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package org.etlunit.maven.util;

import org.etlunit.json.validator.JsonSchemaObjectNode;

import java.util.List;

public class JavaProperty
{
	private final String name;
	private final JsonSchemaObjectNode.valid_type dataType;

	private final List enumValues;

	private final String dataTypeName;
	private final boolean required;

	public JavaProperty(String name, JsonSchemaObjectNode.valid_type type, List enumValues, boolean required)
	{
		this.name = name;
		this.required = required;
		dataType = type;

		this.enumValues = enumValues;

		if (enumValues == null)
		{
			switch (type)
			{
				case t_string:
					dataTypeName = "String";
					break;
				case t_number:
					dataTypeName = "String";
					break;
				case t_integer:
					dataTypeName = "int";
					break;
				case t_boolean:
					dataTypeName = "boolean";
					break;
				case t_object:
					dataTypeName = "Map";
					break;
				case t_array:
					dataTypeName = "List";
					break;
				case t_any:
					dataTypeName = "Object";
					break;
				case t_null:
					throw new IllegalArgumentException("Data type null not supported");
				default:
					throw new IllegalArgumentException("Data type not supported");
			}
		}
		else
		{
			this.dataTypeName = null;
		}
	}

	public void append(StringBuffer buffer)
	{
		String typeName = dataTypeName;

		if (typeName == null)
		{
			// this is an enum
			typeName = getPropertyName() + "_enum";

			buffer.append("\tpublic enum ").append(typeName).append("\n\t{\n");

			for (int i = 0; i < enumValues.size(); i++)
			{
				String e = enumValues.get(i);

				buffer.append("\t\t").append(makePropertyName(e));

				if (i != (enumValues.size() - 1))
				{
					buffer.append(",");
				}

				buffer.append("\n");
			}

			buffer.append("\t}\n");
		}

		buffer.append("\tpublic static final String ").append(getProperPropertyName().toUpperCase()).append("_JSON_NAME = \"").append(name).append("\";\n");
		buffer.append("\tprivate ").append(typeName).append(" ").append(getPropertyName()).append(";\n");

		if (!required)
		{
/*
			buffer.append("\tpublic boolean has" + getProperPropertyName()).append("()\n");
			buffer.append("\t{\n");
			buffer.append("\t\treturn ").append(getPropertyName()).append(" != null;\n");
			buffer.append("\t}\n");
			 */
		}

		buffer.append("\tpublic " + typeName + " get" + getProperPropertyName()).append("()\n");
		buffer.append("\t{\n");

/*
		if (required)
		{
			buffer.append("\t\tif (!has").append(getProperPropertyName()).append(") {throw new IllegalStateException(\"Property '" + getPropertyName() + "' never assigned\");}\n\n");
		}
		 */

		buffer.append("\t\treturn " + getPropertyName() + ";\n");
		buffer.append("\t}\n");
	}

	public String getProperPropertyName()
	{
		return makeProperPropertyName(name);
	}

	public static String makeProperPropertyName(String property)
	{
		String base = makePropertyName(property);

		base = Character.toUpperCase(base.charAt(0)) + base.substring(1);

		return base;
	}

	public String getPropertyName()
	{
		return makePropertyName(name);
	}

	public static String makePropertyName(String property)
	{
		StringBuffer buffer = new StringBuffer();

		char[] array = property.toCharArray();

		boolean capNext = false;

		for (char ch : array)
		{
			if (ch == '-' || ch == '_' || ch == '.')
			{
				capNext = true;
			}
			else
			{
				if (capNext)
				{
					buffer.append(Character.toUpperCase(ch));
					capNext = false;
				}
				else
				{
					buffer.append(ch);
				}
			}
		}

		return buffer.toString();
	}
}