import { format } from 'date-fns';
import { DATE_FORMAT, PROCESS_STATUSES } from '../../src/config';

const filterByDate = (fromDate) => {
  cy.get('#date-picker-start-from').clear().type(format(fromDate, DATE_FORMAT));
  cy.contains('Start Range').click();
  cy.get('#date-picker-end-from').clear().type(format(fromDate, DATE_FORMAT));
  cy.contains('Start Range').click();
  cy.contains('Filter').click();
};

const updateDmnText = (oldText, newText, elementId = 'wonderful_process') => {
  // this will break if there are more elements added to the drd
  cy.get(`g[data-element-id=${elementId}]`).click().should('exist');
  cy.get('.dmn-icon-decision-table').click();
  cy.contains(oldText).clear().type(`"${newText}"`);

  // wait for a little bit for the xml to get set before saving
  // FIXME: gray out save button or add spinner while xml is loading
  cy.wait(500);
  cy.contains('Save').click();
};

const updateBpmnPythonScript = (pythonScript, elementId = 'process_script') => {
  cy.get(`g[data-element-id=${elementId}]`).click().should('exist');
  cy.contains(/^Script$/).click();
  cy.get('textarea[name="pythonScript_bpmn:script"]')
    .clear()
    .type(pythonScript);

  // wait for a little bit for the xml to get set before saving
  cy.wait(500);
  cy.contains('Save').click();
};

const updateBpmnPythonScriptWithMonaco = (
  pythonScript,
  elementId = 'process_script'
) => {
  cy.get(`g[data-element-id=${elementId}]`).click().should('exist');
  // sometimes, we click on the script task and panel doesn't update to include script task stuff. not sure why.
  cy.contains(/^Script$/).click();
  cy.contains('Launch Editor').click();
  // sometimes, Loading... appears for more than 4 seconds. not sure why.
  cy.contains('Loading...').should('not.exist');
  cy.get('.monaco-editor textarea:first')
    .click()
    .focused() // change subject to currently focused element
    // .type('{ctrl}a') // had been doing it this way, but it turns out to be flaky relative to clear()
    .clear()
    .type(pythonScript, { delay: 30 });

  cy.contains('Close').click();
  // wait for a little bit for the xml to get set before saving
  cy.wait(500);
  cy.contains('Save').click();
};

describe('process-instances', () => {
  beforeEach(() => {
    cy.login();
    cy.navigateToProcessModel(
      'Acceptance Tests Group One',
      'acceptance-tests-model-1'
    );
  });
  afterEach(() => {
    cy.logout();
  });

  it('can create a new instance and can modify', () => {
    const originalDmnOutputForKevin = 'Very wonderful';
    const newDmnOutputForKevin = 'The new wonderful';
    const dmnOutputForDan = 'pretty wonderful';

    const originalPythonScript = 'person = "Kevin"';
    const newPythonScript = 'person = "Dan"';

    const dmnFile = 'awesome_decision.dmn';
    const bpmnFile = 'process_model_one.bpmn';

    cy.contains(originalDmnOutputForKevin).should('not.exist');
    cy.runPrimaryBpmnFile();

    // Change dmn
    cy.contains(dmnFile).click();
    cy.contains(`Process Model File: ${dmnFile}`);
    updateDmnText(originalDmnOutputForKevin, newDmnOutputForKevin);

    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();

    cy.contains(dmnFile).click();
    cy.contains(`Process Model File: ${dmnFile}`);
    updateDmnText(newDmnOutputForKevin, originalDmnOutputForKevin);
    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();

    // Change bpmn
    cy.contains(bpmnFile).click();
    cy.contains(`Process Model File: ${bpmnFile}`);
    updateBpmnPythonScript(newPythonScript);
    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();

    cy.contains(bpmnFile).click();
    cy.contains(`Process Model File: ${bpmnFile}`);
    updateBpmnPythonScript(originalPythonScript);
    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();
  });

  it('can create a new instance and can modify with monaco text editor', () => {
    // leave off the ending double quote since manco adds it
    const originalPythonScript = 'person = "Kevin';
    const newPythonScript = 'person = "Mike';

    const bpmnFile = 'process_model_one.bpmn';

    // Change bpmn
    cy.contains(bpmnFile).click();
    cy.contains(`Process Model File: ${bpmnFile}`);
    updateBpmnPythonScriptWithMonaco(newPythonScript);
    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();

    cy.contains(bpmnFile).click();
    cy.contains(`Process Model File: ${bpmnFile}`);
    updateBpmnPythonScriptWithMonaco(originalPythonScript);
    cy.contains('acceptance-tests-model-1').click();
    cy.runPrimaryBpmnFile();
  });

  it('can paginate items', () => {
    // make sure we have some process instances
    cy.runPrimaryBpmnFile();
    cy.runPrimaryBpmnFile();
    cy.runPrimaryBpmnFile();
    cy.runPrimaryBpmnFile();
    cy.runPrimaryBpmnFile();

    cy.getBySel('process-instance-list-link').click();
    cy.basicPaginationTest();
  });

  it('can display logs', () => {
    // make sure we have some process instances
    cy.runPrimaryBpmnFile();
    cy.getBySel('process-instance-list-link').click();
    cy.getBySel('process-instance-show-link').first().click();
    cy.getBySel('process-instance-log-list-link').click();
    cy.contains('process_model_one');
    cy.contains('State change to COMPLETED');
    cy.basicPaginationTest();
  });

  it.only('can filter', () => {
    cy.getBySel('process-instance-list-link').click();
    cy.assertAtLeastOneItemInPaginatedResults();

    PROCESS_STATUSES.forEach((processStatus) => {
      if (!['all', 'waiting'].includes(processStatus)) {
        cy.get('[name=process-status-selection]').click();
        cy.get('[name=process-status-selection]').type(processStatus);
        cy.get(`[aria-label=${processStatus}]`).click();
        cy.contains('Process Status').click();
        cy.contains('Filter').click();
        cy.assertAtLeastOneItemInPaginatedResults();
        cy.getBySel(`process-instance-status-${processStatus}`).contains(
          processStatus
        );
        // there should really only be one, but in CI there are sometimes more
        cy.get('button[aria-label=Remove]:first').click();
      }
    });

    const date = new Date();
    date.setHours(date.getHours() - 1);
    filterByDate(date);
    cy.assertAtLeastOneItemInPaginatedResults();

    date.setHours(date.getHours() + 2);
    filterByDate(date);
    cy.assertNoItemInPaginatedResults();
  });
});