/*-
 * ============LICENSE_START=======================================================
 * ONAP CLAMP
 * ================================================================================
 * Copyright (C) 2019 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 Select from 'react-select';
import Button from 'react-bootstrap/Button';
import Modal from 'react-bootstrap/Modal';
import Form from 'react-bootstrap/Form';
import Row from 'react-bootstrap/Row';
import Col from 'react-bootstrap/Col';
import FormCheck from 'react-bootstrap/FormCheck'
import styled from 'styled-components';
import LoopService from '../../../api/LoopService';
import SvgGenerator from '../../loop_viewer/svg/SvgGenerator';
import LoopCache from '../../../api/LoopCache';

const ModalStyled = styled(Modal)`
  background-color: transparent;
`
const CheckBoxStyled = styled(FormCheck.Input)`
  margin-left: 3rem;
`

export default class OpenLoopModal extends React.Component {
  constructor(props, context) {
    super(props, context);

    this.getLoopNames = this.getLoopNames.bind(this);
    this.handleOpen = this.handleOpen.bind(this);
    this.handleClose = this.handleClose.bind(this);
    this.handleDropDownListChange = this.handleDropDownListChange.bind(this);
    this.renderSvg = this.renderSvg.bind(this);
    this.showReadOnly = props.showReadOnly !== undefined ? props.showReadOnly : true;
    this.state = {
      show: true,
      chosenLoopName: '',
      loopNames: [],
      loopCacheOpened: new LoopCache({})
    };
  }

  componentWillMount() {
    this.getLoopNames();
  }

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

  handleDropDownListChange(e) {
    LoopService.getLoop(e.value).then(loop => {
      this.setState({
        chosenLoopName: e.value,
        loopCacheOpened: new LoopCache(loop)
      });
    });
  }

  getLoopNames() {
    LoopService.getLoopNames().then(loopNames => {
      if (Object.entries(loopNames).length !== 0) {
        const loopOptions = loopNames.filter(loopName => loopName !== 'undefined').map((loopName) => {
          return { label: loopName, value: loopName }
        });
        this.setState({ loopNames: loopOptions })
      }
    });
  }

  handleOpen() {
    console.info("Loop " + this.state.chosenLoopName + " is chosen");
    this.handleClose();
    this.props.loadLoopFunction(this.state.chosenLoopName);
  }

  renderSvg() {
    return (
      <SvgGenerator loopCache={ this.state.loopCacheOpened } clickable={ false } generatedFrom={ SvgGenerator.GENERATED_FROM_INSTANCE }/>
    );
  }

  render() {
    return (
      <ModalStyled size="xl" show={ this.state.show } onHide={ this.handleClose } backdrop="static" keyboard={ false }>
        <Modal.Header closeButton>
          <Modal.Title>Open Model</Modal.Title>
        </Modal.Header>
        <Modal.Body>
          <Form.Group as={ Row } controlId="formPlaintextEmail">
            <Form.Label column sm="2">Model Name:</Form.Label>
            <Col sm="10">
              <Select onChange={ this.handleDropDownListChange }
                      options={ this.state.loopNames }/>
            </Col>
          </Form.Group>
          <Form.Group as={ Row } style={ { alignItems: 'center' } } controlId="formSvgPreview">
            <Form.Label column sm="2">Model Preview:</Form.Label>
            <Col sm="10">
              { this.renderSvg() }
            </Col>
          </Form.Group>
          { this.showReadOnly === true ?
            <Form.Group as={ Row } controlId="formBasicCheckbox">
              <Form.Check>
                <FormCheck.Label>Read Only Mode:</FormCheck.Label>
                <CheckBoxStyled style={ { marginLeft: '3.5em' } } type="checkbox"/>
              </Form.Check>
            </Form.Group>
            : null }
        </Modal.Body>
        <Modal.Footer>
          <Button variant="secondary" type="null" onClick={ this.handleClose }>Cancel</Button>
          <Button variant="primary" type="submit" onClick={ this.handleOpen }>Open</Button>
        </Modal.Footer>
      </ModalStyled>

    );
  }
}