import AdhocMetric, { EXPRESSION_TYPES } from '../../../src/explore/AdhocMetric';
import { AGGREGATES } from '../../../src/explore/constants';

const valueColumn = { type: 'DOUBLE', column_name: 'value' };

describe('AdhocMetric', () => {
  it('sets label, hasCustomLabel and optionName in constructor', () => {
    const adhocMetric = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
    });
    expect(adhocMetric.optionName.length).toBeGreaterThan(10);
    expect(adhocMetric).toEqual({
      expressionType: EXPRESSION_TYPES.SIMPLE,
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
      fromFormData: false,
      label: 'SUM(value)',
      hasCustomLabel: false,
      optionName: adhocMetric.optionName,
      sqlExpression: null,
    });
  });

  it('can create altered duplicates', () => {
    const adhocMetric1 = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
    });
    const adhocMetric2 = adhocMetric1.duplicateWith({ aggregate: AGGREGATES.AVG });

    expect(adhocMetric1.column).toBe(adhocMetric2.column);
    expect(adhocMetric1.column).toBe(valueColumn);

    expect(adhocMetric1.aggregate).toBe(AGGREGATES.SUM);
    expect(adhocMetric2.aggregate).toBe(AGGREGATES.AVG);
  });

  it('can verify equality', () => {
    const adhocMetric1 = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
    });
    const adhocMetric2 = adhocMetric1.duplicateWith({});

    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric1.equals(adhocMetric2)).toBe(true);
  });

  it('can verify inequality', () => {
    const adhocMetric1 = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
      label: 'old label',
      hasCustomLabel: true,
    });
    const adhocMetric2 = adhocMetric1.duplicateWith({ label: 'new label' });

    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric1.equals(adhocMetric2)).toBe(false);

    const adhocMetric3 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SQL,
      sqlExpression: 'COUNT(*)',
      label: 'old label',
      hasCustomLabel: true,
    });
    const adhocMetric4 = adhocMetric3.duplicateWith({ sqlExpression: 'COUNT(1)' });

    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric3.equals(adhocMetric4)).toBe(false);
  });

  it('updates label if hasCustomLabel is false', () => {
    const adhocMetric1 = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
    });
    const adhocMetric2 = adhocMetric1.duplicateWith({ aggregate: AGGREGATES.AVG });

    expect(adhocMetric2.label).toBe('AVG(value)');
  });

  it('keeps label if hasCustomLabel is true', () => {
    const adhocMetric1 = new AdhocMetric({
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
      hasCustomLabel: true,
      label: 'label1',
    });
    const adhocMetric2 = adhocMetric1.duplicateWith({ aggregate: AGGREGATES.AVG });

    expect(adhocMetric2.label).toBe('label1');
  });

  it('can determine if it is valid', () => {
    const adhocMetric1 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SIMPLE,
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
      hasCustomLabel: true,
      label: 'label1',
    });
    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric1.isValid()).toBe(true);

    const adhocMetric2 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SIMPLE,
      column: valueColumn,
      aggregate: null,
      hasCustomLabel: true,
      label: 'label1',
    });
    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric2.isValid()).toBe(false);

    const adhocMetric3 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SQL,
      sqlExpression: 'COUNT(*)',
      hasCustomLabel: true,
      label: 'label1',
    });
    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric3.isValid()).toBe(true);

    const adhocMetric4 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SQL,
      column: valueColumn,
      aggregate: AGGREGATES.SUM,
      hasCustomLabel: true,
      label: 'label1',
    });
    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric4.isValid()).toBe(false);

    const adhocMetric5 = new AdhocMetric({
      expressionType: EXPRESSION_TYPES.SQL,
      hasCustomLabel: true,
      label: 'label1',
    });
    // eslint-disable-next-line no-unused-expressions
    expect(adhocMetric5.isValid()).toBe(false);
  });

  it(
    'can translate back from sql expressions to simple expressions when possible',
    () => {
      const adhocMetric = new AdhocMetric({
        expressionType: EXPRESSION_TYPES.SQL,
        sqlExpression: 'AVG(my_column)',
        hasCustomLabel: true,
        label: 'label1',
      });
      expect(adhocMetric.inferSqlExpressionColumn()).toBe('my_column');
      expect(adhocMetric.inferSqlExpressionAggregate()).toBe('AVG');

      const adhocMetric2 = new AdhocMetric({
        expressionType: EXPRESSION_TYPES.SQL,
        sqlExpression: 'AVG(SUM(my_column)) / MAX(other_column)',
        hasCustomLabel: true,
        label: 'label1',
      });
      expect(adhocMetric2.inferSqlExpressionColumn()).toBeNull();
      expect(adhocMetric2.inferSqlExpressionAggregate()).toBeNull();
    },
  );

  it(
    'will infer columns and aggregates when converting to a simple expression',
    () => {
      const adhocMetric = new AdhocMetric({
        expressionType: EXPRESSION_TYPES.SQL,
        sqlExpression: 'AVG(my_column)',
        hasCustomLabel: true,
        label: 'label1',
      });
      const adhocMetric2 = adhocMetric.duplicateWith({
        expressionType: EXPRESSION_TYPES.SIMPLE,
        aggregate: AGGREGATES.SUM,
      });
      expect(adhocMetric2.aggregate).toBe(AGGREGATES.SUM);
      expect(adhocMetric2.column.column_name).toBe('my_column');

      const adhocMetric3 = adhocMetric.duplicateWith({
        expressionType: EXPRESSION_TYPES.SIMPLE,
        column: valueColumn,
      });
      expect(adhocMetric3.aggregate).toBe(AGGREGATES.AVG);
      expect(adhocMetric3.column.column_name).toBe('value');
    },
  );
});