require('./homePage.less');
const React = require('react');
const createClass = require('create-react-class');
const cx = require('classnames');
const request = require('../../utils/request-middleware.js');
const { Meta } = require('vitreum/headtags');

const Nav = require('naturalcrit/nav/nav.jsx');
const Navbar = require('../../navbar/navbar.jsx');
const NewBrewItem = require('../../navbar/newbrew.navitem.jsx');
const HelpNavItem = require('../../navbar/help.navitem.jsx');
const VaultNavItem = require('../../navbar/vault.navitem.jsx');
const RecentNavItem = require('../../navbar/recent.navitem.jsx').both;
const AccountNavItem = require('../../navbar/account.navitem.jsx');
const ErrorNavItem = require('../../navbar/error-navitem.jsx');
const { fetchThemeBundle } = require('../../../../shared/helpers.js');

const SplitPane = require('naturalcrit/splitPane/splitPane.jsx');
const Editor = require('../../editor/editor.jsx');
const BrewRenderer = require('../../brewRenderer/brewRenderer.jsx');

const { DEFAULT_BREW } = require('../../../../server/brewDefaults.js');

const HomePage = createClass({
	displayName     : 'HomePage',
	getDefaultProps : function() {
		return {
			brew : DEFAULT_BREW,
			ver  : '0.0.0'
		};
	},
	getInitialState : function() {
		return {
			brew                       : this.props.brew,
			welcomeText                : this.props.brew.text,
			error                      : undefined,
			currentEditorViewPageNum   : 1,
			currentEditorCursorPageNum : 1,
			currentBrewRendererPageNum : 1,
			themeBundle                : {}
		};
	},

	editor : React.createRef(null),

	componentDidMount : function() {
		fetchThemeBundle(this, this.props.brew.renderer, this.props.brew.theme);
	},

	handleSave : function(){
		request.post('/api')
			.send(this.state.brew)
			.end((err, res)=>{
				if(err) {
					this.setState({ error: err });
					return;
				}
				const brew = res.body;
				window.location = `/edit/${brew.editId}`;
			});
	},
	handleSplitMove : function(){
		this.editor.current.update();
	},

	handleEditorViewPageChange : function(pageNumber){
		this.setState({ currentEditorViewPageNum: pageNumber });
	},

	handleEditorCursorPageChange : function(pageNumber){
		this.setState({ currentEditorCursorPageNum: pageNumber });
	},

	handleBrewRendererPageChange : function(pageNumber){
		this.setState({ currentBrewRendererPageNum: pageNumber });
	},

	handleTextChange : function(text){
		this.setState((prevState)=>({
			brew : { ...prevState.brew, text: text },
		}));
	},
	renderNavbar : function(){
		return <Navbar ver={this.props.ver}>
			<Nav.section>
				{this.state.error ?
					<ErrorNavItem error={this.state.error} parent={this}></ErrorNavItem> :
					null
				}
				<NewBrewItem />
				<HelpNavItem />
				<VaultNavItem />
				<RecentNavItem />
				<AccountNavItem />
			</Nav.section>
		</Navbar>;
	},

	render : function(){
		return <div className='homePage sitePage'>
			<Meta name='google-site-verification' content='NwnAQSSJZzAT7N-p5MY6ydQ7Njm67dtbu73ZSyE5Fy4' />
			{this.renderNavbar()}
			<SplitPane onDragFinish={this.handleSplitMove}>
				<Editor
					ref={this.editor}
					brew={this.state.brew}
					onTextChange={this.handleTextChange}
					renderer={this.state.brew.renderer}
					showEditButtons={false}
					snippetBundle={this.state.themeBundle.snippets}
					onCursorPageChange={this.handleEditorCursorPageChange}
					onViewPageChange={this.handleEditorViewPageChange}
					currentEditorViewPageNum={this.state.currentEditorViewPageNum}
					currentEditorCursorPageNum={this.state.currentEditorCursorPageNum}
					currentBrewRendererPageNum={this.state.currentBrewRendererPageNum}
				/>
				<BrewRenderer
					text={this.state.brew.text}
					style={this.state.brew.style}
					renderer={this.state.brew.renderer}
					onPageChange={this.handleBrewRendererPageChange}
					currentEditorViewPageNum={this.state.currentEditorViewPageNum}
					currentEditorCursorPageNum={this.state.currentEditorCursorPageNum}
					currentBrewRendererPageNum={this.state.currentBrewRendererPageNum}
					themeBundle={this.state.themeBundle}
				/>
			</SplitPane>
			<div className={cx('floatingSaveButton', { show: this.state.welcomeText != this.state.brew.text })} onClick={this.handleSave}>
				Save current <i className='fas fa-save' />
			</div>

			<a href='/new' className='floatingNewButton'>
				Create your own <i className='fas fa-magic' />
			</a>
		</div>;
	}
});

module.exports = HomePage;
