import 'package:event_bus/event_bus.dart';
import 'package:kiwi/kiwi.dart';
import 'package:nc_photos/ci_string.dart';
import 'package:nc_photos/di_container.dart';
import 'package:nc_photos/entity/album.dart';
import 'package:nc_photos/entity/album/cover_provider.dart';
import 'package:nc_photos/entity/album/item.dart';
import 'package:nc_photos/entity/album/provider.dart';
import 'package:nc_photos/entity/album/sort_provider.dart';
import 'package:nc_photos/entity/file.dart';
import 'package:nc_photos/entity/sqlite_table_extension.dart' as sql;
import 'package:nc_photos/or_null.dart';
import 'package:nc_photos/pref.dart';
import 'package:nc_photos/use_case/add_to_album.dart';
import 'package:test/test.dart';

import '../mock_type.dart';
import '../test_util.dart' as util;

void main() {
  KiwiContainer().registerInstance<EventBus>(MockEventBus());

  group("AddToAlbum", () {
    test("file", _addFile);
    test("ignore existing file", _addExistingFile);
    test("ignore existing file (shared)", _addExistingSharedFile);
    group("shared album (owned)", () {
      test("file", _addFileToSharedAlbumOwned);
      test("file owned by user", _addFileOwnedByUserToSharedAlbumOwned);
    });
    group("shared album (not owned)", () {
      test("file", _addFileToMultiuserSharedAlbumNotOwned);
    });
  });
}

/// Add a [File] to an [Album]
///
/// Expect: file added to album
Future<void> _addFile() async {
  final account = util.buildAccount();
  final file = (util.FilesBuilder(initialFileId: 1)..addJpeg("admin/test1.jpg"))
      .build()[0];
  final album = util.AlbumBuilder().build();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareRepo(),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider()),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await util.insertFiles(c.sqliteDb, account, [file]);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "admin".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: file,
      ),
    ],
  );
  expect(
    c.albumMemoryRepo.albums
        .map((e) => e.copyWith(
              // we need to set a known value to lastUpdated
              lastUpdated: OrNull(DateTime.utc(2020, 1, 2, 3, 4, 5)),
            ))
        .toList(),
    [
      Album(
        lastUpdated: DateTime.utc(2020, 1, 2, 3, 4, 5),
        name: "test",
        provider: AlbumStaticProvider(
          items: [
            AlbumFileItem(
              addedBy: "admin".toCi(),
              addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
              file: file,
            ).minimize(),
          ],
          latestItemTime: DateTime.utc(2020, 1, 2, 3, 4, 5),
        ),
        coverProvider: AlbumAutoCoverProvider(
          coverFile: file,
        ),
        sortProvider: const AlbumNullSortProvider(),
        albumFile: albumFile,
      ),
    ],
  );
}

/// Add a [File], already included in the [Album], to an [Album]
///
/// Expect: file not added to album
Future<void> _addExistingFile() async {
  final account = util.buildAccount();
  final files =
      (util.FilesBuilder(initialFileId: 1)..addJpeg("admin/test1.jpg")).build();
  final album = (util.AlbumBuilder()..addFileItem(files[0])).build();
  final oldFile = files[0];
  final newFile = files[0].copyWith();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareRepo(),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider()),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await util.insertFiles(c.sqliteDb, account, files);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "admin".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: newFile,
      ),
    ],
  );
  expect(
    c.albumMemoryRepo.albums
        .map((e) => e.copyWith(
              // we need to set a known value to lastUpdated
              lastUpdated: OrNull(DateTime.utc(2020, 1, 2, 3, 4, 5)),
            ))
        .toList(),
    [
      Album(
        lastUpdated: DateTime.utc(2020, 1, 2, 3, 4, 5),
        name: "test",
        provider: AlbumStaticProvider(
          items: [
            AlbumFileItem(
              addedBy: "admin".toCi(),
              addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
              file: files[0],
            ),
          ],
          latestItemTime: DateTime.utc(2020, 1, 2, 3, 4, 5),
        ),
        coverProvider: AlbumAutoCoverProvider(coverFile: files[0]),
        sortProvider: const AlbumNullSortProvider(),
        albumFile: albumFile,
      ),
    ],
  );
  // when there's a conflict, it's guaranteed that the original file in the
  // album is kept and the incoming file dropped
  expect(
      identical(
          AlbumStaticProvider.of(c.albumMemoryRepo.albums[0])
              .items
              .whereType<AlbumFileItem>()
              .first
              .file,
          oldFile),
      true);
  expect(
      identical(
          AlbumStaticProvider.of(c.albumMemoryRepo.albums[0])
              .items
              .whereType<AlbumFileItem>()
              .first
              .file,
          newFile),
      false);
}

/// Add a file shared with you to an album, where the file is already included
///
/// Expect: file not added to album
Future<void> _addExistingSharedFile() async {
  final account = util.buildAccount();
  final user1Account = util.buildAccount(userId: "user1");
  final files =
      (util.FilesBuilder(initialFileId: 1)..addJpeg("admin/test1.jpg")).build();
  final user1Files = [
    files[0].copyWith(path: "remote.php/dav/files/user1/test1.jpg")
  ];
  final album = (util.AlbumBuilder()..addFileItem(files[0])).build();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareRepo(),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider()),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await c.sqliteDb.insertAccountOf(user1Account);
    await util.insertFiles(c.sqliteDb, account, files);
    await util.insertFiles(c.sqliteDb, user1Account, user1Files);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "user1".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: user1Files[0],
      ),
    ],
  );
  expect(
    c.albumMemoryRepo.albums
        .map((e) => e.copyWith(
              // we need to set a known value to lastUpdated
              lastUpdated: OrNull(DateTime.utc(2020, 1, 2, 3, 4, 5)),
            ))
        .toList(),
    [
      Album(
        lastUpdated: DateTime.utc(2020, 1, 2, 3, 4, 5),
        name: "test",
        provider: AlbumStaticProvider(
          items: [
            AlbumFileItem(
              addedBy: "admin".toCi(),
              addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
              file: files[0],
            ),
          ],
          latestItemTime: DateTime.utc(2020, 1, 2, 3, 4, 5),
        ),
        coverProvider: AlbumAutoCoverProvider(coverFile: files[0]),
        sortProvider: const AlbumNullSortProvider(),
        albumFile: albumFile,
      ),
    ],
  );
}

/// Add a file to a shared album (admin -> user1)
///
/// Expect: a new share (admin -> user1) is created for the file
Future<void> _addFileToSharedAlbumOwned() async {
  final account = util.buildAccount();
  final file = (util.FilesBuilder(initialFileId: 1)..addJpeg("admin/test1.jpg"))
      .build()[0];
  final album = (util.AlbumBuilder()..addShare("user1")).build();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareMemoryRepo([
      util.buildShare(id: "0", file: albumFile, shareWith: "user1"),
    ]),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider({
      "isLabEnableSharedAlbum": true,
    })),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await util.insertFiles(c.sqliteDb, account, [file]);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "admin".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: file,
      ),
    ],
  );
  expect(
    c.shareMemoryRepo.shares,
    [
      util.buildShare(id: "0", file: albumFile, shareWith: "user1"),
      util.buildShare(id: "1", file: file, shareWith: "user1"),
    ],
  );
}

/// Add a file owned by user (user1) to a shared album (admin -> user1)
///
/// Expect: no shares created
Future<void> _addFileOwnedByUserToSharedAlbumOwned() async {
  final account = util.buildAccount();
  final file = (util.FilesBuilder(initialFileId: 1)
        ..addJpeg("admin/test1.jpg", ownerId: "user1"))
      .build()[0];
  final album = (util.AlbumBuilder()..addShare("user1")).build();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareMemoryRepo([
      util.buildShare(id: "0", file: albumFile, shareWith: "user1"),
    ]),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider({
      "isLabEnableSharedAlbum": true,
    })),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await util.insertFiles(c.sqliteDb, account, [file]);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "admin".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: file,
      ),
    ],
  );
  expect(
    c.shareMemoryRepo.shares,
    [
      util.buildShare(id: "0", file: albumFile, shareWith: "user1"),
    ],
  );
}

/// Add a file to a shared album (user1 -> admin, user2)
///
/// Expect: a new share (admin -> user1, user2) is created for the file
Future<void> _addFileToMultiuserSharedAlbumNotOwned() async {
  // doesn't work right now, skipped
  final account = util.buildAccount();
  final file = (util.FilesBuilder(initialFileId: 1)..addJpeg("admin/test1.jpg"))
      .build()[0];
  final album = (util.AlbumBuilder(ownerId: "user1")
        ..addShare("admin")
        ..addShare("user2"))
      .build();
  final albumFile = album.albumFile!;
  final c = DiContainer(
    fileRepo: MockFileMemoryRepo(),
    albumRepo: MockAlbumMemoryRepo([album]),
    shareRepo: MockShareMemoryRepo([
      util.buildShare(
          id: "0", file: albumFile, uidOwner: "user1", shareWith: "admin"),
      util.buildShare(
          id: "1", file: albumFile, uidOwner: "user1", shareWith: "user2"),
    ]),
    sqliteDb: util.buildTestDb(),
    pref: Pref.scoped(PrefMemoryProvider({
      "isLabEnableSharedAlbum": true,
    })),
  );
  addTearDown(() => c.sqliteDb.close());
  await c.sqliteDb.transaction(() async {
    await c.sqliteDb.insertAccountOf(account);
    await util.insertFiles(c.sqliteDb, account, [file]);
  });

  await AddToAlbum(c)(
    account,
    c.albumMemoryRepo.findAlbumByPath(albumFile.path),
    [
      AlbumFileItem(
        addedBy: "admin".toCi(),
        addedAt: DateTime.utc(2020, 1, 2, 3, 4, 5),
        file: file,
      ),
    ],
  );
  expect(
    c.shareMemoryRepo.shares,
    [
      util.buildShare(
          id: "0", uidOwner: "user1", file: albumFile, shareWith: "admin"),
      util.buildShare(
          id: "1", uidOwner: "user1", file: albumFile, shareWith: "user2"),
      // the order for these two shares are actually NOT guaranteed
      util.buildShare(id: "2", file: file, shareWith: "user2"),
      util.buildShare(id: "3", file: file, shareWith: "user1"),
    ],
  );
}