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// to you under the Apache License, Version 2.0 (the
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//
//     http://www.apache.org/licenses/LICENSE-2.0
//
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import { UdfCategory, UdfCategoryFunctions } from '../../../sql/reference/types';
import I18n from '../../../utils/i18n';

export const AGGREGATE_FUNCTIONS: UdfCategoryFunctions = {
  count: {
    name: 'count',
    returnTypes: ['BIGINT'],
    arguments: [[{ type: 'T' }]],
    signature: 'count(col)',
    draggable: 'count()',
    description:
      'count(*) - Returns the total number of retrieved rows, including rows containing NULL values. count(expr) - Returns the number of rows for which the supplied expression is non-NULL.'
  },
  sum: {
    name: 'sum',
    returnTypes: ['DOUBLE'],
    arguments: [[{ type: 'T' }]],
    signature: 'sum(col)',
    draggable: 'sum()',
    description:
      'Returns the sum of the elements in the group or the sum of the distinct values of the column in the group.'
  },
  max: {
    name: 'max',
    returnTypes: ['DOUBLE'],
    arguments: [[{ type: 'T' }]],
    signature: 'max(col)',
    draggable: 'max()',
    description: 'Returns the maximum value of the column in the group.'
  },
  min: {
    name: 'min',
    returnTypes: ['DOUBLE'],
    arguments: [[{ type: 'T' }]],
    signature: 'min(col)',
    draggable: 'min()',
    description: 'Returns the minimum of the column in the group.'
  }
};

export const UDF_CATEGORIES: UdfCategory[] = [
  { name: I18n('Aggregate'), isAggregate: true, functions: AGGREGATE_FUNCTIONS }
];