shared: Initial support for using scenarios

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

Author: theimpulson

shared/src/commonMain/kotlin/app/opass/ccip/helpers/PortalHelper.kt

@@ -130,6 +130,26 @@ class PortalHelper {
         }
     }
 
+    /**
+     * Uses Scenario for specified event using given token from event's FastPass feature
+     * @param eventId ID of the event
+     * @param token Token to identify attendee
+     * @param scenarioId ID of the scenario
+     * @return [Attendee] on success, null otherwise
+     */
+    suspend fun useScenario(
+        eventId: String,
+        token: String,
+        scenarioId: String
+    ): Attendee? {
+        val eventConfig = dbHelper.getEventConfig(eventId) ?: return null
+        val feat = eventConfig.features.find { f -> f.type == FeatureType.FAST_PASS } ?: return null
+
+        return client.useScenario(feat.url!!, token, scenarioId).also {
+            dbHelper.addAttendee(eventId, it)
+        }
+    }
+
     /**
      * Deletes an attendee's information from the database
      *

shared/src/commonMain/kotlin/app/opass/ccip/network/PortalClient.kt

@@ -66,4 +66,11 @@ internal class PortalClient {
             if (token != null) parameter("token", token)
         }.body()
     }
+
+    suspend fun useScenario(url: String, token: String, scenarioId: String): Attendee {
+        return universalClient.get {
+            url("$url/use/$scenarioId")
+            parameter("token", token)
+        }.body()
+    }
 }