src/server/utils/serverutils.js

import { getField } from '../server'
import { GLOBAL } from '../../client/js/global'

/**
 * Misc. standalone utilities for the server.
 */

/**
 * Returns the index of the given team within the team array of the given room.
 * @param {string} room The room name to check
 * @param {string} teamName The team name to return the number of
 */
export function getTeamNumber (room, teamName) {
	for (let i = 0; i < getField(['rooms', room, 'teams']).length; i++) {
		if (getField(['rooms', room, 'teams'])[i].name === teamName) {
			return i
		}
	}

	return -1 // Team not found
}

/**
 * Returns the team colors object (see client socket.js for more information on the format)
 * @param {string} room The room name to check
 */
export function getTeamColors (room) {
	let teamObj = getField(['rooms', room, 'teams'])

	let result = {}
	for (let i = 0; i < 4; i++) {
		if (teamObj[i]) {
			result[teamObj[i].name] = i
		}
	}
	return result
}

/**
 * Returns the serverside ID of the tile at this location.
 * If the tile is not capturable, then returns false.
 * @param {*} globalLocation Contains globalX and globalY. Location on the map
 * @param {string} room The room name to check
 */
export function getTileID (globalLocation, room) {
	for (let tileID in getField(['rooms', room, 'tiles'])) {
		let tile = getField(['rooms', room, 'tiles', tileID])
		if (tile.globalX === globalLocation.globalX && tile.globalY === globalLocation.globalY) {
			return tileID
		}
	}

	return false
}

/**
 * @param {*} socket The socket.io instance (independent)
 * @param {string} room Name of the room to emit to.
 * @param {string} emitName Name of the emit event, used to match on the clientside.
 * @param {*} emitContent What content to send over. This can be any object.
 * @param {string} to (OPTIONAL) What ID to send the emit to. Default: sends to all players.
 */
export function smartEmit(socket, room, emitName, emitContent, to = '_ALL') {
	if (to === '_ALL') {
		socket.to(room).emit(emitName, emitContent)
		socket.emit(emitName, emitContent)
	}
	else {
		if (to === socket.id) {
			socket.emit(emitName, emitContent)
		}
		else {
			socket.to(to).emit(emitName, emitContent)
		}
	}
}