Add temporary room cards with 7 minute expiry

src/main/kotlin/com/android/trisolarisserver/config/IssuedCardSchemaFix.kt

@@ -0,0 +1,38 @@
+package com.android.trisolarisserver.config
+
+import org.slf4j.LoggerFactory
+import org.springframework.boot.ApplicationArguments
+import org.springframework.boot.ApplicationRunner
+import org.springframework.jdbc.core.JdbcTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class IssuedCardSchemaFix(
+    private val jdbcTemplate: JdbcTemplate
+) : ApplicationRunner {
+
+    private val logger = LoggerFactory.getLogger(IssuedCardSchemaFix::class.java)
+
+    override fun run(args: ApplicationArguments) {
+        val version = jdbcTemplate.queryForObject("select version()", String::class.java) ?: return
+        if (!version.contains("PostgreSQL", ignoreCase = true)) {
+            return
+        }
+
+        val isNullable = jdbcTemplate.queryForObject(
+            """
+            select count(*)
+            from information_schema.columns
+            where table_name = 'issued_card'
+              and column_name = 'room_stay_id'
+              and is_nullable = 'YES'
+            """.trimIndent(),
+            Int::class.java
+        ) ?: 0
+
+        if (isNullable == 0) {
+            logger.info("Dropping NOT NULL on issued_card.room_stay_id")
+            jdbcTemplate.execute("alter table issued_card alter column room_stay_id drop not null")
+        }
+    }
+}