import { Component, OnInit } from '@angular/core';
import { AbstractControl, FormControl, Validators } from '@angular/forms';

import { BsModalRef } from 'ngx-bootstrap/modal';

import { RbdMirroringService } from '../../../../shared/api/rbd-mirroring.service';
import { CdFormGroup } from '../../../../shared/forms/cd-form-group';
import { FinishedTask } from '../../../../shared/models/finished-task';
import { TaskWrapperService } from '../../../../shared/services/task-wrapper.service';
import { PoolEditPeerResponseModel } from './pool-edit-peer-response.model';

@Component({
  selector: 'cd-pool-edit-peer-modal',
  templateUrl: './pool-edit-peer-modal.component.html',
  styleUrls: ['./pool-edit-peer-modal.component.scss']
})
export class PoolEditPeerModalComponent implements OnInit {
  mode: string;
  poolName: string;
  peerUUID: string;

  editPeerForm: CdFormGroup;
  bsConfig = {
    containerClass: 'theme-default'
  };
  pattern: string;

  response: PoolEditPeerResponseModel;

  constructor(
    public modalRef: BsModalRef,
    private rbdMirroringService: RbdMirroringService,
    private taskWrapper: TaskWrapperService
  ) {
    this.createForm();
  }

  createForm() {
    this.editPeerForm = new CdFormGroup({
      clusterName: new FormControl('', {
        validators: [Validators.required, this.validateClusterName]
      }),
      clientID: new FormControl('', {
        validators: [Validators.required, this.validateClientID]
      }),
      monAddr: new FormControl('', {
        validators: [this.validateMonAddr]
      }),
      key: new FormControl('', {
        validators: [this.validateKey]
      })
    });
  }

  ngOnInit() {
    this.pattern = `${this.poolName}/${this.peerUUID}`;
    if (this.mode === 'edit') {
      this.rbdMirroringService
        .getPeer(this.poolName, this.peerUUID)
        .subscribe((resp: PoolEditPeerResponseModel) => {
          this.setResponse(resp);
        });
    }
  }

  validateClusterName(control: AbstractControl) {
    if (!control.value.match(/^[\w\-_]*$/)) {
      return { invalidClusterName: { value: control.value } };
    }

    return undefined;
  }

  validateClientID(control: AbstractControl) {
    if (!control.value.match(/^(?!client\.)[\w\-_.]*$/)) {
      return { invalidClientID: { value: control.value } };
    }

    return undefined;
  }

  validateMonAddr(control: AbstractControl) {
    if (!control.value.match(/^[,; ]*([\w.\-_\[\]]+(:[\d]+)?[,; ]*)*$/)) {
      return { invalidMonAddr: { value: control.value } };
    }

    return undefined;
  }

  validateKey(control: AbstractControl) {
    try {
      if (control.value === '' || !!atob(control.value)) {
        return null;
      }
    } catch (error) {}
    return { invalidKey: { value: control.value } };
  }

  setResponse(response: PoolEditPeerResponseModel) {
    this.response = response;
    this.editPeerForm.get('clusterName').setValue(response.cluster_name);
    this.editPeerForm.get('clientID').setValue(response.client_id);
    this.editPeerForm.get('monAddr').setValue(response.mon_host);
    this.editPeerForm.get('key').setValue(response.key);
  }

  update() {
    const request = new PoolEditPeerResponseModel();
    request.cluster_name = this.editPeerForm.getValue('clusterName');
    request.client_id = this.editPeerForm.getValue('clientID');
    request.mon_host = this.editPeerForm.getValue('monAddr');
    request.key = this.editPeerForm.getValue('key');

    let action;
    if (this.mode === 'edit') {
      action = this.taskWrapper.wrapTaskAroundCall({
        task: new FinishedTask('rbd/mirroring/peer/edit', {
          pool_name: this.poolName
        }),
        call: this.rbdMirroringService.updatePeer(this.poolName, this.peerUUID, request)
      });
    } else {
      action = this.taskWrapper.wrapTaskAroundCall({
        task: new FinishedTask('rbd/mirroring/peer/add', {
          pool_name: this.poolName
        }),
        call: this.rbdMirroringService.addPeer(this.poolName, request)
      });
    }

    action.subscribe(
      undefined,
      () => this.editPeerForm.setErrors({ cdSubmitButton: true }),
      () => {
        this.rbdMirroringService.refresh();
        this.modalRef.hide();
      }
    );
  }
}
