From b759ec45391eebccfede75e3e9a0c285963d507f Mon Sep 17 00:00:00 2001
From: ThatOneCalculator <kainoa@t1c.dev>
Date: Sat, 21 Jan 2023 12:55:38 -0800
Subject: [PATCH] TWA/assetlinks support

---
 .config/example.yml                       |  6 ++++++
 package.json                              |  2 +-
 packages/backend/src/config/types.ts      |  6 ++++++
 packages/backend/src/server/well-known.ts | 16 ++++++++++++++++
 4 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/.config/example.yml b/.config/example.yml
index 29f4a62290..900ac09051 100644
--- a/.config/example.yml
+++ b/.config/example.yml
@@ -145,6 +145,12 @@ id: 'aid'
 #  '127.0.0.1/32'
 #]
 
+# TWA
+#twa:
+#  nameSpace: android_app
+#  packageName: tld.domain.twa
+#  sha256CertFingerprints: ['AB:CD:EF']
+
 # Upload or download file size limits (bytes)
 #maxFileSize: 262144000
 
diff --git a/package.json b/package.json
index b5e3feea07..981c287120 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "calckey",
-	"version": "13.0.8-rc4",
+	"version": "13.0.9-rc",
 	"codename": "aqua",
 	"repository": {
 		"type": "git",
diff --git a/packages/backend/src/config/types.ts b/packages/backend/src/config/types.ts
index 0b9c4e8ba6..e9c42c08f6 100644
--- a/packages/backend/src/config/types.ts
+++ b/packages/backend/src/config/types.ts
@@ -64,6 +64,12 @@ export type Source = {
 	mediaProxy?: string;
 	proxyRemoteFiles?: boolean;
 
+	twa: {
+		nameSpace?: string;
+		packageName?: string;
+		sha256CertFingerprints?: string[];
+	};
+
 	// Managed hosting stuff
 	maxUserSignups?: number;
 	isManagedHosting?: boolean;
diff --git a/packages/backend/src/server/well-known.ts b/packages/backend/src/server/well-known.ts
index 4b839c879d..b617e38091 100644
--- a/packages/backend/src/server/well-known.ts
+++ b/packages/backend/src/server/well-known.ts
@@ -74,6 +74,22 @@ router.get("/.well-known/host-meta.json", async (ctx) => {
 	};
 });
 
+if (config.twa.nameSpace != null) {
+	router.get("/.well-known/assetlinks.json", async (ctx) => {
+		ctx.set("Content-Type", "application/json");
+		ctx.body = [
+			{
+				relation: ["delegate_permission/common.handle_all_urls"],
+				target: {
+					namespace: config.twa.nameSpace,
+					package_name: config.twa.packageName,
+					sha256_cert_fingerprints: config.twa.sha256CertFingerprints,
+				},
+			},
+		];
+	});
+}
+
 router.get("/.well-known/nodeinfo", async (ctx) => {
 	ctx.body = { links };
 });