translate-maker/lib/filters/plural.js

Lightweight translation module. Internationalize your great project.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

exports.__esModule = true;
exports.default = plural;

var _find = _interopRequireDefault(require("lodash/find"));

var _getPlural = _interopRequireDefault(require("../utils/getPlural"));

function getValue(data, key, defaultValue) {
  var items = data || [];
  var option = (0, _find.default)(items, function (item) {
    return item.key === key;
  });
  return option ? option.value : defaultValue;
}

function plural(value, part, attrs, metadata) {
  var _this$getOptions = this.getOptions(),
      locale = _this$getOptions.locale;

  var numberValue = Number(value);
  var currentPlural = (0, _getPlural.default)(locale, 'en');
  var pluralValue = currentPlural(numberValue);
  var offset = getValue(metadata, 'offset', 0);
  var smartValue = offset ? numberValue - offset : value; // try to find exact value

  var exactKey = "=" + numberValue;
  var option = null;
  var defaultOption = null;

  for (var _len = arguments.length, args = new Array(_len > 4 ? _len - 4 : 0), _key = 4; _key < _len; _key++) {
    args[_key - 4] = arguments[_key];
  }

  var exactOption = (0, _find.default)(args, function (arg) {
    if (arg.type !== 'pair') {
      return false;
    }

    var key = typeof arg.key === 'string' ? arg.key.toLowerCase() : arg.key;

    if (!key || key === 'other') {
      defaultOption = arg;
    } else if (key === exactKey) {
      return true;
    } else if (key === pluralValue) {
      option = arg;
    }

    return undefined;
  });

  if (exactOption) {
    return this.buildText(exactOption.value, attrs, smartValue);
  } else if (option) {
    return this.buildText(option.value, attrs, smartValue);
  } else if (defaultOption) {
    return this.buildText(defaultOption.value, attrs, smartValue);
  }

  return undefined;
}
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