/*
 * 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, EventEmitter, Input, OnInit, Output } from '@angular/core';
import { EventSchema, GuessTypeInfo } from '@streampipes/platform-services';

@Component({
  selector: 'sp-event-schema-preview',
  templateUrl: './event-schema-preview.component.html',
  styleUrls: ['./event-schema-preview.component.scss']
})
export class EventSchemaPreviewComponent implements OnInit {

  @Input() originalEventSchema: EventSchema;
  @Input() desiredEventSchema: EventSchema;

  @Input() originalPreview: Record<string, GuessTypeInfo>;
  @Input() desiredPreview: Record<string, GuessTypeInfo>;

  @Output() updatePreviewEmitter = new EventEmitter();

  originalField: Record<string, any>;
  desiredField: Record<string, any>;

  ngOnInit(): void {
    this.originalField = this.toSimpleMap(this.originalPreview);
    this.desiredField = this.toSimpleMap(this.desiredPreview);
  }

  toSimpleMap(event: Record<string, GuessTypeInfo>): Record<string, any> {
    let result: Record<string, any> = {};

    for (const key in event) {
      result[key] = event[key].value;
    }

   result = Object.keys(result).sort().reduce(
      (obj, key) => {
        obj[key] = result[key];
        return obj;
      },
      {}
    );

    return result;
  }

  public updateEventPreview() {
    this.updatePreviewEmitter.emit();
  }
}
