/*-
 * ============LICENSE_START=======================================================
 * ONAP POLICY-CLAMP
 * ================================================================================
 * Copyright (C) 2019, 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, { forwardRef } from 'react'
import Button from 'react-bootstrap/Button';
import Modal from 'react-bootstrap/Modal';
import styled from 'styled-components';
import TemplateService from '../../../api/TemplateService';
import ArrowUpward from '@material-ui/icons/ArrowUpward';
import ChevronLeft from '@material-ui/icons/ChevronLeft';
import ChevronRight from '@material-ui/icons/ChevronRight';
import Clear from '@material-ui/icons/Clear';
import FirstPage from '@material-ui/icons/FirstPage';
import LastPage from '@material-ui/icons/LastPage';
import Search from '@material-ui/icons/Search';
import MaterialTable from "material-table";
import LoopCache from '../../../api/LoopCache';
import SvgGenerator from '../../loop_viewer/svg/SvgGenerator';

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

const cellStyle = { border: '1px solid black' };
const headerStyle = { backgroundColor: '#ddd', border: '2px solid black' };
const rowHeaderStyle = { backgroundColor: '#ddd', fontSize: '15pt', text: 'bold', border: '1px solid black' };

export default class ViewLoopTemplatesModal extends React.Component {
  state = {
    show: true,
    content: 'Please select a loop template to display it',
    selectedRow: -1,
    loopTemplatesData: [],
    fakeLoopCacheWithTemplate: new LoopCache({}),
    loopTemplateColumnsDefinition: [
      {
        title: "#", field: "index", render: rowData => rowData.tableData.id + 1,
        cellStyle: cellStyle,
        headerStyle: headerStyle
      },
      {
        title: "Template Name", field: "name",
        cellStyle: cellStyle,
        headerStyle: headerStyle
      },
      {
        title: "Service Model Name", field: "modelService.serviceDetails.name",
        cellStyle: cellStyle,
        headerStyle: headerStyle
      },
      {
        title: "Loop Type Allowed", field: "allowedLoopType",
        cellStyle: cellStyle,
        headerStyle: headerStyle
      },
      {
        title: "# Instances Allowed", field: "maximumInstancesAllowed",
        cellStyle: cellStyle,
        headerStyle: headerStyle
      },
      {
        title: "Modified Date", field: "updatedDate", editable: 'never',
        cellStyle: cellStyle,
        headerStyle: headerStyle
      }
    ],
    tableIcons: {
      FirstPage: forwardRef((props, ref) => <FirstPage { ...props } ref={ ref }/>),
      LastPage: forwardRef((props, ref) => <LastPage { ...props } ref={ ref }/>),
      NextPage: forwardRef((props, ref) => <ChevronRight { ...props } ref={ ref }/>),
      PreviousPage: forwardRef((props, ref) => <ChevronLeft { ...props } ref={ ref }/>),
      ResetSearch: forwardRef((props, ref) => <Clear { ...props } ref={ ref }/>),
      Search: forwardRef((props, ref) => <Search { ...props } ref={ ref }/>),
      SortArrow: forwardRef((props, ref) => <ArrowUpward { ...props } ref={ ref }/>)
    }
  };

  constructor(props, context) {
    super(props, context);
    this.handleClose = this.handleClose.bind(this);
    this.renderSvg = this.renderSvg.bind(this);
    this.getLoopTemplate = this.getLoopTemplate.bind(this);
    this.getAllLoopTemplates();
  }

  getAllLoopTemplates() {
    TemplateService.getAllLoopTemplates().then(templatesData => {
      // replace -1 in maximumInstancesAllowed with more meaningful 'No Limit'
      for (let item in templatesData) {
        if (templatesData[item].maximumInstancesAllowed === -1) {
          templatesData[item].maximumInstancesAllowed = 'No Limit';
        }
      }
      this.setState({ loopTemplatesData: templatesData })
    });
  }

  getLoopTemplate(templateIdInDataArray) {
    if (typeof templateIdInDataArray !== "undefined") {
      this.setState({
        fakeLoopCacheWithTemplate:
          new LoopCache({
            "loopTemplate": this.state.loopTemplatesData[templateIdInDataArray],
            "name": "fakeLoop"
          })
      })
    } else {
      this.setState({ fakeLoopCacheWithTemplate: new LoopCache({}) })
    }
  }

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

  renderSvg() {
    return (
      <SvgGenerator loopCache={ this.state.fakeLoopCacheWithTemplate } clickable={ false } generatedFrom={ SvgGenerator.GENERATED_FROM_TEMPLATE }/>
    )
  }

  render() {
    return (
      <ModalStyled size="xl" show={ this.state.show } onHide={ this.handleClose } backdrop="static" keyboard={ false }>
        <Modal.Header closeButton>
        </Modal.Header>
        <Modal.Body>
          <MaterialTable
            title={ "View Blueprint MicroService Templates" }
            data={ this.state.loopTemplatesData }
            columns={ this.state.loopTemplateColumnsDefinition }
            icons={ this.state.tableIcons }
            onRowClick={ (event, rowData) => {
              this.getLoopTemplate(rowData.tableData.id);
              this.setState({ selectedRow: rowData.tableData.id })
            } }
            options={ {
              headerStyle: rowHeaderStyle,
              rowStyle: rowData => ({
                backgroundColor: (this.state.selectedRow !== -1 && this.state.selectedRow === rowData.tableData.id) ? '#EEE' : '#FFF'
              })
            } }
          />
          { this.renderSvg() }
        </Modal.Body>
        <Modal.Footer>
          <Button variant="secondary" onClick={ this.handleClose }>Close</Button>
        </Modal.Footer>
      </ModalStyled>
    );
  }
}