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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.camel.language.wasm;

import org.apache.camel.CamelContext;
import org.apache.camel.Expression;
import org.apache.camel.Predicate;
import org.apache.camel.spi.PropertyConfigurer;
import org.apache.camel.spi.annotations.Language;
import org.apache.camel.support.ExpressionToPredicateAdapter;
import org.apache.camel.support.TypedLanguageSupport;
import org.apache.camel.support.component.PropertyConfigurerSupport;
import org.apache.camel.wasm.Wasm;

@Language(Wasm.SCHEME)
public class WasmLanguage extends TypedLanguageSupport implements PropertyConfigurer {

    private String module;

    public WasmLanguage() {
    }

    public String getModule() {
        return module;
    }

    public void setModule(String module) {
        this.module = module;
    }

    @Override
    public boolean configure(CamelContext camelContext, Object target, String name, Object value, boolean ignoreCase) {
        if (target != this) {
            throw new IllegalStateException("Can only configure our own instance !");
        }

        switch (ignoreCase ? name.toLowerCase() : name) {
            case "module":
                setModule(PropertyConfigurerSupport.property(camelContext, String.class, value));
                return true;
            default:
                return false;
        }
    }

    @Override
    public Predicate createPredicate(String expression) {
        return ExpressionToPredicateAdapter.toPredicate(createExpression(expression));
    }

    @Override
    public Expression createExpression(String expression) {
        return createExpression(expression, null);
    }

    @Override
    public Predicate createPredicate(String expression, Object[] properties) {
        return ExpressionToPredicateAdapter.toPredicate(createExpression(expression, properties));
    }

    @Override
    public Expression createExpression(String expression, Object[] properties) {
        WasmExpression answer = new WasmExpression(expression);
        answer.setResultType(property(Class.class, properties, 0, null));
        answer.setModule(property(String.class, properties, 1, getModule()));
        if (getCamelContext() != null) {
            answer.init(getCamelContext());
        }
        return answer;
    }
}