const {MessageEmbed, Util} = require('discord.js');

/**
 * Searches a Gamepedia wiki.
 * @param {import('../../util/i18n.js')} lang - The user language.
 * @param {import('discord.js').Message} msg - The Discord message.
 * @param {String} searchterm - The searchterm.
 * @param {import('../../util/wiki.js')} wiki - The wiki for the search.
 * @param {Object} query - The siteinfo from the wiki.
 * @param {import('discord.js').MessageReaction} reaction - The reaction on the message.
 * @param {String} spoiler - If the response is in a spoiler.
 */
function gamepedia_search(lang, msg, searchterm, wiki, query, reaction, spoiler) {
	if ( searchterm.length > 250 ) {
		searchterm = searchterm.substring(0, 250);
		msg.reactEmoji('⚠️');
	}
	var pagelink = wiki.toLink('Special:Search', {search:searchterm,fulltext:1});
	var embed = new MessageEmbed().setAuthor( query.general.sitename ).setTitle( '`' + searchterm + '`' ).setURL( pagelink );
	if ( !searchterm.trim() ) {
		pagelink = wiki.toLink('Special:Search');
		embed.setTitle( 'Special:Search' ).setURL( pagelink );
	}
	var description = [];
	got.get( wiki + 'api.php?action=query&titles=Special:Search&list=search&srinfo=totalhits&srprop=redirecttitle|sectiontitle&srnamespace=4|12|14|' + Object.values(query.namespaces).filter( ns => ns.content !== undefined ).map( ns => ns.id ).join('|') + '&srlimit=10&srsearch=' + encodeURIComponent( ( searchterm || ' ' ) ) + '&format=json' ).then( response => {
		var body = response.body;
		if ( body && body.warnings ) log_warn(body.warnings);
		if ( response.statusCode !== 200 || !body || !body.query || !body.query.search || body.batchcomplete === undefined ) {
			return console.log( '- ' + response.statusCode + ': Error while getting the search results: ' + ( body && body.error && body.error.info ) );
		}
		if ( body.query.pages && body.query.pages['-1'] && body.query.pages['-1'].title ) {
			if ( searchterm.trim() ) {
				pagelink = wiki.toLink(body.query.pages['-1'].title, {search:searchterm,fulltext:1});
				embed.setURL( pagelink );
			}
			else {
				pagelink = wiki.toLink(body.query.pages['-1'].title);
				embed.setTitle( body.query.pages['-1'].title ).setURL( pagelink );
			}
		}
		if ( searchterm.trim() ) {
			body.query.search.forEach( result => {
				description.push( '• [' + result.title + '](' + wiki.toLink(result.title, '', '', true) + ')' + ( result.sectiontitle ? ' § [' + result.sectiontitle + '](' + wiki.toLink(result.title, '', result.sectiontitle, true) + ')' : '' ) + ( result.redirecttitle ? ' (⤷ [' + result.redirecttitle + '](' + wiki.toLink(result.redirecttitle, 'redirect=no', '', true) + '))' : '' ) );
			} );
			if ( body.query.searchinfo ) {
				embed.setFooter( lang.get('search.results', body.query.searchinfo.totalhits) );
			}
		}
	}, error => {
		console.log( '- Error while getting the search results.' + error );
	} ).finally( () => {
		embed.setDescription( Util.splitMessage( description.join('\n') )[0] );
		msg.sendChannel( spoiler + '<' + pagelink + '>' + spoiler, {embed} );
		
		if ( reaction ) reaction.removeEmoji();
	} );
}

module.exports = {
	name: 'search',
	run: gamepedia_search
};