All files / if-run/builtins/multiply index.ts

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import {z} from 'zod';
 
import {PluginParams, ConfigParams} from '@grnsft/if-core/types';
import {PluginFactory} from '@grnsft/if-core/interfaces';
import {ERRORS} from '@grnsft/if-core/utils';
 
import {validate} from '../../../common/util/validations';
 
import {STRINGS} from '../../config';
 
const {ConfigError} = ERRORS;
const {MISSING_CONFIG} = STRINGS;
 
export const Multiply = PluginFactory({
  configValidation: (config: ConfigParams) => {
    if (!config || !Object.keys(config)?.length) {
      throw new ConfigError(MISSING_CONFIG);
    }
 
    const configSchema = z.object({
      'input-parameters': z.array(z.string()),
      'output-parameter': z.string().min(1),
    });
 
    return validate<z.infer<typeof configSchema>>(configSchema, config);
  },
  inputValidation: (input: PluginParams, config: ConfigParams) => {
    const inputParameters = config['input-parameters'];
 
    const inputData = inputParameters.reduce(
      (acc: {[x: string]: any}, param: string | number) => {
        acc[param] = input[param];
 
        return acc;
      },
      {} as Record<string, number>
    );
 
    const validationSchema = z.record(z.string(), z.number());
 
    return validate(validationSchema, inputData);
  },
  implementation: async (inputs: PluginParams[], config: ConfigParams) => {
    const {
      'input-parameters': inputParameters,
      'output-parameter': outputParameter,
    } = config;
 
    return inputs.map(input => {
      const calculatedResult = calculateProduct(input, inputParameters);
 
      return {
        ...input,
        [outputParameter]: calculatedResult,
      };
    });
  },
  allowArithmeticExpressions: [],
});
 
/**
 * Calculates the product of the components.
 */
const calculateProduct = (input: PluginParams, inputParameters: string[]) =>
  inputParameters.reduce(
    (accumulator, metricToMultiply) => accumulator * input[metricToMultiply],
    1
  );