import 'package:flutter/material.dart';

class AppTheme {
  // ─── Color Palette ─────────────────────────────────────────────────────────
  static const Color primary = Color(0xFF2563EB);
  static const Color primaryDark = Color(0xFF1D4ED8);
  static const Color sidebarBg = Color(0xFF0F172A);
  static const Color sidebarSelected = Color(0xFF1E3A8A);
  static const Color sidebarText = Color(0xFFCBD5E1);
  static const Color sidebarTextActive = Color(0xFFFFFFFF);
  static const Color background = Color(0xFFF1F5F9);
  static const Color surface = Color(0xFFFFFFFF);
  static const Color textPrimary = Color(0xFF0F172A);
  static const Color textSecondary = Color(0xFF64748B);
  static const Color success = Color(0xFF10B981);
  static const Color warning = Color(0xFFF59E0B);
  static const Color danger = Color(0xFFEF4444);
  static const Color border = Color(0xFFE2E8F0);

  // ─── Role Colors ───────────────────────────────────────────────────────────
  static Color roleColor(String role) {
    switch (role) {
      case 'admin':
        return const Color(0xFF7C3AED);
      case 'group_manager':
        return const Color(0xFF0891B2);
      default:
        return const Color(0xFF64748B);
    }
  }

  // ─── Theme Data ────────────────────────────────────────────────────────────
  static ThemeData get theme => ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(
          seedColor: primary,
          brightness: Brightness.light,
          surface: surface,
        ),
        scaffoldBackgroundColor: background,
        fontFamily: 'Vazirmatn',
        appBarTheme: const AppBarTheme(
          backgroundColor: surface,
          foregroundColor: textPrimary,
          elevation: 0,
          scrolledUnderElevation: 1,
          shadowColor: border,
        ),
        cardTheme: CardThemeData(
          elevation: 0,
          color: surface,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12),
            side: const BorderSide(color: border),
          ),
        ),
        inputDecorationTheme: InputDecorationTheme(
          filled: true,
          fillColor: const Color(0xFFF8FAFC),
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10),
            borderSide: const BorderSide(color: border),
          ),
          enabledBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10),
            borderSide: const BorderSide(color: border),
          ),
          focusedBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10),
            borderSide: const BorderSide(color: primary, width: 2),
          ),
          errorBorder: OutlineInputBorder(
            borderRadius: BorderRadius.circular(10),
            borderSide: const BorderSide(color: danger),
          ),
          contentPadding:
              const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
        ),
        elevatedButtonTheme: ElevatedButtonThemeData(
          style: ElevatedButton.styleFrom(
            backgroundColor: primary,
            foregroundColor: Colors.white,
            elevation: 0,
            padding:
                const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(10),
            ),
            textStyle: const TextStyle(
              fontSize: 14,
              fontWeight: FontWeight.w600,
            ),
          ),
        ),
        outlinedButtonTheme: OutlinedButtonThemeData(
          style: OutlinedButton.styleFrom(
            foregroundColor: primary,
            side: const BorderSide(color: primary),
            padding:
                const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(10),
            ),
          ),
        ),
        textButtonTheme: TextButtonThemeData(
          style: TextButton.styleFrom(
            foregroundColor: primary,
          ),
        ),
        dialogTheme: DialogThemeData(
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(16),
          ),
          elevation: 8,
        ),
        snackBarTheme: SnackBarThemeData(
          behavior: SnackBarBehavior.floating,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(10),
          ),
        ),
        dataTableTheme: DataTableThemeData(
          headingRowColor: WidgetStateProperty.all(const Color(0xFFF8FAFC)),
          dataRowColor: WidgetStateProperty.resolveWith((states) {
            if (states.contains(WidgetState.hovered)) {
              return const Color(0xFFF1F5F9);
            }
            return surface;
          }),
          headingTextStyle: const TextStyle(
            color: textSecondary,
            fontWeight: FontWeight.w600,
            fontSize: 13,
          ),
          dataTextStyle: const TextStyle(
            color: textPrimary,
            fontSize: 14,
          ),
          dividerThickness: 1,
          columnSpacing: 24,
        ),
      );
}