// Copyright 2018 The Bazel Authors. All rights reserved.
//
// 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.
package com.google.devtools.build.android;

import static java.nio.file.StandardOpenOption.CREATE_NEW;

import com.google.common.collect.ImmutableList;
import com.google.common.jimfs.Jimfs;
import com.google.common.truth.Truth;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.Files;
import java.nio.file.Path;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for the AndroidManifest class */
@RunWith(JUnit4.class)
public class AndroidManifestTest {

  private FileSystem fileSystem;

  @Before
  public void setUp() throws Exception {
    fileSystem = Jimfs.newFileSystem();
  }

  @Test
  public void parseMinSdkAndPackageName() throws Exception {
    final String packageName = "com.google.wooga";
    final String minSdk = "26";
    final AndroidManifest androidManifest =
        AndroidManifest.parseFrom(manifest(packageName, minSdk).write(fileSystem.getPath("tmp")));
    Truth.assertThat(androidManifest).isEqualTo(AndroidManifest.of(packageName, minSdk));
  }

  @Test
  public void parseMissingMinSdk() throws Exception {
    final String packageName = "com.google.wooga";
    final AndroidManifest androidManifest =
        AndroidManifest.parseFrom(manifest(packageName).write(fileSystem.getPath("tmp")));

    Truth.assertThat(androidManifest).isEqualTo(AndroidManifest.of(packageName, "1"));
  }

  @Test
  public void writeDummyManifestWithoutPlaceholdersNoMinSdk() throws Exception {
    final String packageName = "${applicationId}.wooga";
    final String packageForR = "com.google.android.wooga";
    final AndroidManifest androidManifest =
        AndroidManifest.parseFrom(manifest(packageName).write(fileSystem.getPath("tmp")));

    Truth.assertThat(
            Files.readAllLines(
                androidManifest.writeDummyManifestForAapt(
                    fileSystem.getPath("dummy-manifest"), packageForR),
                StandardCharsets.UTF_8))
        .containsExactly(
            "<?xml version='1.0' encoding='utf-8'?>",
            "<manifest xmlns:android='http://schemas.android.com/apk/res/android'",
            "package='com.google.android.wooga'>",
            "<application/>",
            "<uses-sdk android:minSdkVersion='1'/>",
            "</manifest>")
        .inOrder();
  }

  @Test
  public void writeDummyManifestWithoutPlaceholdersAndMinSdk() throws Exception {
    final String packageName = "${applicationId}.wooga";
    final String packageForR = "com.google.android.wooga";
    final AndroidManifest androidManifest =
        AndroidManifest.parseFrom(manifest(packageName, "26").write(fileSystem.getPath("tmp")));

    Truth.assertThat(
            Files.readAllLines(
                androidManifest.writeDummyManifestForAapt(
                    fileSystem.getPath("dummy-manifest"), packageForR),
                StandardCharsets.UTF_8))
        .containsExactly(
            "<?xml version='1.0' encoding='utf-8'?>",
            "<manifest xmlns:android='http://schemas.android.com/apk/res/android'",
            "package='com.google.android.wooga'>",
            "<application/>",
            "<uses-sdk android:minSdkVersion='26'/>",
            "</manifest>")
        .inOrder();
  }

  private static Manifest manifest(String pkg) {
    return manifest(pkg, "");
  }

  private static Manifest manifest(String pkg, String minSdk, String... lines) {
    return parent ->
        Files.write(
            Files.createDirectories(parent).resolve("AndroidManifest.xml"),
            ImmutableList.<String>builder()
                .add(
                    "<?xml version='1.0' encoding='utf-8'?>",
                    "<manifest",
                    "    xmlns:android='http://schemas.android.com/apk/res/android'",
                    String.format("    package='%s'>", pkg),
                    "<application>",
                    (minSdk == null || minSdk.isEmpty())
                        ? ""
                        : String.format("<uses-sdk android:minSdkVersion='%s'/>", minSdk))
                .add(lines)
                .add("</application>", "</manifest>")
                .build(),
            CREATE_NEW);
  }

  private interface Manifest {
    Path write(Path parent) throws IOException;
  }
}