Manager.java

package com.example.shazamwrapper;

import android.content.Context;

import com.shazam.shazamkit.AudioSampleRateInHz;
import com.shazam.shazamkit.Catalog;
import com.shazam.shazamkit.DeveloperToken;
import com.shazam.shazamkit.DeveloperTokenProvider;
import com.shazam.shazamkit.MatchResult;
import com.shazam.shazamkit.Session;
import com.shazam.shazamkit.ShazamCatalog;
import com.shazam.shazamkit.ShazamKit;
import com.shazam.shazamkit.ShazamKitException;
import com.shazam.shazamkit.ShazamKitResult;
import com.shazam.shazamkit.Signature;
import com.shazam.shazamkit.SignatureGenerator;
import com.shazam.shazamkit.StreamingSession;

import java.util.Locale;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import kotlin.coroutines.Continuation;
import kotlin.coroutines.CoroutineContext;
import kotlinx.coroutines.CoroutineScope;
import kotlinx.coroutines.Dispatchers;
import kotlinx.coroutines.flow.Flow;
import kotlinx.coroutines.flow.FlowCollector;

public class ShazamManager {
    private final ExecutorService executorService = Executors.newSingleThreadExecutor();
    private final Context context;
    private final String developerToken;
    private ShazamCatalog shazamCatalog;
    private SignatureGenerator signatureGenerator;
    private StreamingSession streamingSession;

    public ShazamManager(Context context, String developerToken) {
        this.context = context;
        this.developerToken = developerToken;
        initialize();
    }

    private void initialize() {
        DeveloperTokenProvider tokenProvider = new DeveloperTokenProvider() {
            @Override
            public DeveloperToken provideDeveloperToken() {
                return new DeveloperToken(developerToken);
            }
        };
        shazamCatalog = ShazamKit.INSTANCE.createShazamCatalog(tokenProvider, Locale.getDefault());
    }

    public void initializeSignatureGenerator(AudioSampleRateInHz sampleRate, SignatureGeneratorCallback callback) {
        CompletableFuture.supplyAsync(() -> {
            try {
                ShazamKitResult<ShazamKitException, SignatureGenerator> result = ShazamKit.INSTANCE.createSignatureGenerator(sampleRate, new Continuation<ShazamKitResult<ShazamKitException, SignatureGenerator>>() {
                    @Override
                    public CoroutineContext getContext() {
                        return Dispatchers.getDefault();
                    }

                    @Override
                    public void resumeWith(Object o) {
                        // This method is called when the coroutine completes
                    }
                });
                
                if (result instanceof ShazamKitResult.Success) {
                    signatureGenerator = ((ShazamKitResult.Success<SignatureGenerator>) result).getData();
                    return true;
                } else {
                    throw ((ShazamKitResult.Failure<ShazamKitException>) result).getReason();
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }, executorService).thenAccept(success -> callback.onSuccess())
          .exceptionally(e -> {
              callback.onError(e);
              return null;
          });
    }

    public void appendAudioData(byte[] audioData, int meaningfulLengthInBytes, long timestamp) {
        if (signatureGenerator != null) {
            signatureGenerator.append(audioData, meaningfulLengthInBytes, timestamp);
        }
    }

    public void generateSignature(SignatureCallback callback) {
        if (signatureGenerator != null) {
            Signature signature = signatureGenerator.generateSignature();
            callback.onSignatureGenerated(signature);
        } else {
            callback.onError(new IllegalStateException("SignatureGenerator not initialized"));
        }
    }

    public void matchSignature(Signature signature, MatchResultCallback callback) {
        CompletableFuture.supplyAsync(() -> {
            try {
                ShazamKitResult<ShazamKitException, Session> sessionResult = ShazamKit.INSTANCE.createSession(shazamCatalog, new Continuation<ShazamKitResult<ShazamKitException, Session>>() {
                    @Override
                    public CoroutineContext getContext() {
                        return Dispatchers.getDefault();
                    }

                    @Override
                    public void resumeWith(Object o) {
                        // This method is called when the coroutine completes
                    }
                });
                
                if (sessionResult instanceof ShazamKitResult.Success) {
                    Session session = ((ShazamKitResult.Success<Session>) sessionResult).getData();
                    return session.match(signature, new Continuation<MatchResult>() {
                        @Override
                        public CoroutineContext getContext() {
                            return Dispatchers.getDefault();
                        }

                        @Override
                        public void resumeWith(Object o) {
                            // This method is called when the coroutine completes
                        }
                    });
                } else {
                    throw ((ShazamKitResult.Failure<ShazamKitException>) sessionResult).getReason();
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }, executorService).thenAccept(matchResult -> callback.onMatchResult((MatchResult) matchResult))
          .exceptionally(e -> {
              callback.onError(e);
              return null;
          });
    }

    public void initializeStreamingSession(AudioSampleRateInHz sampleRate, int bufferSize, StreamingSessionCallback callback) {
        CompletableFuture.supplyAsync(() -> {
            try {
                ShazamKitResult<ShazamKitException, StreamingSession> result = ShazamKit.INSTANCE.createStreamingSession(shazamCatalog, sampleRate, bufferSize, new Continuation<ShazamKitResult<ShazamKitException, StreamingSession>>() {
                    @Override
                    public CoroutineContext getContext() {
                        return Dispatchers.getDefault();
                    }

                    @Override
                    public void resumeWith(Object o) {
                        // This method is called when the coroutine completes
                    }
                });
                
                if (result instanceof ShazamKitResult.Success) {
                    streamingSession = ((ShazamKitResult.Success<StreamingSession>) result).getData();
                    return true;
                } else {
                    throw ((ShazamKitResult.Failure<ShazamKitException>) result).getReason();
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }, executorService).thenAccept(success -> callback.onSuccess())
          .exceptionally(e -> {
              callback.onError(e);
              return null;
          });
    }

    public void matchStream(byte[] audioData, int meaningfulLengthInBytes, long timestampInMs) {
        if (streamingSession != null) {
            streamingSession.matchStream(audioData, meaningfulLengthInBytes, timestampInMs);
        }
    }

    public void startStreamingRecognition(final StreamingRecognitionCallback callback) {
        if (streamingSession != null) {
            CompletableFuture.runAsync(() -> {
                Flow<MatchResult> flow = streamingSession.recognitionResults();
                try {
                    flow.collect(new FlowCollector<MatchResult>() {
                        @Override
                        public Object emit(MatchResult matchResult, Continuation<? super kotlin.Unit> continuation) {
                            callback.onRecognitionResult(matchResult);
                            return null;
                        }
                    }, new Continuation<kotlin.Unit>() {
                        @Override
                        public CoroutineContext getContext() {
                            return Dispatchers.getDefault();
                        }

                        @Override
                        public void resumeWith(Object o) {
                            // This method is called when the coroutine completes
                        }
                    });
                } catch (Exception e) {
                    callback.onError(e);
                }
            }, executorService);
        } else {
            callback.onError(new IllegalStateException("StreamingSession not initialized"));
        }
    }

    public void shutdown() {
        executorService.shutdown();
    }

    public interface SignatureGeneratorCallback {
        void onSuccess();
        void onError(Exception e);
    }

    public interface SignatureCallback {
        void onSignatureGenerated(Signature signature);
        void onError(Exception e);
    }

    public interface MatchResultCallback {
        void onMatchResult(MatchResult matchResult);
        void onError(Exception e);
    }

    public interface StreamingSessionCallback {
        void onSuccess();
        void onError(Exception e);
    }

    public interface StreamingRecognitionCallback {
        void onRecognitionResult(MatchResult matchResult);
        void onError(Exception e);
    }
}