/*
    * 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 org.basepom.mojo.propertyhelper.definitions;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  import org.basepom.mojo.propertyhelper.FieldContext;
  import org.basepom.mojo.propertyhelper.IgnoreWarnFail;
  import org.basepom.mojo.propertyhelper.ValueCache;
  import org.basepom.mojo.propertyhelper.ValueProvider;
  import org.basepom.mojo.propertyhelper.fields.StringField;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.Objects;
  import java.util.StringJoiner;
  
  import com.google.common.annotations.VisibleForTesting;
  import com.google.common.collect.ImmutableList;
  
  /**
   * Defines a string field. This is a config element that is populated by maven.
   */
  public class StringDefinition extends FieldDefinition<String> {
  
      private List<String> values = ImmutableList.of();
  
  
      /**
       * called by maven
       */
      public void setValues(final List<String> values) {
          checkNotNull(values, "values is null");
          this.values = values.stream().map(v -> Objects.requireNonNullElse(v, "")).collect(ImmutableList.toImmutableList());
      }
  
  
      /**
       * Whether a blank string is a valid value. Field injected by Maven.
       */
      boolean blankIsValid = true;
  
      /**
       * Default action on missing value.
       */
      private IgnoreWarnFail onMissingValue = IgnoreWarnFail.FAIL;
  
      /**
       * called by maven
       */
      public void setOnMissingValue(String onMissingValue) {
          this.onMissingValue = IgnoreWarnFail.forString(onMissingValue);
      }
  
      /**
       * called by maven
       */
      public StringDefinition() {
      }
  
      @VisibleForTesting
      StringDefinition(String id) {
          super(id);
      }
  
      public List<String> getValues() {
          return values;
      }
  
      public boolean isBlankIsValid() {
          return blankIsValid;
      }
  
      public IgnoreWarnFail getOnMissingValue() {
          return onMissingValue;
      }
  
      @Override
      public StringField createField(FieldContext context, ValueCache valueCache) throws IOException {
          checkNotNull(context, "context is null");
          checkNotNull(valueCache, "valueCache is null");
  
          check();
  
          final ValueProvider stringValue = valueCache.getValueProvider(this);
          return new StringField(this, stringValue, context);
      }
 
     @Override
     public String toString() {
         return new StringJoiner(", ", StringDefinition.class.getSimpleName() + "[", "]")
             .add("values=" + values)
             .add("blankIsValid=" + blankIsValid)
             .add("onMissingValue=" + onMissingValue)
             .add(super.toString())
             .toString();
     }
 
     @Override
     public boolean equals(Object o) {
         if (this == o) {
             return true;
         }
         if (o == null || getClass() != o.getClass()) {
             return false;
         }
         if (!super.equals(o)) {
             return false;
         }
         StringDefinition that = (StringDefinition) o;
         return blankIsValid == that.blankIsValid && Objects.equals(values, that.values) && onMissingValue == that.onMissingValue;
     }
 
     @Override
     public int hashCode() {
         return Objects.hash(super.hashCode(), values, blankIsValid, onMissingValue);
     }
 }