import 'package:flutter/material.dart';

import 'yanting_text.dart';
import 'yanting_tokens.dart';

ThemeData buildAppTheme(Brightness brightness) {
  final primary = brightness == Brightness.dark
      ? YantingDarkColors.primary
      : YantingColors.primary;
  final primaryForeground = brightness == Brightness.dark
      ? YantingDarkColors.primaryForeground
      : YantingColors.primaryForeground;
  final secondary = brightness == Brightness.dark
      ? YantingDarkColors.secondary
      : YantingColors.secondary;
  final secondaryForeground = brightness == Brightness.dark
      ? YantingDarkColors.secondaryForeground
      : YantingColors.secondaryForeground;
  final link = brightness == Brightness.dark
      ? YantingDarkColors.link
      : YantingColors.link;
  final card = brightness == Brightness.dark
      ? YantingDarkColors.card
      : YantingColors.card;
  final foreground = brightness == Brightness.dark
      ? YantingDarkColors.foreground
      : YantingColors.foreground;
  final destructive = brightness == Brightness.dark
      ? YantingDarkColors.destructive
      : YantingColors.destructive;
  final border = brightness == Brightness.dark
      ? YantingDarkColors.border
      : YantingColors.border;
  final background = brightness == Brightness.dark
      ? YantingDarkColors.background
      : YantingColors.background;
  final mutedForeground = brightness == Brightness.dark
      ? YantingDarkColors.mutedForeground
      : YantingColors.mutedForeground;
  final input = brightness == Brightness.dark
      ? YantingDarkColors.input
      : YantingColors.input;
  final scheme = ColorScheme.fromSeed(
    seedColor: primary,
    brightness: brightness,
    primary: primary,
    onPrimary: primaryForeground,
    secondary: secondary,
    onSecondary: secondaryForeground,
    tertiary: link,
    surface: card,
    onSurface: foreground,
    error: destructive,
    outline: border,
  );
  return ThemeData(
    useMaterial3: true,
    colorScheme: scheme,
    fontFamily: YantingText.fontFamily,
    fontFamilyFallback: YantingText.fontFallback,
    brightness: brightness,
    scaffoldBackgroundColor: background,
    appBarTheme: AppBarTheme(
      backgroundColor: background,
      foregroundColor: foreground,
      elevation: 0,
      centerTitle: false,
      titleTextStyle: YantingText.sectionTitle,
      surfaceTintColor: Colors.transparent,
    ),
    cardTheme: CardThemeData(
      color: card,
      elevation: 0,
      margin: EdgeInsets.zero,
      shape: RoundedRectangleBorder(
        borderRadius: const BorderRadius.all(Radius.circular(YantingRadius.xl)),
        side: BorderSide(color: border),
      ),
    ),
    dividerTheme: DividerThemeData(
      color: border,
      thickness: 1,
      space: 1,
    ),
    inputDecorationTheme: InputDecorationTheme(
      filled: true,
      fillColor: background,
      hintStyle: YantingText.body.copyWith(color: mutedForeground),
      contentPadding: const EdgeInsets.symmetric(horizontal: 14),
      border: OutlineInputBorder(
        borderRadius: BorderRadius.circular(YantingRadius.md),
        borderSide: BorderSide(color: input),
      ),
      enabledBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(YantingRadius.md),
        borderSide: BorderSide(color: input),
      ),
      focusedBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(YantingRadius.md),
        borderSide: BorderSide(color: foreground),
      ),
    ),
    snackBarTheme: SnackBarThemeData(
      backgroundColor: foreground,
      contentTextStyle: YantingText.body.copyWith(color: background),
      behavior: SnackBarBehavior.floating,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(YantingRadius.md),
      ),
    ),
    navigationBarTheme: NavigationBarThemeData(
      backgroundColor: background,
      indicatorColor: Colors.transparent,
      labelTextStyle: WidgetStateProperty.resolveWith(
        (states) => YantingText.meta.copyWith(
          color: states.contains(WidgetState.selected)
              ? foreground
              : mutedForeground,
          fontSize: 11,
          fontWeight: states.contains(WidgetState.selected)
              ? FontWeight.w600
              : FontWeight.w400,
        ),
      ),
      iconTheme: WidgetStateProperty.resolveWith(
        (states) => IconThemeData(
          color: states.contains(WidgetState.selected)
              ? foreground
              : mutedForeground,
        ),
      ),
    ),
    textTheme: const TextTheme(
      headlineSmall: YantingText.appTitle,
      titleLarge: YantingText.sectionTitle,
      titleMedium: YantingText.cardTitle,
      bodyLarge: YantingText.body,
      bodyMedium: YantingText.sub,
      bodySmall: YantingText.meta,
      labelLarge: YantingText.chip,
      labelSmall: YantingText.badge,
    ),
  );
}