//Sets function parameters matching a provided regex at a provided index.
//@author DrFrugal
//@category Functions
//@keybinding 
//@menupath 
//@toolbar bomb


import java.util.List;
import java.util.regex.Pattern;

import ghidra.app.script.GhidraScript;
import ghidra.program.model.data.DataType;
import ghidra.program.model.listing.Function;
import ghidra.program.model.listing.Parameter;
import ghidra.program.model.symbol.SourceType;
import ghidra.util.exception.DuplicateNameException;
import ghidra.util.exception.InvalidInputException;

public class SetFuncParamByIndexBulk extends GhidraScript {

    public void run() throws Exception {
    	
    	Pattern pattern = BulkUtils.askForRegex(this, "entire function name");
		List<Function> matchingFunctions = BulkUtils.getFunctionsByRegex(this, pattern);
		boolean confirmed = BulkUtils.showFunctionConfirmationDialog(matchingFunctions, "Confirm " + matchingFunctions.size() + " matches", -1, "Please confirm these matches before we proceed.");
        if (!confirmed) {
            println("Abort: negative confirmation");
            return;
        }
        
    	Integer paramIndex = BulkUtils.askForInteger(this, "Parameter index:");
    	if(paramIndex == null) {
    		println("Abort: index couldn't be parsed");
            return;
    	}
    	
    	DataType paramType = BulkUtils.askForDataType(this, "Parameter type");
        if (paramType == null) {
            println("Abort: no type selected");
            return;
        }
        
        String paramName = askString(null, "Parameter name:");
        if(!BulkUtils.isValidCParameterName(paramName)) {
        	println("Abort: invalid C parameter name");
        	return;
        }
    	
        int success = 0;
        int fail = 0;
        for(Function function : matchingFunctions) {
        	Parameter param = function.getParameter(paramIndex);
        	if(param == null) {
        		println("Unable to retrieve parameter in " + function.getName());
        		fail++;
        		continue;
        	}
        	if(param.isAutoParameter()) {
        		println("Skipping auto parameter in " + function.getName());
        		fail++;
        		continue;
        	}
        	try {
				param.setName(paramName, SourceType.USER_DEFINED);
				success++;
			} catch (DuplicateNameException | InvalidInputException e) {
				printerr("Failed setting parameter name in " + function.getName());
				fail++;
			}
        }
        BulkUtils.printDoneMessage(this, success, fail);
        
    }

}