package Torello.JSON;

import Torello.Java.Function.IntIntTConsumer;
import Torello.Java.Additional.EffectivelyFinal;

import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;

import java.util.stream.Stream;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
import java.util.stream.DoubleStream;


public class SETTINGS_REC_BUILDER<T, U>
{
    // ********************************************************************************************
    // ********************************************************************************************
    // Parameters INTO a "SettingsRec" constructor, w/ getters
    // ********************************************************************************************
    // ********************************************************************************************


    // The first four are set in the constructor: They are final and **CANNOT BE** initialized here
    final T                     defaultValue;
    final int                   FLAGS;
    final Function<String, T>   userParser;
    final BASIC_TYPES<T>        basicType;

    // Set by the setters:  **MUST BE** initilized here, **OR ELSE**!
    private Runnable                opener                      = () -> { };// UNUSED:  A NO-OP;
    private Supplier<U>             closer                      = () -> null;
    private Consumer<T>             oneArgAcceptor              = null;
    private IntIntTConsumer<T>      threeArgAcceptor            = null;
    private CHANGEABLE_CONSUMER<T>  changeableConsumer          = null;
    private Boolean                 arrayGen1DRefOrPrimitive    = null;

    // Package Private accessors
    Runnable                opener()                    { return opener; }
    Supplier<U>             closer()                    { return closer; }
    Consumer<T>             oneArgAcceptor()            { return oneArgAcceptor; }
    IntIntTConsumer<T>      threeArgAcceptor()          { return threeArgAcceptor; }
    CHANGEABLE_CONSUMER<T>  changeableConsumer()        { return changeableConsumer; }
    Boolean                 arrayGen1DRefOrPrimitive()  { return arrayGen1DRefOrPrimitive; }


    // ********************************************************************************************
    // ********************************************************************************************
    // This Builder-Class Sole Constructor
    // ********************************************************************************************
    // ********************************************************************************************


    SETTINGS_REC_BUILDER(
            final T                     defaultValue,
            final int                   FLAGS,
            final Function<String, T>   userParser,
            final BASIC_TYPES<T>        basicType
        )
    {
        this.defaultValue   = defaultValue;
        this.FLAGS          = FLAGS;
        this.userParser     = userParser;
        this.basicType      = basicType;
    }


    // ********************************************************************************************
    // ********************************************************************************************
    // Set-And-Build Methods
    // ********************************************************************************************
    // ********************************************************************************************


    SettingsRec<T, Stream<T>> streams()
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<T, Stream<T>> THIS = (SETTINGS_REC_BUILDER<T, Stream<T>>) this;
        final EffectivelyFinal<Stream.Builder<T>> EF = new EffectivelyFinal<>(null);

        THIS.oneArgAcceptor = (T t) -> EF.f.accept(t);          // Consumer<T> 
        THIS.opener         = ()    -> EF.f = Stream.builder(); // Runnable
        THIS.closer         = ()    -> EF.f.build();            // Supplier<Stream<T>>

        return new SettingsRec<>(THIS);
    }

    SettingsRec<T, U> primitiveStreams(
            final Consumer<T> oneArgAcceptor,
            final Runnable    opener,
            final Supplier<U> closer
        )
    {
        this.oneArgAcceptor = oneArgAcceptor;
        this.opener         = opener;
        this.closer         = closer;

        return new SettingsRec<>(this);
    }


    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // Used For: JsonArray *INTO* a variety of Consumers<T>, IntIntTConsumers<T> and PrimConsumers
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


    SettingsRec<T, Void> oneArgConsumer(final Consumer<T> userProvidedOneArgConsumer)
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<T, Void> THIS = (SETTINGS_REC_BUILDER<T, Void>) this;
        THIS.oneArgAcceptor = userProvidedOneArgConsumer;
        return new SettingsRec<>(THIS);
    }

    SettingsRec<T, Void> threeArgConsumer(final IntIntTConsumer<T> userProvidedThreeArgConsumer)
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<T, Void> THIS = (SETTINGS_REC_BUILDER<T, Void>) this;
        THIS.threeArgAcceptor = userProvidedThreeArgConsumer;
        return new SettingsRec<>(THIS);
    }

    // The actual user consumer is set into the SettingsRec *AFTER* the SettingsRec constructor
    SettingsRec<T, Void> updateableConsumer(final boolean oneArgOrThreeArg)
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<T, Void> THIS    = (SETTINGS_REC_BUILDER<T, Void>) this;
        final CHANGEABLE_CONSUMER<T>        cc      = new CHANGEABLE_CONSUMER<>(oneArgOrThreeArg);
        
        THIS.changeableConsumer = cc;
        this.opener             = cc::openerCode;

        if (oneArgOrThreeArg)   THIS.oneArgAcceptor     = cc.wrappedUserConsumerV1;
        else                    THIS.threeArgAcceptor   = cc.wrappedUserConsumerV2;

        return new SettingsRec<>(THIS);
    }


    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // Used For: JsonArray *INTO* Multi-Dimensinal Arrays
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    // *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***


    SettingsRec<T, Stream<T>> dimNArray()
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<T, Stream<T>> THIS = 
            (SETTINGS_REC_BUILDER<T, Stream<T>>) this;

        final EffectivelyFinal<Stream.Builder<T>> EF = new EffectivelyFinal<>(null);

        THIS.oneArgAcceptor = (T t) -> EF.f.accept(t);          // Consumer<T> 
        THIS.opener         = ()    -> EF.f = Stream.builder(); // Runnable
        THIS.closer         = ()    -> EF.f.build();            // Supplier<Stream<T>>;

        THIS.arrayGen1DRefOrPrimitive = false;

        return new SettingsRec<>(THIS);
    }

    SettingsRec<Integer, IntStream> dimNArrayIntPrim()
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<Integer, IntStream> THIS = 
            (SETTINGS_REC_BUILDER<Integer, IntStream>) this;

        final EffectivelyFinal<IntStream.Builder> EF = new EffectivelyFinal<>(null);

        THIS.oneArgAcceptor = (Integer i)   -> EF.f.accept(i);              // Consumer<Integer> 
        THIS.opener         = ()            -> EF.f = IntStream.builder();  // Runnable
        THIS.closer         = ()            -> EF.f.build();                // Supplier<IntStream>;

        THIS.arrayGen1DRefOrPrimitive = false;

        return new SettingsRec<>(THIS);
    }

    SettingsRec<Long, LongStream> dimNArrayLongPrim()
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<Long, LongStream> THIS = 
            (SETTINGS_REC_BUILDER<Long, LongStream>) this;

        final EffectivelyFinal<LongStream.Builder> EF = new EffectivelyFinal<>(null);

        THIS.oneArgAcceptor = (Long l)  -> EF.f.accept(l);              // Consumer<Long> 
        THIS.opener         = ()        -> EF.f = LongStream.builder();  // Runnable
        THIS.closer         = ()        -> EF.f.build();                // Supplier<LongStream>;

        THIS.arrayGen1DRefOrPrimitive = false;

        return new SettingsRec<>(THIS);
    }

    SettingsRec<Double, DoubleStream> dimNArrayDoublePrim()
    {
        @SuppressWarnings("unchecked")
        final SETTINGS_REC_BUILDER<Double, DoubleStream> THIS = 
            (SETTINGS_REC_BUILDER<Double, DoubleStream>) this;

        final EffectivelyFinal<DoubleStream.Builder> EF = new EffectivelyFinal<>(null);

        THIS.oneArgAcceptor = (Double d)    -> EF.f.accept(d);                  // Consumer<Double> 
        THIS.opener         = ()            -> EF.f = DoubleStream.builder();   // Runnable
        THIS.closer         = ()            -> EF.f.build();                    // Supplier<DoubleStream>;

        this.arrayGen1DRefOrPrimitive = false;

        return new SettingsRec<>(THIS);
    }

}