///
/// Copyright © 2016-2021 The Thingsboard Authors
///
/// 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.
///

import { Component, forwardRef, Input, OnInit } from '@angular/core';
import { ControlValueAccessor, FormBuilder, FormGroup, NG_VALUE_ACCESSOR, Validators } from '@angular/forms';
import { Store } from '@ngrx/store';
import { AppState } from '@app/core/core.state';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import {
  CoapDeviceProfileTransportConfiguration,
  coapDeviceTypeTranslationMap,
  CoapTransportDeviceType,
  defaultAttributesSchema,
  defaultRpcRequestSchema,
  defaultRpcResponseSchema,
  defaultTelemetrySchema,
  DeviceProfileTransportConfiguration,
  DeviceTransportType,
  TransportPayloadType,
  transportPayloadTypeTranslationMap,
} from '@shared/models/device.models';
import { isDefinedAndNotNull } from '@core/utils';

@Component({
  selector: 'tb-coap-device-profile-transport-configuration',
  templateUrl: './coap-device-profile-transport-configuration.component.html',
  styleUrls: ['./coap-device-profile-transport-configuration.component.scss'],
  providers: [{
    provide: NG_VALUE_ACCESSOR,
    useExisting: forwardRef(() => CoapDeviceProfileTransportConfigurationComponent),
    multi: true
  }]
})
export class CoapDeviceProfileTransportConfigurationComponent implements ControlValueAccessor, OnInit {

  coapTransportDeviceTypes = Object.keys(CoapTransportDeviceType);

  coapTransportDeviceTypeTranslations = coapDeviceTypeTranslationMap;

  transportPayloadTypes = Object.keys(TransportPayloadType);

  transportPayloadTypeTranslations = transportPayloadTypeTranslationMap;

  coapDeviceProfileTransportConfigurationFormGroup: FormGroup;

  private requiredValue: boolean;

  private transportPayloadTypeConfiguration = this.fb.group({
    transportPayloadType: [TransportPayloadType.JSON, Validators.required],
    deviceTelemetryProtoSchema: [defaultTelemetrySchema, Validators.required],
    deviceAttributesProtoSchema: [defaultAttributesSchema, Validators.required],
    deviceRpcRequestProtoSchema: [defaultRpcRequestSchema, Validators.required],
    deviceRpcResponseProtoSchema: [defaultRpcResponseSchema, Validators.required]
  });

  get required(): boolean {
    return this.requiredValue;
  }

  @Input()
  set required(value: boolean) {
    this.requiredValue = coerceBooleanProperty(value);
  }

  @Input()
  disabled: boolean;

  private propagateChange = (v: any) => { };

  constructor(private store: Store<AppState>,
              private fb: FormBuilder) {
  }

  registerOnChange(fn: any): void {
    this.propagateChange = fn;
  }

  registerOnTouched(fn: any): void {
  }

  ngOnInit() {
    this.coapDeviceProfileTransportConfigurationFormGroup = this.fb.group({
      coapDeviceTypeConfiguration: this.fb.group({
          coapDeviceType: [CoapTransportDeviceType.DEFAULT, Validators.required],
          transportPayloadTypeConfiguration: this.transportPayloadTypeConfiguration
        })
      }
    );
    this.coapDeviceProfileTransportConfigurationFormGroup.get('coapDeviceTypeConfiguration.coapDeviceType')
      .valueChanges.subscribe(coapDeviceType => {
      this.updateCoapDeviceTypeBasedControls(coapDeviceType, true);
    });
    this.coapDeviceProfileTransportConfigurationFormGroup.valueChanges.subscribe(() => {
      this.updateModel();
    });
  }

  get coapDeviceTypeDefault(): boolean {
    const coapDeviceType = this.coapDeviceProfileTransportConfigurationFormGroup.get('coapDeviceTypeConfiguration.coapDeviceType').value;
    return coapDeviceType === CoapTransportDeviceType.DEFAULT;
  }

  get protoPayloadType(): boolean {
    const transportPayloadTypePath = 'coapDeviceTypeConfiguration.transportPayloadTypeConfiguration.transportPayloadType';
    const transportPayloadType = this.coapDeviceProfileTransportConfigurationFormGroup.get(transportPayloadTypePath).value;
    return transportPayloadType === TransportPayloadType.PROTOBUF;
  }


  private updateCoapDeviceTypeBasedControls(type: CoapTransportDeviceType, forceUpdated = false) {
    const coapDeviceTypeConfigurationFormGroup = this.coapDeviceProfileTransportConfigurationFormGroup
      .get('coapDeviceTypeConfiguration') as FormGroup;
    if (forceUpdated) {
      coapDeviceTypeConfigurationFormGroup.patchValue({
        transportPayloadTypeConfiguration: this.transportPayloadTypeConfiguration
      }, {emitEvent: false});
    }
    if (type === CoapTransportDeviceType.DEFAULT && !this.disabled) {
      coapDeviceTypeConfigurationFormGroup.get('transportPayloadTypeConfiguration').enable({emitEvent: false});
    } else {
      coapDeviceTypeConfigurationFormGroup.get('transportPayloadTypeConfiguration').disable({emitEvent: false});
    }
  }

  setDisabledState(isDisabled: boolean): void {
    this.disabled = isDisabled;
    if (this.disabled) {
      this.coapDeviceProfileTransportConfigurationFormGroup.disable({emitEvent: false});
    } else {
      this.coapDeviceProfileTransportConfigurationFormGroup.enable({emitEvent: false});
    }
  }

  writeValue(value: CoapDeviceProfileTransportConfiguration | null): void {
    if (isDefinedAndNotNull(value)) {
      this.coapDeviceProfileTransportConfigurationFormGroup.patchValue(value, {emitEvent: false});
      this.updateCoapDeviceTypeBasedControls(value.coapDeviceTypeConfiguration?.coapDeviceType);
    }
  }

  private updateModel() {
    let configuration: DeviceProfileTransportConfiguration = null;
    if (this.coapDeviceProfileTransportConfigurationFormGroup.valid) {
      configuration = this.coapDeviceProfileTransportConfigurationFormGroup.value;
      configuration.type = DeviceTransportType.COAP;
    }
    this.propagateChange(configuration);
  }

}