pack and upload

app/build.gradle

@@ -65,4 +65,53 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation "org.jetbrains.kotlin:kotlin-stdlib:1.9.22"
     implementation 'androidx.webkit:webkit:1.8.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.7.3'
+    // JSONObject is provided by Android SDK (org.json)
+}
+
+// Task: package webapp assets into a zip for release and optionally upload
+def webappSrc = file("src/main/assets")
+def webappZip = file("${buildDir}/outputs/webapp/webapp.zip")
+
+tasks.register("zipWebApp") {
+    group = "release"
+    description = "Create zip of web assets (app/src/main/assets -> webapp.zip)"
+    inputs.dir(webappSrc)
+    outputs.file(webappZip)
+    doLast {
+        webappZip.parentFile.mkdirs()
+        ant.zip(destfile: webappZip) {
+            fileset(dir: webappSrc)
+        }
+        println "Created webapp zip: ${webappZip.absolutePath}"
+    }
+}
+
+tasks.register("uploadWebApp") {
+    group = "release"
+    description = "Upload webapp zip to remote server if UPLOAD_WEBAPP_URL is set"
+    dependsOn "zipWebApp"
+    doLast {
+        def uploadUrl = System.getenv('UPLOAD_WEBAPP_URL')
+        def token = System.getenv('UPLOAD_WEBAPP_TOKEN')
+        if (!uploadUrl) {
+            println "UPLOAD_WEBAPP_URL not set, skipping upload"
+            return
+        }
+        if (!webappZip.exists()) {
+            throw new GradleException("webapp zip not found: ${webappZip}")
+        }
+        println "Uploading webapp to ${uploadUrl}"
+        def cmd = ["curl", "--fail", "-X", "PUT", "-H", "Content-Type: application/zip"]
+        if (token) {
+            cmd += ["-H", "Authorization: Bearer ${token}"]
+        }
+        cmd += ["--data-binary", "@${webappZip.absolutePath}", uploadUrl]
+        def process = cmd.execute()
+        process.in.eachLine { println it }
+        process.err.eachLine { System.err.println it }
+        def rc = process.waitFor()
+        if (rc != 0) throw new GradleException("Upload failed with exit code ${rc}")
+        println "Upload successful"
+    }
 }