/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

// @flow

import type { OriginalFrame, SourceLocation } from "debugger-html";

const { getWasmXScopes } = require("./wasmXScopes");

// Returns expanded stack frames details based on the generated location.
// The function return null if not information was found.
async function getOriginalStackFrames(
  generatedLocation: SourceLocation
): Promise<?Array<OriginalFrame>> {
  const wasmXScopes = await getWasmXScopes(generatedLocation.sourceId);
  if (!wasmXScopes) {
    return null;
  }

  const scopes = wasmXScopes.search(generatedLocation);
  if (scopes.length === 0) {
    console.warn("Something wrong with debug data: none original frames found");
    return null;
  }
  return scopes;
}

module.exports = {
  getOriginalStackFrames
};