/*-
 * ============LICENSE_START=======================================================
 * ONAP CLAMP
 * ================================================================================
 * Copyright (C) 2020 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 MaterialTable from "material-table";
import Button from 'react-bootstrap/Button';
import Modal from 'react-bootstrap/Modal';
import styled from 'styled-components';
import PolicyToscaService from '../../../api/PolicyToscaService';
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 LoopService from '../../../api/LoopService';
import Tabs from 'react-bootstrap/Tabs';
import Tab from 'react-bootstrap/Tab';
import Alert from 'react-bootstrap/Alert';

const ModalStyled = styled(Modal)`
	background-color: transparent;
`
const TextModal = styled.textarea`
	margin-top: 20px;
	white-space:pre;
	background-color: ${props => props.theme.toscaTextareaBackgroundColor};
	text-align: justify;
	font-size: ${props => props.theme.toscaTextareaFontSize};
	width: 100%;
	height: 300px;
`
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 ModifyLoopModal extends React.Component {

	state = {
		show: true,
		loopCache: this.props.loopCache,
		content: 'Please select Tosca model to view the details',
		selectedRowData: {},
		toscaPolicyModelsData: [],
		selectedPolicyModelsData: [],
		key: 'add',
		showFailAlert: false,
		toscaColumns: [
			{ title: "#", field: "index", render: rowData => rowData.tableData.id + 1,
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
			{ title: "Policy Model Type", field: "policyModelType",
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
			{ title: "Policy Acronym", field: "policyAcronym",
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
			{ title: "Policy Name", field: "policyName",
             	cellStyle: cellStyle,
                headerStyle: headerStyle
            },
			{ title: "Version", field: "version",
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
			{ title: "Uploaded By", field: "updatedBy",
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
			{ title: "Uploaded Date", field: "updatedDate", editable: 'never',
				cellStyle: cellStyle,
				headerStyle: headerStyle
			},
             { title: "Created Date", field: "createdDate", 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.initializeToscaPolicyModelsInfo = this.initializeToscaPolicyModelsInfo.bind(this);
		this.handleYamlContent = this.handleYamlContent.bind(this);
		this.getToscaPolicyModelYaml = this.getToscaPolicyModelYaml.bind(this);
		this.handleAdd = this.handleAdd.bind(this);
		this.handleRemove = this.handleRemove.bind(this);
		this.initializeToscaPolicyModelsInfo();
	}

	initializeToscaPolicyModelsInfo() {
		var operationalPolicies = this.state.loopCache.getOperationalPolicies();
		var selectedPolicyModels = [];
		for (var policy in operationalPolicies) {
		    var newRow = operationalPolicies[policy]["policyModel"];
		    newRow["policyName"] = operationalPolicies[policy].name;
			selectedPolicyModels.push(newRow);
		}

		PolicyToscaService.getToscaPolicyModels().then(allToscaModels => {
			this.setState({ toscaPolicyModelsData: allToscaModels,
							selectedPolicyModelsData: selectedPolicyModels});
		});
	}

	getToscaPolicyModelYaml(policyModelType, policyModelVersion) {
		if (typeof policyModelType !== "undefined") {
			PolicyToscaService.getToscaPolicyModelYaml(policyModelType, policyModelVersion).then(toscaYaml => {
				if (toscaYaml.length !== 0) {
					this.setState({content: toscaYaml})
				} else {
					this.setState({ content: 'No Tosca model Yaml available' })
				}
			});
		} else {
			this.setState({ content: 'Please select Tosca model to view the details' })
		}
	}

	handleYamlContent(event) {
		this.setState({ content: event.target.value });
	}

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

	renderAlert() {
		return (
			<div>
				<Alert variant="danger" show={this.state.showFailAlert} onClose={this.disableAlert} dismissible>
					{this.state.showMessage}
				</Alert>
			</div>
		);
	}

	handleAdd() {
		LoopService.addOperationalPolicyType(this.state.loopCache.getLoopName(),this.state.selectedRowData.policyModelType,this.state.selectedRowData.version)
		.then(pars => {
			this.props.loadLoopFunction(this.state.loopCache.getLoopName());
			this.handleClose();
		})
		.catch(error => {
			this.setState({ showFailAlert: true, showMessage: "Adding failed with error: " + error.message});
		});
	}

	handleRemove() {
		LoopService.removeOperationalPolicyType(this.state.loopCache.getLoopName(),this.state.selectedRowData.policyModelType,this.state.selectedRowData.version,this.state.selectedRowData.policyName);
		this.props.loadLoopFunction(this.state.loopCache.getLoopName());
		this.handleClose();
	}

	render() {
		return (
			<ModalStyled size="xl" show={this.state.show} onHide={this.handleClose} backdrop="static" keyboard={false} >
				<Modal.Header closeButton>
					<Modal.Title>Modify Loop Operational Policies</Modal.Title>
				</Modal.Header>
				<Tabs id="controlled-tab-example" activeKey={this.state.key} onSelect={key => this.setState({ key, selectedRowData: {} })}>
					<Tab eventKey="add" title="Add Operational Policies">
						<Modal.Body>
							<MaterialTable
							title={"View Tosca Policy Models"}
							data={this.state.toscaPolicyModelsData}
							columns={this.state.toscaColumns}
							icons={this.state.tableIcons}
							onRowClick={(event, rowData) => {this.getToscaPolicyModelYaml(rowData.policyModelType, rowData.version);this.setState({selectedRowData: rowData})}}
							options={{
								headerStyle: rowHeaderStyle,
								rowStyle: rowData => ({
									backgroundColor: (this.state.selectedRowData !== {} && this.state.selectedRowData.tableData !== undefined
									&& this.state.selectedRowData.tableData.id === rowData.tableData.id) ? '#EEE' : '#FFF'
									})
							}}
							/>
							<div>
								<TextModal value={this.state.content} onChange={this.handleYamlContent}/>
							</div>
						</Modal.Body>
						{this.renderAlert()}
					</Tab>
					<Tab eventKey="remove" title="Remove Operational Policies">
						<Modal.Body>
							<MaterialTable
							title={"Tosca Policy Models already added"}
							data={this.state.selectedPolicyModelsData}
							columns={this.state.toscaColumns}
							icons={this.state.tableIcons}
							onRowClick={(event, rowData) => {this.setState({selectedRowData: rowData})}}
							options={{
								headerStyle: rowHeaderStyle,
								rowStyle: rowData => ({
									backgroundColor: (this.state.selectedRowData !== {} && this.state.selectedRowData.tableData !== undefined
									&& this.state.selectedRowData.tableData.id === rowData.tableData.id) ? '#EEE' : '#FFF'
								})
							}}
							/>
						</Modal.Body>
					</Tab>
				</Tabs>
				<Modal.Footer>
					<Button variant="secondary" type="null" onClick={this.handleClose}>Cancel</Button>
					<Button variant="primary" disabled={(this.state.key === "remove")} type="submit" onClick={this.handleAdd}>Add</Button>
					<Button variant="primary" disabled={(this.state.key === "add")} type="submit" onClick={this.handleRemove}>Remove</Button>
				</Modal.Footer>

			</ModalStyled>
		);
	}
}