const State = require('../State')

class IsAliveState extends State {
    async apply() {
        throw new Error('IsAliveState cannot be applied. It is a check measure only.')
    }

    async check() {
        return this._host.is_alive()
    }

    async reverse() {
        throw new Error('IsAliveState cannot be reversed. It is a check measure only.')
    }

    failure_message() {
        return `Unable to connect to host "${this._host.name}".`
    }

    check_message() {
        return this.failure_message()
    }
}

module.exports = exports = IsAliveState