// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// @dart = 2.8

import 'dart:async';

import 'package:file/memory.dart';
import 'package:flutter_tools/src/artifacts.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/build_info.dart';
import 'package:flutter_tools/src/compile.dart';
import 'package:package_config/package_config.dart';

import '../src/common.dart';
import '../src/fake_process_manager.dart';

void main() {
  testWithoutContext('StdoutHandler can parse output for successful batch compilation', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());

    stdoutHandler.reset();
    'result abc\nline1\nline2\nabc\nabc /path/to/main.dart.dill 0'.split('\n').forEach(stdoutHandler.handler);
    final CompilerOutput output = await  stdoutHandler.compilerOutput.future;

    expect(logger.errorText, equals('line1\nline2\n'));
    expect(output.outputFilename, equals('/path/to/main.dart.dill'));
  });

  testWithoutContext('StdoutHandler can parse output for failed batch compilation', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());

    stdoutHandler.reset();
    'result abc\nline1\nline2\nabc\nabc'.split('\n').forEach(stdoutHandler.handler);
    final CompilerOutput output = await stdoutHandler.compilerOutput.future;

    expect(logger.errorText, equals('line1\nline2\n'));
    expect(output, equals(null));
  });

  testWithoutContext('KernelCompiler passes correct configuration to frontend server process', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
         'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          'file:///path/to/main.dart'
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );
    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );
    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect((await output).outputFilename, '');
  });

  testWithoutContext('KernelCompiler returns null if StdoutHandler returns null', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
         'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          'file:///path/to/main.dart'
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );
    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );
    stdoutHandler.compilerOutput.complete(null);
    completer.complete();

    expect(await output, null);
  });

  testWithoutContext('KernelCompiler returns null if frontend_server process exits with non-zero code', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
         'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          'file:///path/to/main.dart'
        ], completer: completer, exitCode: 127),
      ]),
      stdoutHandler: stdoutHandler,
    );
    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );
    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect(await output, null);
  });

  testWithoutContext('KernelCompiler passes correct AOT config to frontend_server in aot/profile mode', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
          'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=true',
          '-Ddart.vm.product=false',
          '--no-link-platform',
          '--aot',
          '--tfa',
          '--packages',
          '.packages',
          'file:///path/to/main.dart'
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );
    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.profile,
      trackWidgetCreation: false,
      aot: true,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );
    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect((await output).outputFilename, '');
  });

  testWithoutContext('passes correct AOT config to kernel compiler in aot/release mode', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
          'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=true',
          '--no-link-platform',
          '--aot',
          '--tfa',
          '--packages',
          '.packages',
          'file:///path/to/main.dart'
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );
    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.release,
      trackWidgetCreation: false,
      aot: true,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );
    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect((await output).outputFilename, '');
  });

  testWithoutContext('KernelCompiler passes dartDefines to the frontend_server', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[],
      fileSystemScheme: '',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
          'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-DFOO=bar',
          '-DBAZ=qux',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          'file:///path/to/main.dart',
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );

    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/path/to/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>['FOO=bar', 'BAZ=qux'],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );

    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect((await output).outputFilename, '');
  });

  testWithoutContext('KernelCompiler maps a file to a multi-root scheme if provided', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();

    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: MemoryFileSystem.test(),
      fileSystemRoots: <String>[
        '/foo/bar/fizz',
      ],
      fileSystemScheme: 'scheme',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
          'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          'scheme:///main.dart',
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );

    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/foo/bar/fizz/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
    );

    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();

    expect((await output).outputFilename, '');
  });

  testWithoutContext('KernelCompiler uses generated entrypoint', () async {
    final BufferLogger logger = BufferLogger.test();
    final StdoutHandler stdoutHandler = StdoutHandler(logger: logger, fileSystem: MemoryFileSystem.test());
    final Completer<void> completer = Completer<void>();
    final MemoryFileSystem fs = MemoryFileSystem.test();
    final KernelCompiler kernelCompiler = KernelCompiler(
      artifacts: Artifacts.test(),
      fileSystem: fs,
      fileSystemRoots: <String>[
        '/foo/bar/fizz',
      ],
      fileSystemScheme: 'scheme',
      logger: logger,
      processManager: FakeProcessManager.list(<FakeCommand>[
        FakeCommand(command: const <String>[
          'HostArtifact.engineDartBinary',
          '--disable-dart-dev',
          'Artifact.frontendServerSnapshotForEngineDartSdk',
          '--sdk-root',
          '/path/to/sdkroot/',
          '--target=flutter',
          '--no-print-incremental-dependencies',
          '-Ddart.vm.profile=false',
          '-Ddart.vm.product=false',
          '--enable-asserts',
          '--no-link-platform',
          '--packages',
          '.packages',
          '.dart_tools/flutter_build/generated_main.dart',
        ], completer: completer),
      ]),
      stdoutHandler: stdoutHandler,
    );

    final Directory buildDir = fs.directory('.dart_tools')
        .childDirectory('flutter_build')
        .childDirectory('test');

    buildDir.parent.childFile('generated_main.dart').createSync(recursive: true);

    final Future<CompilerOutput> output = kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
      mainPath: '/foo/bar/fizz/main.dart',
      buildMode: BuildMode.debug,
      trackWidgetCreation: false,
      dartDefines: const <String>[],
      packageConfig: PackageConfig.empty,
      packagesPath: '.packages',
      buildDir: buildDir,
      checkDartPluginRegistry: true,
    );

    stdoutHandler.compilerOutput.complete(const CompilerOutput('', 0, <Uri>[]));
    completer.complete();
    await output;
  });
}