import 'package:flutter/material.dart';

abstract final class FikoRenkler {
  static const neonMor = Color(0xFF9D4EDD);
  static const neonCyan = Color(0xFF00E5FF);
  static const neonPembe = Color(0xFFFF2E93);
  static const neonYesil = Color(0xFF39FF88);
  static const neonAmber = Color(0xFFFFB300);

  static const koyuZemin = Color(0xFF0B0D14);
  static const koyuYuzey = Color(0xFF141826);
  static const koyuKart = Color(0xFF1A1F32);
  static const koyuCizgi = Color(0xFF2A3050);

  static const acikZemin = Color(0xFFF3F4FA);
  static const acikYuzey = Color(0xFFFFFFFF);
  static const acikKart = Color(0xFFF8F9FF);
  static const acikCizgi = Color(0xFFDDE1F0);
}

/// Null-fontSize'lı rolleri bozmadan tüm tipografiyi [k] oranında ölçekler.
/// (TextTheme.apply(fontSizeFactor:) null fontSize'da assertion atar.)
TextTheme _kompaktTipo(TextTheme t, double k) {
  TextStyle? f(TextStyle? s) =>
      s == null || s.fontSize == null ? s : s.copyWith(fontSize: s.fontSize! * k);
  return t.copyWith(
    displayLarge: f(t.displayLarge),
    displayMedium: f(t.displayMedium),
    displaySmall: f(t.displaySmall),
    headlineLarge: f(t.headlineLarge),
    headlineMedium: f(t.headlineMedium),
    headlineSmall: f(t.headlineSmall),
    titleLarge: f(t.titleLarge),
    titleMedium: f(t.titleMedium),
    titleSmall: f(t.titleSmall),
    bodyLarge: f(t.bodyLarge),
    bodyMedium: f(t.bodyMedium),
    bodySmall: f(t.bodySmall),
    labelLarge: f(t.labelLarge),
    labelMedium: f(t.labelMedium),
    labelSmall: f(t.labelSmall),
  );
}

abstract final class FikoTema {
  static ThemeData koyu() => _olustur(
        parlaklik: Brightness.dark,
        zemin: FikoRenkler.koyuZemin,
        yuzey: FikoRenkler.koyuYuzey,
        kart: FikoRenkler.koyuKart,
        cizgi: FikoRenkler.koyuCizgi,
      );

  static ThemeData acik() => _olustur(
        parlaklik: Brightness.light,
        zemin: FikoRenkler.acikZemin,
        yuzey: FikoRenkler.acikYuzey,
        kart: FikoRenkler.acikKart,
        cizgi: FikoRenkler.acikCizgi,
      );

  static ThemeData _olustur({
    required Brightness parlaklik,
    required Color zemin,
    required Color yuzey,
    required Color kart,
    required Color cizgi,
  }) {
    final koyu = parlaklik == Brightness.dark;
    final sema = ColorScheme.fromSeed(
      seedColor: FikoRenkler.neonMor,
      brightness: parlaklik,
      surface: yuzey,
      primary: FikoRenkler.neonMor,
      secondary: FikoRenkler.neonCyan,
      tertiary: FikoRenkler.neonPembe,
      error: const Color(0xFFFF5370),
    );
    final base = ThemeData(brightness: parlaklik);
    return ThemeData(
      useMaterial3: true,
      colorScheme: sema,
      scaffoldBackgroundColor: zemin,
      canvasColor: yuzey,
      dividerColor: cizgi,
      visualDensity: VisualDensity.compact,
      // Kompakt tipografi — Ant yoğunluğu. fontSizeFactor null-fontSize'lı
      // rollerde assertion atıyor; null-güvenli ölçekleme.
      textTheme: _kompaktTipo(base.textTheme, 0.92),
      cardTheme: CardThemeData(
        color: kart,
        // Şekil-zemin ayrımı için yumuşak gölge (denetim: flat kart sorunu).
        elevation: 3,
        shadowColor: koyu ? Colors.black : const Color(0xFF4B4B78),
        surfaceTintColor: Colors.transparent,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12),
          side: BorderSide(color: cizgi),
        ),
        margin: EdgeInsets.zero,
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: koyu ? FikoRenkler.koyuYuzey : FikoRenkler.acikKart,
        isDense: true,
        contentPadding:
            const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(8),
          borderSide: BorderSide(color: cizgi),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(8),
          borderSide: BorderSide(color: cizgi),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(8),
          borderSide: const BorderSide(color: FikoRenkler.neonMor, width: 1.4),
        ),
        labelStyle: const TextStyle(fontSize: 12.5),
        hintStyle: const TextStyle(fontSize: 12),
      ),
      chipTheme: ChipThemeData(
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(8),
          side: BorderSide(color: cizgi),
        ),
        backgroundColor: yuzey,
        selectedColor: FikoRenkler.neonMor.withValues(alpha: 0.22),
        labelStyle: const TextStyle(fontSize: 11.5),
        padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 2),
      ),
      sliderTheme: const SliderThemeData(
        showValueIndicator: ShowValueIndicator.onDrag,
        trackHeight: 2.5,
      ),
      tooltipTheme: TooltipThemeData(
        decoration: BoxDecoration(
          color: kart,
          borderRadius: BorderRadius.circular(8),
          border: Border.all(color: cizgi),
        ),
        textStyle: TextStyle(
          color: koyu ? Colors.white : Colors.black87,
          fontSize: 12,
        ),
      ),
      scrollbarTheme: ScrollbarThemeData(
        thumbVisibility: const WidgetStatePropertyAll(true),
        thickness: const WidgetStatePropertyAll(6),
        radius: const Radius.circular(3),
      ),
      pageTransitionsTheme: const PageTransitionsTheme(builders: {
        TargetPlatform.windows: FadeForwardsPageTransitionsBuilder(),
      }),
    );
  }
}