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

/// shadcn/ui 스타일 테마 시스템
class ShadcnTheme {
  // shadcn/ui 색상 시스템
  static const Color background = Color(0xFFFFFFFF);
  static const Color foreground = Color(0xFF020817);
  static const Color card = Color(0xFFFFFFFF);
  static const Color cardForeground = Color(0xFF020817);
  static const Color popover = Color(0xFFFFFFFF);
  static const Color popoverForeground = Color(0xFF020817);
  static const Color primary = Color(0xFF0F172A);
  static const Color primaryForeground = Color(0xFFF8FAFC);
  static const Color secondary = Color(0xFFF1F5F9);
  static const Color secondaryForeground = Color(0xFF0F172A);
  static const Color muted = Color(0xFFF1F5F9);
  static const Color mutedForeground = Color(0xFF64748B);
  static const Color accent = Color(0xFFF1F5F9);
  static const Color accentForeground = Color(0xFF0F172A);
  static const Color destructive = Color(0xFFEF4444);
  static const Color destructiveForeground = Color(0xFFF8FAFC);
  static const Color border = Color(0xFFE2E8F0);
  static const Color input = Color(0xFFE2E8F0);
  static const Color ring = Color(0xFF020817);
  static const Color radius = Color(0xFF000000); // 사용하지 않음

  // 그라데이션 색상
  static const Color gradient1 = Color(0xFF6366F1);
  static const Color gradient2 = Color(0xFF8B5CF6);
  static const Color gradient3 = Color(0xFFEC4899);

  // 상태 색상
  static const Color success = Color(0xFF10B981);
  static const Color warning = Color(0xFFF59E0B);
  static const Color error = Color(0xFFEF4444);
  static const Color info = Color(0xFF3B82F6);

  // 그림자 설정
  static List<BoxShadow> get cardShadow => [
    BoxShadow(
      color: Colors.black.withOpacity(0.05),
      blurRadius: 6,
      offset: const Offset(0, 2),
    ),
    BoxShadow(
      color: Colors.black.withOpacity(0.1),
      blurRadius: 20,
      offset: const Offset(0, 10),
    ),
  ];

  static List<BoxShadow> get buttonShadow => [
    BoxShadow(
      color: Colors.black.withOpacity(0.1),
      blurRadius: 3,
      offset: const Offset(0, 1),
    ),
  ];

  // 간격 시스템
  static const double spacing1 = 4.0;
  static const double spacing2 = 8.0;
  static const double spacing3 = 12.0;
  static const double spacing4 = 16.0;
  static const double spacing5 = 20.0;
  static const double spacing6 = 24.0;
  static const double spacing8 = 32.0;
  static const double spacing10 = 40.0;
  static const double spacing12 = 48.0;
  static const double spacing16 = 64.0;
  static const double spacing20 = 80.0;

  // 라운드 설정
  static const double radiusNone = 0.0;
  static const double radiusSm = 2.0;
  static const double radiusMd = 6.0;
  static const double radiusLg = 8.0;
  static const double radiusXl = 12.0;
  static const double radius2xl = 16.0;
  static const double radius3xl = 24.0;
  static const double radiusFull = 9999.0;

  // 타이포그래피 시스템
  static TextStyle get headingH1 => GoogleFonts.inter(
    fontSize: 36,
    fontWeight: FontWeight.w800,
    color: foreground,
    letterSpacing: -0.02,
  );

  static TextStyle get headingH2 => GoogleFonts.inter(
    fontSize: 30,
    fontWeight: FontWeight.w700,
    color: foreground,
    letterSpacing: -0.02,
  );

  static TextStyle get headingH3 => GoogleFonts.inter(
    fontSize: 24,
    fontWeight: FontWeight.w600,
    color: foreground,
    letterSpacing: -0.01,
  );

  static TextStyle get headingH4 => GoogleFonts.inter(
    fontSize: 20,
    fontWeight: FontWeight.w600,
    color: foreground,
    letterSpacing: -0.01,
  );

  static TextStyle get bodyLarge => GoogleFonts.inter(
    fontSize: 16,
    fontWeight: FontWeight.w400,
    color: foreground,
    letterSpacing: 0,
  );

  static TextStyle get bodyMedium => GoogleFonts.inter(
    fontSize: 14,
    fontWeight: FontWeight.w400,
    color: foreground,
    letterSpacing: 0,
  );

  static TextStyle get bodySmall => GoogleFonts.inter(
    fontSize: 12,
    fontWeight: FontWeight.w400,
    color: mutedForeground,
    letterSpacing: 0,
  );

  static TextStyle get bodyMuted => GoogleFonts.inter(
    fontSize: 14,
    fontWeight: FontWeight.w400,
    color: mutedForeground,
    letterSpacing: 0,
  );

  static TextStyle get labelLarge => GoogleFonts.inter(
    fontSize: 14,
    fontWeight: FontWeight.w500,
    color: foreground,
    letterSpacing: 0,
  );

  static TextStyle get labelMedium => GoogleFonts.inter(
    fontSize: 12,
    fontWeight: FontWeight.w500,
    color: foreground,
    letterSpacing: 0,
  );

  static TextStyle get labelSmall => GoogleFonts.inter(
    fontSize: 10,
    fontWeight: FontWeight.w500,
    color: mutedForeground,
    letterSpacing: 0,
  );

  // Flutter 테마 데이터
  static ThemeData get lightTheme {
    return ThemeData(
      useMaterial3: true,
      colorScheme: const ColorScheme.light(
        primary: primary,
        secondary: secondary,
        surface: background,
        surfaceContainerHighest: card,
        onSurface: foreground,
        onPrimary: primaryForeground,
        onSecondary: secondaryForeground,
        error: destructive,
        onError: destructiveForeground,
        outline: border,
        outlineVariant: input,
      ),
      scaffoldBackgroundColor: background,
      textTheme: TextTheme(
        headlineLarge: headingH1,
        headlineMedium: headingH2,
        headlineSmall: headingH3,
        titleLarge: headingH4,
        bodyLarge: bodyLarge,
        bodyMedium: bodyMedium,
        bodySmall: bodySmall,
        labelLarge: labelLarge,
        labelMedium: labelMedium,
        labelSmall: labelSmall,
      ),
      appBarTheme: AppBarTheme(
        backgroundColor: background,
        foregroundColor: foreground,
        elevation: 0,
        scrolledUnderElevation: 1,
        shadowColor: Colors.black.withOpacity(0.1),
        surfaceTintColor: Colors.transparent,
        titleTextStyle: headingH4,
        iconTheme: const IconThemeData(color: foreground),
      ),
      cardTheme: CardThemeData(
        color: card,
        elevation: 0,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(radiusLg),
          side: const BorderSide(color: border, width: 1),
        ),
        shadowColor: Colors.black.withOpacity(0.05),
      ),
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
          backgroundColor: primary,
          foregroundColor: primaryForeground,
          elevation: 0,
          shadowColor: Colors.transparent,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(radiusMd),
          ),
          padding: const EdgeInsets.symmetric(
            horizontal: spacing4,
            vertical: spacing2,
          ),
          textStyle: labelMedium,
        ),
      ),
      outlinedButtonTheme: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          foregroundColor: foreground,
          side: const BorderSide(color: border),
          elevation: 0,
          shadowColor: Colors.transparent,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(radiusMd),
          ),
          padding: const EdgeInsets.symmetric(
            horizontal: spacing4,
            vertical: spacing2,
          ),
          textStyle: labelMedium,
        ),
      ),
      textButtonTheme: TextButtonThemeData(
        style: TextButton.styleFrom(
          foregroundColor: foreground,
          elevation: 0,
          shadowColor: Colors.transparent,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(radiusMd),
          ),
          padding: const EdgeInsets.symmetric(
            horizontal: spacing4,
            vertical: spacing2,
          ),
          textStyle: labelMedium,
        ),
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: background,
        contentPadding: const EdgeInsets.symmetric(
          horizontal: spacing3,
          vertical: spacing2,
        ),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(radiusMd),
          borderSide: const BorderSide(color: input),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(radiusMd),
          borderSide: const BorderSide(color: input),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(radiusMd),
          borderSide: const BorderSide(color: ring, width: 2),
        ),
        errorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(radiusMd),
          borderSide: const BorderSide(color: destructive),
        ),
        focusedErrorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(radiusMd),
          borderSide: const BorderSide(color: destructive, width: 2),
        ),
        hintStyle: bodyMedium.copyWith(color: mutedForeground),
        labelStyle: labelMedium,
      ),
      dividerTheme: const DividerThemeData(color: border, thickness: 1),
    );
  }
}