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	/*
	* Copyright (C) 2011, 2013-2021 The JavaParser Team.
	*
	* This file is part of JavaParser.
	*
	* JavaParser can be used either under the terms of
	* a) the GNU Lesser General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	* b) the terms of the Apache License
	*
	* You should have received a copy of both licenses in LICENCE.LGPL and
	* LICENCE.APACHE. Please refer to those files for details.
	*
	* JavaParser is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Lesser General Public License for more details.
	*/

	package com.github.javaparser.printer.configuration;

	import java.util.Arrays;
	import java.util.HashSet;
	import java.util.Optional;
	import java.util.Set;

	import com.github.javaparser.printer.Printer;
	import com.github.javaparser.printer.configuration.Indentation.IndentType;
	import com.github.javaparser.utils.Utils;

	/**
	* Configuration options for the {@link Printer}.
	*/
	public class DefaultPrinterConfiguration implements PrinterConfiguration {

	public enum ConfigOption {
	/**
	* Order imports alphabetically
	*/
	ORDER_IMPORTS(Boolean.class),
	/**
	* Print comments only. It can be combined with {@code PRINT_JAVADOC} to print regular comments and javadoc.
	*/
	PRINT_COMMENTS(Boolean.class),
	/**
	* Print javadoc comments only. It can be combined with {@code PRINT_COMMENTS} to print regular javadoc and comments
	*/
	PRINT_JAVADOC(Boolean.class),
	SPACE_AROUND_OPERATORS(Boolean.class),
	COLUMN_ALIGN_PARAMETERS(Boolean.class),
	COLUMN_ALIGN_FIRST_METHOD_CHAIN(Boolean.class),
	/**
	* Indent the case when it is true, don't if false
	* <pre>{@code
	* switch(x) { switch(x) {
	* case 1: case 1:
	* return y; return y;
	* case 2: case 2:
	* return z; return x;
	* } }
	* }<pre>
	*/
	INDENT_CASE_IN_SWITCH(Boolean.class),
	/**
	* By default enum constants get aligned like this:
	* <pre>{@code
	* enum X {
	* A, B, C, D
	* }
	* }<pre>
	* until the amount of constants passes this currentValue (5 by default).
	* Then they get aligned like this:
	* <pre>{@code
	* enum X {
	* A,
	* B,
	* C,
	* D,
	* E,
	* F,
	* G
	* }
	* }</pre>
	* Set it to a very large number (e.g. {@code Integer.MAX_VALUE} to always align horizontally.
	* Set it to 1 or less to always align vertically.
	*/
	MAX_ENUM_CONSTANTS_TO_ALIGN_HORIZONTALLY(Integer.class, Integer.valueOf(5)),
	END_OF_LINE_CHARACTER(String.class, Utils.SYSTEM_EOL),
	/**
	* Indentation proprerty
	*/
	INDENTATION(Indentation.class, new Indentation(IndentType.SPACES, 4));

	Object defaultValue;

	Class type;

	// DefaultConfigurationOption without currentValue
	ConfigOption(Class clazz) {
	this.type = clazz;
	}

	// DefaultConfigurationOption with initial currentValue
	ConfigOption(Class clazz, Object value) {
	this.type = clazz;
	if (!(this.type.isAssignableFrom(value.getClass()))) {
	throw new IllegalArgumentException(String.format("%s is not an instance of %s", value, type.getName()));
	}
	this.defaultValue = value;
	}


	}

	// contains all available options
	// an option contained in the set is considered as activated
	private Set<ConfigurationOption> defaultOptions = new HashSet<>(Arrays.asList(
	new DefaultConfigurationOption(ConfigOption.PRINT_COMMENTS, ConfigOption.PRINT_COMMENTS.defaultValue),
	new DefaultConfigurationOption(ConfigOption.PRINT_JAVADOC, ConfigOption.PRINT_JAVADOC.defaultValue),
	new DefaultConfigurationOption(ConfigOption.SPACE_AROUND_OPERATORS, ConfigOption.SPACE_AROUND_OPERATORS.defaultValue),
	new DefaultConfigurationOption(ConfigOption.INDENT_CASE_IN_SWITCH, ConfigOption.INDENT_CASE_IN_SWITCH.defaultValue),
	new DefaultConfigurationOption(ConfigOption.MAX_ENUM_CONSTANTS_TO_ALIGN_HORIZONTALLY, ConfigOption.MAX_ENUM_CONSTANTS_TO_ALIGN_HORIZONTALLY.defaultValue),
	new DefaultConfigurationOption(ConfigOption.END_OF_LINE_CHARACTER, ConfigOption.END_OF_LINE_CHARACTER.defaultValue),
	new DefaultConfigurationOption(ConfigOption.INDENTATION, ConfigOption.INDENTATION.defaultValue)
	));

	public DefaultPrinterConfiguration() {
	}

	/*
	* add the specified option if it does not exist or replace the existing option
	*/
	@Override
	public PrinterConfiguration addOption(ConfigurationOption option) {
	removeOption(option);
	defaultOptions.add(option);
	return this;
	}

	/*
	* remove the specified option
	*/
	@Override
	public PrinterConfiguration removeOption(ConfigurationOption option) {
	defaultOptions.remove(option);
	return this;
	}

	/*
	* True if an option is activated
	*/
	@Override
	public boolean isActivated(ConfigurationOption option) {
	return defaultOptions.contains(option);
	}

	/*
	* returns the specified option
	*/
	@Override
	public Optional<ConfigurationOption> get(ConfigurationOption option) {
	return defaultOptions.stream().filter(o-> o.equals(option)).findFirst();
	}

	/**
	* returns all options configured
	*/
	@Override
	public Set<ConfigurationOption> get() {
	return defaultOptions;
	}

	}

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