var Gio = imports.gi.Gio;
var GLib = imports.gi.GLib;

let extensionPath = GLib.getenv("HOME") + "/.local/share/gnome-shell/extensions/paperwm@hedning:matrix.org";

let schemaSource = Gio.SettingsSchemaSource.new_from_directory(
    GLib.build_filenamev([extensionPath, "schemas"]),
    Gio.SettingsSchemaSource.get_default(),
    false
);

let schemaObj = schemaSource.lookup("org.gnome.Shell.Extensions.PaperWM.Keybindings", true);

let settings = new Gio.Settings({settings_schema: schemaObj})


let keysymToChar = {
    comma: ',',
    period: '.',
}

let renderAll = ARGV[0] == "--all"

function arrayEqual(a, b) {
    if (a.length != b.length)
        return false;
    for (let i = 0; i < a.length; i++) {
        if (a[i] !== b[i])
            return false;
    }
    return true;
}

let lines = []
lines.push("| Keybindings | Description |");
lines.push("| ----------- | ----------- |");
for (let name of settings.list_keys()) {
    let schemaKey = settings.settings_schema.get_key(name);
    let bindingStrs = settings.get_strv(name);
    let defaultValue = schemaKey.get_default_value().get_strv()

    if (!renderAll && arrayEqual(defaultValue, bindingStrs))
        continue

    let line = "| ";

    // let binding = settings.get_strv("move-left")[0];
    function renderBinding(binding) {
        let modifiers = [];
        let i = 0;
        while (true) {
            let match = binding.slice(i).match(/<([^>]*)>/);
            if (match === null)
                break;
            i += match[0].length;
            modifiers.push(match[1]);
        }

        let key = binding.slice(i);
        key = keysymToChar[key] || key;


        return [...modifiers, key].map(m => `<kbd>${m}</kbd>`).join("");
    }

    line += bindingStrs.map(b => renderBinding(b)).join(" or ");
    line += " | ";
    line += schemaKey.get_summary();
    line += " |";
    lines.push(line);
}

print(lines.join("\n"))