package org.ntlab.traceDebugger;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.ITableColorProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TreeNode;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.ntlab.traceDebugger.analyzerProvider.Alias.AliasType;
import org.ntlab.traceDebugger.analyzerProvider.DeltaMarkerManager;

public class DeltaMarkerLabelProvider extends LabelProvider implements ITableLabelProvider, ITableColorProvider {
	public static final Color COORDINATOR_LABEL_COLOR = new Color(Display.getDefault(), 255, 255, 153);
	public static final Color SETTER_SIDE_LABEL_COLOR = new Color(Display.getDefault(), 255, 204, 216);
	public static final Color GETTER_SIDE_LABEL_COLOR = new Color(Display.getDefault(), 153, 255, 255);
	public static final Color BOTTOM_LABEL_COLOR = new Color(Display.getDefault(), 255, 204, 153);
	
	@Override
	public String getColumnText(Object element, int columnIndex) {
		if (element instanceof TreeNode) {
			Object value = ((TreeNode)element).getValue();
			if (value instanceof String) return (columnIndex == 0) ? (String)value : null;
			if (value instanceof IMarker) {
				IMarker marker = (IMarker)value;
				try {
					switch (columnIndex) {
					case 0:
						return "" + marker.getAttribute(IMarker.MESSAGE);
					case 1:
						Object objectId = marker.getAttribute(DeltaMarkerManager.DELTA_MARKER_ATR_OBJECT_ID);
						return (objectId != null) ? objectId.toString() : null;
					case 2:
						Object objectType = marker.getAttribute(DeltaMarkerManager.DELTA_MARKER_ATR_OBJECT_TYPE);
						if (objectType == null) return null;
						StringBuilder simpleObjectTypeName = new StringBuilder();
						String[] simpleNames = objectType.toString().split(" -> ");
						simpleObjectTypeName.append(simpleNames[0].substring(simpleNames[0].lastIndexOf(".") + 1));
						if (simpleNames.length == 2) {
							simpleObjectTypeName.append(" -> ");
							simpleObjectTypeName.append(simpleNames[1].substring(simpleNames[1].lastIndexOf(".") + 1));
						}
						return simpleObjectTypeName.toString();
					case 3:
						Object obj = marker.getAttribute(DeltaMarkerManager.DELTA_MARKER_ATR_ALIAS_TYPE);
						if (!(obj instanceof AliasType)) return null;
						AliasType aliasType = (AliasType)obj;
						return getAliasTypeName(aliasType);
					case 4:
						String resource = marker.getResource().toString();
						return resource.substring(resource.lastIndexOf("/") + 1);
					case 5:
						return "" + marker.getAttribute(IMarker.LINE_NUMBER);
					}
				} catch(CoreException e) {
					e.printStackTrace();
				}
			}
		}
		return "テスト用テキスト";
	}
	
	private String getAliasTypeName(AliasType aliasType) {
		String msg = aliasType.toString();
		switch (aliasType) {
		case METHOD_INVOCATION:
		case CONSTRACTOR_INVOCATION:
			return TraceDebuggerPlugin.isJapanese() ? "呼び出し式" : "Invocation";
		case RECEIVER:
			return TraceDebuggerPlugin.isJapanese() ? "レシーバ" : convertFromSnakeToPascal(msg);
		case ACTUAL_ARGUMENT:
			return TraceDebuggerPlugin.isJapanese() ? "実引数" : convertFromSnakeToPascal(msg);
		case FORMAL_PARAMETER:
			return TraceDebuggerPlugin.isJapanese() ? "仮引数" : convertFromSnakeToPascal(msg);
		case RETURN_VALUE:
			return TraceDebuggerPlugin.isJapanese() ? "戻り値" : convertFromSnakeToPascal(msg);
		case THIS:
			return TraceDebuggerPlugin.isJapanese() ? "thisの参照" : convertFromSnakeToPascal(msg);
		case CONTAINER:
			return TraceDebuggerPlugin.isJapanese() ? "コンテナの参照" : convertFromSnakeToPascal(msg);
		case FIELD:
			return TraceDebuggerPlugin.isJapanese() ? "フィールド参照" : convertFromSnakeToPascal(msg);
		case ARRAY:
			return TraceDebuggerPlugin.isJapanese() ? "配列参照" : convertFromSnakeToPascal(msg);
		case ARRAY_ELEMENT:
			return TraceDebuggerPlugin.isJapanese() ? "配列要素参照" : convertFromSnakeToPascal(msg);
		case ARRAY_CREATE:
			return TraceDebuggerPlugin.isJapanese() ? "配列生成式" : convertFromSnakeToPascal(msg);
		default:
			return "";
		}
	}

	private String convertFromSnakeToPascal(String str) {
		// note: スネークケースをパスカルケース(ただし単語間を空白で区切る)に変える
		String base = str.toLowerCase().replace("_", " ");
		StringBuilder sb = new StringBuilder();
		for (int index = -1;;) {
			sb.append(base.substring(index + 1, index + 2).toUpperCase());
			int nextIndex = base.indexOf(" ", index + 1);
			if (nextIndex == -1) {
				sb.append(base.substring(index + 2));
				break;
			} else {
				sb.append(base.substring(index + 2, nextIndex + 1));
				index = nextIndex;
			}
		}
		return sb.toString();		
	}
	
	@Override
	public Image getColumnImage(Object element, int columnIndex) {
		return null;
	}

	@Override
	public Color getForeground(Object element, int columnIndex) {
		return null;
	}

	@Override
	public Color getBackground(Object element, int columnIndex) {
		if (element instanceof TreeNode) {
			Object value = ((TreeNode)element).getValue();
			if (value instanceof String) {
				String str = (String)value;
				if (str.contains("RelatedPoint")) {
					return BOTTOM_LABEL_COLOR;
				} else if (str.contains("Coordinator")) {
					return COORDINATOR_LABEL_COLOR;
				} else if (str.contains("Src")) {
					return SETTER_SIDE_LABEL_COLOR;
				} else if (str.contains("Dst")) {
					return GETTER_SIDE_LABEL_COLOR;
				}
				return null;
			}
			if (value instanceof IMarker) {
				IMarker marker = (IMarker)value;
				try {
					String markerType = marker.getType();
					if (markerType.equals(DeltaMarkerManager.BOTTOM_DELTA_MARKER)) {
						return BOTTOM_LABEL_COLOR;
					} else if (markerType.equals(DeltaMarkerManager.COORDINATOR_DELTA_MARKER)) {
						return COORDINATOR_LABEL_COLOR;
					} else if (markerType.equals(DeltaMarkerManager.SRC_SIDE_DELTA_MARKER)) {
						return SETTER_SIDE_LABEL_COLOR;
					} else if (markerType.equals(DeltaMarkerManager.DST_SIDE_DELTA_MARKER)) {
						return GETTER_SIDE_LABEL_COLOR;
					}
				} catch (CoreException e) {
					e.printStackTrace();
				}
			}
		}
		return null;
	}	
}