/**
 * Titanium Firebase Auth
 * Appcelerator Titanium Mobile
 * Copyright (c) 2018-present by Hans Knöchel. All Rights Reserved.
 * Licensed under the terms of the Apache Public License
 * Please see the LICENSE included with this distribution for details.
 *
 */
package firebase.auth;

import org.appcelerator.kroll.KrollModule;
import org.appcelerator.kroll.KrollDict;
import org.appcelerator.kroll.KrollFunction;
import org.appcelerator.kroll.annotations.Kroll;
import org.appcelerator.titanium.TiApplication;
import org.appcelerator.kroll.common.Log;
import org.appcelerator.kroll.common.TiConfig;

import java.util.List;
import java.util.concurrent.TimeUnit;

import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseException;
import com.google.firebase.FirebaseTooManyRequestsException;

import android.app.Activity;
import android.net.Uri;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseAuthInvalidCredentialsException;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GetTokenResult;
import com.google.firebase.auth.GithubAuthProvider;
import com.google.firebase.auth.PhoneAuthCredential;
import com.google.firebase.auth.PhoneAuthProvider;
import com.google.firebase.auth.ProviderQueryResult;
import com.google.firebase.auth.UserProfileChangeRequest;

@Kroll.module(name = "TitaniumFirebaseAuth", id = "firebase.auth")
public class TitaniumFirebaseAuthModule extends KrollModule {
	private static final String LCAT = "TitaniumFirebaseAuthModule";

	public FirebaseAuth firebaseAuth;
	private PhoneAuthProvider.ForceResendingToken mResendToken;
	private PhoneAuthProvider.OnVerificationStateChangedCallbacks verifyPhoneNumberCallbacks;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_UNKNOWN = 0;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_FACEBOOK = 1;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_TWITTER = 2;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_GOOGLE = 3;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_GITHUB = 4;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_PASSWORD = 5;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_PHONE = 6;

	@Kroll.constant
	public static final int AUTH_PROVIDER_TYPE_OAUTH = 7;

	@Kroll.constant
	public static final int SMS_INVALID_REQUEST = 0;

	@Kroll.constant
	public static final int SMS_QUOTA_EXCEEDED = 1;

	@Kroll.constant
	public static final String TESTNUMBER = "+494060812460";

	private KrollFunction authStateDidChangeCallback;

	public TitaniumFirebaseAuthModule() {
		super();
	}

	@Override
	public void onStart(Activity activity) {
		// FirebaseApp.initializeApp(TiApplication.getInstance().getApplicationContext());
		firebaseAuth = FirebaseAuth.getInstance();

		verifyPhoneNumberCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {
			@Override
			public void onVerificationCompleted(PhoneAuthCredential credential) {
				Log.d(LCAT, "onVerificationCompleted");
				signInWithPhoneAuthCredential(credential);
			}

			@Override
			public void onCodeAutoRetrievalTimeOut(String verificationId) {
			}

			@Override
			public void onCodeSent(String verificationId,
					PhoneAuthProvider.ForceResendingToken token) {
				Log.d(LCAT, "onCodeSent");
				mResendToken = token;
				if (onCodeSentCallback != null) {
					KrollDict event = new KrollDict();
					event.put("verificationId", verificationId);
					event.put("resendToken", new ResendTokenProxy(token));
					onCodeSentCallback.callAsync(getKrollObject(), event);
				}

			}

			@Override
			public void onVerificationFailed(FirebaseException e) {
				Log.d(LCAT, "onVerificationFailed");
				KrollDict event = new KrollDict();
				if (e instanceof FirebaseAuthInvalidCredentialsException) {
					event.put("message", "Invalid request");
					event.put("code", SMS_INVALID_REQUEST);
				} else if (e instanceof FirebaseTooManyRequestsException) {
					event.put("code", SMS_QUOTA_EXCEEDED);
					event.put("message",
							"The SMS quota for the project has been exceeded");
				}
				onErrorCallback.callAsync(getKrollObject(), event);
			}

		};

		super.onStart(activity);
	}

	@Kroll.method
	public void fetchProviders(KrollDict params) {
		String email = (String) params.get("email");
		final KrollFunction callback = (KrollFunction) params.get("callback");

		firebaseAuth.fetchProvidersForEmail(email).addOnCompleteListener(
				new OnCompleteListener<ProviderQueryResult>() {
					@Override
					public void onComplete(Task<ProviderQueryResult> task) {
						KrollDict event = new KrollDict();
						event.put("success", task.isSuccessful());

						if (task.isSuccessful()) {
							List<String> providers = task.getResult()
									.getProviders();
							String[] result = new String[providers.size()];
							event.put("providers", providers.toArray(result));
						} else {
							event.put("code", 0);
							event.put("description", task.getException()
									.getMessage());
						}
						callback.callAsync(getKrollObject(), event);
					}
				});
	}

	@Kroll.method
	public void createUserWithEmail(KrollDict params) {
		String email = (String) params.get("email");
		String password = (String) params.get("password");
		final KrollFunction callback = (KrollFunction) params.get("callback");
		Activity activity = TiApplication.getInstance().getCurrentActivity();
		firebaseAuth.createUserWithEmailAndPassword(email, password)
				.addOnCompleteListener(activity,
						new OnCompleteListener<AuthResult>() {
							@Override
							public void onComplete(Task<AuthResult> task) {
								KrollDict event = new KrollDict();
								event.put("success", task.isSuccessful());

								if (task.isSuccessful()) {
									event.put("user",
											dictionaryFromUser(firebaseAuth
													.getCurrentUser()));
								} else {
									event.put("code", 0);
									event.put("description", task
											.getException().getMessage());
								}
								callback.callAsync(getKrollObject(), event);
							}
						});
	}

	@Kroll.method
	public void signInWithEmail(KrollDict params) {
		String email = (String) params.get("email");
		String password = (String) params.get("password");
		final KrollFunction callback = (KrollFunction) params.get("callback");

		firebaseAuth.signInWithEmailAndPassword(email, password)
				.addOnSuccessListener(new OnSuccessListener<AuthResult>() {
					@Override
					public void onSuccess(AuthResult authResult) {
						KrollDict event = new KrollDict();
						event.put("success", true);
						event.put("user", dictionaryFromUser(firebaseAuth
								.getCurrentUser()));
						callback.callAsync(getKrollObject(), event);
					}
				}).addOnFailureListener(new OnFailureListener() {
					@Override
					public void onFailure(Exception exception) {
						KrollDict event = new KrollDict();
						event.put("success", false);
						event.put("code", 0);
						event.put("description", exception.getMessage());
						callback.callAsync(getKrollObject(), event);
					}
				});
	}

	@Kroll.method
	public void signInWithCredential(KrollDict params) {
		TitaniumFirebaseAuthCredentialProxy credential = (TitaniumFirebaseAuthCredentialProxy) params
				.get("credential");
		final KrollFunction callback = (KrollFunction) params.get("callback");

		firebaseAuth.signInWithCredential(credential.getCredential())
				.addOnCompleteListener(new OnCompleteListener<AuthResult>() {
					@Override
					public void onComplete(Task<AuthResult> task) {
						KrollDict event = new KrollDict();
						event.put("success", task.isSuccessful());

						if (task.isSuccessful()) {
							event.put("user", dictionaryFromUser(firebaseAuth
									.getCurrentUser()));
						} else {
							event.put("code", 0);
							event.put("description", task.getException()
									.getMessage());
						}
						callback.callAsync(getKrollObject(), event);
					}
				});
	}

	@Kroll.method
	public void signInAnonymously(final KrollFunction callback) {
		firebaseAuth.signInAnonymously()
				.addOnSuccessListener(new OnSuccessListener<AuthResult>() {
					@Override
					public void onSuccess(AuthResult authResult) {
						KrollDict event = new KrollDict();
						event.put("success", true);
						event.put("user", dictionaryFromUser(firebaseAuth
								.getCurrentUser()));
						callback.callAsync(getKrollObject(), event);
					}
				}).addOnFailureListener(new OnFailureListener() {
					@Override
					public void onFailure(Exception exception) {
						KrollDict event = new KrollDict();
						event.put("success", false);
						event.put("code", 0);
						event.put("description", exception.getMessage());
						callback.callAsync(getKrollObject(), event);
					}
				});
	}

	/* schleera : */

	private KrollFunction onCodeSentCallback;
	private KrollFunction onErrorCallback;
	private KrollFunction onVerificationCompletedCallback;
	private PhoneAuthProvider.ForceResendingToken resendToken;

	/* Start verifying by phone number SMS */
	@Kroll.method
	public void verifyPhoneNumber(KrollDict opts) {
		Log.d(LCAT, opts.toString());
		String phoneNumber = TESTNUMBER;
		int timeout = 300000;
		if (opts.containsKeyAndNotNull("phoneNumber")) {
			phoneNumber = opts.getString("phoneNumber");
		}
		if (opts.containsKeyAndNotNull("timeout")) {
			timeout = opts.getInt("timeout");
		}
		if (opts.containsKeyAndNotNull("oncodesent")) {
			Object o = opts.get("oncodesent");
			if (o instanceof KrollFunction) {
				onCodeSentCallback = (KrollFunction) o;
			}
		}
		if (opts.containsKeyAndNotNull("onverificationcompleted")) {
			Object o = opts.get("onverificationcompleted");
			if (o instanceof KrollFunction) {
				onVerificationCompletedCallback = (KrollFunction) o;
			}
		}
		if (opts.containsKeyAndNotNull("onerror")) {
			Object o = opts.get("onerror");
			if (o instanceof KrollFunction) {
				onErrorCallback = (KrollFunction) o;
			}
		}
		PhoneAuthProvider.getInstance().verifyPhoneNumber(//
				phoneNumber, //
				timeout, //
				TimeUnit.MILLISECONDS,//
				TiApplication.getInstance().getCurrentActivity(), //
				verifyPhoneNumberCallbacks);
	}

	@Kroll.method
	public void verifyPhoneNumberWithCode(String verificationId, String code) {
		PhoneAuthCredential credential = PhoneAuthProvider.getCredential(
				verificationId, code);
		signInWithPhoneAuthCredential(credential);
	}

	@Kroll.method
	public void resendVerificationCode(String phoneNumber) {
		PhoneAuthProvider.getInstance().verifyPhoneNumber(phoneNumber,
				60, // Timeout
				TimeUnit.SECONDS, // Unit of timeout
				TiApplication.getInstance().getCurrentActivity(),
				verifyPhoneNumberCallbacks, // OnVerificationStateChangedCallbacks
				mResendToken); // ForceResendingToken from callbacks
	}

	@Kroll.method
	public KrollDict checkCurrentUser() {
		FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
		return (user != null) ? dictionaryFromUser(user) : null;
	}

	private KrollFunction onProfileUpdateCompleteCallback = null;

	@Kroll.method
	public void updateProfile(KrollDict opts) {
		String displayName = null;
		String photoUrl = null;
		String email = null;
		String password = null;

		FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
		if (user == null)
			return;
		if (opts.containsKeyAndNotNull("oncomplete")) {
			onProfileUpdateCompleteCallback = (KrollFunction) opts
					.get("onComplete");
		}
		if (opts.containsKeyAndNotNull("displayName")) {
			displayName = opts.getString("displayName");
		}
		if (opts.containsKeyAndNotNull("photoUrl")) {
			photoUrl = opts.getString("photoUrl");
		}
		if (opts.containsKeyAndNotNull("email")) {
			email = opts.getString("email");
		}
		if (opts.containsKeyAndNotNull("password")) {
			password = opts.getString("password");
		}
		if (displayName != null || photoUrl != null) {
			UserProfileChangeRequest.Builder builder = new UserProfileChangeRequest.Builder();
			if (displayName != null)
				builder.setDisplayName(displayName);
			if (photoUrl != null)
				builder.setPhotoUri(Uri.parse(photoUrl));
			UserProfileChangeRequest profileUpdates = builder.build();
			user.updateProfile(profileUpdates)
					.addOnCompleteListener(new OnCompleteListener<Void>() {
						@Override
						public void onComplete(@NonNull Task<Void> task) {
							if (task.isSuccessful()
									&& onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					}).addOnFailureListener(new OnFailureListener() {
						@Override
						public void onFailure(@NonNull Exception e) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", false);
								event.put("types", "profile");
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					});

		}
		if (email != null) {
			user.updateEmail(email)
					.addOnCompleteListener(new OnCompleteListener<Void>() {
						@Override
						public void onComplete(@NonNull Task<Void> task) {
							if (task.isSuccessful()
									&& onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					}).addOnFailureListener(new OnFailureListener() {
						@Override
						public void onFailure(@NonNull Exception e) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", false);
								event.put("types", "email");
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					});
		}
		if (password != null) {
			user.updateEmail(password)
					.addOnCompleteListener(new OnCompleteListener<Void>() {
						@Override
						public void onComplete(@NonNull Task<Void> task) {
							if (task.isSuccessful()
									&& onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								event.put("types", "password");

								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					}).addOnFailureListener(new OnFailureListener() {
						@Override
						public void onFailure(@NonNull Exception e) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", false);
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					});
		}
	}

	@Kroll.method
	public void sendEmailVerification(KrollDict opts) {
		if (opts.containsKeyAndNotNull("oncomplete")) {
			onProfileUpdateCompleteCallback = (KrollFunction) opts
					.get("onComplete");
		}
		FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
		if (user == null)
			return;
		user.sendEmailVerification().addOnCompleteListener(
				new OnCompleteListener<Void>() {
					@Override
					public void onComplete(@NonNull Task<Void> task) {
						if (task.isSuccessful()) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								event.put("types", "emailverification");
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					}
				});
	}

	@Kroll.method
	public void testPhoneVerify(String phoneNumber, String smsCode) {
		PhoneAuthProvider.getInstance().verifyPhoneNumber(phoneNumber,
				30L /* timeout */, TimeUnit.SECONDS,
				TiApplication.getAppCurrentActivity(),
				new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {

					@Override
					public void onCodeSent(
							String verificationId,
							PhoneAuthProvider.ForceResendingToken forceResendingToken) {
						// Save the verification id somewhere
						// The corresponding whitelisted code above should be
						// used to complete sign-in.
						Log.i(LCAT, "");
					}

					@Override
					public void onVerificationCompleted(
							PhoneAuthCredential phoneAuthCredential) {
						Log.i(LCAT, "");
						// Sign in with the credential
						// ...
					}

					@Override
					public void onVerificationFailed(FirebaseException e) {
						Log.i(LCAT, "");
						// ...
					}

				});
	}

	@Kroll.method
	public void testPhoneAutoRetrieve(String phoneNumber, String smsCode) {

		FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
		// FirebaseAuthSettings firebaseAuthSettings =
		// firebaseAuth.getFirebaseAuthSettings();

		// Configure faking the auto-retrieval with the whitelisted numbers.
		// firebaseAuthSettings.setAutoRetrievedSmsCodeForPhoneNumber(phoneNumber,
		// smsCode);

		PhoneAuthProvider phoneAuthProvider = PhoneAuthProvider.getInstance();
		phoneAuthProvider.verifyPhoneNumber(phoneNumber, 60L, TimeUnit.SECONDS,
				TiApplication.getAppCurrentActivity(), /* activity */
				new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {
					@Override
					public void onVerificationCompleted(
							PhoneAuthCredential credential) {
						// Instant verification is applied and a credential is
						// directly returned.
						// ...
					}

					// [START_EXCLUDE]
					@Override
					public void onVerificationFailed(FirebaseException e) {

					}
					// [END_EXCLUDE]
				});
		// [END auth_test_phone_auto]
	}

	@Kroll.method
	public void setPasswordReset(KrollDict opts) {
		String email = "";

		if (opts.containsKeyAndNotNull("oncomplete")) {
			onProfileUpdateCompleteCallback = (KrollFunction) opts
					.get("onComplete");
		}
		if (opts.containsKeyAndNotNull("email")) {
			email = opts.getString("email");
		}
		firebaseAuth.sendPasswordResetEmail(email).addOnCompleteListener(
				new OnCompleteListener<Void>() {
					@Override
					public void onComplete(@NonNull Task<Void> task) {
						if (task.isSuccessful()) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								event.put("types", "emailreset");
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}
					}
				});
	}

	@Kroll.method
	public void deleteUser(KrollDict opts) {

		if (opts.containsKeyAndNotNull("oncomplete")) {
			onProfileUpdateCompleteCallback = (KrollFunction) opts
					.get("onComplete");
		}

		FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
		if (user == null)
			return;
		user.delete().addOnCompleteListener(new OnCompleteListener<Void>() {
			@Override
			public void onComplete(@NonNull Task<Void> task) {
				if (task.isSuccessful()) {
					if (onProfileUpdateCompleteCallback != null) {
						KrollDict event = new KrollDict();
						event.put("success", true);
						event.put("types", "userdelete");
						onProfileUpdateCompleteCallback.callAsync(
								getKrollObject(), event);
					}
				}
			}
		});
	}

	@Kroll.method
	public void authWithGithub(KrollDict opts) {
		String accesstoken = null;
		if (opts.containsKeyAndNotNull("accesstoken")) {
			accesstoken = opts.getString("accesstoken");
		}
		if (opts.containsKeyAndNotNull("oncomplete")) {
			onProfileUpdateCompleteCallback = (KrollFunction) opts
					.get("onComplete");
		}

		AuthCredential credential = GithubAuthProvider
				.getCredential(accesstoken);
		FirebaseAuth firebaseAuth = FirebaseAuth.getInstance();
		firebaseAuth.signInWithCredential(credential).addOnCompleteListener(
				TiApplication.getAppCurrentActivity(),
				new OnCompleteListener<AuthResult>() {
					@Override
					public void onComplete(@NonNull Task<AuthResult> task) {
						if (!task.isSuccessful()) {
							if (onProfileUpdateCompleteCallback != null) {
								KrollDict event = new KrollDict();
								event.put("success", true);
								event.put("types", "authwithgithub");
								onProfileUpdateCompleteCallback.callAsync(
										getKrollObject(), event);
							}
						}

						// ...
					}
				});

	}

	private void signInWithPhoneAuthCredential(PhoneAuthCredential credential) {
		firebaseAuth.signInWithCredential(credential).addOnCompleteListener(
				TiApplication.getInstance().getCurrentActivity(),
				new OnCompleteListener<AuthResult>() {
					@Override
					public void onComplete(@NonNull Task<AuthResult> task) {
						KrollDict event = new KrollDict();
						if (task.isSuccessful()) {
							if (onVerificationCompletedCallback != null) {
								event.put("user",
										dictionaryFromUser(firebaseAuth
												.getCurrentUser()));
								onVerificationCompletedCallback.callAsync(
										getKrollObject(), event);
							}
						} else {
							if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
								if (onErrorCallback != null) {
									event.put("message", task.getException()
											.getMessage());
									onErrorCallback.callAsync(getKrollObject(),
											event);
								}
							}
						}

					}
				});
	}

	public void signOut() {
		firebaseAuth.signOut();
	}

	@Kroll.method
	public void fetchIDToken(boolean forceRefresh, final KrollFunction callback) {
		firebaseAuth.getCurrentUser().getIdToken(forceRefresh)
				.addOnSuccessListener(new OnSuccessListener<GetTokenResult>() {
					@Override
					public void onSuccess(GetTokenResult result) {
						KrollDict event = new KrollDict();
						event.put("success", true);
						event.put("token", result.getToken());
						callback.callAsync(getKrollObject(), event);
					}
				}).addOnFailureListener(new OnFailureListener() {
					@Override
					public void onFailure(Exception exception) {
						KrollDict event = new KrollDict();
						event.put("success", false);
						event.put("code", 0);
						event.put("description", exception.getMessage());
						callback.callAsync(getKrollObject(), event);
					}
				});
	}

	@Kroll.method
	public TitaniumFirebaseAuthCredentialProxy createAuthCredential(
			KrollDict params) {
		int type = (int) params.get("provider");
		String accessToken = (String) params.get("accessToken");
		String secretToken = (String) params.get("secretToken");
		String providerID = (String) params.get("providerID");
		String IDToken = (String) params.get("IDToken");

		return new TitaniumFirebaseAuthCredentialProxy(type, accessToken,
				secretToken, providerID, IDToken);
	}

	@Kroll.method
	public void setLanguage(String lang) {

	}

	@Kroll.getProperty
	public KrollDict getCurrentUser() {
		return dictionaryFromUser(firebaseAuth.getCurrentUser());
	}

	@Kroll.method
	public void addAuthStateDidChangeListener(KrollFunction cb) {
		authStateDidChangeCallback = cb;
	}

	@Kroll.getProperty
	public String getLanguageCode() {
		// return firebaseAuth.getLanguageCode();
		// throws "cannot find symbol"
		return null;
	}

	private KrollDict dictionaryFromUser(FirebaseUser user) {
		if (user == null) {
			return null;
		}
		KrollDict result = new KrollDict();
		result.put("email", user.getEmail());
		result.put("phoneNumber", user.getPhoneNumber());
		result.put("providerID", user.getProviderId());
		result.put("uid", user.getUid());
		result.put("photoURL", user.getPhotoUrl().toString());
		result.put("displayName", user.getDisplayName());
		result.put("emailVerified", user.isEmailVerified());
		return result;
	}

}