fix: Wrong event URL is being shared (#1832)

Author: liveHarshit

app/build.gradle

@@ -37,11 +37,13 @@ android {
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             buildConfigField "String", "DEFAULT_BASE_URL", '"https://api.eventyay.com/v1/"'
+            buildConfigField "String", "FRONTEND_URL", '"https://eventyay.com/e/"'
             buildConfigField "String", "MAPBOX_KEY", '"'+MAPBOX_KEY+'"'
             buildConfigField "String", "STRIPE_API_KEY", '"'+STRIPE_API_TOKEN+'"'
         }
         debug {
             buildConfigField "String", "DEFAULT_BASE_URL", '"https://open-event-api-dev.herokuapp.com/v1/"'
+            buildConfigField "String", "FRONTEND_URL", '"https://fossasia.github.io/open-event-frontend/e/"'
             buildConfigField "String", "MAPBOX_KEY", '"'+MAPBOX_KEY+'"'
             buildConfigField "String", "STRIPE_API_KEY", '"'+STRIPE_API_TOKEN+'"'
         }

app/src/main/java/org/fossasia/openevent/general/event/EventUtils.kt

@@ -33,12 +33,11 @@ object EventUtils {
 
     private val timeFormat: DateTimeFormatter = DateTimeFormatter.ofPattern("hh:mm a")
     private val dateFormat: DateTimeFormatter = DateTimeFormatter.ofPattern("dd MMM yyyy")
-    private const val frontendUrl = "https://open-event-frontend-dev.herokuapp.com/e/"
 
     fun getSharableInfo(event: Event, resource: Resource = sharedResource): String {
         val description = event.description.nullToEmpty()
         val identifier = event.identifier
-        val eventUrl = frontendUrl + identifier
+        val eventUrl = BuildConfig.FRONTEND_URL + identifier
 
         val message = StringBuilder()