Add audit logging for Bewerb changes, implement ZNS B-Satz export, enhance Zeitplan tab with audit log display, export dialog, and clickable Bewerb items, and integrate FixedWidthLineBuilder utility.

core/core-utils/src/commonMain/kotlin/at/mocode/core/utils/parser/FixedWidthParser.kt

@@ -1,6 +1,7 @@
 package at.mocode.core.utils.parser
 
 import kotlinx.datetime.LocalDate
+import kotlinx.datetime.number
 
 /**
  * A simple utility to parse fixed-width strings based on 1-based start positions and lengths.
@@ -61,3 +62,34 @@ class FixedWidthLineReader(private val line: String) {
     }
   }
 }
+
+/**
+ * Utility to build fixed-width lines based on 1-based start positions and lengths.
+ */
+class FixedWidthLineBuilder(length: Int) {
+    private val buffer = CharArray(length) { ' ' }
+
+    fun setString(start1Based: Int, length: Int, value: String?) {
+        if (value == null) return
+        val start0Based = start1Based - 1
+        val v = value.take(length)
+        v.forEachIndexed { index, c ->
+            if (start0Based + index < buffer.size) {
+                buffer[start0Based + index] = c
+            }
+        }
+    }
+
+    fun setInt(start1Based: Int, length: Int, value: Int?) {
+        if (value == null) return
+        setString(start1Based, length, value.toString().padStart(length, '0'))
+    }
+
+    fun setLocalDate(start1Based: Int, value: LocalDate?) {
+        if (value == null) return
+        val str = "${value.year}${value.month.number.toString().padStart(2, '0')}${value.day.toString().padStart(2, '0')}"
+        setString(start1Based, 8, str)
+    }
+
+    override fun toString(): String = buffer.concatToString()
+}

core/core-utils/src/jvmMain/kotlin/at/mocode/core/utils/database/DatabaseFactory.kt

@@ -3,7 +3,7 @@ package at.mocode.core.utils.database
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.jetbrains.exposed.v1.core.Transaction
-import org.jetbrains.exposed.v1.jdbc.transactions.experimental.newSuspendedTransaction
+import org.jetbrains.exposed.v1.jdbc.transactions.suspendTransaction
 
 /**
  * Utility for database operations using Exposed.
@@ -15,7 +15,7 @@ object DatabaseFactory {
    */
   suspend fun <T> dbQuery(block: suspend Transaction.() -> T): T =
     withContext(Dispatchers.IO) {
-      newSuspendedTransaction {
+      suspendTransaction {
         block()
       }
     }

core/zns-parser/src/commonMain/kotlin/at/mocode/zns/parser/ZnsBewerbParser.kt

@@ -1,5 +1,6 @@
 package at.mocode.zns.parser
 
+import at.mocode.core.utils.parser.FixedWidthLineBuilder
 import at.mocode.core.utils.parser.FixedWidthLineReader
 import kotlinx.datetime.LocalDate
 
@@ -70,4 +71,36 @@ object ZnsBewerbParser {
             datum = datum
         )
     }
+
+    /**
+     * Erzeugt eine B-Satz Zeile für die n2-XXXXX.dat Datei.
+     * Verwendet eine Standardlänge von 80 Zeichen.
+     */
+    fun build(bewerb: ZnsBewerb): String {
+        val builder = FixedWidthLineBuilder(80)
+        // Stelle 1: ID (Blank) - Standardmäßig Blank durch Buffer-Initialisierung
+
+        // Stelle 2-3: Bewerbnummer (2-stellig)
+        builder.setInt(2, 2, bewerb.bewerbNummer % 100)
+
+        // Stelle 4: Abteilung
+        builder.setInt(4, 1, bewerb.abteilung)
+
+        // Stelle 5-39: Bewerbname
+        builder.setString(5, 35, bewerb.name)
+
+        // Stelle 40-43: Klasse
+        builder.setString(40, 4, bewerb.klasse)
+
+        // Stelle 44-51: Kategorie
+        builder.setString(44, 8, bewerb.kategorie)
+
+        // Stelle 53-60: Datum (JJJJMMTT) - Achtung: FixedWidthLineReader nutzte 53,8 (1-basiert)
+        builder.setLocalDate(53, bewerb.datum)
+
+        // Stelle 61-63: Bewerbnummer (3-stellig)
+        builder.setInt(61, 3, bewerb.bewerbNummer)
+
+        return builder.toString()
+    }
 }