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/*
 * This file is part of "lunisolar-magma".
 *
 * (C) Copyright 2015 Lunisolar (http://lunisolar.eu/).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package eu.lunisolar.magma.func.function.from;
import javax.annotation.Nonnull; // NOSONAR
import javax.annotation.Nullable; // NOSONAR
import java.util.Comparator; // NOSONAR
import java.util.Objects; // NOSONAR
import eu.lunisolar.magma.basics.*; //NOSONAR
import eu.lunisolar.magma.basics.builder.*; // NOSONAR
import eu.lunisolar.magma.basics.exceptions.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.type.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.domain.*; // NOSONAR
import eu.lunisolar.magma.func.*; // NOSONAR
import eu.lunisolar.magma.func.operator.unary.*; // NOSONAR
import eu.lunisolar.magma.func.operator.binary.*; // NOSONAR
import eu.lunisolar.magma.func.operator.ternary.*; // NOSONAR
import eu.lunisolar.magma.func.function.*; // NOSONAR
import eu.lunisolar.magma.func.function.from.*; // NOSONAR
import eu.lunisolar.magma.func.function.to.*; // NOSONAR
import eu.lunisolar.magma.func.function.conversion.*; // NOSONAR
import eu.lunisolar.magma.func.predicate.*; // NOSONAR
import eu.lunisolar.magma.func.supplier.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.bi.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.tri.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.obj.*; // NOSONAR
import eu.lunisolar.magma.func.action.*; // NOSONAR

/**
 * Non-throwing functional interface (lambda) LBiLongFunction for Java 8.
 *
 * Type: function
 *
 * Domain (lvl: 2): long l1,long l2
 *
 * Co-domain: R
 *
 * @see LBiLongFunctionX
 */
@FunctionalInterface
@SuppressWarnings("UnusedDeclaration")
public interface LBiLongFunction extends LBiLongFunctionX, MetaFunction, MetaInterface.NonThrowing { // NOSONAR

	static final String DESCRIPTION = "LBiLongFunction: R doApply(long l1,long l2)";

	@Nullable
	R doApply(long l1, long l2);

	/** Function call that handles exceptions by always nesting checked exceptions and propagating the otheres as is. */
	default R nestingDoApply(long l1, long l2) {
		return this.doApply(l1, l2);
	}

	/** Function call that handles exceptions by always propagating them as is even when they are undeclared checked ones. */
	default R shovingDoApply(long l1, long l2) {
		return this.doApply(l1, l2);
	}

	static final LSupplier NULL_VALUE_MESSAGE_SUPPLIER = () -> "Evaluated value by nonNullDoApply() method cannot be null (" + DESCRIPTION + ").";

	/** Function call that ensures the result is not null */
	@Nonnull
	default R nonNullDoApply(long l1, long l2) {
		return Null.requireNonNull(doApply(l1, l2), NULL_VALUE_MESSAGE_SUPPLIER);
	}

	/** Returns description of the functional interface. */
	@Nonnull
	default String functionalInterfaceDescription() {
		return LBiLongFunction.DESCRIPTION;
	}

	/** Captures arguments but delays the evaluation. */
	default LSupplier captureBiLongFunc(long l1, long l2) {
		return () -> this.doApply(l1, l2);
	}

	/** Creates function that always returns the same value. */
	static  LBiLongFunction constant(R r) {
		return (l1, l2) -> r;
	}

	/** Captures single parameter function into this interface where only 1st parameter will be used. */
	@Nonnull
	static  LBiLongFunction apply1st(@Nonnull LLongFunction func) {
		return (l1, l2) -> func.doApply(l1);
	}

	/** Captures single parameter function into this interface where only 2nd parameter will be used. */
	@Nonnull
	static  LBiLongFunction apply2nd(@Nonnull LLongFunction func) {
		return (l1, l2) -> func.doApply(l2);
	}

	/** Convenient method in case lambda expression is ambiguous for the compiler (that might happen for overloaded methods accepting different interfaces). */
	@Nonnull
	static  LBiLongFunction l(final @Nonnull LBiLongFunction lambda) {
		Null.nonNullArg(lambda, "lambda");
		return lambda;
	}

	// 

	/** Wraps opposite (throwing vs non-throwing) instance. */
	@Nonnull
	static  LBiLongFunction wrap(final @Nonnull LBiLongFunctionX other) {
		return other::nestingDoApply;
	}

	// 

	// 

	/** Allows to manipulate the domain of the function. */
	@Nonnull
	default LBiLongFunction biLongFuncComposeLong(@Nonnull final LLongUnaryOperator before1, @Nonnull final LLongUnaryOperator before2) {
		Null.nonNullArg(before1, "before1");
		Null.nonNullArg(before2, "before2");
		return (final long v1, final long v2) -> this.doApply(before1.doApplyAsLong(v1), before2.doApplyAsLong(v2));
	}

	/** Allows to manipulate the domain of the function. */
	@Nonnull
	default  LBiFunction biLongFuncCompose(@Nonnull final LToLongFunction before1, @Nonnull final LToLongFunction before2) {
		Null.nonNullArg(before1, "before1");
		Null.nonNullArg(before2, "before2");
		return (V1 v1, V2 v2) -> this.doApply(before1.doApplyAsLong(v1), before2.doApplyAsLong(v2));
	}

	// 

	// 

	/** Combines two functions together in a order. */
	@Nonnull
	default  LBiLongFunction then(@Nonnull LFunction after) {
		Null.nonNullArg(after, "after");
		return (long l1, long l2) -> after.doApply(this.doApply(l1, l2));
	}

	/** Combines two functions together in a order. */
	@Nonnull
	default LBiLongConsumer then(@Nonnull LConsumer after) {
		Null.nonNullArg(after, "after");
		return (long l1, long l2) -> after.doAccept(this.doApply(l1, l2));
	}

	// 
	// 

	/** Converts to non-throwing variant (if required). */
	@Nonnull
	default LBiLongFunction nestingBiLongFunc() {
		return this;
	}

	/** Converts to throwing variant (RuntimeException). */
	@Nonnull
	default LBiLongFunctionX nestingBiLongFuncX() {
		return this;
	}

	/** Converts to non-throwing variant that will propagate checked exception as it would be unchecked - there is no exception wrapping involved (at least not here). */
	default LBiLongFunction shovingBiLongFunc() {
		return this;
	}

	/** Converts to throwing variant (RuntimeException) that will propagate checked exception as it would be unchecked - there is no exception wrapping involved (at least not here). */
	default LBiLongFunctionX shovingBiLongFuncX() {
		return this;
	}

	// 

	/** Converts to function that makes sure that the result is not null. */
	@Nonnull
	default LBiLongFunction nonNullBiLongFunc() {
		return this::nonNullDoApply;
	}

}




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