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path: root/runtime/ui-react/src/components/dialogs/Policy/PolicyModal.js
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/*-
 * ============LICENSE_START=======================================================
 * ONAP POLICY-CLAMP
 * ================================================================================
 * Copyright (C) 2020-2021 AT&T Intellectual Property. All rights
 *                             reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END============================================
 * ===================================================================
 *
 */

import React from 'react'
import Button from 'react-bootstrap/Button';
import Form from 'react-bootstrap/Form';
import Col from 'react-bootstrap/Col';
import Row from 'react-bootstrap/Row';
import Select from 'react-select';
import Modal from 'react-bootstrap/Modal';
import styled from 'styled-components';
import LoopService from '../../../api/LoopService';
import LoopCache from '../../../api/LoopCache';
import { JSONEditor } from '@json-editor/json-editor/dist/jsoneditor.js';
import "@fortawesome/fontawesome-free/css/all.css"
import Alert from 'react-bootstrap/Alert';
import OnapConstant from '../../../utils/OnapConstants';
import OnapUtils from '../../../utils/OnapUtils';

const ModalStyled = styled(Modal)`
  background-color: transparent;
`

const DivWhiteSpaceStyled = styled.div`
  white-space: pre;
`

export default class PolicyModal extends React.Component {

  state = {
    show: true,
    loopCache: this.props.loopCache,
    jsonEditor: null,
    policyName: this.props.match.params.policyName,
    // This is to indicate whether it's an operational or config policy (in terms of loop instance)
    policyInstanceType: this.props.match.params.policyInstanceType,
    pdpGroup: null,
    pdpGroupList: [],
    pdpSubgroupList: [],
    chosenPdpGroup: '',
    chosenPdpSubgroup: '',
    showSucAlert: false,
    showFailAlert: false
  };

  constructor(props, context) {
    super(props, context);
    this.handleClose = this.handleClose.bind(this);
    this.handleSave = this.handleSave.bind(this);
    this.renderJsonEditor = this.renderJsonEditor.bind(this);
    this.handlePdpGroupChange = this.handlePdpGroupChange.bind(this);
    this.handlePdpSubgroupChange = this.handlePdpSubgroupChange.bind(this);
    this.createJsonEditor = this.createJsonEditor.bind(this);
    this.handleRefresh = this.handleRefresh.bind(this);
    this.disableAlert = this.disableAlert.bind(this);
    this.renderPdpGroupDropDown = this.renderPdpGroupDropDown.bind(this);
    this.renderOpenLoopMessage = this.renderOpenLoopMessage.bind(this);
    this.renderModalTitle = this.renderModalTitle.bind(this);
    this.readOnly = props.readOnly !== undefined ? props.readOnly : false;
  }

  handleSave() {
    var editorData = this.state.jsonEditor.getValue();
    var errors = this.state.jsonEditor.validate();
    errors = errors.concat(this.customValidation(editorData, this.state.loopCache.getTemplateName()));

    if (errors.length !== 0) {
      console.error("Errors detected during policy data validation ", errors);
      this.setState({
        showFailAlert: true,
        showMessage: 'Errors detected during policy data validation:\n' + OnapUtils.jsonEditorErrorFormatter(errors)
      });
      return;
    } else {
      console.info("NO validation errors found in policy data");
      if (this.state.policyInstanceType === OnapConstant.microServiceType) {
        this.state.loopCache.updateMicroServiceProperties(this.state.policyName, editorData);
        this.state.loopCache.updateMicroServicePdpGroup(this.state.policyName, this.state.chosenPdpGroup, this.state.chosenPdpSubgroup);
        LoopService.setMicroServiceProperties(this.state.loopCache.getLoopName(), this.state.loopCache.getMicroServiceForName(this.state.policyName)).then(resp => {
          this.setState({ show: false });
          this.props.history.push('/');
          this.props.loadLoopFunction(this.state.loopCache.getLoopName());
        });
      } else if (this.state.policyInstanceType === OnapConstant.operationalPolicyType) {
        this.state.loopCache.updateOperationalPolicyProperties(this.state.policyName, editorData);
        this.state.loopCache.updateOperationalPolicyPdpGroup(this.state.policyName, this.state.chosenPdpGroup, this.state.chosenPdpSubgroup);
        LoopService.setOperationalPolicyProperties(this.state.loopCache.getLoopName(), this.state.loopCache.getOperationalPolicies()).then(resp => {
          this.setState({ show: false });
          this.props.history.push('/');
          this.props.loadLoopFunction(this.state.loopCache.getLoopName());
        });
      }
    }
  }

  customValidation(editorData, templateName) {
    // method for sub-classes to override with customized validation
    return [];
  }

  handleClose() {
    this.setState({ show: false });
    this.props.history.push('/');
  }

  componentDidMount() {
    this.renderJsonEditor();
  }

  componentDidUpdate() {
    if (this.state.showSucAlert === true || this.state.showFailAlert === true) {
      let modalElement = document.getElementById("policyModal")
      if (modalElement) {
        modalElement.scrollTo(0, 0);
      }
    }
  }

  createJsonEditor(toscaModel, editorData) {
    return new JSONEditor(document.getElementById("editor"),
      {
        schema: toscaModel,
        startval: editorData,
        theme: 'bootstrap4',
        iconlib: 'fontawesome5',
        object_layout: 'grid',
        disable_properties: false,
        disable_edit_json: false,
        disable_array_reorder: true,
        disable_array_delete_last_row: true,
        disable_array_delete_all_rows: false,
        array_controls_top: true,
        keep_oneof_values: false,
        collapsed: true,
        show_errors: 'always',
        display_required_only: false,
        show_opt_in: false,
        prompt_before_delete: true,
        required_by_default: false
      })
  }

  renderJsonEditor() {
    console.debug("Rendering PolicyModal ", this.state.policyName);
    var toscaModel = {};
    var editorData = {};
    var pdpGroupValues = {};
    var chosenPdpGroupValue, chosenPdpSubgroupValue;
    if (this.state.policyInstanceType === OnapConstant.microServiceType) {
      toscaModel = this.state.loopCache.getMicroServiceJsonRepresentationForName(this.state.policyName);
      editorData = this.state.loopCache.getMicroServicePropertiesForName(this.state.policyName);
      pdpGroupValues = this.state.loopCache.getMicroServiceSupportedPdpGroup(this.state.policyName);
      chosenPdpGroupValue = this.state.loopCache.getMicroServicePdpGroup(this.state.policyName);
      chosenPdpSubgroupValue = this.state.loopCache.getMicroServicePdpSubgroup(this.state.policyName);
    } else if (this.state.policyInstanceType === OnapConstant.operationalPolicyType) {
      toscaModel = this.state.loopCache.getOperationalPolicyJsonRepresentationForName(this.state.policyName);
      editorData = this.state.loopCache.getOperationalPolicyPropertiesForName(this.state.policyName);
      pdpGroupValues = this.state.loopCache.getOperationalPolicySupportedPdpGroup(this.state.policyName);
      chosenPdpGroupValue = this.state.loopCache.getOperationalPolicyPdpGroup(this.state.policyName);
      chosenPdpSubgroupValue = this.state.loopCache.getOperationalPolicyPdpSubgroup(this.state.policyName);
    }

    if (toscaModel == null) {
      return;
    }

    var pdpSubgroupValues = [];
    if (typeof (chosenPdpGroupValue) !== "undefined") {
      var selectedPdpGroup = pdpGroupValues.filter(entry => (Object.keys(entry)[0] === chosenPdpGroupValue));
      pdpSubgroupValues = selectedPdpGroup[0][chosenPdpGroupValue].map((pdpSubgroup) => {
        return { label: pdpSubgroup, value: pdpSubgroup }
      });
    }
    this.setState({
      jsonEditor: this.createJsonEditor(toscaModel, editorData),
      pdpGroup: pdpGroupValues,
      pdpGroupList: pdpGroupValues.map(entry => {
        return { label: Object.keys(entry)[0], value: Object.keys(entry)[0] };
      }),
      pdpSubgroupList: pdpSubgroupValues,
      chosenPdpGroup: chosenPdpGroupValue,
      chosenPdpSubgroup: chosenPdpSubgroupValue
    })
  }

  handlePdpGroupChange(e) {
    var selectedPdpGroup = this.state.pdpGroup.filter(entry => (Object.keys(entry)[0] === e.value));
    const pdpSubgroupValues = selectedPdpGroup[0][e.value].map((pdpSubgroup) => {
      return { label: pdpSubgroup, value: pdpSubgroup }
    });
    if (this.state.chosenPdpGroup !== e.value) {
      this.setState({
        chosenPdpGroup: e.value,
        chosenPdpSubgroup: '',
        pdpSubgroupList: pdpSubgroupValues
      });
    }
  }

  handlePdpSubgroupChange(e) {
    this.setState({ chosenPdpSubgroup: e.value });
  }

  handleRefresh() {
    var newLoopCache, toscaModel, editorData;
    if (this.state.policyInstanceType === OnapConstant.microServiceType) {
      LoopService.refreshMicroServicePolicyJson(this.state.loopCache.getLoopName(), this.state.policyName).then(data => {
        newLoopCache = new LoopCache(data);
        toscaModel = newLoopCache.getMicroServiceJsonRepresentationForName(this.state.policyName);
        editorData = newLoopCache.getMicroServicePropertiesForName(this.state.policyName);
        document.getElementById("editor").innerHTML = "";
        this.setState({
          loopCache: newLoopCache,
          jsonEditor: this.createJsonEditor(toscaModel, editorData),
          showSucAlert: true,
          showMessage: "Successfully refreshed"
        });
      })
        .catch(error => {
          console.error("Error while refreshing the Operational Policy Json Representation");
          this.setState({
            showFailAlert: true,
            showMessage: "Refreshing of UI failed"
          });
        });
    } else if (this.state.policyInstanceType === OnapConstant.operationalPolicyType) {
      LoopService.refreshOperationalPolicyJson(this.state.loopCache.getLoopName(), this.state.policyName).then(data => {
        var newLoopCache = new LoopCache(data);
        toscaModel = newLoopCache.getOperationalPolicyJsonRepresentationForName(this.state.policyName);
        editorData = newLoopCache.getOperationalPolicyPropertiesForName(this.state.policyName);
        document.getElementById("editor").innerHTML = "";
        this.setState({
          loopCache: newLoopCache,
          jsonEditor: this.createJsonEditor(toscaModel, editorData),
          showSucAlert: true,
          showMessage: "Successfully refreshed"
        });
      })
        .catch(error => {
          console.error("Error while refreshing the Operational Policy Json Representation");
          this.setState({
            showFailAlert: true,
            showMessage: "Refreshing of UI failed"
          });
        });
    }
  }

  disableAlert() {
    this.setState({ showSucAlert: false, showFailAlert: false });
  }

  renderPdpGroupDropDown() {
    if (this.state.policyInstanceType !== OnapConstant.operationalPolicyType || !this.state.loopCache.isOpenLoopTemplate()) {
      return (
        <Form.Group as={ Row } controlId="formPlaintextEmail">
          <Form.Label column sm="2">Pdp Group Info</Form.Label>
          <Col sm="3">
            <Select value={ { label: this.state.chosenPdpGroup, value: this.state.chosenPdpGroup } } onChange={ this.handlePdpGroupChange } options={ this.state.pdpGroupList }/>
          </Col>
          <Col sm="3">
            <Select value={ { label: this.state.chosenPdpSubgroup, value: this.state.chosenPdpSubgroup } } onChange={ this.handlePdpSubgroupChange } options={ this.state.pdpSubgroupList }/>
          </Col>
        </Form.Group>
      );
    }
  }

  renderOpenLoopMessage() {
    if (this.state.policyInstanceType === OnapConstant.operationalPolicyType && this.state.loopCache.isOpenLoopTemplate()) {
      return (
        "Operational Policy cannot be configured as only Open Loop is supported for this Template!"
      );
    }
  }

  renderModalTitle() {
    return (
      <Modal.Title>Edit the policy</Modal.Title>
    );
  }

  renderButton() {
    var allElement = [(<Button key="close" variant="secondary" onClick={ this.handleClose }>
      Close
    </Button>)];
    if (this.state.policyInstanceType !== OnapConstant.operationalPolicyType || !this.state.loopCache.isOpenLoopTemplate()) {
      allElement.push((
        <Button key="save" variant="primary" disabled={ this.readOnly } onClick={ this.handleSave }>
          Save Changes
        </Button>
      ));
      allElement.push((
        <Button key="refresh" variant="primary" disabled={ this.readOnly } onClick={ this.handleRefresh }>
          Refresh
        </Button>
      ));
    }
    return allElement;
  }

  render() {
    return (
      <ModalStyled size="xl" backdrop="static" keyboard={ false } show={ this.state.show } onHide={ this.handleClose }>
        <Modal.Header closeButton>
          { this.renderModalTitle() }
        </Modal.Header>
        <Alert variant="success" show={ this.state.showSucAlert } onClose={ this.disableAlert } dismissible>
          <DivWhiteSpaceStyled>
            { this.state.showMessage }
          </DivWhiteSpaceStyled>
        </Alert>
        <Alert variant="danger" show={ this.state.showFailAlert } onClose={ this.disableAlert } dismissible>
          <DivWhiteSpaceStyled>
            { this.state.showMessage }
          </DivWhiteSpaceStyled>
        </Alert>
        <Modal.Body>
          { this.renderOpenLoopMessage() }
          <div id="editor"/>
          { this.renderPdpGroupDropDown() }
        </Modal.Body>
        <Modal.Footer>
          { this.renderButton() }
        </Modal.Footer>
      </ModalStyled>
    );
  }
}