloadButton).toBeDefined();
          expect(element.querySelector('.alert').textContent).toMatch(/2 of 2/);

          spyOn(atom, 'reload');
          component.refs.reloadButton.dispatchEvent(
            new CustomEvent('click', { bubbles: true })
          );
          expect(atom.reload).toHaveBeenCalled();
        });
      });
    });

    describe('when the "Package Settings" button is clicked', () => {
      it('opens the settings panel for the package', () => {
        waitsForPromise(async () => {
          let component = new IncompatiblePackagesComponent({
            getActivePackages: () => packages,
            getLoadedPackages: () => packages
          });
          let { element } = component;
          jasmine.attachToDOM(element);

          await etchScheduler.getNextUpdatePromise();

          spyOn(atom.workspace, 'open');
          element
            .querySelector('.incompatible-package:nth-child(2) button')
            .dispatchEvent(new CustomEvent('click', { bubbles: true }));
          expect(atom.workspace.open).toHaveBeenCalledWith(
            'atom://config/packages/incompatible-2'
          );
        });
      });
    });
  });
});