define([], function() {

    // filesystem feature
    function fileExists(path) {

        if (!globalThis.NativeAppHost.supports('filesystem')) {
            return Promise.reject();
        }

        return globalThis.NativeFeature.fileExists(path);
    }

    function directoryExists(path) {
        if (!globalThis.NativeAppHost.supports('filesystem')) {
            return Promise.reject();
        }

        return globalThis.NativeFeature.directoryExists(path);
    }

    // wakeonlan feature
    function send(info) {

        if (!globalThis.NativeAppHost.supports('wakeonlan')) {
            return Promise.reject();
        }
        
        globalThis.NativeFeatures.sendPacket(info.BroadcastAddress || "255.255.255.255", info.MacAddress, info.Port);
        return Promise.resolve();
    }

    function isSupported() {
        return globalThis.NativeAppHost.supports('wakeonlan');
    }

    // serverdiscovery feature
    function findServers(timeoutMs) {

        if (!window.ServerDiscovery) {
            window.ServerDiscovery = this;
        }

        if (!globalThis.NativeAppHost.supports('serverlocator')) {
            return Promise.reject();
        }
            
        return globalThis.NativeFeatures.findServersAsync(timeoutMs).then(function(servers) {
            let typedServers = servers.map((e) => JSON.parse(e));
            return Promise.resolve(typedServers);
        });
    }

    // shell feature
    function openUrl(url) {

        if (!globalThis.NativeAppHost.supports('shellopenurl')) {
            window.open(url, '_blank');
        }

        globalThis.NativeFeatures.shellOpenUrl(url);
    };

    function canExec(url) {

        return globalThis.NativeAppHost.supports('shellexec');
    };

    function exec(options) {
        // options.path
        // options.arguments

        if (!globalThis.NativeAppHost.supports('shellexec')) {
            return Promise.reject();
        }

        return globalThis.NativeFeatures.shellExecAsync(options);
    };

    return {
        // filesystem feature
        fileExists: fileExists,
        directoryExists: directoryExists,

        // wakeonlan feature
        send: send,
        isSupported: isSupported,

        // serverdiscovery feature
        findServers: findServers,

        // shell feature
        openUrl: openUrl,
        canExec: canExec,
        exec: exec

    };
});