/*-
 * ============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 styled from 'styled-components';
import MenuBar from './components/menu/MenuBar';
import Navbar from 'react-bootstrap/Navbar';
import logo from './logo.png';
import { GlobalClampStyle } from './theme/globalStyle.js';
import OnapConstants from './utils/OnapConstants';

import SvgGenerator from './components/loop_viewer/svg/SvgGenerator';
import LoopLogs from './components/loop_viewer/logs/LoopLogs';
import LoopStatus from './components/loop_viewer/status/LoopStatus';
import UserService from './api/UserService';
import LoopCache from './api/LoopCache';
import LoopActionService from './api/LoopActionService';

import { Route } from 'react-router-dom'
import CreateLoopModal from './components/dialogs/Loop/CreateLoopModal';
import OpenLoopModal from './components/dialogs/Loop/OpenLoopModal';
import ModifyLoopModal from './components/dialogs/Loop/ModifyLoopModal';
import PolicyModal from './components/dialogs/Policy/PolicyModal';
import LoopPropertiesModal from './components/dialogs/Loop/LoopPropertiesModal';
import UserInfoModal from './components/dialogs/UserInfoModal';
import LoopService from './api/LoopService';
import UploadToscaPolicyModal from './components/dialogs/Tosca/UploadToscaPolicyModal';
import ViewToscaPolicyModal from './components/dialogs/Tosca/ViewToscaPolicyModal';
import ViewLoopTemplatesModal from './components/dialogs/Tosca/ViewLoopTemplatesModal';
import ManageDictionaries from './components/dialogs/ManageDictionaries/ManageDictionaries';
import PerformAction from './components/dialogs/PerformActions';
import RefreshStatus from './components/dialogs/RefreshStatus';
import DeployLoopModal from './components/dialogs/Loop/DeployLoopModal';
import Alert from 'react-bootstrap/Alert';
import Spinner from 'react-bootstrap/Spinner';

import { Link } from 'react-router-dom';

const StyledMainDiv = styled.div`
	background-color: ${props => props.theme.backgroundColor};
`

const StyledSpinnerDiv = styled.div`
	justify-content: center !important;
	display: flex !important;
`;

const ProjectNameStyled = styled.a`
	vertical-align: middle;
	padding-left: 30px;
	font-size: 36px;
	font-weight: bold;
`

const StyledRouterLink = styled(Link)`
	color: ${props => props.theme.menuFontColor};
	background-color: ${props => props.theme.backgroundColor};
`

const StyledLoginInfo = styled.a`
	color: ${props => props.theme.menuFontColor};
	background-color: ${props => props.theme.backgroundColor};
`

const LoopViewDivStyled = styled.div`
	height: 100%;
	overflow: hidden;
	margin-left: 10px;
	margin-right: 10px;
	margin-bottom: 10px;
	color: ${props => props.theme.loopViewerFontColor};
	background-color: ${props => props.theme.loopViewerBackgroundColor};
	border: 1px solid transparent;
	border-color: ${props => props.theme.loopViewerHeaderBackgroundColor};
`

const LoopViewHeaderDivStyled = styled.div`
	background-color: ${props => props.theme.loopViewerHeaderBackgroundColor};
	padding: 10px 10px;
	color: ${props => props.theme.loopViewerHeaderFontColor};
`

const LoopViewBodyDivStyled = styled.div`
	background-color: ${props => (props.theme.loopViewerBackgroundColor)};
	padding: 10px 10px;
	color: ${props => (props.theme.loopViewerHeaderFontColor)};
	height: 95%;
`

export default class LoopUI extends React.Component {

	state = {
		userName: null,
		loopName: OnapConstants.defaultLoopName,
		loopCache: new LoopCache({}),
		showSucAlert: false,
		showFailAlert: false,
		busyLoadingCount: 0
	};

	constructor() {
		super();
		this.getUser = this.getUser.bind(this);
		this.updateLoopCache = this.updateLoopCache.bind(this);
		this.loadLoop = this.loadLoop.bind(this);
		this.closeLoop = this.closeLoop.bind(this);
		this.showSucAlert =  this.showSucAlert.bind(this);
		this.showFailAlert =  this.showFailAlert.bind(this);
		this.disableAlert =  this.disableAlert.bind(this);
		this.setBusyLoading = this.setBusyLoading.bind(this);
		this.clearBusyLoading = this.clearBusyLoading.bind(this);
		this.isBusyLoading = this.isBusyLoading.bind(this);
		this.renderGlobalStyle = this.renderGlobalStyle.bind(this);
		this.renderSvg = this.renderSvg.bind(this);
	}

	componentWillMount() {
		this.getUser();
	}

	getUser() {
		UserService.login().then(user => {
			this.setState({ userName: user })
		});
	}

	renderMenuNavBar() {
		return (
			<MenuBar loopName={this.state.loopName}/>
		);
	}

	renderUserLoggedNavBar() {
		return (
			<Navbar.Text>
			<StyledLoginInfo>Signed in as: </StyledLoginInfo>
				<StyledRouterLink to="/userInfo">{this.state.userName}</StyledRouterLink>
			</Navbar.Text>
		);
	}

	renderLogoNavBar() {
		return (
			<Navbar.Brand>
				<img height="50px" width="234px" src={logo} alt="" />
				<ProjectNameStyled>CLAMP</ProjectNameStyled>
			</Navbar.Brand>
		);
	}

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

	renderNavBar() {
		return (
			<Navbar >
				{this.renderLogoNavBar()}
				<Navbar.Toggle aria-controls="responsive-navbar-nav" />
				{this.renderMenuNavBar()}
				{this.renderUserLoggedNavBar()}
			</Navbar>
		);
	}

	renderLoopViewHeader() {
		return (
			<LoopViewHeaderDivStyled>
				Loop Viewer - {this.state.loopName} - ({this.state.loopCache.getTemplateName()})
			</LoopViewHeaderDivStyled>
		);
	}

	renderSvg() {
		return (
			<SvgGenerator loopCache={this.state.loopCache} clickable={true} generatedFrom={SvgGenerator.GENERATED_FROM_INSTANCE} isBusyLoading={this.isBusyLoading}/>
		)
	}
	renderLoopViewBody() {
		return (
			<LoopViewBodyDivStyled>
				{this.renderSvg()}
				<LoopStatus loopCache={this.state.loopCache}/>
				<LoopLogs loopCache={this.state.loopCache} />
			</LoopViewBodyDivStyled>
		);
	}

	getLoopCache() {
		return this.state.loopCache;

	}

	renderLoopViewer() {
		return (
			<LoopViewDivStyled>
				{this.renderLoopViewHeader()}
				{this.renderLoopViewBody()}
			</LoopViewDivStyled>
		);
	}

	updateLoopCache(loopJson) {

		// If call with an empty object for loopJson, this is a reset to empty
		// from someplace like PerformActions for the case where we are "deleting"
		// a Control Loop model. Set the loopName to the default.

		if (loopJson === null) {
			this.setState({ loopName: OnapConstants.defaultLoopName });
			this.setState({ loopCache: new LoopCache({}) });
		} else {
			this.setState({ loopCache: new LoopCache(loopJson) });
			this.setState({ loopName: this.state.loopCache.getLoopName() });
		}
		console.info(this.state.loopName+" loop loaded successfully");
        }

	showSucAlert(message) {
		this.setState ({ showSucAlert: true, showMessage:message });
	}

	showFailAlert(message) {
		this.setState ({ showFailAlert: true, showMessage:message });
	}

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

	loadLoop(loopName) {
		this.setBusyLoading();
		LoopService.getLoop(loopName).then(loop => {
			console.debug("Updating loopCache");
			LoopActionService.refreshStatus(loopName).then(data => {
				this.updateLoopCache(data);
				this.clearBusyLoading();
				this.props.history.push('/');
			})
			.catch(error => {
				this.updateLoopCache(loop);
				this.clearBusyLoading();
				this.props.history.push('/');
			});
		});
	}

	setBusyLoading() {
		this.setState((state,props) => ({ busyLoadingCount: ++state.busyLoadingCount }));
	}

	clearBusyLoading() {
		this.setState((state,props) => ({ busyLoadingCount: --state.busyLoadingCount }));
	}

	isBusyLoading() {
		if (this.state.busyLoadingCount === 0) {
			return false;
		} else {
			return true;
		}
	}

	closeLoop() {
		this.setState({ loopCache: new LoopCache({}), loopName: OnapConstants.defaultLoopName });
		this.props.history.push('/');
	}

	renderRoutes() {
		return(
			<React.Fragment>
				<Route path="/uploadToscaPolicyModal" render={(routeProps) => (<UploadToscaPolicyModal {...routeProps} />)} />
				<Route path="/viewToscaPolicyModal" render={(routeProps) => (<ViewToscaPolicyModal {...routeProps} />)} />
				<Route path="/ViewLoopTemplatesModal" render={(routeProps) => (<ViewLoopTemplatesModal {...routeProps} />)} />
				<Route path="/ManageDictionaries" render={(routeProps) => (<ManageDictionaries {...routeProps} />)} />

				<Route path="/policyModal/:policyInstanceType/:policyName" render={(routeProps) => (<PolicyModal {...routeProps}
					loopCache={this.getLoopCache()}
					loadLoopFunction={this.loadLoop}/>)}
				/>
				<Route path="/createLoop" render={(routeProps) => (<CreateLoopModal {...routeProps}
					loadLoopFunction={this.loadLoop} />)}
				/>
				<Route path="/openLoop" render={(routeProps) => (<OpenLoopModal {...routeProps}
					loadLoopFunction={this.loadLoop} />)}
				/>
				<Route path="/loopProperties" render={(routeProps) => (<LoopPropertiesModal {...routeProps}
					loopCache={this.getLoopCache()}
					loadLoopFunction={this.loadLoop}/>)}
				/>
				<Route path="/modifyLoop" render={(routeProps) => (<ModifyLoopModal {...routeProps}
					loopCache={this.getLoopCache()}
					loadLoopFunction={this.loadLoop}/>)}
				/>

				<Route path="/userInfo" render={(routeProps) => (<UserInfoModal {...routeProps} />)} />
				<Route path="/closeLoop" render={this.closeLoop} />

				<Route path="/submit" render={(routeProps) => (<PerformAction {...routeProps}
					loopAction="submit"
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}
					setBusyLoading={this.setBusyLoading}
					clearBusyLoading={this.clearBusyLoading}/>)}
				/>
				<Route path="/stop" render={(routeProps) => (<PerformAction {...routeProps}
					loopAction="stop"
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}
					setBusyLoading={this.setBusyLoading}
					clearBusyLoading={this.clearBusyLoading}/>)}
				/>
				<Route path="/restart" render={(routeProps) => (<PerformAction {...routeProps}
					loopAction="restart"
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}
					setBusyLoading={this.setBusyLoading}
					clearBusyLoading={this.clearBusyLoading}/>)}
				/>
				<Route path="/delete" render={(routeProps) => (<PerformAction {...routeProps}
					loopAction="delete"
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}
					setBusyLoading={this.setBusyLoading}
					clearBusyLoading={this.clearBusyLoading}/>)}
				/>
				<Route path="/undeploy" render={(routeProps) => (<PerformAction {...routeProps}
					loopAction="undeploy"
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}
					setBusyLoading={this.setBusyLoading}
					clearBusyLoading={this.clearBusyLoading}/>)}
				/>
				<Route path="/deploy" render={(routeProps) => (<DeployLoopModal {...routeProps}
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}/>)}
				/>
				<Route path="/refreshStatus" render={(routeProps) => (<RefreshStatus {...routeProps}
					loopCache={this.getLoopCache()}
					updateLoopFunction={this.updateLoopCache}
					showSucAlert={this.showSucAlert}
					showFailAlert={this.showFailAlert}/>)}
				/>
			</React.Fragment>
		);
	}

        renderGlobalStyle() {
                return (
                        <GlobalClampStyle />
                );
        };


	renderSpinner() {
		if (this.isBusyLoading()) {
			return (
				<StyledSpinnerDiv>
					<Spinner animation="border" role="status">
						<span className="sr-only">Loading...</span>
					</Spinner>
				</StyledSpinnerDiv>
			);
		} else {
			return (<div></div>);
		}
	}

	render() {
		return (
				<StyledMainDiv id="main_div">
					{this.renderGlobalStyle()}
					{this.renderRoutes()}
					{this.renderSpinner()}
					{this.renderAlertBar()}
					{this.renderNavBar()}
					{this.renderLoopViewer()}
				</StyledMainDiv>
		);
	}
}