class Scanner {
    constructor({ controllers }) {
        this._controllers = controllers
    }
    get _controllersByType() {
        return this._controllers.reduce((byType, controller)=> {
            const type = controller.type
            if(byType[type].length < 1) byType[type] = []
            byType[type].push(controller)
            return byType
        }, {})
    }
    /**
     * Example: only temp controllers in range?
     * const tempControlsOK = allInRange('temp')
     * 
     * Example: every controller in range?
     * const everythingOK = allInRange()
    */
    allInRange(type) {
        const all = type ? this._controllersByType[type] : this._controllers
        return all.every(controller => controller.inRange === true)
    }
    readAll() {
        const completeReadout = {}
        this._controllers.forEach(controller => {
            const readout = controller.readout()
            completeReadout[readout.from] = readout
        })
        return completeReadout
    }
}

module.exports = {
    Scanner
}