//
// snapshot.js
//
// Created by David Kelly on 1 August 2016
// Copyright 2016 High Fidelity, Inc
//
// Distributed under the Apache License, Version 2.0
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

(function() { // BEGIN LOCAL_SCOPE

var SNAPSHOT_DELAY = 500; // 500ms
var toolBar = Toolbars.getToolbar("com.highfidelity.interface.toolbar.system");
var resetOverlays;
var reticleVisible;
var button = toolBar.addButton({
    objectName: "snapshot",
    imageURL: Script.resolvePath("assets/images/tools/snap.svg"),
    visible: true,
    buttonState: 1,
    defaultState: 1,
    hoverState: 2,
    alpha: 0.9,
});

function shouldOpenFeedAfterShare() {
    var persisted = Settings.getValue('openFeedAfterShare', true); // might answer true, false, "true", or "false"
    return persisted && (persisted !== 'false');
}
function showFeedWindow() {
    DialogsManager.showFeed();
}

var SNAPSHOT_REVIEW_URL = Script.resolvePath("html/SnapshotReview.html");

var outstanding;
function confirmShare(data) {
    var dialog = new OverlayWebWindow('Snapshot Review', SNAPSHOT_REVIEW_URL, 800, 320);
    function onMessage(message) {
        // Receives message from the html dialog via the qwebchannel EventBridge. This is complicated by the following:
        // 1. Although we can send POJOs, we cannot receive a toplevel object. (Arrays of POJOs are fine, though.)
        // 2. Although we currently use a single image, we would like to take snapshot, a selfie, a 360 etc. all at the
        //    same time, show the user all of them, and have the user deselect any that they do not want to share.
        //    So we'll ultimately be receiving a set of objects, perhaps with different post processing for each.
        var isLoggedIn;
        var needsLogin = false;
        switch (message) {
            case 'ready':
                dialog.emitScriptEvent(data); // Send it.
                outstanding = 0;
                break;
            case 'openSettings':
                Desktop.show("hifi/dialogs/GeneralPreferencesDialog.qml", "GeneralPreferencesDialog");
                break;
            case 'setOpenFeedFalse':
                Settings.setValue('openFeedAfterShare', false)
                break;
            case 'setOpenFeedTrue':
                Settings.setValue('openFeedAfterShare', true)
                break;
            default:
                dialog.webEventReceived.disconnect(onMessage);
                dialog.close();
                isLoggedIn = Account.isLoggedIn();
                message.forEach(function (submessage) {
                    if (submessage.share && !isLoggedIn) {
                        needsLogin = true;
                        submessage.share = false;
                    }
                    if (submessage.share) {
                        print('sharing', submessage.localPath);
                        outstanding++;
                        Window.shareSnapshot(submessage.localPath);
                    } else {
                        print('not sharing', submessage.localPath);
                    }
                });
                if (!outstanding && shouldOpenFeedAfterShare()) {
                    showFeedWindow();
                }
                if (needsLogin) { // after the possible feed, so that the login is on top
                    Account.checkAndSignalForAccessToken();
                }
        }
    }
    dialog.webEventReceived.connect(onMessage);
    dialog.raise();
}

function snapshotShared(errorMessage) {
    if (!errorMessage) {
        print('snapshot uploaded and shared');
    } else {
        print(errorMessage);
    }
    if ((--outstanding <= 0) && shouldOpenFeedAfterShare()) {
        showFeedWindow();
    }
}

function onClicked() {
    // update button states
    resetOverlays = Menu.isOptionChecked("Overlays");
    reticleVisible = Reticle.visible;
    Reticle.visible = false;
    Window.snapshotTaken.connect(resetButtons);
    
    button.writeProperty("buttonState", 0);
    button.writeProperty("defaultState", 0);
    button.writeProperty("hoverState", 2);
     
    // hide overlays if they are on
    if (resetOverlays) {
        Menu.setIsOptionChecked("Overlays", false);
    }
    
    // hide hud
    toolBar.writeProperty("visible", false);

    // take snapshot (with no notification)
    Script.setTimeout(function () {
        Window.takeSnapshot(false, 1.91);
    }, SNAPSHOT_DELAY);
}

function resetButtons(path, notify) {
    // show overlays if they were on
    if (resetOverlays) {
        Menu.setIsOptionChecked("Overlays", true); 
    }
    // show hud
    toolBar.writeProperty("visible", true);
    Reticle.visible = reticleVisible;
    
    // update button states
    button.writeProperty("buttonState", 1);
    button.writeProperty("defaultState", 1);
    button.writeProperty("hoverState", 3);
    Window.snapshotTaken.disconnect(resetButtons);

    // last element in data array tells dialog whether we can share or not
    confirmShare([ 
        { localPath: path },
        {
            canShare: !!location.placename,
            openFeedAfterShare: shouldOpenFeedAfterShare()
        }
    ]);
 }

button.clicked.connect(onClicked);
Window.snapshotShared.connect(snapshotShared);

Script.scriptEnding.connect(function () {
    toolBar.removeButton("snapshot");
    button.clicked.disconnect(onClicked);
    Window.snapshotShared.disconnect(snapshotShared);
});

}()); // END LOCAL_SCOPE