import React, {Component} from 'react';

import './App.scss';
import {declineSaimiar} from './saimiar_morphology.js';

const backendUrl = 'https://kucinakobackend.ichigo.everydayimshuflin.com';

function makeRequest(queryString, jsonHandler) {
	const effectiveUrl = `${backendUrl}/${queryString}`;
	fetch(`${effectiveUrl}`)
		.then((resp) => resp.json())
		.then((json) => {
			jsonHandler(json);
		});
}

function renderConlangName(name) {
	if (name === 'saimiar') {
		return 'Saimiar';
	}

	if (name === 'elesu') {
		return 'Elésu';
	}

	if (name === 'juteyuji') {
		return 'Juteyuji';
	}

	if (name === 'tukvaysi') {
		return 'Tukvaysi';
	}
}

const Entry = (props) => {
	const {conlang} = props;
	if (conlang === 'saimiar') {
		return <SaiEntry entry={ props.entry } />;
	}

	return <div>Unknown entry type for { conlang }</div>;
};

const SaiEntry = (props) => {
	const {entry} = props;
	const synCategory = entry.syn_category;
	const isNominal = synCategory === 'nominal';
	return (
		<div className="searchResult" key={ entry.id }>
			<b>{ entry.sai }</b> - { entry.eng }
			<br />
			<span className="synclass">
				<i>{ entry.syn_category }</i>
				{ entry.morph_type ? `\t\t${entry.morph_type}` : null }
				<br/>
				{ isNominal ? formatMorphology(entry) : null }
			</span>
		</div>
	);
};

function formatMorphology(entry) {
	const decl = declineSaimiar(entry);
	if (!decl) {
		return '';
	}

	return (<span style={ {fontSize: 'medium', color: '#6a3131'} } >
        Abs: <i>{decl.abs}</i>, Erg: <i>{decl.erg}</i>,
        Adp: <i>{decl.adp}</i>,
        All: <i>{decl.all}</i>,
        Loc: <i>{decl.loc}</i>,
        Ell: <i>{decl.ell}</i>,
        Inst: <i>{decl.inst}</i>,
        Rel: <i>{decl.rel}</i>
	</span>);
}

const Results = (props) => {
	const content = () => {
		const {conlang} = props;
		const num = props.searchResults.length;
		const renderedName = renderConlangName(conlang);
		const searchType = (props.direction === 'toConlang') ? `English -> ${renderedName}` : `${renderedName} -> English`;
		const header = (
			<div className="searchResultHeader" key="header">
        Searched for <b>{ props.searchTerm }</b>, { searchType }, found { num } result(s)
			</div>);
		const entries = props.searchResults.map(
			(entry, _idx) => <Entry entry={ entry } key= { entry.id } conlang={ conlang } />,
		);
		return [header].concat(entries);
	};

	const results = props.searchResults;
	return (
		<div className="results">
			{ results ? content() : 'No search' }
		</div>
	);
};

class App extends Component {
	constructor(props) {
		super(props);
		this.input = React.createRef();
		this.handleLangChange = this.handleLangChange.bind(this);

		this.searchEng = this.searchEng.bind(this);
		this.searchSaimiar = this.searchSaimiar.bind(this);

		this.state = {
			searchResults: null,
			conlang: 'saimiar',
			direction: null,
			searchTerm: null,
		};
	}

	searchSaimiar(_evt) {
		const searchTerm = this.input.current.value;
		const request = `saimiar?sai=like.*${searchTerm}*`;
		if (searchTerm === '') {
			this.setState({searchResults: null, searchTerm: null, direction: null});
		} else {
			makeRequest(request, (json) => {
				this.setState({searchResults: json, searchTerm, direction: 'toEnglish'});
			});
		}
	}

	searchEng(_evt) {
		const searchTerm = this.input.current.value;
		const request = `saimiar?eng=like.*${searchTerm}*`;
		if (searchTerm === '') {
			this.setState({searchResults: null, searchTerm: null});
		} else {
			makeRequest(request, (json) => {
				this.setState({searchResults: json, searchTerm, direction: 'toConlang'});
			});
		}
	}

	handleLangChange(evt) {
		const conlang = evt.target.value;
		this.setState({conlang});
	}

	render() {
		return (
			<main>
				<div className="container">
					<div className="search">
						<h1>Kucinako</h1>
						<div className="textInput">
							<input className="textInput" type="text" ref={ this.input } />
						</div>
						<br/>
						<select ref={ this.langSelection } onChange={ this.handleLangChange } defaultValue="saimiar">
							<option value="saimiar">Saimiar</option>
							<option value="elesu">Elesu</option>
							<option value="tukvaysi">Tukvaysi</option>
							<option value="juteyuji">Juteyuji</option>
						</select>
						<button onClick={ this.searchSaimiar } className="searchButton">Saimiar</button>
						<button onClick={ this.searchEng } className="searchButton">English</button>
					</div>
					<Results
						searchResults={ this.state.searchResults }
						searchTerm= { this.state.searchTerm }
						conlang={ this.state.conlang }
						direction={ this.state.direction }
					/>
				</div>
			</main>
		);
	}
}

export default App;