Add total number of encrypted/validated groups to the keys page

Signed-off-by: Graham <gpe@openrs2.org>

archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt

@@ -9,8 +9,35 @@ import javax.inject.Singleton
 public class KeyExporter @Inject constructor(
     private val database: Database
 ) {
-    public suspend fun count(): Pair<Long, Long> {
+    public data class Stats(
+        val allKeys: Long,
+        val validKeys: Long,
+        val encryptedGroups: Long,
+        val validGroups: Long
+    )
+
+    public suspend fun count(): Stats {
         return database.execute { connection ->
+            val encryptedGroups: Long
+            val validGroups: Long
+
+            connection.prepareStatement(
+                """
+                SELECT
+                    COUNT(*),
+                    COUNT(*) FILTER (WHERE c.key_id IS NOT NULL)
+                FROM containers c
+                WHERE c.encrypted
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.executeQuery().use { rows ->
+                    check(rows.next())
+
+                    encryptedGroups = rows.getLong(1)
+                    validGroups = rows.getLong(2)
+                }
+            }
+
             connection.prepareStatement(
                 """
                 SELECT
@@ -23,9 +50,9 @@ public class KeyExporter @Inject constructor(
                 stmt.executeQuery().use { rows ->
                     check(rows.next())
 
-                    val all = rows.getLong(1)
-                    val valid = rows.getLong(2)
-                    Pair(all, valid)
+                    val allKeys = rows.getLong(1)
+                    val validKeys = rows.getLong(2)
+                    Stats(allKeys, validKeys, encryptedGroups, validGroups)
                 }
             }
         }

archive/src/main/kotlin/org/openrs2/archive/web/KeysController.kt

@@ -12,8 +12,8 @@ public class KeysController @Inject constructor(
     private val exporter: KeyExporter
 ) {
     public suspend fun index(call: ApplicationCall) {
-        val (all, valid) = exporter.count()
-        call.respond(ThymeleafContent("keys/index.html", mapOf("all" to all, "valid" to valid)))
+        val stats = exporter.count()
+        call.respond(ThymeleafContent("keys/index.html", mapOf("stats" to stats)))
     }
 
     public suspend fun exportAll(call: ApplicationCall) {

archive/src/main/resources/org/openrs2/archive/templates/keys/index.html

@@ -11,10 +11,21 @@
 		<nav th:replace="layout.html :: nav(active='keys')"></nav>
 		<main class="container">
 			<h1>Keys</h1>
+			<!--/*@thymesVar id="stats" type="org.openrs2.archive.key.KeyExporter.Stats"*/-->
 			<p>
-				There are <strong th:text="${#numbers.formatInteger(all, 1, 'COMMA')}">0</strong> candidate keys in
-				the database, of which <strong th:text="${#numbers.formatInteger(valid, 1, 'COMMA')}">0</strong> have
-				been validated against at least one encrypted group.
+				There are
+				<strong th:text="${#numbers.formatInteger(stats.allKeys, 1, 'COMMA')}">0</strong>
+				candidate keys in the database, of which
+				<strong th:text="${#numbers.formatInteger(stats.validKeys, 1, 'COMMA')}">0</strong>
+				have been validated against at least one encrypted group.
+			</p>
+			<p>
+				There are
+				<strong th:text="${#numbers.formatInteger(stats.encryptedGroups, 1, 'COMMA')}">0</strong>
+				encrypted groups in the database, of which
+				<strong th:text="${#numbers.formatInteger(stats.validGroups, 1, 'COMMA')}">0</strong>
+				have a validated key. This is equal to the total number of
+				validated keys if and only if keys are not re-used.
 			</p>
 			<h2>Download</h2>
 			<p>