/**
 * Copyright 2015 CANAL+ Group
 *
 * 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 type { ISegmentUrlIntermediateRepresentation } from "../../node_parser_types";
import { parseByteRange, ValueParser } from "./utils";

/**
 * Parse a SegmentURL element into a SegmentURL intermediate
 * representation.
 * @param {Element} root - The SegmentURL root element.
 * @returns {Array}
 */
export default function parseSegmentURL(
  root: Element,
): [ISegmentUrlIntermediateRepresentation, Error[]] {
  const parsedSegmentURL: ISegmentUrlIntermediateRepresentation = {};
  const warnings: Error[] = [];
  const parseValue = ValueParser(parsedSegmentURL, warnings);
  for (let i = 0; i < root.attributes.length; i++) {
    const attribute = root.attributes[i];
    switch (attribute.name) {
      case "media":
        parsedSegmentURL.media = attribute.value;
        break;

      case "indexRange":
        parseValue(attribute.value, {
          asKey: "indexRange",
          parser: parseByteRange,
          dashName: "indexRange",
        });
        break;

      case "index":
        parsedSegmentURL.index = attribute.value;
        break;

      case "mediaRange":
        parseValue(attribute.value, {
          asKey: "mediaRange",
          parser: parseByteRange,
          dashName: "mediaRange",
        });
        break;
    }
  }
  return [parsedSegmentURL, warnings];
}