/**
 * 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.
 */
import {Component, Input, OnChanges, SimpleChanges} from '@angular/core';
import {Catalog} from '../../../services/catalog/domain/catalog.model';
import {Value} from '../../../services/catalog/domain/value.model';
import {Field, FieldDataType} from '../../../services/catalog/domain/field.model';
import {Option} from '../../../services/catalog/domain/option.model';

interface CustomCatalog {
  label: string;
  fields: CustomDetailField[];
}

interface CustomDetailField {
  label: string;
  value: string;
  dataType: FieldDataType;
}

@Component({
  selector: 'fims-customer-custom-values',
  templateUrl: './value.component.html'
})
export class CustomerCustomValuesComponent implements OnChanges {

  @Input() catalog: Catalog;

  @Input() values: Value[];

  customCatalog: CustomCatalog;

  ngOnChanges(changes: SimpleChanges): void {
    this.customCatalog = this.buildCustomCatalogs(this.values, this.catalog);
  }

  private buildCustomCatalogs(values: Value[], catalog: Catalog): CustomCatalog {
    if (!values || !catalog || !catalog.fields) {
      return;
    }

    const customCatalog: CustomCatalog = {
      label: catalog.name,
      fields: []
    };

    if (values) {
      for (const value of values) {
        const foundField: Field = catalog.fields.find((field: Field) => field.identifier === value.fieldIdentifier );

        let valueString: string = value.value;

        switch (foundField.dataType) {
          case 'SINGLE_SELECTION': {
            const foundOption = foundField.options.find((option: Option) => option.value === Number(valueString));
            valueString = foundOption.label;
            break;
          }

          case 'MULTI_SELECTION': {
            const optionValues = valueString ? valueString.split(',').map(optionValue => Number(optionValue)) : [];
            const foundOptions = foundField.options
              .filter((option: Option) => optionValues.indexOf(option.value) > -1)
              .map((option: Option) => option.label);
            valueString = foundOptions.join(', ');
            break;
          }

          default: {
            break;
          }
        }

        const customField: CustomDetailField = {
          label: foundField.label,
          value: valueString,
          dataType: foundField.dataType
        };

        customCatalog.fields.push(customField);
      }
    }

    return customCatalog;
  };
}