// Author:  cirakg & claude ai
// Summary: The user's options (README 10.2, Options group), read from app properties with safe defaults.
//
// The properties are defined in resources/settings/properties.xml (reading
// an undefined one stops the app with an uncatchable system error); M7 adds
// the phone form. A value of the wrong type or out of range falls back to
// the default below.

import Toybox.Application;
import Toybox.Lang;

class Options {

    static const CODE_NORMAL = 0;
    static const CODE_LARGE = 1;
    static const CODE_HUGE = 2;

    static const THEME_DARK = 0;
    static const THEME_LIGHT = 1;

    // optAutoLock list values, in ms: Immediately, 15 s, 30 s, 1 min, 2 min, 5 min.
    static const AUTO_LOCK_CHOICES = [0, 15000, 30000, 60000, 120000, 300000];
    static const AUTO_LOCK_DEFAULT = 3;
    static const MAX_TIME_OFFSET_S = 120;

    var autoLockMs as Number = 60000;
    var eraseAfterFailures as Boolean = false;
    var timeOffset as Number = 0;
    var codeSize as Number = CODE_LARGE;
    var theme as Number = THEME_DARK;
    var showGroups as Boolean = true;
    var encryptNames as Boolean = false;
    var glanceCode as Boolean = false;
    var fullBrightness as Boolean = true;

    function initialize() {
    }

    // Read every option; anything missing or invalid keeps its default.
    function load() as Void {
        var autoLock = choice("optAutoLock", AUTO_LOCK_DEFAULT, AUTO_LOCK_CHOICES.size() - 1);
        autoLockMs = AUTO_LOCK_CHOICES[autoLock] as Number;
        eraseAfterFailures = flag("optWipe", false);
        var offset = number("optTimeOffset");
        timeOffset = (offset != null && offset >= -MAX_TIME_OFFSET_S && offset <= MAX_TIME_OFFSET_S) ? offset : 0;
        codeSize = choice("optCodeSize", CODE_LARGE, CODE_HUGE);
        theme = choice("optTheme", THEME_DARK, THEME_LIGHT);
        showGroups = flag("optGroups", true);
        encryptNames = flag("optEncryptNames", false);
        glanceCode = flag("optGlanceCode", false);
        fullBrightness = flag("optBrightness", true);
    }

    // A property, or null when it doesn't exist (before M7) or can't be read.
    private function raw(key as String) as Application.Properties.ValueType or Null {
        try {
            return Application.Properties.getValue(key);
        } catch (e instanceof Lang.Exception) {
            return null;
        }
    }

    private function number(key as String) as Number? {
        var v = raw(key);
        return v instanceof Number ? v : null;
    }

    // A list index in 0..max, or the default.
    private function choice(key as String, defaultValue as Number, max as Number) as Number {
        var v = number(key);
        return (v != null && v >= 0 && v <= max) ? v : defaultValue;
    }

    private function flag(key as String, defaultValue as Boolean) as Boolean {
        var v = raw(key);
        return v instanceof Boolean ? v : defaultValue;
    }
}