deeplink.gradle

android.applicationVariants.all { variant ->
    variant.outputs.all { output ->
        output.processManifest.doLast {
            def placeholders = variant.mergedFlavor.manifestPlaceholders;
            if (placeholders == null || placeholders.isEmpty()) {
                return
            }

            def buildType = "${variant.getFlavorName()}${variant.buildType.name.capitalize()}"
            String manifestDir = "build/intermediates/merged_manifests/$buildType"
            String manifestFilePath = "$manifestDir/AndroidManifest.xml"
            def link = manifestFilePath
            link = link.replace("merged_manifests", "bundle_manifest")

            try {
                writeManifest(manifestFilePath, placeholders)
                writeManifest(link, placeholders)
            } catch (Exception e) {
                println "Error while writing deep link into manifest"
            }

        }
    }
}

def writeManifest(String manifestPath, HashMap placeholders) {
    def manifestContent = file(manifestPath).getText()
    placeholders.each { key, value ->
        if (key.equals("deepLinks_manifestPlaceholder")) {
            Pattern pattern = Pattern.compile(Pattern.quote("deepLinks_manifestPlaceholder"), Pattern.DOTALL);
            manifestContent = pattern.matcher(manifestContent).replaceAll(value);
        }
    }
    file(manifestPath).write(manifestContent)
}