@allma/core-cdk/dist-logic/allma-core/data-transformers/date-time-calculator.js

Core AWS CDK constructs for deploying the Allma serverless AI orchestration platform.

import { z } from 'zod';
import { log_error } from '@allma/core-sdk';
/**
 * Zod schema for validating the input to the date-time-calculator module.
 */
const DateTimeCalculatorInputSchema = z.object({
    baseTime: z.string().datetime({ message: "baseTime must be a valid ISO 8601 string." }),
    offsetSeconds: z.number({ required_error: "offsetSeconds (number) is required." }),
    operation: z.enum(['add', 'subtract'], { required_error: "operation must be 'add' or 'subtract'." }),
});
/**
 * A data transformation module that adds or subtracts a specified number of seconds
 * from a base timestamp.
 *
 * @param stepInput The input object containing baseTime, offsetSeconds, and operation.
 * @returns A StepHandlerOutput containing the calculated ISO 8601 timestamp string.
 */
export const executeDateTimeCalculator = async (stepDefinition, stepInput) => {
    // 1. Validate the combined input from mappings and literals.
    const validation = DateTimeCalculatorInputSchema.safeParse(stepInput);
    if (!validation.success) {
        const errorMsg = `Invalid input for system/date-time-calculator`;
        // Log the detailed validation error for easier debugging.
        log_error(errorMsg, { errors: validation.error.flatten(), receivedInput: stepInput });
        // Throw a clear error to fail the step.
        throw new Error(`${errorMsg}: ${validation.error.message}`);
    }
    const { baseTime, offsetSeconds, operation } = validation.data;
    // 2. Perform the date calculation.
    const baseDate = new Date(baseTime);
    const offsetMilliseconds = offsetSeconds * 1000;
    let resultTimestamp;
    if (operation === 'subtract') {
        resultTimestamp = baseDate.getTime() - offsetMilliseconds;
    }
    else { // operation === 'add'
        resultTimestamp = baseDate.getTime() + offsetMilliseconds;
    }
    const resultDate = new Date(resultTimestamp);
    const resultIsoString = resultDate.toISOString();
    // 3. Return the result. The output mapping in the flow will place this
    //    string into the desired location in the context.
    return {
        outputData: {
            result: resultIsoString,
        },
    };
};
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