import '../http_util.dart';
import '../models.dart';
import 'base_provider.dart';
import 'openai_compat.dart';

/// Python `KiloCode` — OpenAI-compat gateway, no key for `kilo-auto/free`.
class KiloCode extends OpenAiCompatProvider {
  KiloCode()
      : super(
          providerName: 'KiloCode',
          apiBase: 'https://api.kilo.ai/api/gateway',
          fallbackModel: 'kilo-auto/free',
          supportedModels: const ['kilo-auto/free', 'kilo-auto'],
        );

  @override
  String get url => 'https://kilo.ai';
}

/// Python `OpenCode` — `https://opencode.ai/zen/v1`, default `big-pickle`.
class OpenCode extends OpenAiCompatProvider {
  OpenCode()
      : super(
          providerName: 'OpenCode',
          apiBase: 'https://opencode.ai/zen/v1',
          fallbackModel: 'big-pickle',
          supportedModels: const ['big-pickle'],
        );

  @override
  String get url => 'https://opencode.ai';
}

/// Python `G4FSpace` / `ClientFactory("default")`.
/// Anonymous calls currently return 402 cake-credits; still tried so a baked
/// session cookie or future free window works without a code change.
class G4FSpace extends BaseProvider {
  @override
  String get name => 'G4FSpace';

  @override
  String get url => 'https://g4f.space';

  @override
  bool get working => true;

  @override
  List<String> get models => const ['auto', 'gpt-4o', 'openai'];

  @override
  String get defaultModel => 'auto';

  static const _bases = [
    'https://g4f.space/api/auto',
    'https://g4f.space/api/pollinations',
    'https://g4f.space/v1',
  ];

  @override
  Stream<String> createAsyncGenerator(
    String model,
    List<Message> messages, {
    bool stream = false,
  }) async* {
    final errors = <String>[];
    for (final base in _bases) {
      try {
        final inner = OpenAiCompatProvider(
          providerName: 'G4FSpace',
          apiBase: base,
          fallbackModel: model.isEmpty ? defaultModel : model,
          supportedModels: models,
        );
        final text = await inner
            .complete(model.isEmpty ? defaultModel : model, messages)
            .timeout(requestTimeout);
        if (looksLikeModelOutput(text)) {
          yield text;
          return;
        }
        errors.add('$base unusable');
      } catch (e) {
        errors.add('$base: $e');
      }
    }
    throw Exception('G4FSpace failed: ${errors.join(' | ')}');
  }
}