import Toybox.Attention;
import Toybox.Graphics;
import Toybox.Lang;
import Toybox.Timer;
import Toybox.WatchUi;

// Red warning flash when GPS acquisition fails. 3× vibration + German
// error message for Config.ERROR_DISPLAY_MS, then closes the app.
class ErrorView extends WatchUi.View {

    private var _timer as Timer.Timer;

    function initialize() {
        View.initialize();
        _timer = new Timer.Timer();
    }

    function onShow() as Void {
        if (Attention has :vibrate) {
            var profile = [
                new Attention.VibeProfile(75, 250),
                new Attention.VibeProfile(0,  150),
                new Attention.VibeProfile(75, 250),
                new Attention.VibeProfile(0,  150),
                new Attention.VibeProfile(75, 250)
            ] as Array<Attention.VibeProfile>;
            Attention.vibrate(profile);
        }
        _timer.start(method(:_dismiss), Config.ERROR_DISPLAY_MS, false);
    }

    function onHide() as Void {
        _timer.stop();
    }

    function _dismiss() as Void {
        System.exit();
    }

    function onUpdate(dc as Dc) as Void {
        dc.setColor(Config.COLOR_FG, Config.COLOR_BG);
        dc.clear();

        var cx = LayoutMetrics.centerX(dc);
        var cy = LayoutMetrics.centerY(dc);
        var min = LayoutMetrics.minDim(dc);
        var iconRadius = (min * 0.1).toNumber();
        var iconCy = (min * 0.25).toNumber();

        dc.setColor(Config.COLOR_ERROR, Config.COLOR_BG);
        dc.fillCircle(cx, iconCy, iconRadius);
        dc.setColor(Config.COLOR_BG, Config.COLOR_ERROR);
        dc.drawText(cx, iconCy, Graphics.FONT_MEDIUM, "!",
            Graphics.TEXT_JUSTIFY_CENTER | Graphics.TEXT_JUSTIFY_VCENTER);

        dc.setColor(Config.COLOR_FG, Config.COLOR_BG);
        var textCy = cy + (min * 0.08).toNumber();
        TextUtils.drawResourceCentered(dc, Rez.Strings.error_gps, cx, textCy, Graphics.FONT_TINY);
    }
}