import 'dart:io';

import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pasteboard/pasteboard.dart';
import 'package:path/path.dart' as p;
import 'package:path_provider/path_provider.dart';

import '../../durum/ace_lora_durumu.dart';
import '../../durum/karakter_durumu.dart';
import '../../durum/lora_durumu.dart';
import '../../servisler/ace/ace_lora_api_istemci.dart';
import 'lora_paneli.dart';
import 'yuz_seti_dialog.dart';

/// Karakter seçici/yönetici panel — Görsel formunun en üstünde.
class KarakterPaneli extends ConsumerWidget {
  /// Aktif karakter ayarlandığında form'a yüz ref + tanım uygulamak için
  final void Function(Karakter karakter) onKarakterUygula;
  const KarakterPaneli({super.key, required this.onKarakterUygula});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final theme = Theme.of(context);
    final karakterler = ref.watch(karakterlerProvider);
    final aktifId = ref.watch(aktifKarakterIdProvider);

    return Container(
      padding: const EdgeInsets.all(10),
      decoration: BoxDecoration(
        color: Colors.deepPurple.withValues(alpha: 0.06),
        borderRadius: BorderRadius.circular(10),
        border: Border.all(
          color: Colors.deepPurple.withValues(alpha: 0.25),
        ),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              const Icon(Icons.person_pin_circle,
                  size: 16, color: Colors.deepPurple),
              const SizedBox(width: 6),
              Text('Karakter',
                  style: theme.textTheme.labelMedium?.copyWith(
                    color: Colors.deepPurple,
                    fontWeight: FontWeight.w600,
                  )),
              const SizedBox(width: 6),
              Tooltip(
                message:
                    'Bir karakter (yüz + tanım) kaydet, sonra istediğin '
                    'kıyafet/saç/mekan ile farklı görsellerde kullan.',
                child: Icon(Icons.info_outline,
                    size: 12, color: theme.colorScheme.outline),
              ),
              const Spacer(),
              if (karakterler.isNotEmpty)
                Text('${karakterler.length} karakter',
                    style: theme.textTheme.labelSmall?.copyWith(
                      color: theme.colorScheme.outline,
                      fontSize: 10,
                    )),
              TextButton.icon(
                icon: const Icon(Icons.add, size: 14),
                label: const Text('Yeni',
                    style: TextStyle(fontSize: 11)),
                style: TextButton.styleFrom(
                  visualDensity: VisualDensity.compact,
                  padding: const EdgeInsets.symmetric(horizontal: 6),
                ),
                onPressed: () =>
                    _karakterDuzenleDialog(context, ref, null),
              ),
            ],
          ),
          const SizedBox(height: 6),
          if (karakterler.isEmpty)
            Padding(
              padding: const EdgeInsets.all(8),
              child: Text(
                'Henüz karakter yok. "Yeni" ile bir karakter oluştur '
                '(isim + yüz fotoğrafı + kısa tanım).',
                style: theme.textTheme.labelSmall?.copyWith(
                  color: theme.colorScheme.outline,
                ),
              ),
            )
          else
            SizedBox(
              height: 90,
              child: ListView.separated(
                scrollDirection: Axis.horizontal,
                separatorBuilder: (_, __) => const SizedBox(width: 6),
                itemCount: karakterler.length,
                itemBuilder: (_, i) {
                  final k = karakterler[i];
                  final aktif = k.id == aktifId;
                  return _KarakterKarti(
                    karakter: k,
                    aktif: aktif,
                    onSec: () {
                      if (aktif) {
                        ref.read(aktifKarakterIdProvider.notifier).state =
                            null;
                      } else {
                        ref.read(aktifKarakterIdProvider.notifier).state =
                            k.id;
                        onKarakterUygula(k);
                      }
                    },
                    onDuzenle: () =>
                        _karakterDuzenleDialog(context, ref, k),
                  );
                },
              ),
            ),
        ],
      ),
    );
  }

  Future<void> _karakterDuzenleDialog(
    BuildContext context,
    WidgetRef ref,
    Karakter? mevcut,
  ) async {
    final isimCtrl = TextEditingController(text: mevcut?.isim ?? '');
    final tanimCtrl = TextEditingController(text: mevcut?.tanim ?? '');
    final notCtrl = TextEditingController(text: mevcut?.notlar ?? '');
    String? yuzYolu = mevcut?.yuzRefYolu;
    String cinsiyet = mevcut?.cinsiyet ?? 'kişi';
    // Ses alanları — RVC voice clone
    String? sesRefYolu = mevcut?.sesRefYolu;
    String? sesModelYolu = mevcut?.sesModelYolu;
    String? sesIndexYolu = mevcut?.sesIndexYolu;
    bool sesRefSilindi = false;
    bool sesModelIndexSilindi = false;

    final sonuc = await showDialog<bool>(
      context: context,
      builder: (ctx) => StatefulBuilder(
        builder: (ctx, setS) => AlertDialog(
          title: Row(
            children: [
              const Icon(Icons.person_pin_circle,
                  color: Colors.deepPurple),
              const SizedBox(width: 8),
              Text(mevcut == null ? 'Yeni Karakter' : 'Karakter Düzenle'),
            ],
          ),
          content: SizedBox(
            width: 460,
            child: SingleChildScrollView(
              child: Column(
                mainAxisSize: MainAxisSize.min,
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: [
                  // Yüz fotoğrafı
                  Row(
                    children: [
                      Container(
                        width: 80,
                        height: 80,
                        decoration: BoxDecoration(
                          border: Border.all(
                              color: Theme.of(ctx).dividerColor),
                          borderRadius: BorderRadius.circular(40),
                          color: Theme.of(ctx)
                              .colorScheme
                              .surfaceContainerHighest,
                        ),
                        clipBehavior: Clip.antiAlias,
                        child: yuzYolu != null && File(yuzYolu!).existsSync()
                            ? Image.file(File(yuzYolu!),
                                fit: BoxFit.cover)
                            : Icon(Icons.person,
                                size: 40,
                                color: Theme.of(ctx).colorScheme.outline),
                      ),
                      const SizedBox(width: 12),
                      Expanded(
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text('Yüz Fotoğrafı',
                                style: Theme.of(ctx)
                                    .textTheme
                                    .labelMedium),
                            const SizedBox(height: 4),
                            Wrap(
                              spacing: 6,
                              children: [
                                OutlinedButton.icon(
                                  icon: const Icon(Icons.folder_open,
                                      size: 14),
                                  label: const Text('Dosyadan',
                                      style: TextStyle(fontSize: 11)),
                                  onPressed: () async {
                                    final r = await FilePicker.platform
                                        .pickFiles(
                                      type: FileType.custom,
                                      allowedExtensions: const [
                                        'png',
                                        'jpg',
                                        'jpeg',
                                        'webp',
                                      ],
                                    );
                                    final yol =
                                        r?.files.firstOrNull?.path;
                                    if (yol != null) {
                                      setS(() => yuzYolu = yol);
                                    }
                                  },
                                ),
                                OutlinedButton.icon(
                                  icon: const Icon(Icons.content_paste,
                                      size: 14),
                                  label: const Text('Panodan',
                                      style: TextStyle(fontSize: 11)),
                                  onPressed: () async {
                                    final bytes =
                                        await Pasteboard.image;
                                    if (bytes == null) return;
                                    final docs =
                                        await getApplicationDocumentsDirectory();
                                    final klasor = Directory(p.join(
                                        docs.path,
                                        'FikoYT-VideoStudyo',
                                        'panodan'));
                                    if (!await klasor.exists()) {
                                      await klasor.create(
                                          recursive: true);
                                    }
                                    final hedef = p.join(klasor.path,
                                        'pano_${DateTime.now().millisecondsSinceEpoch}.png');
                                    await File(hedef)
                                        .writeAsBytes(bytes);
                                    setS(() => yuzYolu = hedef);
                                  },
                                ),
                              ],
                            ),
                          ],
                        ),
                      ),
                    ],
                  ),
                  const SizedBox(height: 12),
                  // Ses Referansı bölümü
                  Container(
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: Colors.teal.withValues(alpha: 0.06),
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(
                          color: Colors.teal.withValues(alpha: 0.35)),
                    ),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          children: [
                            const Icon(Icons.mic_none,
                                size: 16, color: Colors.teal),
                            const SizedBox(width: 6),
                            Text('Ses Referansı (10-30sn vokal)',
                                style: Theme.of(ctx)
                                    .textTheme
                                    .labelMedium
                                    ?.copyWith(
                                      fontWeight: FontWeight.w600,
                                      color: Colors.teal.shade800,
                                    )),
                            const Spacer(),
                            if (sesRefYolu != null && !sesRefSilindi)
                              const Icon(Icons.check_circle,
                                  size: 14, color: Colors.green),
                          ],
                        ),
                        const SizedBox(height: 6),
                        if (sesRefYolu != null && !sesRefSilindi)
                          Container(
                            padding: const EdgeInsets.symmetric(
                                horizontal: 8, vertical: 4),
                            decoration: BoxDecoration(
                              color: Theme.of(ctx)
                                  .colorScheme
                                  .surfaceContainerHighest,
                              borderRadius: BorderRadius.circular(4),
                            ),
                            child: Row(
                              children: [
                                const Icon(Icons.audiotrack,
                                    size: 14, color: Colors.teal),
                                const SizedBox(width: 6),
                                Expanded(
                                  child: Text(
                                    p.basename(sesRefYolu!),
                                    style: const TextStyle(fontSize: 11),
                                    overflow: TextOverflow.ellipsis,
                                  ),
                                ),
                              ],
                            ),
                          ),
                        const SizedBox(height: 6),
                        Wrap(
                          spacing: 6,
                          children: [
                            OutlinedButton.icon(
                              icon: const Icon(Icons.folder_open, size: 14),
                              label: const Text('Dosyadan seç',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: () async {
                                final r = await FilePicker.platform.pickFiles(
                                  type: FileType.custom,
                                  allowedExtensions: const [
                                    'mp3',
                                    'wav',
                                    'flac',
                                    'ogg',
                                    'm4a',
                                  ],
                                );
                                final yol = r?.files.firstOrNull?.path;
                                if (yol != null) {
                                  setS(() {
                                    sesRefYolu = yol;
                                    sesRefSilindi = false;
                                  });
                                }
                              },
                            ),
                            if (sesRefYolu != null && !sesRefSilindi)
                              OutlinedButton.icon(
                                icon: const Icon(Icons.delete_outline,
                                    size: 14, color: Colors.red),
                                label: const Text('Sil',
                                    style: TextStyle(
                                        fontSize: 11, color: Colors.red)),
                                onPressed: () {
                                  setS(() {
                                    sesRefSilindi = true;
                                    sesRefYolu = null;
                                  });
                                },
                              ),
                          ],
                        ),
                      ],
                    ),
                  ),
                  const SizedBox(height: 10),
                  // RVC Ses Modeli (opsiyonel — eğitilmiş)
                  Container(
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: Colors.indigo.withValues(alpha: 0.06),
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(
                          color: Colors.indigo.withValues(alpha: 0.35)),
                    ),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          children: [
                            const Icon(Icons.smart_toy_outlined,
                                size: 16, color: Colors.indigo),
                            const SizedBox(width: 6),
                            Text('RVC Ses Modeli (opsiyonel — eğitilmiş)',
                                style: Theme.of(ctx)
                                    .textTheme
                                    .labelMedium
                                    ?.copyWith(
                                      fontWeight: FontWeight.w600,
                                      color: Colors.indigo.shade800,
                                    )),
                          ],
                        ),
                        const SizedBox(height: 6),
                        if (sesModelYolu != null && !sesModelIndexSilindi)
                          Padding(
                            padding: const EdgeInsets.only(bottom: 4),
                            child: Row(
                              children: [
                                const Icon(Icons.layers,
                                    size: 12, color: Colors.indigo),
                                const SizedBox(width: 4),
                                Expanded(
                                  child: Text(
                                    '.pth: ${p.basename(sesModelYolu!)}',
                                    style: const TextStyle(fontSize: 10),
                                    overflow: TextOverflow.ellipsis,
                                  ),
                                ),
                              ],
                            ),
                          ),
                        if (sesIndexYolu != null && !sesModelIndexSilindi)
                          Padding(
                            padding: const EdgeInsets.only(bottom: 4),
                            child: Row(
                              children: [
                                const Icon(Icons.dataset_outlined,
                                    size: 12, color: Colors.indigo),
                                const SizedBox(width: 4),
                                Expanded(
                                  child: Text(
                                    '.index: ${p.basename(sesIndexYolu!)}',
                                    style: const TextStyle(fontSize: 10),
                                    overflow: TextOverflow.ellipsis,
                                  ),
                                ),
                              ],
                            ),
                          ),
                        Wrap(
                          spacing: 6,
                          children: [
                            OutlinedButton.icon(
                              icon: const Icon(Icons.upload_file, size: 14),
                              label: const Text('.pth seç',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: () async {
                                final r = await FilePicker.platform.pickFiles(
                                  type: FileType.custom,
                                  allowedExtensions: const ['pth'],
                                );
                                final yol = r?.files.firstOrNull?.path;
                                if (yol != null) {
                                  setS(() {
                                    sesModelYolu = yol;
                                    sesModelIndexSilindi = false;
                                  });
                                }
                              },
                            ),
                            OutlinedButton.icon(
                              icon: const Icon(Icons.upload_file, size: 14),
                              label: const Text('.index seç',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: () async {
                                final r = await FilePicker.platform.pickFiles(
                                  type: FileType.custom,
                                  allowedExtensions: const ['index'],
                                );
                                final yol = r?.files.firstOrNull?.path;
                                if (yol != null) {
                                  setS(() {
                                    sesIndexYolu = yol;
                                    sesModelIndexSilindi = false;
                                  });
                                }
                              },
                            ),
                            if ((sesModelYolu != null ||
                                    sesIndexYolu != null) &&
                                !sesModelIndexSilindi)
                              OutlinedButton.icon(
                                icon: const Icon(Icons.delete_outline,
                                    size: 14, color: Colors.red),
                                label: const Text('İkisini de Sil',
                                    style: TextStyle(
                                        fontSize: 11, color: Colors.red)),
                                onPressed: () {
                                  setS(() {
                                    sesModelIndexSilindi = true;
                                    sesModelYolu = null;
                                    sesIndexYolu = null;
                                  });
                                },
                              ),
                          ],
                        ),
                      ],
                    ),
                  ),
                  const SizedBox(height: 10),
                  // ACE-Step Ses LoRA bölümü (şarkı/vokal eğitimi)
                  Container(
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: Colors.cyan.withValues(alpha: 0.06),
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(
                          color: Colors.cyan.withValues(alpha: 0.4)),
                    ),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          children: [
                            const Icon(Icons.music_note,
                                size: 16, color: Colors.cyan),
                            const SizedBox(width: 6),
                            Text('ACE-Step Ses LoRA (Şarkı/Vokal)',
                                style: Theme.of(ctx)
                                    .textTheme
                                    .labelMedium
                                    ?.copyWith(
                                      fontWeight: FontWeight.w600,
                                      color: Colors.cyan.shade800,
                                    )),
                            const Spacer(),
                            OutlinedButton.icon(
                              icon: const Icon(Icons.graphic_eq,
                                  size: 14),
                              label: const Text('Yeni LoRA Eğit',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: mevcut == null
                                  ? null
                                  : () => AceLoraEgitDialog.goster(
                                        ctx,
                                        karakter: mevcut,
                                      ),
                            ),
                          ],
                        ),
                        const SizedBox(height: 6),
                        Text(
                          'Bu karakterin sesinde şarkı/vokal üretmek için '
                          'LoRA eğit. Eğitim ~30-90 dk sürer (port 8003).',
                          style: Theme.of(ctx).textTheme.labelSmall?.copyWith(
                                color: Theme.of(ctx).colorScheme.outline,
                                fontSize: 10,
                              ),
                        ),
                        if (mevcut != null) ...[
                          const SizedBox(height: 10),
                          _KarakterAceLoraListesi(karakterId: mevcut.id),
                        ],
                      ],
                    ),
                  ),
                  const SizedBox(height: 16),
                  TextField(
                    controller: isimCtrl,
                    autofocus: mevcut == null,
                    decoration: const InputDecoration(
                      labelText: 'İsim',
                      border: OutlineInputBorder(),
                      isDense: true,
                      hintText: 'Ayşe, Ahmet, Karakter 1...',
                    ),
                  ),
                  const SizedBox(height: 12),
                  TextField(
                    controller: tanimCtrl,
                    minLines: 2,
                    maxLines: 4,
                    decoration: const InputDecoration(
                      labelText: 'Tanım (İngilizce öneriniyor)',
                      helperText:
                          'Prompt\'a otomatik eklenir. Görünüm tasviri.',
                      border: OutlineInputBorder(),
                      isDense: true,
                      hintText:
                          'young woman, brown eyes, slim, fair skin, mid-twenties',
                    ),
                  ),
                  const SizedBox(height: 12),
                  DropdownButtonFormField<String>(
                    value: cinsiyet,
                    decoration: const InputDecoration(
                      labelText: 'Cinsiyet',
                      border: OutlineInputBorder(),
                      isDense: true,
                    ),
                    items: const [
                      DropdownMenuItem(value: 'kadın', child: Text('Kadın')),
                      DropdownMenuItem(
                          value: 'erkek', child: Text('Erkek')),
                      DropdownMenuItem(value: 'kişi', child: Text('Kişi')),
                    ],
                    onChanged: (v) => setS(() => cinsiyet = v ?? 'kişi'),
                  ),
                  const SizedBox(height: 12),
                  TextField(
                    controller: notCtrl,
                    minLines: 1,
                    maxLines: 3,
                    decoration: const InputDecoration(
                      labelText: 'Notlar (opsiyonel)',
                      border: OutlineInputBorder(),
                      isDense: true,
                    ),
                  ),
                  const SizedBox(height: 16),
                  // LoRA eğitimi
                  Container(
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: Colors.amber.withValues(alpha: 0.08),
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(
                          color: Colors.amber.withValues(alpha: 0.4)),
                    ),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Row(
                          children: [
                            const Icon(Icons.school_outlined,
                                size: 16, color: Colors.amber),
                            const SizedBox(width: 6),
                            Text('LoRA Eğitimi',
                                style: Theme.of(ctx)
                                    .textTheme
                                    .labelMedium
                                    ?.copyWith(
                                      fontWeight: FontWeight.w600,
                                      color: Colors.amber.shade800,
                                    )),
                            const Spacer(),
                            OutlinedButton.icon(
                              icon: const Icon(Icons.add_photo_alternate,
                                  size: 14),
                              label: const Text('Yüz Seti',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: mevcut == null
                                  ? null
                                  : () =>
                                      _yuzSetiYonet(ctx, mevcut),
                            ),
                            const SizedBox(width: 4),
                            OutlinedButton.icon(
                              icon: const Icon(Icons.school,
                                  size: 14),
                              label: const Text('LoRA Eğit',
                                  style: TextStyle(fontSize: 11)),
                              onPressed: mevcut == null
                                  ? null
                                  : () => _loraEgitDialog(ctx, mevcut),
                            ),
                          ],
                        ),
                        const SizedBox(height: 6),
                        Text(
                          'Yüz seti hazırla → "LoRA Eğit" ile karakter LoRA\'sı '
                          'eğit (~30-60 dk). Birden fazla LoRA eğitebilirsin '
                          '(farklı versiyonlar). Çıktı: gorsel-uretim/loralar/',
                          style: Theme.of(ctx).textTheme.labelSmall?.copyWith(
                                color: Theme.of(ctx).colorScheme.outline,
                                fontSize: 10,
                              ),
                        ),
                        // Bu karaktere ait LoRA'lar
                        if (mevcut != null) ...[
                          const SizedBox(height: 10),
                          _KarakterLoraListesi(karakterId: mevcut.id),
                        ],
                      ],
                    ),
                  ),
                ],
              ),
            ),
          ),
          actions: [
            if (mevcut != null)
              TextButton.icon(
                icon: const Icon(Icons.delete_outline,
                    size: 16, color: Colors.red),
                label: const Text('Sil',
                    style: TextStyle(color: Colors.red)),
                onPressed: () async {
                  await ref
                      .read(karakterlerProvider.notifier)
                      .sil(mevcut.id);
                  if (ctx.mounted) Navigator.pop(ctx, true);
                },
              ),
            TextButton(
              onPressed: () => Navigator.pop(ctx, false),
              child: const Text('İptal'),
            ),
            FilledButton(
              onPressed: () async {
                if (isimCtrl.text.trim().isEmpty) return;
                if (mevcut == null) {
                  final yeni = await ref
                      .read(karakterlerProvider.notifier)
                      .ekle(
                        isim: isimCtrl.text.trim(),
                        tanim: tanimCtrl.text.trim(),
                        yuzKaynagi: yuzYolu,
                        cinsiyet: cinsiyet,
                        notlar: notCtrl.text.trim().isEmpty
                            ? null
                            : notCtrl.text.trim(),
                      );
                  // Ses alanları → guncelle ile (ekle ses kabul etmiyor)
                  if (sesRefYolu != null ||
                      sesModelYolu != null ||
                      sesIndexYolu != null) {
                    await ref.read(karakterlerProvider.notifier).guncelle(
                          yeni,
                          yeniSesRefKaynagi: sesRefYolu,
                          yeniSesModelKaynagi: sesModelYolu,
                          yeniSesIndexKaynagi: sesIndexYolu,
                        );
                  }
                } else {
                  mevcut
                    ..isim = isimCtrl.text.trim()
                    ..tanim = tanimCtrl.text.trim()
                    ..cinsiyet = cinsiyet
                    ..notlar = notCtrl.text.trim().isEmpty
                        ? null
                        : notCtrl.text.trim();
                  await ref.read(karakterlerProvider.notifier).guncelle(
                        mevcut,
                        yeniYuzKaynagi: yuzYolu != mevcut.yuzRefYolu
                            ? yuzYolu
                            : null,
                        yeniSesRefKaynagi:
                            (!sesRefSilindi && sesRefYolu != mevcut.sesRefYolu)
                                ? sesRefYolu
                                : null,
                        sesRefSil: sesRefSilindi,
                        yeniSesModelKaynagi: (!sesModelIndexSilindi &&
                                sesModelYolu != mevcut.sesModelYolu)
                            ? sesModelYolu
                            : null,
                        yeniSesIndexKaynagi: (!sesModelIndexSilindi &&
                                sesIndexYolu != mevcut.sesIndexYolu)
                            ? sesIndexYolu
                            : null,
                        sesModelIndexSil: sesModelIndexSilindi,
                      );
                }
                if (ctx.mounted) Navigator.pop(ctx, true);
              },
              child: const Text('Kaydet'),
            ),
          ],
        ),
      ),
    );
  }

  Future<void> _loraEgitDialog(BuildContext ctx, Karakter k) async {
    final docs = await getApplicationDocumentsDirectory();
    final veriKlasoru = p.join(
        docs.path, 'FikoYT-VideoStudyo', 'karakterler', '${k.id}_set');
    if (!ctx.mounted) return;
    // Backend'den base model listesini al — basit hard-coded liste
    const modeller = [
      (repo: 'SG161222/RealVisXL_V4.0', etiket: 'RealVisXL v4.0 (önerilir)'),
      (repo: 'SG161222/RealVisXL_V5.0', etiket: 'RealVisXL v5.0'),
      (repo: 'RunDiffusion/Juggernaut-XL-v9', etiket: 'Juggernaut XL v9'),
      (
        repo: 'stabilityai/stable-diffusion-xl-base-1.0',
        etiket: 'SDXL Base 1.0'
      ),
    ];
    await LoraEgitDialog.goster(
      ctx,
      karakter: k,
      veriKlasoruYolu: veriKlasoru,
      modelSecenekleri: modeller,
    );
  }

  Future<void> _yuzSetiYonet(BuildContext ctx, Karakter k) async {
    await yuzSetiDialogGoster(
      ctx,
      karakterId: k.id,
      karakterIsmi: k.isim,
    );
  }

}

/// Karakter düzenleme dialog'u içinde gösterilen — bu karaktere ait LoRA'ların
/// canlı listesi (eğitim ilerlemesi dahil).
class _KarakterLoraListesi extends ConsumerWidget {
  final String karakterId;
  const _KarakterLoraListesi({required this.karakterId});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final theme = Theme.of(context);
    final tumLoralar = ref.watch(loraListesiProvider);
    final tumIsler = ref.watch(loraIsleriProvider);

    final benimLoralar = tumLoralar
        .where((l) => l.karakterId == karakterId)
        .toList();
    final benimIsler = tumIsler.values
        .where((i) => i.karakterId == karakterId)
        .toList();

    if (benimLoralar.isEmpty && benimIsler.isEmpty) {
      return Container(
        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
        decoration: BoxDecoration(
          color: theme.colorScheme.surfaceContainerHighest
              .withValues(alpha: 0.4),
          borderRadius: BorderRadius.circular(4),
        ),
        child: Text(
          'Bu karaktere ait henüz LoRA yok.',
          style: theme.textTheme.labelSmall?.copyWith(
            color: theme.colorScheme.outline,
          ),
        ),
      );
    }

    return Container(
      decoration: BoxDecoration(
        border: Border.all(color: theme.dividerColor),
        borderRadius: BorderRadius.circular(6),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            padding: const EdgeInsets.symmetric(
                horizontal: 8, vertical: 4),
            decoration: BoxDecoration(
              color: Colors.amber.withValues(alpha: 0.1),
              borderRadius:
                  const BorderRadius.vertical(top: Radius.circular(6)),
            ),
            child: Row(
              children: [
                const Icon(Icons.school,
                    size: 12, color: Colors.amber),
                const SizedBox(width: 4),
                Text(
                  'LoRA\'lar (${benimLoralar.length}'
                  '${benimIsler.where((i) => i.durum == 0).isNotEmpty ? " + ${benimIsler.where((i) => i.durum == 0).length} eğitim" : ""})',
                  style: theme.textTheme.labelSmall?.copyWith(
                    fontWeight: FontWeight.w600,
                    color: Colors.amber.shade800,
                  ),
                ),
              ],
            ),
          ),
          // Aktif eğitimler
          for (final isi in benimIsler.where((i) => i.durum == 0))
            Padding(
              padding: const EdgeInsets.symmetric(
                  horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const SizedBox(
                    width: 12,
                    height: 12,
                    child: CircularProgressIndicator(strokeWidth: 2),
                  ),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          isi.loraIsim,
                          style: theme.textTheme.labelSmall
                              ?.copyWith(fontWeight: FontWeight.w600),
                          overflow: TextOverflow.ellipsis,
                        ),
                        Text(
                          '${isi.faz} · %${isi.ilerleme}',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: theme.colorScheme.outline,
                            fontSize: 10,
                          ),
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                  Text('${isi.adim}/${isi.toplamAdim}',
                      style: theme.textTheme.labelSmall?.copyWith(
                        fontFamily: 'monospace',
                        fontSize: 10,
                      )),
                ],
              ),
            ),
          // Tamamlanmış LoRA'lar
          for (final l in benimLoralar)
            Padding(
              padding: const EdgeInsets.symmetric(
                  horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const Icon(Icons.check_circle,
                      size: 12, color: Colors.green),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          l.meta['isim'] as String? ?? l.id,
                          style: theme.textTheme.labelSmall
                              ?.copyWith(fontWeight: FontWeight.w600),
                          overflow: TextOverflow.ellipsis,
                        ),
                        Text(
                          'base: ${l.baseModel.split("/").last} · '
                          'tetik: ${l.tetikleyici} · ${l.adim} adım · '
                          '${l.boyutMb} MB',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: theme.colorScheme.outline,
                            fontSize: 9,
                          ),
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                ],
              ),
            ),
          // Hatalı işler
          for (final isi
              in benimIsler.where((i) => i.durum == 2))
            Padding(
              padding: const EdgeInsets.symmetric(
                  horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const Icon(Icons.error_outline,
                      size: 12, color: Colors.red),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Text(
                      '${isi.loraIsim}: ${isi.hata ?? "hata"}',
                      style: theme.textTheme.labelSmall?.copyWith(
                        color: Colors.red,
                        fontSize: 10,
                      ),
                      overflow: TextOverflow.ellipsis,
                    ),
                  ),
                ],
              ),
            ),
          const SizedBox(height: 4),
        ],
      ),
    );
  }
}

class _KarakterKarti extends StatelessWidget {
  final Karakter karakter;
  final bool aktif;
  final VoidCallback onSec;
  final VoidCallback onDuzenle;
  const _KarakterKarti({
    required this.karakter,
    required this.aktif,
    required this.onSec,
    required this.onDuzenle,
  });

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final yuz = karakter.yuzRefYolu;
    return SizedBox(
      width: 110,
      child: Stack(
        children: [
          Material(
            color: aktif
                ? Colors.deepPurple
                : theme.colorScheme.surfaceContainerHighest,
            borderRadius: BorderRadius.circular(8),
            child: InkWell(
              borderRadius: BorderRadius.circular(8),
              onTap: onSec,
              onLongPress: onDuzenle,
              onSecondaryTap: onDuzenle, // sağ tık → düzenle
              child: Container(
                padding: const EdgeInsets.all(6),
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(8),
                  border: Border.all(
                    color:
                        aktif ? Colors.deepPurple : theme.dividerColor,
                    width: aktif ? 2 : 1,
                  ),
                ),
                child: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Stack(
                      alignment: Alignment.center,
                      children: [
                        Container(
                          width: 44,
                          height: 44,
                          decoration: BoxDecoration(
                            shape: BoxShape.circle,
                            color: theme.colorScheme.surface,
                            border: Border.all(
                              color: aktif
                                  ? Colors.white
                                  : theme.dividerColor,
                              width: 2,
                            ),
                          ),
                          clipBehavior: Clip.antiAlias,
                          child: yuz != null && File(yuz).existsSync()
                              ? Image.file(File(yuz), fit: BoxFit.cover)
                              : Icon(Icons.person,
                                  size: 24,
                                  color: theme.colorScheme.outline),
                        ),
                        if (aktif)
                          const Positioned(
                            right: 0,
                            bottom: 0,
                            child: Icon(Icons.check_circle,
                                size: 16, color: Colors.white),
                          ),
                      ],
                    ),
                    const SizedBox(height: 4),
                    Text(
                      karakter.isim,
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                      style: TextStyle(
                        fontSize: 11,
                        fontWeight: FontWeight.w600,
                        color: aktif ? Colors.white : null,
                      ),
                    ),
                    Text(
                      karakter.cinsiyet,
                      style: TextStyle(
                        fontSize: 9,
                        color: aktif
                            ? Colors.white.withValues(alpha: 0.85)
                            : theme.colorScheme.outline,
                      ),
                    ),
                  ],
                ),
              ),
            ),
          ),
          // Düzenleme butonu — sağ üst köşe
          Positioned(
            top: 2,
            right: 2,
            child: Material(
              color: aktif
                  ? Colors.white.withValues(alpha: 0.25)
                  : theme.colorScheme.surface,
              shape: const CircleBorder(),
              child: InkWell(
                customBorder: const CircleBorder(),
                onTap: onDuzenle,
                child: Tooltip(
                  message: 'Düzenle / Sil',
                  child: Padding(
                    padding: const EdgeInsets.all(3),
                    child: Icon(
                      Icons.edit_outlined,
                      size: 12,
                      color:
                          aktif ? Colors.white : theme.colorScheme.outline,
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

/// Karakter dialog'da gösterilen — bu karaktere ait ACE-Step Ses LoRA listesi.
class _KarakterAceLoraListesi extends ConsumerWidget {
  final String karakterId;
  const _KarakterAceLoraListesi({required this.karakterId});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final theme = Theme.of(context);
    final tumLoralar = ref.watch(aceLoraListesiProvider);
    final tumIsler = ref.watch(aceLoraIsleriProvider);

    final benimLoralar = tumLoralar
        .where((l) => l.karakterId == karakterId)
        .toList();
    final benimIsler = tumIsler.values
        .where((i) => i.karakterId == karakterId)
        .toList();

    if (benimLoralar.isEmpty && benimIsler.isEmpty) {
      return Container(
        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
        decoration: BoxDecoration(
          color: theme.colorScheme.surfaceContainerHighest
              .withValues(alpha: 0.4),
          borderRadius: BorderRadius.circular(4),
        ),
        child: Text(
          'Bu karaktere ait henüz ACE-Step LoRA yok.',
          style: theme.textTheme.labelSmall?.copyWith(
            color: theme.colorScheme.outline,
          ),
        ),
      );
    }

    return Container(
      decoration: BoxDecoration(
        border: Border.all(color: theme.dividerColor),
        borderRadius: BorderRadius.circular(6),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            padding:
                const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
            decoration: BoxDecoration(
              color: Colors.cyan.withValues(alpha: 0.1),
              borderRadius:
                  const BorderRadius.vertical(top: Radius.circular(6)),
            ),
            child: Row(
              children: [
                const Icon(Icons.music_note, size: 12, color: Colors.cyan),
                const SizedBox(width: 4),
                Text(
                  'ACE-Step LoRA\'lar (${benimLoralar.length}'
                  '${benimIsler.where((i) => i.durum == 0).isNotEmpty ? " + ${benimIsler.where((i) => i.durum == 0).length} eğitim" : ""})',
                  style: theme.textTheme.labelSmall?.copyWith(
                    fontWeight: FontWeight.w600,
                    color: Colors.cyan.shade800,
                  ),
                ),
              ],
            ),
          ),
          // Aktif eğitimler
          for (final isi in benimIsler.where((i) => i.durum == 0))
            Padding(
              padding:
                  const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const SizedBox(
                    width: 12,
                    height: 12,
                    child: CircularProgressIndicator(strokeWidth: 2),
                  ),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          isi.loraIsim,
                          style: theme.textTheme.labelSmall
                              ?.copyWith(fontWeight: FontWeight.w600),
                          overflow: TextOverflow.ellipsis,
                        ),
                        Text(
                          '${isi.faz} · %${isi.ilerleme}',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: theme.colorScheme.outline,
                            fontSize: 10,
                          ),
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                  IconButton(
                    icon: const Icon(Icons.cancel,
                        size: 14, color: Colors.red),
                    tooltip: 'İptal',
                    visualDensity: VisualDensity.compact,
                    onPressed: () => ref
                        .read(aceLoraIsleriProvider.notifier)
                        .iptal(isi.id),
                  ),
                  Text('${isi.epoch}/${isi.toplamEpoch}',
                      style: theme.textTheme.labelSmall?.copyWith(
                        fontFamily: 'monospace',
                        fontSize: 10,
                      )),
                ],
              ),
            ),
          // Tamamlanmış LoRA'lar
          for (final l in benimLoralar)
            Padding(
              padding:
                  const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const Icon(Icons.check_circle,
                      size: 12, color: Colors.green),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          l.isim ?? l.id,
                          style: theme.textTheme.labelSmall
                              ?.copyWith(fontWeight: FontWeight.w600),
                          overflow: TextOverflow.ellipsis,
                        ),
                        Text(
                          'base: ${l.baseVariant} · '
                          'tarz: ${l.tarz} · '
                          'tetik: ${l.tetikleyici} · '
                          '${l.epoch} ep · ${l.boyutMb.toStringAsFixed(1)} MB',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: theme.colorScheme.outline,
                            fontSize: 9,
                          ),
                          overflow: TextOverflow.ellipsis,
                        ),
                      ],
                    ),
                  ),
                  // Devam et butonu
                  IconButton(
                    icon: const Icon(Icons.play_arrow,
                        size: 14, color: Colors.cyan),
                    tooltip: 'Eğitime devam et',
                    visualDensity: VisualDensity.compact,
                    onPressed: () {
                      // mevcut LoRA üzerine devam — karakter context'i lazım
                      final karakterler = ref.read(karakterlerProvider);
                      final k = karakterler
                          .where((x) => x.id == karakterId)
                          .firstOrNull;
                      if (k != null) {
                        AceLoraEgitDialog.goster(
                          context,
                          karakter: k,
                          mevcutLoraYolu: l.yol,
                        );
                      }
                    },
                  ),
                  IconButton(
                    icon: const Icon(Icons.delete_outline,
                        size: 14, color: Colors.red),
                    tooltip: 'Sil',
                    visualDensity: VisualDensity.compact,
                    onPressed: () => ref
                        .read(aceLoraListesiProvider.notifier)
                        .sil(l.id),
                  ),
                ],
              ),
            ),
          // Hatalı işler
          for (final isi in benimIsler.where((i) => i.durum == 2))
            Padding(
              padding:
                  const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
              child: Row(
                children: [
                  const Icon(Icons.error_outline,
                      size: 12, color: Colors.red),
                  const SizedBox(width: 6),
                  Expanded(
                    child: Text(
                      '${isi.loraIsim}: ${isi.hata ?? "hata"}',
                      style: theme.textTheme.labelSmall?.copyWith(
                        color: Colors.red,
                        fontSize: 10,
                      ),
                      overflow: TextOverflow.ellipsis,
                    ),
                  ),
                ],
              ),
            ),
          const SizedBox(height: 4),
        ],
      ),
    );
  }
}

/// ACE-Step Ses LoRA eğitim dialog'u — port 8003 backend'ine eğitim başlatır.
class AceLoraEgitDialog extends ConsumerStatefulWidget {
  final Karakter karakter;
  final String? mevcutLoraYolu;

  const AceLoraEgitDialog({
    super.key,
    required this.karakter,
    this.mevcutLoraYolu,
  });

  static Future<void> goster(
    BuildContext context, {
    required Karakter karakter,
    String? mevcutLoraYolu,
  }) async {
    await showDialog(
      context: context,
      builder: (_) => AceLoraEgitDialog(
        karakter: karakter,
        mevcutLoraYolu: mevcutLoraYolu,
      ),
    );
  }

  @override
  ConsumerState<AceLoraEgitDialog> createState() =>
      _AceLoraEgitDialogState();
}

class _AceLoraEgitDialogState extends ConsumerState<AceLoraEgitDialog> {
  late TextEditingController _isimCtrl;
  late TextEditingController _tetikleyiciCtrl;
  String? _datasetKlasoru;
  String _baseVariant = 'turbo'; // turbo / sft / base
  String _trainMode = 'fixed'; // fixed / vanilla
  int _epoch = 500;
  int _batchSize = 1;
  double _lr = 1e-4;
  String _tarz = 'pop';
  bool _voiceCloneEtkin = false;

  @override
  void initState() {
    super.initState();
    final devamMi = widget.mevcutLoraYolu != null;
    _isimCtrl = TextEditingController(
      text: devamMi ? '' : '${widget.karakter.isim}_ace_v1',
    );
    final tetik = widget.karakter.isim
        .replaceAll(RegExp(r'[^A-Za-z0-9]'), '')
        .toLowerCase();
    _tetikleyiciCtrl = TextEditingController(text: '${tetik}_voice');
  }

  @override
  void dispose() {
    _isimCtrl.dispose();
    _tetikleyiciCtrl.dispose();
    super.dispose();
  }

  Future<void> _klasorSec() async {
    final yol = await FilePicker.platform.getDirectoryPath();
    if (yol != null) {
      setState(() => _datasetKlasoru = yol);
    }
  }

  int _veriDosyaSayisi() {
    if (_datasetKlasoru == null) return 0;
    final d = Directory(_datasetKlasoru!);
    if (!d.existsSync()) return 0;
    return d
        .listSync(recursive: true)
        .whereType<File>()
        .where((f) {
          final ext = f.path.toLowerCase();
          return ext.endsWith('.mp3') ||
              ext.endsWith('.wav') ||
              ext.endsWith('.flac') ||
              ext.endsWith('.ogg') ||
              ext.endsWith('.m4a');
        })
        .length;
  }

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final devamMi = widget.mevcutLoraYolu != null;
    final veriSayisi = _veriDosyaSayisi();
    final yeterliVeri = veriSayisi >= 3 || devamMi;

    return AlertDialog(
      title: Row(
        children: [
          const Icon(Icons.music_note, color: Colors.cyan),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              devamMi
                  ? 'ACE-Step LoRA — Devam Et'
                  : 'ACE-Step Ses LoRA Eğit',
              overflow: TextOverflow.ellipsis,
            ),
          ),
        ],
      ),
      content: SizedBox(
        width: 520,
        child: SingleChildScrollView(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              // Karakter bilgisi
              Container(
                padding: const EdgeInsets.all(8),
                decoration: BoxDecoration(
                  color: Colors.cyan.withValues(alpha: 0.06),
                  borderRadius: BorderRadius.circular(6),
                ),
                child: Row(
                  children: [
                    const Icon(Icons.person_pin_circle,
                        size: 14, color: Colors.cyan),
                    const SizedBox(width: 6),
                    Text('Karakter: ${widget.karakter.isim}',
                        style: theme.textTheme.labelMedium
                            ?.copyWith(fontWeight: FontWeight.w600)),
                    if (devamMi) ...[
                      const SizedBox(width: 8),
                      Container(
                        padding: const EdgeInsets.symmetric(
                            horizontal: 6, vertical: 2),
                        decoration: BoxDecoration(
                          color: Colors.cyan,
                          borderRadius: BorderRadius.circular(4),
                        ),
                        child: const Text(
                          'DEVAM',
                          style: TextStyle(
                              fontSize: 9,
                              color: Colors.white,
                              fontWeight: FontWeight.w700),
                        ),
                      ),
                    ],
                  ],
                ),
              ),
              const SizedBox(height: 12),
              TextField(
                controller: _isimCtrl,
                decoration: const InputDecoration(
                  labelText: 'LoRA İsmi',
                  border: OutlineInputBorder(),
                  isDense: true,
                  hintText: 'Ayse_ace_v1',
                ),
              ),
              const SizedBox(height: 10),
              TextField(
                controller: _tetikleyiciCtrl,
                decoration: const InputDecoration(
                  labelText: 'Tetikleme kelimesi',
                  border: OutlineInputBorder(),
                  isDense: true,
                  hintText: 'ayse_voice',
                ),
              ),
              const SizedBox(height: 12),
              // Dataset klasör seçimi
              Container(
                padding: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  border: Border.all(color: theme.dividerColor),
                  borderRadius: BorderRadius.circular(6),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        const Icon(Icons.folder_open,
                            size: 14, color: Colors.cyan),
                        const SizedBox(width: 6),
                        Expanded(
                          child: Text(
                            _datasetKlasoru ??
                                'Eğitim veri klasörü seç (.wav/.mp3/.flac)',
                            style: theme.textTheme.labelSmall?.copyWith(
                              color: _datasetKlasoru != null
                                  ? null
                                  : theme.colorScheme.outline,
                            ),
                            overflow: TextOverflow.ellipsis,
                          ),
                        ),
                        OutlinedButton.icon(
                          icon: const Icon(Icons.folder, size: 14),
                          label: const Text('Klasör seç',
                              style: TextStyle(fontSize: 11)),
                          onPressed: _klasorSec,
                        ),
                      ],
                    ),
                    if (_datasetKlasoru != null)
                      Padding(
                        padding: const EdgeInsets.only(top: 4),
                        child: Text(
                          '$veriSayisi ses dosyası bulundu '
                          '${veriSayisi < 3 ? "(min 3 önerilir)" : "✓"}',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: veriSayisi >= 3
                                ? Colors.green
                                : Colors.orange,
                            fontSize: 10,
                          ),
                        ),
                      ),
                  ],
                ),
              ),
              const SizedBox(height: 14),
              // Base model seçimi
              Text('Base Model',
                  style: theme.textTheme.labelMedium
                      ?.copyWith(fontWeight: FontWeight.w600)),
              const SizedBox(height: 4),
              SegmentedButton<String>(
                segments: const [
                  ButtonSegment(
                      value: 'turbo',
                      label: Text('Turbo'),
                      icon: Icon(Icons.bolt, size: 14)),
                  ButtonSegment(
                      value: 'sft',
                      label: Text('SFT'),
                      icon: Icon(Icons.tune, size: 14)),
                  ButtonSegment(
                      value: 'base',
                      label: Text('Base'),
                      icon: Icon(Icons.layers, size: 14)),
                ],
                selected: {_baseVariant},
                onSelectionChanged: (s) =>
                    setState(() => _baseVariant = s.first),
                style: const ButtonStyle(
                  visualDensity: VisualDensity.compact,
                ),
              ),
              const SizedBox(height: 12),
              // Train mode
              Text('Eğitim Modu',
                  style: theme.textTheme.labelMedium
                      ?.copyWith(fontWeight: FontWeight.w600)),
              const SizedBox(height: 4),
              SegmentedButton<String>(
                segments: const [
                  ButtonSegment(
                      value: 'fixed',
                      label: Text('Fixed (önerilir)')),
                  ButtonSegment(value: 'vanilla', label: Text('Vanilla')),
                ],
                selected: {_trainMode},
                onSelectionChanged: (s) =>
                    setState(() => _trainMode = s.first),
                style: const ButtonStyle(
                  visualDensity: VisualDensity.compact,
                ),
              ),
              const SizedBox(height: 12),
              // Tarz seçimi
              DropdownButtonFormField<String>(
                value: _tarz,
                decoration: const InputDecoration(
                  labelText: 'Müzik tarzı',
                  border: OutlineInputBorder(),
                  isDense: true,
                ),
                items: const [
                  DropdownMenuItem(value: 'pop', child: Text('Pop')),
                  DropdownMenuItem(value: 'rock', child: Text('Rock')),
                  DropdownMenuItem(value: 'klasik', child: Text('Klasik')),
                  DropdownMenuItem(
                      value: 'turkhalk',
                      child: Text('Türk Halk Müziği')),
                  DropdownMenuItem(value: 'arabesk', child: Text('Arabesk')),
                  DropdownMenuItem(
                      value: 'electronic', child: Text('Electronic')),
                  DropdownMenuItem(value: 'jazz', child: Text('Jazz')),
                ],
                onChanged: (v) => setState(() => _tarz = v ?? 'pop'),
              ),
              const SizedBox(height: 12),
              // Epoch slider
              Row(
                children: [
                  Text('Epoch: $_epoch',
                      style: theme.textTheme.labelMedium
                          ?.copyWith(fontWeight: FontWeight.w600)),
                  const Spacer(),
                  Text(
                    _epoch < 200
                        ? 'hızlı'
                        : _epoch < 700
                            ? 'orta'
                            : 'derin',
                    style: theme.textTheme.labelSmall?.copyWith(
                      color: theme.colorScheme.outline,
                    ),
                  ),
                ],
              ),
              Slider(
                value: _epoch.toDouble(),
                min: 100,
                max: 2000,
                divisions: 19,
                label: '$_epoch',
                onChanged: (v) => setState(() => _epoch = v.round()),
              ),
              // Batch size
              Row(
                children: [
                  Text('Batch:',
                      style: theme.textTheme.labelMedium
                          ?.copyWith(fontWeight: FontWeight.w600)),
                  const SizedBox(width: 8),
                  ...[1, 2, 3, 4].map((b) => Padding(
                        padding: const EdgeInsets.only(right: 4),
                        child: ChoiceChip(
                          label: Text('$b',
                              style: const TextStyle(fontSize: 11)),
                          selected: _batchSize == b,
                          onSelected: (_) =>
                              setState(() => _batchSize = b),
                          visualDensity: VisualDensity.compact,
                        ),
                      )),
                ],
              ),
              const SizedBox(height: 8),
              // Learning rate
              Row(
                children: [
                  Text('LR:',
                      style: theme.textTheme.labelMedium
                          ?.copyWith(fontWeight: FontWeight.w600)),
                  const SizedBox(width: 8),
                  ...[
                    (0.5e-4, '0.5e-4'),
                    (1e-4, '1e-4'),
                    (2e-4, '2e-4'),
                  ].map((p) => Padding(
                        padding: const EdgeInsets.only(right: 4),
                        child: ChoiceChip(
                          label: Text(p.$2,
                              style: const TextStyle(fontSize: 11)),
                          selected: (_lr - p.$1).abs() < 1e-9,
                          onSelected: (_) => setState(() => _lr = p.$1),
                          visualDensity: VisualDensity.compact,
                        ),
                      )),
                ],
              ),
              const SizedBox(height: 8),
              // Voice clone
              CheckboxListTile(
                value: _voiceCloneEtkin,
                onChanged: (v) =>
                    setState(() => _voiceCloneEtkin = v ?? false),
                contentPadding: EdgeInsets.zero,
                dense: true,
                visualDensity: VisualDensity.compact,
                controlAffinity: ListTileControlAffinity.leading,
                title: Text('Voice clone aktif',
                    style: theme.textTheme.labelMedium),
                subtitle: Text(
                  'RVC ile karakter sesini şarkıya bindir',
                  style: theme.textTheme.labelSmall?.copyWith(
                    color: theme.colorScheme.outline,
                    fontSize: 10,
                  ),
                ),
              ),
              const SizedBox(height: 8),
              if (!yeterliVeri)
                Container(
                  padding: const EdgeInsets.all(8),
                  decoration: BoxDecoration(
                    color: Colors.orange.withValues(alpha: 0.1),
                    borderRadius: BorderRadius.circular(4),
                  ),
                  child: Row(
                    children: [
                      const Icon(Icons.warning_amber,
                          size: 14, color: Colors.orange),
                      const SizedBox(width: 6),
                      Expanded(
                        child: Text(
                          'En az 3 ses dosyası gerekli (önerilen: 10+).',
                          style: theme.textTheme.labelSmall?.copyWith(
                            color: Colors.orange.shade800,
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
            ],
          ),
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.pop(context),
          child: const Text('İptal'),
        ),
        FilledButton.icon(
          icon: const Icon(Icons.play_arrow, size: 16),
          label: Text(devamMi ? 'Devam Et' : 'Eğitime Başla'),
          style: FilledButton.styleFrom(
            backgroundColor: Colors.cyan.shade700,
          ),
          onPressed: (_isimCtrl.text.trim().isEmpty ||
                  _datasetKlasoru == null ||
                  !yeterliVeri)
              ? null
              : () async {
                  // Port kontrolü
                  final hazir = await AceLoraApiIstemci.portAcikMi();
                  if (!hazir) {
                    if (context.mounted) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(
                          content: Text(
                              'ACE-Step backend (port 8003) bulunamadı.'),
                          backgroundColor: Colors.red,
                        ),
                      );
                    }
                    return;
                  }
                  final jobId = await ref
                      .read(aceLoraIsleriProvider.notifier)
                      .egitBaslat(
                        karakterId: widget.karakter.id,
                        loraIsim: _isimCtrl.text.trim(),
                        veriKlasoru: _datasetKlasoru!,
                        baseVariant: _baseVariant,
                        tarz: _tarz,
                        tetikleyici:
                            _tetikleyiciCtrl.text.trim().isEmpty
                                ? null
                                : _tetikleyiciCtrl.text.trim(),
                        epoch: _epoch,
                        rank: 16,
                        mevcutLoraYolu: widget.mevcutLoraYolu,
                      );
                  if (context.mounted) {
                    if (jobId != null) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(
                          content: Text('Eğitim başladı: $jobId'),
                          backgroundColor: Colors.cyan,
                        ),
                      );
                      Navigator.pop(context);
                    } else {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(
                          content: Text('Eğitim başlatılamadı'),
                          backgroundColor: Colors.red,
                        ),
                      );
                    }
                  }
                },
        ),
      ],
    );
  }
}