Return sector 3 payload blocks in card prepare

src/main/kotlin/com/android/trisolarisserver/controller/IssuedCards.kt

@@ -74,9 +74,9 @@ class IssuedCards(
             timeData = payload.timeData,
             issuedAt = issuedAt.toString(),
             expiresAt = expiresAt.toString(),
-            issuerUserId = actor.id,
+            sector3Block0 = encodeBlock(actor.name),
-            issuerFirebaseUid = actor.firebaseUid,
+            sector3Block1 = encodeBlock(actor.id?.toString()),
-            issuerName = actor.name
+            sector3Block2 = encodeBlock(null)
         )
     }
 
@@ -183,6 +183,16 @@ class IssuedCards(
         return OffsetDateTime.now(zone)
     }
 
+    private fun encodeBlock(value: String?): String {
+        val raw = (value ?: "").padEnd(16).take(16)
+        val bytes = raw.toByteArray(Charsets.UTF_8)
+        val sb = StringBuilder(bytes.size * 2)
+        for (b in bytes) {
+            sb.append(String.format("%02X", b))
+        }
+        return sb.toString()
+    }
+
     private fun requireMember(propertyId: UUID, principal: MyPrincipal?) {
         if (principal == null) {
             throw ResponseStatusException(HttpStatus.UNAUTHORIZED, "Missing principal")

src/main/kotlin/com/android/trisolarisserver/controller/TemporaryRoomCards.kt

@@ -60,9 +60,9 @@ class TemporaryRoomCards(
             timeData = payload.timeData,
             issuedAt = issuedAt.toString(),
             expiresAt = expiresAt.toString(),
-            issuerUserId = actor.id,
+            sector3Block0 = encodeBlock(actor.name),
-            issuerFirebaseUid = actor.firebaseUid,
+            sector3Block1 = encodeBlock(actor.id?.toString()),
-            issuerName = actor.name
+            sector3Block2 = encodeBlock(null)
         )
     }
 
@@ -114,6 +114,16 @@ class TemporaryRoomCards(
         }
     }
 
+    private fun encodeBlock(value: String?): String {
+        val raw = (value ?: "").padEnd(16).take(16)
+        val bytes = raw.toByteArray(Charsets.UTF_8)
+        val sb = StringBuilder(bytes.size * 2)
+        for (b in bytes) {
+            sb.append(String.format("%02X", b))
+        }
+        return sb.toString()
+    }
+
     private fun nowForProperty(timezone: String?): OffsetDateTime {
         val zone = try {
             if (timezone.isNullOrBlank()) ZoneId.of("Asia/Kolkata") else ZoneId.of(timezone)

src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt

@@ -82,7 +82,7 @@ data class CardPrepareResponse(
     val timeData: String,
     val issuedAt: String,
     val expiresAt: String,
-    val issuerUserId: UUID? = null,
+    val sector3Block0: String? = null,
-    val issuerFirebaseUid: String? = null,
+    val sector3Block1: String? = null,
-    val issuerName: String? = null
+    val sector3Block2: String? = null
 )