/**
 * Copyright 2024-2026 Wingify Software Pvt. Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { isFunction } from '../utils/DataTypeUtil';
import { Constants } from '../constants';

const nargs = /\{([0-9a-zA-Z_]+)\}/g;

/**
 * Constructs a message by replacing placeholders in a template with corresponding values from a data object.
 *
 * @param {string} template - The message template containing placeholders in the format `{key}`.
 * @param {Record<string, any>} data - An object containing keys and values used to replace the placeholders in the template.
 * @returns {string} The constructed message with all placeholders replaced by their corresponding values from the data object.
 */
export function buildMessage(template: string = '', data: Record<string, any> = {}): string {
  const payload = {
    brand: Constants.BRAND_DISPLAY_NAME,
    logPrefix: Constants.LOG_PREFIX,
    ...data,
  };
  try {
    return template.replace(nargs, (match, key, index) => {
      // Check for escaped placeholders
      if (template[index - 1] === '{' && template[index + match.length] === '}') {
        return key;
      }

      // Retrieve the value from the data object
      const value = payload[key];

      // If the key does not exist or the value is null/undefined, return an empty string
      if (value === undefined || value === null) {
        return '';
      }

      // If the value is a function, evaluate it
      return isFunction(value) ? value() : value;
    });
  } catch (err) {
    return template; // Return the original template in case of an error
  }
}