constants.dart

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

const kLichessHost = String.fromEnvironment('LICHESS_HOST', defaultValue: 'lichess.dev');

const kLichessWSHost = String.fromEnvironment(
  'LICHESS_WS_HOST',
  defaultValue: 'socket.lichess.dev',
);

const kLichessWSSecret = String.fromEnvironment(
  'LICHESS_WS_SECRET',
  defaultValue: 'somethingElseInProd',
);

const kLichessCDNHost = String.fromEnvironment(
  'LICHESS_CDN_HOST',
  defaultValue: 'https://lichess1.org',
);

const kLichessOpeningExplorerHost = String.fromEnvironment(
  'LICHESS_OPENING_EXPLORER_HOST',
  defaultValue: 'explorer.lichess.org',
);

const kLichessTablebaseHost = String.fromEnvironment(
  'LICHESS_TABLEBASE_HOST',
  defaultValue: 'tablebase.lichess.org',
);

const kLichessDevUser = String.fromEnvironment('LICHESS_DEV_USER', defaultValue: 'lichess');
const kLichessDevPassword = String.fromEnvironment('LICHESS_DEV_PASSWORD');

const kLichessClientId = 'lichess_mobile';

const kSRIStorageKey = 'socket_random_identifier';

// lichess
// https://github.com/lichess-org/lila/blob/4562a83cdb263c3ebf7e148c0f666f0ff92b91c7/modules/rating/src/main/Glicko.scala#L71
const kProvisionalDeviation = 110;
const kClueLessDeviation = 230;

// UI
const double kCupertinoBarBlurSigma = 30.0;
const double kCupertinoBarOpacity = 0.8;

const kDefaultSeedColor = Color.fromARGB(255, 191, 128, 29);

const kGoldenRatio = 1.61803398875;

/// Flex golden ratio base (flex has to be an int).
const kFlexGoldenRatioBase = 100000000000;

/// Flex golden ratio (flex has to be an int).
const kFlexGoldenRatio = 161803398875;

/// Use same box shadows as material widgets with elevation 1.
final List<BoxShadow> boardShadows = defaultTargetPlatform == TargetPlatform.iOS
    ? <BoxShadow>[]
    : kElevationToShadow[1]!;

const kMaxClockTextScaleFactor = 1.94;
const kEmptyWidget = SizedBox.shrink();
const kTabletBoardTableSidePadding = 16.0;

/// In crazyhouse, when displaying pockets above/below the board, add this much additional side padding to make the board smaller and avoid overflows.
const kAdditionalBoardSidePaddingForPockets = 70.0;
const kBottomBarHeight = 56.0;
const kMaterialPopupMenuMaxWidth = 500.0;

/// The threshold to detect screens with a small remaining height minus board.
const kSmallHeightMinusBoard = 170;

// annotations
class _AllowedWidgetReturn {
  const _AllowedWidgetReturn();
}

/// Use to annotate a function that is allowed to return a Widget
const allowedWidgetReturn = _AllowedWidgetReturn();