/* Copyright 2017 Mozilla Foundation
 *
 * 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 { AbortException } from "../../src/shared/util.js";
import { PDFNetworkStream } from "../../src/display/network.js";

describe("network", function () {
  const pdf1 = new URL("../pdfs/tracemonkey.pdf", window.location).href;
  const pdf1Length = 1016315;

  it("read without stream and range", function (done) {
    const stream = new PDFNetworkStream({
      url: pdf1,
      rangeChunkSize: 65536,
      disableStream: true,
      disableRange: true,
    });

    const fullReader = stream.getFullReader();

    let isStreamingSupported, isRangeSupported;
    const promise = fullReader.headersReady.then(function () {
      isStreamingSupported = fullReader.isStreamingSupported;
      isRangeSupported = fullReader.isRangeSupported;
    });

    let len = 0,
      count = 0;
    const read = function () {
      return fullReader.read().then(function (result) {
        if (result.done) {
          return undefined;
        }
        count++;
        len += result.value.byteLength;
        return read();
      });
    };

    const readPromise = Promise.all([read(), promise]);

    readPromise
      .then(function (page) {
        expect(len).toEqual(pdf1Length);
        expect(count).toEqual(1);
        expect(isStreamingSupported).toEqual(false);
        expect(isRangeSupported).toEqual(false);
        done();
      })
      .catch(function (reason) {
        done.fail(reason);
      });
  });

  it("read custom ranges", function (done) {
    // We don't test on browsers that don't support range request, so
    // requiring this test to pass.
    const rangeSize = 32768;
    const stream = new PDFNetworkStream({
      url: pdf1,
      length: pdf1Length,
      rangeChunkSize: rangeSize,
      disableStream: true,
      disableRange: false,
    });

    const fullReader = stream.getFullReader();

    let isStreamingSupported, isRangeSupported, fullReaderCancelled;
    const promise = fullReader.headersReady.then(function () {
      isStreamingSupported = fullReader.isStreamingSupported;
      isRangeSupported = fullReader.isRangeSupported;
      // we shall be able to close the full reader without issues
      fullReader.cancel(new AbortException("Don't need fullReader."));
      fullReaderCancelled = true;
    });

    // Skipping fullReader results, requesting something from the PDF end.
    const tailSize = pdf1Length % rangeSize || rangeSize;

    const range1Reader = stream.getRangeReader(
      pdf1Length - tailSize - rangeSize,
      pdf1Length - tailSize
    );
    const range2Reader = stream.getRangeReader(
      pdf1Length - tailSize,
      pdf1Length
    );

    const result1 = { value: 0 },
      result2 = { value: 0 };
    const read = function (reader, lenResult) {
      return reader.read().then(function (result) {
        if (result.done) {
          return undefined;
        }
        lenResult.value += result.value.byteLength;
        return read(reader, lenResult);
      });
    };

    const readPromises = Promise.all([
      read(range1Reader, result1),
      read(range2Reader, result2),
      promise,
    ]);

    readPromises
      .then(function () {
        expect(result1.value).toEqual(rangeSize);
        expect(result2.value).toEqual(tailSize);
        expect(isStreamingSupported).toEqual(false);
        expect(isRangeSupported).toEqual(true);
        expect(fullReaderCancelled).toEqual(true);
        done();
      })
      .catch(function (reason) {
        done.fail(reason);
      });
  });
});

@@ -893,16 +893,22 @@
  range%22,
+ async
  functio
@@ -902,36 +902,32 @@
 async function (
-done
 ) %7B%0A    const st
@@ -1640,27 +1640,13 @@
     
-const readPromise =
+await
  Pro
@@ -1679,58 +1679,8 @@
 );%0A%0A
-    readPromise%0A      .then(function (page) %7B%0A    
     
@@ -1712,28 +1712,24 @@
 ength);%0A    
- 
-   
 expect(count
@@ -1742,28 +1742,24 @@
 ual(1);%0A    
-   
- 
 expect(isStr
@@ -1783,36 +1783,32 @@
 toEqual(false);%0A
-    
     expect(isRan
@@ -1840,103 +1840,8 @@
 e);%0A
-        done();%0A      %7D)%0A      .catch(function (reason) %7B%0A        done.fail(reason);%0A      %7D);%0A
   %7D)
@@ -1869,16 +1869,22 @@
 ranges%22,
+ async
  functio
@@ -1886,20 +1886,16 @@
 nction (
-done
 ) %7B%0A    
@@ -3389,28 +3389,13 @@
     
-const readPromises =
+await
  Pro
@@ -3503,55 +3503,8 @@
 );%0A%0A
-    readPromises%0A      .then(function () %7B%0A    
     
@@ -3545,28 +3545,24 @@
 eSize);%0A    
-   
- 
 expect(resul
@@ -3586,28 +3586,24 @@
 (tailSize);%0A
-    
     expect(i
@@ -3635,28 +3635,24 @@
 ual(false);%0A
-    
     expect(i
@@ -3687,20 +3687,16 @@
 e);%0A    
- 
-   
 expect(f
@@ -3734,103 +3734,8 @@
 e);%0A
-        done();%0A      %7D)%0A      .catch(function (reason) %7B%0A        done.fail(reason);%0A      %7D);%0A
   %7D)

Convert done callbacks to async/await in `test/unit/network_spec.js`