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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.way.flat;

import br.com.objectos.way.code.TypeInfo;
import br.com.objectos.way.flat.Fixed;
import br.com.objectos.way.pojo.plugin.PojoInfo;
import br.com.objectos.way.pojo.plugin.Property;

import com.squareup.javapoet.MethodSpec;

/**
 * @author [email protected] (Marcio Endo)
 */
class PrefixInfo {

  private final PrefixType type;
  private final int length;
  private final String value;

  PrefixInfo(PrefixType type, int length, String value) {
    this.type = type;
    this.length = length;
    this.value = value;
  }

  public static PrefixInfo of(TypeInfo typeInfo) {
    return PojoInfo.of(typeInfo)
        .propertyStream()
        .findFirst()
        .map(p -> of0(p))
        .orElseThrow(IllegalArgumentException::new);
  }

  private static PrefixInfo of0(Property property) {
    return property.annotationInfo(Fixed.class)
        .map(ann -> PrefixType.STRING.prefixInfo(ann))
        .orElseThrow(IllegalArgumentException::new);
  }

  public void visitLineMethodSwitch(MethodSpec.Builder method) {
    type.peek(method, length);
    method.beginControlFlow("switch (prefix)");
  }

  public void visitLineMethodCase(MethodSpec.Builder method) {
    method.addCode(type.caseFormat(), value);
  }

}