Format notification log exports

2026-07-23 09:47:50 +00:00
parent 23aa3282dd
commit 4345ecbf2f
1 changed files with 43 additions and 0 deletions
@@ -0,0 +1,43 @@
+package se.ajpanton.notificationlog.export
+
+import se.ajpanton.notificationlog.model.NotificationLogEntry
+import se.ajpanton.notificationlog.settings.LogField
+import se.ajpanton.notificationlog.settings.LogViewSettings
+import se.ajpanton.notificationlog.settings.TimestampZone
+import java.text.DateFormat
+import java.util.Date
+import java.util.TimeZone
+
+object LogExporter {
+    fun csv(entries: List<NotificationLogEntry>, settings: LogViewSettings): String =
+        rows(entries, settings).joinToString("\n") { row -> row.joinToString(",") { csvValue(it) } }
+
+    fun formatted(entries: List<NotificationLogEntry>, settings: LogViewSettings): String {
+        val rows = rows(entries, settings)
+        val widths = rows.fold(emptyList<Int>()) { current, row -> row.mapIndexed { i, value -> maxOf(current.getOrElse(i) { 0 }, value.length) } }
+        return rows.joinToString("\n") { row -> row.mapIndexed { i, value -> value.padEnd(widths[i]) }.joinToString("  ") }
+    }
+
+    fun html(entries: List<NotificationLogEntry>, settings: LogViewSettings): String = buildString {
+        append("<!doctype html><meta charset=\"utf-8\"><table><thead><tr>")
+        settings.order.filter { it in settings.visibleFields }.forEach { append("<th>${escape(header(it))}</th>") }
+        append("</tr></thead><tbody>")
+        rows(entries, settings).forEach { row -> append("<tr>"); row.forEach { append("<td>${escape(it)}</td>") }; append("</tr>") }
+        append("</tbody></table>")
+    }
+
+    private fun rows(entries: List<NotificationLogEntry>, settings: LogViewSettings) = listOf(
+        settings.order.filter { it in settings.visibleFields }.map(::header),
+    ) + entries.sortedByDescending { it.recordedAtEpochMillis }.map { entry ->
+        settings.order.filter { it in settings.visibleFields }.map { field -> when (field) {
+            LogField.TIMESTAMP -> timestamp(entry.recordedAtEpochMillis, settings.timestampZone)
+            LogField.APP_NAME -> entry.appName; LogField.PACKAGE_NAME -> entry.packageName
+            LogField.ACTION -> entry.action.name.lowercase().replace('_', ' ')
+            LogField.CONTENTS -> entry.contents ?: ""
+        } }
+    }
+    private fun header(field: LogField) = field.name.lowercase().replace('_', ' ')
+    private fun timestamp(value: Long, zone: TimestampZone): String = DateFormat.getDateTimeInstance().apply { if (zone == TimestampZone.UTC) timeZone = TimeZone.getTimeZone("UTC") }.format(Date(value))
+    private fun csvValue(value: String) = "\"${value.replace("\"", "\"\"")}\""
+    private fun escape(value: String) = value.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;").replace("\"", "&quot;")
+}