From b5bc88c7d441f8d24df70419d7e8e77eaa7f284e Mon Sep 17 00:00:00 2001
From: Ven <vendicated@riseup.net>
Date: Mon, 21 Nov 2022 19:25:40 +0100
Subject: [PATCH] Settings export/import (#235)

---
 src/components/Settings.tsx |  18 ++++++
 src/utils/settingsSync.ts   | 123 ++++++++++++++++++++++++++++++++++++
 2 files changed, 141 insertions(+)
 create mode 100644 src/utils/settingsSync.ts

diff --git a/src/components/Settings.tsx b/src/components/Settings.tsx
index fc2590115..e2abff2e3 100644
--- a/src/components/Settings.tsx
+++ b/src/components/Settings.tsx
@@ -20,6 +20,7 @@ import { useSettings } from "../api/settings";
 import { ChangeList } from "../utils/ChangeList";
 import IpcEvents from "../utils/IpcEvents";
 import { useAwaiter } from "../utils/misc";
+import { downloadSettingsBackup, uploadSettingsBackup } from "../utils/settingsSync";
 import { Alerts, Button, Card, Forms, Margins, Parser, React, Switch } from "../webpack/common";
 import DonateButton from "./DonateButton";
 import ErrorBoundary from "./ErrorBoundary";
@@ -136,6 +137,23 @@ export default ErrorBoundary.wrap(function Settings() {
             >
                 Get notified about new Updates
             </Switch>}
+
+            <Forms.FormDivider />
+            <Forms.FormTitle tag="h5">Settings Sync</Forms.FormTitle>
+            <Flex>
+                <Button
+                    onClick={uploadSettingsBackup}
+                    size={Button.Sizes.SMALL}
+                >
+                    Import Settings
+                </Button>
+                <Button
+                    onClick={downloadSettingsBackup}
+                    size={Button.Sizes.SMALL}
+                >
+                    Export Settings
+                </Button>
+            </Flex>
         </Forms.FormSection >
     );
 }, {
diff --git a/src/utils/settingsSync.ts b/src/utils/settingsSync.ts
new file mode 100644
index 000000000..ecf66652a
--- /dev/null
+++ b/src/utils/settingsSync.ts
@@ -0,0 +1,123 @@
+/*
+ * Vencord, a modification for Discord's desktop app
+ * Copyright (c) 2022 Vendicated and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { Toasts } from "../webpack/common";
+import IpcEvents from "./IpcEvents";
+import Logger from "./Logger";
+
+export async function importSettings(data: string) {
+    try {
+        var parsed = JSON.parse(data);
+    } catch (err) {
+        console.log(data);
+        throw new Error("Failed to parse JSON: " + String(err));
+    }
+
+    if ("settings" in parsed && "quickCss" in parsed) {
+        await VencordNative.ipc.invoke(IpcEvents.SET_SETTINGS, JSON.stringify(parsed.settings, null, 4));
+        await VencordNative.ipc.invoke(IpcEvents.SET_QUICK_CSS, parsed.quickCss);
+    } else
+        throw new Error("Invalid Settings. Is this even a Vencord Settings file?");
+}
+
+export async function exportSettings() {
+    const settings = JSON.parse(VencordNative.ipc.sendSync(IpcEvents.GET_SETTINGS));
+    const quickCss = await VencordNative.ipc.invoke(IpcEvents.GET_QUICK_CSS);
+    return JSON.stringify({ settings, quickCss }, null, 4);
+}
+
+export async function downloadSettingsBackup() {
+    const filename = "vencord-settings-backup.json";
+    const backup = await exportSettings();
+    const data = new TextEncoder().encode(backup);
+
+    if (IS_WEB) {
+        const file = new File([data], filename, { type: "application/json" });
+        const a = document.createElement("a");
+        a.href = URL.createObjectURL(file);
+        a.download = filename;
+
+        document.body.appendChild(a);
+        a.click();
+        setImmediate(() => {
+            URL.revokeObjectURL(a.href);
+            document.body.removeChild(a);
+        });
+    } else {
+        DiscordNative.fileManager.saveWithDialog(data, filename);
+    }
+}
+
+const toastSuccess = () => Toasts.show({
+    type: Toasts.Type.SUCCESS,
+    message: "Settings successfully imported. Restart to apply changes!",
+    id: Toasts.genId()
+});
+
+const toastFailure = (err: any) => Toasts.show({
+    type: Toasts.Type.FAILURE,
+    message: `Failed to import settings: ${String(err)}`,
+    id: Toasts.genId()
+});
+
+export async function uploadSettingsBackup(showToast = true): Promise<void> {
+    if (IS_WEB) {
+        const input = document.createElement("input");
+        input.type = "file";
+        input.style.display = "none";
+        input.accept = "application/json";
+        input.onchange = async () => {
+            const file = input.files?.[0];
+            if (!file) return;
+
+            const reader = new FileReader();
+            reader.onload = async () => {
+                try {
+                    await importSettings(reader.result as string);
+                    if (showToast) toastSuccess();
+                } catch (err) {
+                    new Logger("SettingsSync").error(err);
+                    if (showToast) toastFailure(err);
+                }
+            };
+            reader.readAsText(file);
+        };
+
+        document.body.appendChild(input);
+        input.click();
+        setImmediate(() => document.body.removeChild(input));
+    } else {
+        const [file] = await DiscordNative.fileManager.openFiles({
+            filters: [
+                { name: "Vencord Settings Backup", extensions: ["json"] },
+                { name: "all", extensions: ["*"] }
+            ]
+        });
+
+        if (file) {
+            try {
+                console.log(file);
+                await importSettings(new TextDecoder().decode(file.data));
+                if (showToast) toastSuccess();
+            } catch (err) {
+                new Logger("SettingsSync").error(err);
+                if (showToast) toastFailure(err);
+            }
+        }
+    }
+}