fdgt-apis/api

// Local imports
import CAPABILITIES from 'data/CAPABILITIES'





// Local constants
const { HOST } = process.env





export default (message, connection) => {
    const {
        addCapabilities,
        send,
        sendMOTD,
        sendUnknownCommand,
    } = connection
    const [subcommand, arg] = message.params

    switch (subcommand.toUpperCase()) {
        case 'END':
            connection.capabilitiesFinished = true
            connection.emit('acknowledge')
            break

        case 'LIST':
        case 'LS':
            send(`:${HOST} CAP * ${subcommand.toUpperCase()} :${CAPABILITIES.join(' ')}`)
            break

        case 'REQ':
            const capabilities = arg?.split(' ') ?? []
            addCapabilities(capabilities)
            send(`:${HOST} CAP * ACK :${capabilities.filter(capability => CAPABILITIES.includes(capability)).join(' ')}`)
            connection.capabilitiesFinished = true
            connection.emit('acknowledge')
            break

        default:
            sendUnknownCommand(`CAP ${subcommand.toUpperCase()}`)
    }
}