/*=============================================================================#
 # Copyright (c) 2005, 2017 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.internal.r.ui.preferences;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.core.filebuffers.IDocumentSetupParticipant;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.editors.text.EditorsUI;

import org.eclipse.statet.ecommons.preferences.core.Preference;
import org.eclipse.statet.ecommons.preferences.core.Preference.StringArrayPref;
import org.eclipse.statet.ecommons.preferences.core.util.PreferenceUtils;
import org.eclipse.statet.ecommons.preferences.ui.ConfigurationBlock;
import org.eclipse.statet.ecommons.preferences.ui.ConfigurationBlockPreferencePage;
import org.eclipse.statet.ecommons.text.ui.presentation.AbstractTextStylesConfigurationBlock;
import org.eclipse.statet.ecommons.text.ui.settings.TextStyleManager;

import org.eclipse.statet.internal.r.ui.RUIPlugin;
import org.eclipse.statet.ltk.ui.LTKUIPreferences;
import org.eclipse.statet.ltk.ui.sourceediting.SourceEditorViewerConfiguration;
import org.eclipse.statet.ltk.ui.util.CombinedPreferenceStore;
import org.eclipse.statet.r.core.RCore;
import org.eclipse.statet.r.core.rlang.RTerminal;
import org.eclipse.statet.r.core.source.RDocumentContentInfo;
import org.eclipse.statet.r.core.source.RDocumentSetupParticipant;
import org.eclipse.statet.r.ui.RUI;
import org.eclipse.statet.r.ui.RUIPreferenceConstants;
import org.eclipse.statet.r.ui.sourceediting.RSourceViewerConfiguration;
import org.eclipse.statet.r.ui.text.r.IRTextTokens;


public class RTextStylesPreferencePage extends ConfigurationBlockPreferencePage {
	
	
	public RTextStylesPreferencePage() {
		setPreferenceStore(RUIPlugin.getInstance().getPreferenceStore());
	}
	
	
	@Override
	protected ConfigurationBlock createConfigurationBlock() {
		return new RTextStylesPreferenceBlock();
	}
	
}


class RTextStylesPreferenceBlock extends AbstractTextStylesConfigurationBlock {
	
	
	public RTextStylesPreferenceBlock() {
	}
	
	
	@Override
	protected String getSettingsGroup() {
		return RUIPreferenceConstants.R.TS_GROUP_ID;
	}
	
	@Override
	protected SyntaxNode[] createItems() {
		final List<StyleNode> identifierChilds= new ArrayList<>();
		identifierChilds.add(
				new StyleNode(Messages.RSyntaxColoring_Identifier_Assignment_label, getIdentifierItemsDescription(RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_ASSIGNMENT_ITEMS),
						RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_ASSIGNMENT_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_DEFAULT_ROOT),
							SyntaxNode.createUseOtherStyle(RUIPreferenceConstants.R.TS_ASSIGNMENT_ROOT, Messages.RSyntaxColoring_Assignment_label),
							SyntaxNode.createUseCustomStyle()
						}, null ));
		identifierChilds.add(
				new StyleNode(Messages.RSyntaxColoring_Identifier_Logical_label, getIdentifierItemsDescription(RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_LOGICAL_ITEMS),
						RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_LOGICAL_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_DEFAULT_ROOT),
							SyntaxNode.createUseOtherStyle(RUIPreferenceConstants.R.TS_OPERATORS_SUB_LOGICAL_ROOT, Messages.RSyntaxColoring_Operators_Logical_label),
							SyntaxNode.createUseCustomStyle()
						}, null ));
		identifierChilds.add(
				new StyleNode(Messages.RSyntaxColoring_Identifier_Flowcontrol_label, getIdentifierItemsDescription(RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_FLOWCONTROL_ITEMS),
						RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_FLOWCONTROL_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_DEFAULT_ROOT),
							SyntaxNode.createUseOtherStyle(RUIPreferenceConstants.R.TS_FLOWCONTROL_ROOT, Messages.RSyntaxColoring_Flowcontrol_label),
							SyntaxNode.createUseCustomStyle()
						}, null ));
		identifierChilds.add(
				new StyleNode(Messages.RSyntaxColoring_Identifier_Custom1_label, getIdentifierItemsDescription(RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_CUSTOM1_ITEMS),
						RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_CUSTOM1_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_DEFAULT_ROOT),
							SyntaxNode.createUseCustomStyle()
						}, null ));
		identifierChilds.add(
				new StyleNode(Messages.RSyntaxColoring_Identifier_Custom2_label, getIdentifierItemsDescription(RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_CUSTOM2_ITEMS),
						RUIPreferenceConstants.R.TS_IDENTIFIER_SUB_CUSTOM2_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_DEFAULT_ROOT),
							SyntaxNode.createUseCustomStyle()
						}, null ));
		
		return new SyntaxNode[] {
			new CategoryNode(Messages.RSyntaxColoring_CodeCategory_label, new SyntaxNode[] {
				new StyleNode(Messages.RSyntaxColoring_Default_label, Messages.RSyntaxColoring_Default_description,
						RUIPreferenceConstants.R.TS_DEFAULT_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, identifierChilds.toArray(new SyntaxNode[identifierChilds.size()]) ),
				new StyleNode(Messages.RSyntaxColoring_Undefined_label, Messages.RSyntaxColoring_Undefined_description,
						RUIPreferenceConstants.R.TS_UNDEFINED_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_String_label, Messages.RSyntaxColoring_String_description,
						RUIPreferenceConstants.R.TS_STRING_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Numbers_label, Messages.RSyntaxColoring_Numbers_description,
						RUIPreferenceConstants.R.TS_NUMBERS_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, new SyntaxNode[] {
					new StyleNode(Messages.RSyntaxColoring_Numbers_Integer_label, Messages.RSyntaxColoring_Numbers_Integer_description,
							RUIPreferenceConstants.R.TS_NUMBERS_SUB_INT_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_NUMBERS_ROOT),
								SyntaxNode.createUseCustomStyle() }, null ),
					new StyleNode(Messages.RSyntaxColoring_Numbers_Complex_label, Messages.RSyntaxColoring_Numbers_Complex_description,
							RUIPreferenceConstants.R.TS_NUMBERS_SUB_CPLX_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_NUMBERS_ROOT),
								SyntaxNode.createUseCustomStyle() }, null ),
				}),
				new StyleNode(Messages.RSyntaxColoring_SpecialConstants_label, addListToTooltip(Messages.RSyntaxColoring_SpecialConstants_description, IRTextTokens.SPECIALCONST),
						RUIPreferenceConstants.R.TS_SPECIAL_CONSTANTS_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_LogicalConstants_label, addListToTooltip(Messages.RSyntaxColoring_LogicalConstants_description, IRTextTokens.LOGICALCONST),
						RUIPreferenceConstants.R.TS_LOGICAL_CONSTANTS_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Flowcontrol_label, addListToTooltip(Messages.RSyntaxColoring_Flowcontrol_description, IRTextTokens.FLOWCONTROL),
						RUIPreferenceConstants.R.TS_FLOWCONTROL_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Separators_label, addListToTooltip(Messages.RSyntaxColoring_Separators_description, IRTextTokens.SEPARATOR),
						RUIPreferenceConstants.R.TS_SEPARATORS_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Assignment_label, addListToTooltip(Messages.RSyntaxColoring_Assignment_description, new String[] { "<-", "->", "<<-", "->>", addExtraStyleNoteToTooltip("= ({0})") }), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
						RUIPreferenceConstants.R.TS_ASSIGNMENT_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, new SyntaxNode[] {
					new StyleNode(Messages.RSyntaxColoring_Assignment_Equalsign_label, addListToTooltip(Messages.RSyntaxColoring_Assignment_Equalsign_description, new String[] { "=" }),  //$NON-NLS-1$
							RUIPreferenceConstants.R.TS_ASSIGNMENT_SUB_EQUALSIGN_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_ASSIGNMENT_ROOT),
								SyntaxNode.createUseCustomStyle()
							}, null ),
				}),
				new StyleNode(Messages.RSyntaxColoring_Operators_label, Messages.RSyntaxColoring_Operators_description,
						RUIPreferenceConstants.R.TS_OTHER_OPERATORS_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, new SyntaxNode[] {
					new StyleNode(Messages.RSyntaxColoring_Operators_Logical_label, addListToTooltip(Messages.RSyntaxColoring_Operators_Logical_description, IRTextTokens.OP_SUB_LOGICAL),
							RUIPreferenceConstants.R.TS_OPERATORS_SUB_LOGICAL_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_OTHER_OPERATORS_ROOT),
								SyntaxNode.createUseCustomStyle()
							}, null ),
					new StyleNode(Messages.RSyntaxColoring_Operators_Relational_label, addListToTooltip(Messages.RSyntaxColoring_Operators_Relational_description, IRTextTokens.OP_SUB_RELATIONAL),
							RUIPreferenceConstants.R.TS_OPERATORS_SUB_RELATIONAL_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_OTHER_OPERATORS_ROOT),
								SyntaxNode.createUseCustomStyle()
							}, null ),
					new StyleNode(Messages.RSyntaxColoring_Operators_Userdefined_label, addListToTooltip(Messages.RSyntaxColoring_Operators_Userdefined_description, new String[] { "%\u2026%" }),  //$NON-NLS-1$
							RUIPreferenceConstants.R.TS_OPERATORS_SUB_USERDEFINED_ROOT, new SyntaxNode.UseStyle[] {
								SyntaxNode.createUseNoExtraStyle(RUIPreferenceConstants.R.TS_OTHER_OPERATORS_ROOT),
								SyntaxNode.createUseCustomStyle()
							}, null ),
				}),
				new StyleNode(Messages.RSyntaxColoring_Grouping_label, Messages.RSyntaxColoring_Grouping_description,
						RUIPreferenceConstants.R.TS_GROUPING_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Indexing_label, Messages.RSyntaxColoring_Indexing_description,
						RUIPreferenceConstants.R.TS_INDEXING_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
			}),
			new CategoryNode(Messages.RSyntaxColoring_CommentsCategory_label, new SyntaxNode[] {
				new StyleNode(Messages.RSyntaxColoring_Comment_label, Messages.RSyntaxColoring_Comment_description,
						RUIPreferenceConstants.R.TS_COMMENT_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_TaskTag_label, Messages.RSyntaxColoring_TaskTag_description,
						RUIPreferenceConstants.R.TS_TASK_TAG_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_Roxygen_label, Messages.RSyntaxColoring_Roxygen_description,
						RUIPreferenceConstants.R.TS_ROXYGEN_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
				new StyleNode(Messages.RSyntaxColoring_RoxygenTag_label, Messages.RSyntaxColoring_RoxygenTag_description,
						RUIPreferenceConstants.R.TS_ROXYGEN_TAG_ROOT, new SyntaxNode.UseStyle[] {
							SyntaxNode.createUseCustomStyle()
						}, null ),
			}),
		};
	}
	
	private String getIdentifierItemsDescription(final String key) {
		final Preference<String[]> pref= new StringArrayPref(RUI.BUNDLE_ID, key);
		final String[] value= PreferenceUtils.getInstancePrefs().getPreferenceValue(pref);
		return addListToTooltip(Messages.RSyntaxColoring_Identifier_Items_description, value);
	}
	
	@Override
	protected String getPreviewFileName() {
		return "RTextStylesPreviewCode.txt"; //$NON-NLS-1$
	}
	
	@Override
	protected IDocumentSetupParticipant getDocumentSetupParticipant() {
		return new RDocumentSetupParticipant();
	}
	
	@Override
	protected SourceEditorViewerConfiguration getSourceEditorViewerConfiguration(
			final IPreferenceStore preferenceStore, final TextStyleManager textStyles) {
		return new RSourceViewerConfiguration(RDocumentContentInfo.INSTANCE, null,
				RCore.getDefaultsAccess(),
				CombinedPreferenceStore.createStore(
						preferenceStore,
						LTKUIPreferences.getPreferenceStore(),
						EditorsUI.getPreferenceStore() ),
				textStyles );
	}
	
	protected String addListToTooltip(final String tooltip, final RTerminal[] listItems) {
		return addListToTooltip(tooltip, RTerminal.textArray(listItems));
	}
	
}