system.js

class System {
    constructor() {
        this.connection = "unknown";
        this.power = "unknown";
        this.health = "unknown";
        this.projector = new Projector();
        this.projector.system = this;
        this.ahm = new Ahm16();
        this.ahm.system = this;
        this.kramer = new KramerVs411X();
        this.status_display = null;

        // Store previous states
        this.pconnection = this.connection;
        this.ppower = this.power;
        this.phealth = this.health;

        this.pdante = null;

        // Callback functions
        this.onPowerChange = ()=>{};
        this.onPowerOn = ()=>{};
        this.onPowerOff = ()=>{};
        this.onPowerShuttingDown = ()=>{};
        this.onPowerStartingUp = ()=>{};
        this.onPowerUnknown = ()=>{};
        this.onPowerRequestedUp = ()=>{};
        this.onPowerRequestedDown = ()=>{};

        this.onHealthChange = ()=>{};
        this.onHealthOk = ()=>{};
        this.onHealthProblematic = ()=>{};
        this.onHealthCritical = ()=>{};
        this.onHealthUnknown = ()=>{};
    }

    updateFromStatus(status) {
        if (status === undefined) {
            console.error(`status in method system.updateFromStatus(status) was undefined`);
            return;
        }

        if (! 'system' in status) {
            console.error(`Key "system" not found in status in method system.updateFromStatus(status). Could not update system status`);
            return;
        }
        let system_status = status["system"];

        // console.log(status);

        // Update Projector and DSP-subsystems as well
        if ('projector' in status) { this.projector.updateFromStatus(status); }
        if ('ahm' in status) { this.ahm.updateFromStatus(status); }
        if ('kramer' in status) { this.kramer.updateFromStatus(status); }

        // Power States and Callbacks
        if ('power' in system_status) { 
            this.power = system_status['power'];
            if (this.ppower != this.power) { 
                this.onPowerChange(this); 
                if (this.power == "on") { 
                    this.onPowerOn(this); 
                    updateStatus(this.status_display, "on", "on");
                }
                if (this.power == "off") { 
                    this.onPowerOff(this); 
                    updateStatus(this.status_display, "off", "off");
                    let uptime_display = document.getElementById("uptime-display");
                    uptime_display.classList.add("hidden");
                }
                if (this.power == "unknown") { 
                    this.onPowerUnknown(this); 
                    updateStatus(this.status_display, "unknown", "unknown");
                }
                if (this.power == "shutting down") { 
                    this.onPowerShuttingDown(this); 
                    updateStatus(this.status_display, "stopping", "stopping");
                }
                if (this.power == "starting up") { 
                    this.onPowerStartingUp(this); 
                    updateStatus(this.status_display, "starting", "starting");
                }
                if (this.power == "requested powerup") { 
                    this.onPowerRequestedUp(this);
                    updateStatus(this.status_display, "starting...", "starting...");
                }
                if (this.power == "requested powerdown") { 
                    this.onPowerRequestedDown(this); 
                    updateStatus(this.status_display, "stopping...", "stopping...");
                }
            }

            // Update the Uptime if the system is on
            if (this.power == "on" && 'power-time' in system_status) {
                let uptime_display = document.getElementById("uptime-display");
                uptime_display.classList.remove("hidden");
                let power_up = Date.parse(system_status['power-time']);
                let now = new Date();
                let t = now - power_up;
                let seconds =  Math.round(t/1000, 0);
                let minutes = Math.round(t/1000/60, 0);
                if (minutes < 1) {
                    uptime_display.innerHTML = `on for ${seconds} s`;
                } else if (minutes < 240) {
                    uptime_display.innerHTML = `on for ${minutes} min`;
                } else {
                    let hours = Math.round(t/1000/60/60, 1);
                    uptime_display.innerHTML = `on for ${hours} h`;
                }
                
            }
        };

        // Health Changes
        if ('health' in system_status) { 
            this.health = system_status['health'];
            if (this.phealth != this.health) { 
                this.onHealthChange(this); 
                if (this.health == "ok") { this.onHealthOk(this); }
                if (this.health == "problematic") { this.onHealthProblematic(this); }
                if (this.health == "critical") { this.onHealthCritical(this); }
                if (this.health == "unknown") { this.onHealthUnknown(this); }
            }
        };

        // Power States and Callbacks
        if ('dante-on' in status) { 
            this.dante = status['dante-on'];
            if (this.pdante != this.dante) { 
                let button = document.getElementById("toggle-button-dante_active_button");

                if (button !== null) {
                    if (this.dante) { 
                        button.toggle_button.setInactive();
                        console.log("Dante activated");
                        main.classList.add("dante");
                    } else {
                        button.toggle_button.setActive();
                        console.log("Dante deactivated");
                        main.classList.remove("dante");
                    }
                }
            }
            this.pdante = this.dante;
        };

        // Store previous values
        this.pconnection = this.connection;
        this.ppower = this.power;
        this.phealth = this.health;
        this.pstatus = status;
    }
}