package refactoring.struts;

import org.apache.struts.config.FormBeanConfig;
import org.apache.struts.config.FormPropertyConfig;

public class FormBeanCreator {

    private static final String FENIX_ACTION_FORM_PACKAGE = "net.sourceforge.fenixedu.presentationTier.formbeans";
    private static final String FORM_BEANS_BASE_PACKAGE = FENIX_ACTION_FORM_PACKAGE;
    private static final String DEFAULT_MODULE_NAME = "default";

    public static void createFormBean(FormBeanConfig formBeanConfig, String modulePrefix) {
	StringBuilder sourceCode = new StringBuilder();
	FormPropertyConfig[] propertyConfigs = formBeanConfig.findFormPropertyConfigs();

	sourceCode.append(getPackageName(modulePrefix));
	sourceCode.append("\n");

	sourceCode.append(getImportFenixForm());
	sourceCode.append("\n");

	sourceCode.append(getClassSignature(formBeanConfig));
	sourceCode.append("\n");

	for (FormPropertyConfig propertyConfig : propertyConfigs) {
	    sourceCode.append(getFieldDeclarationInitialized(propertyConfig));
	}

	sourceCode.append("\n");

	for (FormPropertyConfig propertyConfig : propertyConfigs) {
	    sourceCode.append(getFieldGetter(propertyConfig));
	    sourceCode.append("\n");

	    sourceCode.append(getFieldSetter(propertyConfig));
	    sourceCode.append("\n");
	}

	sourceCode.append("\n" + "}");

	// System.out.println(sourceCode + "\n");
    }

    private static String getFormClassName(FormBeanConfig formBeanConfig) {
	String formName = formBeanConfig.getName();
	return ("" + formName.charAt(0)).toUpperCase() + formName.substring(1);
    }

    private static String getFieldName(FormPropertyConfig formPropertyConfig) {
	String fieldName = formPropertyConfig.getName();
	return ("" + fieldName.charAt(0)).toUpperCase() + fieldName.substring(1);
    }

    private static String getModuleNameForPackage(String modulePrefix) {
	String result = modulePrefix.substring(1);
	result.replace('/', '.');
	return result;
    }

    private static String getPackageName(String moduleName) {
	String moduleNameForPackage = (moduleName.isEmpty() ? DEFAULT_MODULE_NAME : getModuleNameForPackage(moduleName));
	return "package " + FORM_BEANS_BASE_PACKAGE + "." + moduleNameForPackage + ";" + "\n";
    }

    private static String getImportFenixForm() {
	return "import " + FENIX_ACTION_FORM_PACKAGE + ";" + "\n";
    }

    private static String getClassSignature(FormBeanConfig formBeanConfig) {
	return "public class " + getFormClassName(formBeanConfig) + "\n" + "{";
    }

    private static String getFieldDeclarationInitialized(FormPropertyConfig propertyConfig) {
	StringBuilder fieldDeclaration = new StringBuilder();

	fieldDeclaration.append("private ");
	fieldDeclaration.append(propertyConfig.getType() + " ");
	fieldDeclaration.append(propertyConfig.getName());

	if (propertyConfig.getInitial() != null && !propertyConfig.getInitial().isEmpty()) {
	    String typeName = propertyConfig.getType();

	    if (typeName.equals("boolean") || typeName.equals("java.lang.Boolean") || typeName.equals("byte")
		    || typeName.equals("double") || typeName.equals("float") || typeName.equals("int")
		    || typeName.equals("long") || typeName.equals("short")) {

		fieldDeclaration.append(" = " + propertyConfig.getInitial());
	    }
	    else {
		if (typeName.equals("java.lang.String")) {
		    fieldDeclaration.append(" = " + "\"" + propertyConfig.getInitial() + "\"");
		}
		else {
		    if (typeName.equals("char") || typeName.equals("java.lang.Character")) {
			fieldDeclaration.append(" = " + "\'" + propertyConfig.getInitial() + "\'");
		    }
		    else{
			fieldDeclaration.append(" = new " + typeName + "(" + propertyConfig.getInitial() + ")");
		    }

		}
	    }
	}

	fieldDeclaration.append(";" + "\n");
	return fieldDeclaration.toString();
    }

    private static String getFieldGetter(FormPropertyConfig propertyConfig) {
	StringBuilder getterMethod = new StringBuilder();
	if (propertyConfig.getType().equals("boolean")) {
	    getterMethod.append("public " + propertyConfig.getType() + " is" + getFieldName(propertyConfig) + "() " + "{" + "\n");
	} else {
	    getterMethod
		    .append("public " + propertyConfig.getType() + " get" + getFieldName(propertyConfig) + "() " + "{" + "\n");
	}
	getterMethod.append("return this." + propertyConfig.getName() + ";");
	getterMethod.append("\n");
	getterMethod.append("}");
	getterMethod.append("\n");
	return getterMethod.toString();
    }

    private static String getFieldSetter(FormPropertyConfig propertyConfig) {
	StringBuilder setterMethod = new StringBuilder();
	setterMethod.append("public void set" + getFieldName(propertyConfig) + "(" + propertyConfig.getType() + " arg)" + "{"
		+ "\n");
	setterMethod.append("this." + propertyConfig.getName() + " = arg;" + "\n");
	setterMethod.append("}");
	setterMethod.append("\n");
	return setterMethod.toString();
    }
}