import Toybox.Graphics;
import Toybox.Lang;
import Toybox.System;
import Toybox.WatchUi;
import Toybox.Time.Gregorian;

using Toybox.ActivityMonitor;

class terminalfaceView extends WatchUi.WatchFace {
    private var font as FontResource?;
    private var curY as Number?;
    private var lineSpace as Number?;
    private var blinking as Boolean?;
    private var lastBlink as Boolean?;

    function initialize() {
        WatchFace.initialize();
        font = WatchUi.loadResource(Rez.Fonts.id_font_input) as FontResource;
        lineSpace = 23;
        blinking = false;
        lastBlink = false;
    }

    // Load your resources here
    function onLayout(dc as Dc) as Void {
        setLayout(Rez.Layouts.WatchFace(dc));
    }

    // Called when this View is brought to the foreground. Restore
    // the state of this View and prepare it to be shown. This includes
    // loading resources into memory.
    function onShow() as Void {
    }

    private function prompt(dc as Dc, cmd as String) as Void {
        dc.setColor(Graphics.COLOR_GREEN, Graphics.COLOR_TRANSPARENT);
        dc.drawText(25, curY, font, "si", Graphics.TEXT_JUSTIFY_LEFT);
        
        dc.setColor(Graphics.COLOR_BLUE, Graphics.COLOR_TRANSPARENT);
        dc.drawText(50, curY, font, "@", Graphics.TEXT_JUSTIFY_LEFT);

        dc.setColor(Graphics.COLOR_RED, Graphics.COLOR_TRANSPARENT);
        dc.drawText(63, curY, font, "fnx", Graphics.TEXT_JUSTIFY_LEFT);

        dc.setColor(Graphics.COLOR_BLUE, Graphics.COLOR_TRANSPARENT);
        dc.drawText(113, curY, font, "~>", Graphics.TEXT_JUSTIFY_LEFT);
        
        dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_TRANSPARENT);
        dc.drawText(150, curY, font, Lang.format("$1$", [cmd]), Graphics.TEXT_JUSTIFY_LEFT);

        curY += lineSpace;
    }

    private function response(dc as Dc, text as String) as Void {
        dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_TRANSPARENT);
        dc.drawText(25, curY, font, text, Graphics.TEXT_JUSTIFY_LEFT);

        curY += lineSpace;
    }

    private function makeBatteryString() {
        var stats = System.getSystemStats();
        var batteryLevel = stats.battery;
        var batteryDays = stats.batteryInDays;

        var bar = new [10];
        for (var i = 0; i < 10; i += 1)
        {
            if (batteryLevel > i*10)
            {
                bar[i] = '#';
            }
            else
            {
                bar[i] = '-';
            }
        }

        bar.add(batteryDays.toNumber());

        return Lang.format("[$1$$2$$3$$4$$5$$6$$7$$8$$9$$10$] ($11$d)", bar);
    }

    // Update the view
    function onUpdate(dc as Dc) as Void {
        curY = 50;

        dc.setColor(Graphics.COLOR_TRANSPARENT, Graphics.COLOR_BLACK);
        dc.clear();

        prompt(dc, "date");

        var today = Gregorian.info(Time.now(), Time.FORMAT_MEDIUM);
        var dateString = Lang.format("$1$ $2$ $3$ $4$:$5$",
        [
            today.day_of_week,
            today.month,
            today.day,
            today.hour.format("%02d"),
            today.min.format("%02d"),
        ]);

        response(dc, dateString);

        prompt(dc, "steps");
        var info = ActivityMonitor.getInfo();
        var steps = info.steps.toFloat();
        var stepGoal = info.stepGoal.toFloat();
        var ratio = (steps/stepGoal)*100;
        response(dc, Lang.format("$1$/$2$ ($3$%)", [steps.toNumber(), stepGoal.toNumber(), ratio.toNumber()]));

        prompt(dc, "battery");
        var batteryString = makeBatteryString();
        response(dc, batteryString);

        if (blinking)
        {
            if (lastBlink)
            {
                prompt(dc, "");
                lastBlink = false;
            }
            else
            {
                prompt(dc, "_");
                lastBlink = true;
            }
        }
        else
        {
            prompt(dc, "_");
        }

    }

    // Called when this View is removed from the screen. Save the
    // state of this View here. This includes freeing resources from
    // memory.
    function onHide() as Void {
    }

    // The user has just looked at their watch. Timers and animations may be started here.
    function onExitSleep() as Void {
        blinking = true;
    }

    // Terminate any active timers and prepare for slow updates.
    function onEnterSleep() as Void {
        blinking = false;
    }

}