import 'package:flutter/material.dart';

import '../domain/app_settings.dart';

const river = Color(0xFF348F91);
const ink = Color(0xFF183F43);
const canvas = Color(0xFFF3F7F6);
const coursePalette = [
  Color(0xFFDDEEEF),
  Color(0xFFE3E7F6),
  Color(0xFFF6E7D6),
  Color(0xFFE6EDDE),
  Color(0xFFF3DFE7),
  Color(0xFFE6E3F4),
];
Color courseColor(String id, AppSettings settings) =>
    settings.colorMode == ColorMode.single
    ? Color(settings.singleColorArgb).withValues(alpha: 0.18)
    : coursePalette[id.codeUnits.fold<int>(0, (a, b) => a + b) %
          coursePalette.length];
ThemeData hepanTheme() => ThemeData(
  useMaterial3: true,
  colorScheme: ColorScheme.fromSeed(seedColor: river, surface: Colors.white),
  scaffoldBackgroundColor: canvas,
  textTheme: ThemeData.light().textTheme.apply(
    bodyColor: ink,
    displayColor: ink,
  ),
  appBarTheme: const AppBarTheme(
    backgroundColor: canvas,
    foregroundColor: ink,
    centerTitle: false,
    elevation: 0,
  ),
  inputDecorationTheme: InputDecorationTheme(
    filled: true,
    fillColor: canvas,
    border: OutlineInputBorder(
      borderRadius: BorderRadius.circular(14),
      borderSide: BorderSide.none,
    ),
  ),
  filledButtonTheme: FilledButtonThemeData(
    style: FilledButton.styleFrom(
      backgroundColor: river,
      foregroundColor: Colors.white,
      padding: const EdgeInsets.symmetric(horizontal: 22, vertical: 15),
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
    ),
  ),
);

class SurfaceCard extends StatelessWidget {
  const SurfaceCard({
    super.key,
    required this.child,
    this.padding = const EdgeInsets.all(20),
  });
  final Widget child;
  final EdgeInsets padding;
  @override
  Widget build(BuildContext context) => Container(
    padding: padding,
    decoration: BoxDecoration(
      color: Colors.white.withValues(alpha: 0.92),
      borderRadius: BorderRadius.circular(24),
      border: Border.all(color: Colors.white),
      boxShadow: [
        BoxShadow(
          color: ink.withValues(alpha: 0.035),
          blurRadius: 20,
          offset: const Offset(0, 5),
        ),
      ],
    ),
    child: Material(type: MaterialType.transparency, child: child),
  );
}