package org.simantics.spreadsheet.graph.synchronization;

import java.io.StringReader;

import org.simantics.databoard.adapter.AdaptException;
import org.simantics.databoard.binding.mutable.Variant;
import org.simantics.spreadsheet.graph.ExcelArrayFormula;
import org.simantics.spreadsheet.graph.ExcelFormula;
import org.simantics.spreadsheet.graph.SpreadsheetBook;
import org.simantics.spreadsheet.graph.SpreadsheetCell;
import org.simantics.spreadsheet.graph.SpreadsheetFormula;
import org.simantics.spreadsheet.graph.SpreadsheetLine;
import org.simantics.spreadsheet.graph.SpreadsheetLines;
import org.simantics.spreadsheet.graph.SpreadsheetSCLConstant;
import org.simantics.spreadsheet.graph.function.LineContentBean;
import org.simantics.spreadsheet.graph.function.LineContentBeanCell;
import org.simantics.spreadsheet.graph.parser.SheetFormulaParser;
import org.simantics.spreadsheet.graph.parser.ast.AstArrayFormulaReference;
import org.simantics.spreadsheet.graph.parser.ast.AstValue;
import org.simantics.structural.synchronization.base.CommandBuilder;
import org.simantics.structural.synchronization.base.Solver;

public class LineCommandBuilder implements CommandBuilder {
	
	private String name;
//	private boolean update;
	LineContentBean bean;
	
	public LineCommandBuilder(String name, boolean update) {
		this.name = name;
//		this.update = update;
	}

	@Override
	public void apply(Solver solver) {
		
		SpreadsheetBook book = solver.getConcreteSolver();
		
		String path = name.substring(0, name.lastIndexOf("/"));
		String lineName = name.substring(name.lastIndexOf("/")+1);
		int row = Integer.parseInt(lineName.substring(3));
		
		SpreadsheetLines node = book.ensureSubprocess(path);
		SpreadsheetLine line = node.lines.get(-row);
		if(line == null) {
			line = new SpreadsheetLine(node, row);
			node.lines.put(-row, line);
		}
		
//		line.cells.clear();
		for(int i=0;i<bean.cells.length;i++) {
			
		    SpreadsheetCell currentCell;
		    if (line.cells.size() > i) {
		        currentCell = line.cells.get(i);
		    } else {
		        currentCell = new SpreadsheetCell(line, i);
		        line.cells.add(currentCell);
		    }
		    
			LineContentBeanCell cell = bean.cells[i];
			
			try {
				Object content = cell.getContent();
				if (content instanceof Variant) {
				    Variant cellVariant = (Variant) content;
				    if (cellVariant == LineContentBeanCell.EMPTY) {
				        currentCell.setStyle(cell.getStyleId());
				        // Empty content
				        currentCell.setContent("");
//				        if (currentCell != SpreadsheetCell.EMPTY) {
//				            line.cells.remove(i);
//				            line.cells.add(i, SpreadsheetCell.EMPTY);
//				        }
				    } else if(ExcelFormula.BINDING.type().equals(cellVariant.getBinding().type())) {
	                    ExcelFormula formula = (ExcelFormula)cellVariant.getValue(ExcelFormula.BINDING);
	                    SheetFormulaParser p = new SheetFormulaParser(new StringReader(formula.expression));
	                    AstValue v = p.relation();
                        currentCell.setStyle(cell.getStyleId());
                        SpreadsheetFormula sformula = new SpreadsheetFormula(v, formula.expression);
                        currentCell.setContent(sformula);
	                } else if (ExcelArrayFormula.BINDING.type().equals(cellVariant.getBinding().type())) {
	                    ExcelArrayFormula formula = (ExcelArrayFormula)cellVariant.getValue(ExcelArrayFormula.BINDING);
	                    SheetFormulaParser p = new SheetFormulaParser(new StringReader(formula.expression));
	                    AstArrayFormulaReference v = new AstArrayFormulaReference(formula.range, p.relation());
                        currentCell.setStyle(cell.getStyleId());
                        SpreadsheetFormula sformula = new SpreadsheetFormula(v, formula.expression);
                        currentCell.setContent(sformula);
	                } else {
                        currentCell.setStyle(cell.getStyleId());
                        // DO not update constant values during update
                        currentCell.setContent(cellVariant.getValue());
	                }
				} else if (content instanceof SpreadsheetSCLConstant){
                    currentCell.setStyle(cell.getStyleId());
                    currentCell.setContent(content);
				}
			} catch (Throwable e) {
			    Object content = cell.getContent();
                if (content instanceof Variant) {
                    Variant cellVariant = (Variant) content;
                    currentCell.setStyle(cell.getStyleId());
                    currentCell.setContent(content);
                    try {
                        new Exception("failed: " + ((ExcelFormula)(cellVariant.getValue(ExcelFormula.BINDING))).expression, e).printStackTrace();
                    } catch (AdaptException e1) {
                        e1.printStackTrace();
                    }
                } else {
                    currentCell.setStyle(cell.getStyleId());
                    currentCell.setContent("LCB error happened");
                }
			}
		}
	}

	@SuppressWarnings("unchecked")
	@Override
	public <T> T getConcrete() {
		return (T)this;
	}
	
}