/*
 * Copyright The OpenTelemetry Authors
 *
 * 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
 *
 *      https://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 { getNumberFromEnv } from '@opentelemetry/core';
import { LogRecordLimits } from './types';

export function loadDefaultConfig() {
  return {
    forceFlushTimeoutMillis: 30000,
    logRecordLimits: {
      attributeValueLengthLimit:
        getNumberFromEnv('OTEL_LOGRECORD_ATTRIBUTE_VALUE_LENGTH_LIMIT') ??
        Infinity,
      attributeCountLimit:
        getNumberFromEnv('OTEL_LOGRECORD_ATTRIBUTE_COUNT_LIMIT') ?? 128,
    },
    includeTraceContext: true,
  };
}

/**
 * When general limits are provided and model specific limits are not,
 * configures the model specific limits by using the values from the general ones.
 * @param logRecordLimits User provided limits configuration
 */
export function reconfigureLimits(
  logRecordLimits: LogRecordLimits
): Required<LogRecordLimits> {
  return {
    /**
     * Reassign log record attribute count limit to use first non null value defined by user or use default value
     */
    attributeCountLimit:
      logRecordLimits.attributeCountLimit ??
      getNumberFromEnv('OTEL_LOGRECORD_ATTRIBUTE_COUNT_LIMIT') ??
      getNumberFromEnv('OTEL_ATTRIBUTE_COUNT_LIMIT') ??
      128,
    /**
     * Reassign log record attribute value length limit to use first non null value defined by user or use default value
     */
    attributeValueLengthLimit:
      logRecordLimits.attributeValueLengthLimit ??
      getNumberFromEnv('OTEL_LOGRECORD_ATTRIBUTE_VALUE_LENGTH_LIMIT') ??
      getNumberFromEnv('OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT') ??
      Infinity,
  };
}