/*
 *	Bathroom Humidity Fan (Parent)
 *
 *  I just wanted a parent/child version.
 * 
 * 
 */

def setVersion(){
	state.version = "1.1.43" // Version number of this app
	state.InternalName = "BathroomHumidityFan"   // this is the name used in the JSON file for this app
}

definition(
    name: "Bathroom Humidity Fan",
    namespace: "Craig.Romei",
    singleInstance: true,
    author: "Craig Romei",
    description: "Control a fan (switch) based on relative humidity. - Parent",
    category: "Convenience",
    iconUrl: "",
    iconX2Url: "",
    iconX3Url: "",
    importUrl: "https://raw.githubusercontent.com/napalmcsr/Hubitat_Napalmcsr/master/Apps/BathroomHumidityFan/BathroomHumidity.src")

preferences {
	page(name: "mainPage")
}

def mainPage() {
	return dynamicPage(name: "mainPage", title: "", install: true, uninstall: true) {
        if(!state.ShfInstalled) {
            section("Hit Done to install Bathroom Humidity Fan App") {
        	}
        }
        else {
        	section("<b>Create a new Bathroom Humidity Fan Instance.</b>") {
            	app(name: "childApps", appName: "Bathroom Humidity Fan Child", namespace: "Craig.Romei", title: "New Bathroom Humidity Fan Instance", multiple: true)
        	}
            section("<b>Create a combined humidity sensor.</b>") {
			    input "humidSensors", "capability.relativeHumidityMeasurement", title: "Select Humidity Sensors", submitOnChange: true, required: false, multiple: true
                input name: "Create", type: "button", title: state.createCombinedSensorButtonName, submitOnChange:true, width: 5
			if(humidSensors) paragraph "Current average is ${averageHumid()}%"
		    }
    	}
    }
}

def installed() {
    state.ShfInstalled = true
	initialize()
}

def updated() {
	initialize()
    if (state?.created == null) {(state.created = false)}
}

def initialize() {
    def averageDev = getChildDevice("AverageHumid_${app.id}")
	if (getChildDevice("AverageHumid_${app.id}")) {(getChildDevice("AverageHumid_${app.id}")).setHumidity(averageHumid())}
    if (humidSensors) {subscribe(humidSensors, "humidity", handler)}
    setCreateCombinedSensorButtonName()
}

def averageHumid() {
	def total = 0
	def n = humidSensors.size()
	humidSensors.each {total += it.currentHumidity}
	return (total / n).toDouble().round(1)
}

def handler(evt) {
	def avg = averageHumid()
    if (getChildDevice("AverageHumid_${app.id}")) {(getChildDevice("AverageHumid_${app.id}")).setHumidity(averageHumid())}
}

def setCreateCombinedSensorButtonName() {
    if (getChildDevice("AverageHumid_${app.id}")) {
        state.createCombinedSensorButtonName = "Delete Combined Humidity Sensor"
    } else if (!getChildDevice("AverageHumid_${app.id}")) {
        state.createCombinedSensorButtonName = "Create Combined Humidity Sensor"
    }
}

def appButtonHandler(btn) {
    state.created = !state.created
    if (!getChildDevice("AverageHumid_${app.id}")) {
        addChildDevice("hubitat", "Virtual Humidity Sensor", "AverageHumid_${app.id}", null, [label: thisName, name: thisName])
    } else if (state.createCombinedSensorButtonName =="Delete Combined Humidity Sensor") {
        (deleteChildDevice("AverageHumid_${app.id}"))
    }
setCreateCombinedSensorButtonName()
}