Store PayU payment metadata and attempts

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

@@ -0,0 +1,37 @@
+package com.android.trisolarisserver.config
+
+import org.springframework.jdbc.core.JdbcTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class PaymentSchemaFix(
+    private val jdbcTemplate: JdbcTemplate
+) : PostgresSchemaFix(jdbcTemplate) {
+
+    override fun runPostgres(jdbcTemplate: JdbcTemplate) {
+        ensureColumn("payment", "gateway_payment_id", "varchar")
+        ensureColumn("payment", "gateway_txn_id", "varchar")
+        ensureColumn("payment", "bank_ref_num", "varchar")
+        ensureColumn("payment", "mode", "varchar")
+        ensureColumn("payment", "pg_type", "varchar")
+        ensureColumn("payment", "payer_vpa", "varchar")
+        ensureColumn("payment", "payer_name", "varchar")
+        ensureColumn("payment", "payment_source", "varchar")
+    }
+
+    private fun ensureColumn(table: String, column: String, type: String) {
+        val exists = jdbcTemplate.queryForObject(
+            """
+            select count(*)
+            from information_schema.columns
+            where table_name = '$table'
+              and column_name = '$column'
+            """.trimIndent(),
+            Int::class.java
+        ) ?: 0
+        if (exists == 0) {
+            logger.info("Adding $table.$column column")
+            jdbcTemplate.execute("alter table $table add column $column $type")
+        }
+    }
+}