console.loggerName = 'js.equipmentMgr';
console.log('Load equipmentMgr');

const {
    lib,
    timer,
    watch
} = require('../utils');

class Equipment {
    constructor(equipmentItem) {

        // Fetch item if provided equipmentItem is a string
        if (typeof equipmentItem === 'string' || equipmentItem instanceof String) {
            this.equipmentItem = items[equipmentItem];
        } else {
            this.equipmentItem = equipmentItem;
        }

        // Throw error if item is not existing
        if (this.equipmentItem === null) {
            throw(`Item ${equipmentItem} not existing`);
        }

        // Throw error if item is not an equipment type
        if (this.equipmentItem.semantics.semanticType != 'Equipment') {
            throw(`Item ${this.equipmentItem.name} is not an equipment type`);            
        }

        console.info(`Initialization of equipment ${this.equipmentItem.name} with type ${this.constructor.name}`);

        // Initialization of properties
        this.name = this.equipmentItem.name;

        this.watch = new Object();
        this.timers = new timer.Timer();            

        // Check if equipment has state item
        if (this.hasProperty('State')) {
            this.stateItem = items[this.getPropertyItemName('State')];
            this.watch['State'] = new watch.Watch(this.stateItem);
        } else {
            console.info(`Item ${this.equipmentItem.name} has no state item`)
        }

        // Check if equipment has LowBat item
        if (this.hasProperty('LowBat')) {
            this.watch['LowBat'] = new watch.Watch(this.getPropertyItemName('LowBat'));
            this.watch['LowBat'].add({
                targetState: 'ON', 
                alertFunc: () => { this.#notifyLowBat(); },
                alertRepeat: 'PT23H'
            });
        }

        // Check if equipment has Unreach item
        if (this.hasProperty('Unreach')) {
            this.watch['Unreach'] = new watch.Watch(this.getPropertyItemName('Unreach'));
            this.watch['Unreach'].add({
                targetState: 'ON', 
                alertFunc: () => { this.#notifyUnreach(); },
                alertDelay: 'PT15M',
                alertRepeat: 'PT1H'
            });
        }
    }

    getValue(propertyName, defaultValue = '') {
        let valueItemName = this.name + '_' + propertyName;
        let returnValue = defaultValue;
  
        if (items[valueItemName] == null) {                             // Return default value if item is missing
            console.warn('Item ' + valueItemName + ' is missing');
        } else if (items[valueItemName]['state'] == 'NULL') {           // Return default value if item state is null
            console.warn('Item ' + valueItemName + ' is unset')
        } else {                                                        // Return value from item
            if (items[valueItemName].quantityState == null && items[valueItemName].numericState == null) {
                returnValue = items[valueItemName]['state'];                
            } else if (items[valueItemName].quantityState == null) {
                returnValue = items[valueItemName]['numericState']
            } else {
                returnValue = items[valueItemName].quantityState;
            }
        }       

        console.debug(`Return value for property ${propertyName} for ${this.name}: ${returnValue}`);
        return returnValue;
    }

    getPropertyItemName(propertyName) {
        if (this.hasProperty(propertyName)) {
            return items[this.name + '_' + propertyName].name;            
        }
    }

    hasProperty(propertyName) {
        if (items[this.name + '_' + propertyName] == null) {
            console.debug(`Eqipment ${this.name} has no property ${propertyName}`)
            return false;
        }
        return true;
    }

    #notifyLowBat() {
        console.warn(`${this.name} has a low battery level.`);
    }

    #notifyUnreach() {
        console.warn(`${this.name} is offline.`);
    }

    gc() {
        console.log('Denitialization of eqipment ' + this.name);

        // Delete all watchObjects
        for (let watchItem of Object.keys(this.watch)) {
            this.watch[watchItem].deleteAll();
        }

        // Cancel all timers
        this.timers.cancelAll();
    }
}

class Awning extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);
    }
}

class Car extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);
    }
}

class Doorbell extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);

        this.watch['State'].add({
            targetState: 'ON', 
            alertFunc: () => { items.getItem("OF_Alexa_Desk_TTS").sendCommand('Es hat geklingelt'); items.getItem("LR_Alexa_TV_TTS").sendCommand('Es hat geklingelt'); }
        });
    }
}

class Irrigation extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);

        // Initialization of properties
        this.valves = new Object();

        // Add on/off watch rule
        this.watch['State'].add({
            targetState: 'ON', 
            alertFunc: () => { this.#irrigationOn(); },
            endAlertFunc: () => { this.#irrigationOff(); },
        });

        // Fetch irrigation valves and initialize as subequipment
        for (let valve of this.equipmentItem.members.filter(item => { return item.tags.includes('IrrigationValve'); } )) {
            try {
                this.valves[valve.name] = new IrrigationValve(valve);
            } catch (error) {
                console.error(error);
            }
        }

    }

    gc() {
        console.info('Deinitialization of irrigation valves for ' + this.name);

        // Delete all watchObjects
        for (let valve of Object.keys(this.valves)) {
            this.valves[valve].gc();
        }

        // Call function to deinitialize irrigation
        super.gc();
    }

    #irrigationOn() {
        console.info(`Irrigation ${this.name} received command on`);

        // Fetch valves with AutoMode enabled
        let autoValves = Object.keys(this.valves).filter(element => { return this.valves[element].getValue('AutoMode', 'OFF') == 'ON'} );
        
        // Skip if no valves with AutoMode enabled are available
        if (autoValves.length == 0) {
            console.info('No valves with AutoMode enabled available');
            this.stateItem.sendCommandIfDifferent('OFF');
            return;
        }

        let totalDuration = 0;

        for (let i = 0; i < autoValves.length; i++) {
            let currentValve = autoValves[i];
            let nextValve = autoValves[(i + 1)];
            let duration = time.toZDT(this.valves[currentValve].getValue('Duration', 'PT30S')).getMillisFromNow();

            // calculate start and endtimes for valve
            let startTime = time.toZDT(totalDuration)
            totalDuration = totalDuration + duration;
            let endTime = time.toZDT(totalDuration);

            // Set timers for valve
            this.valves[currentValve].timers.create(
                                                    'autoOn',
                                                    startTime,
                                                    () => {
                                                        this.valves[currentValve].stateItem.sendCommandIfDifferent('ON');
                                                    }
                                                    );

            this.valves[currentValve].timers.create(
                                                    'autoOff',
                                                    endTime,
                                                    () => {
                                                        this.valves[currentValve].stateItem.sendCommandIfDifferent('OFF');
                                                    }
                                                    );

            // Stop irrigation after the last valve
            if (nextValve == undefined) {
                console.log('No further valves with autoMode enabled available');
                this.timers.create(
                                'autoOff',
                                endTime.plusSeconds(5),
                                () => {
                                    console.debug(`Switch irrigation ${this.name} to off`)
                                    this.stateItem.sendCommandIfDifferent('OFF');
                                }
                                );
            }
        }
    }

    #irrigationOff() {
        console.info(`Irrigation ${this.name} received command off`);

        this.timers.cancel('autoOff')

        for (let valve of Object.keys(this.valves)) {
            this.valves[valve].timers.cancel('autoOn');
            this.valves[valve].timers.cancel('autoOff');
            this.valves[valve].stateItem.sendCommandIfDifferent('OFF')
        }
    }
}

class IrrigationValve extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);

        this.watch['State'].add({
            targetState: 'ON', 
            alertFunc: () => { this.stateItem.sendCommand('OFF'); },
            alertDelay: 'PT30M'
        });
    }
}

class PresenceSensor extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);
    }
}

class TowelRadiator extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);

        this.watch['State'].add({
            targetState: 'ON', 
            alertFunc: () => { this.stateItem.sendCommand('OFF'); },
            alertDelay: 'PT59M'
        });
    }
}

class VoiceAssistant extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);
    }
}

class WeatherService extends Equipment {
    constructor(equipmentItem) {
        super(equipmentItem);
    }
}



const eMgr = new Object();

for (let equipmentItem of items.getItems().filter(element => { return (element.semantics.isEquipment == true) && (element.semantics.equipment == null) })) {
    
    // Get equipmentType
    var equipmentType = equipmentItem.tags.filter(element => { return !(element == 'Equipment') } );
    console.log(equipmentType);

    // Set default equipmentType if item does not provide a type
    if (equipmentType == '') {
        equipmentType = 'Equipment';
    }

    // Initialize equipment class
    try {
        eMgr[equipmentItem.name] = eval(`new ${equipmentType}(equipmentItem)`);
    } catch (error) {
        console.error(error);
    }
}

cache.shared.put('eMgr', eMgr);

require('@runtime').lifecycleTracker.addDisposeHook(() => {
    console.log('Deinitialization of equipmentMgr');

    for (let equipmentItemName of Object.keys(eMgr)) {
        eMgr[equipmentItemName].gc();
    }
});