logging: address review of the SQL logging path

Only downgrade a uniqueness conflict on an INSERT, so genuine duplicate-key failures still surface. Clear old zips from the dump directory before exporting, roll the log file over at midnight, prune on roll/day-change instead of on every line, and drop the unused files-path from the FileProvider config.

app/src/main/kotlin/com/subtracks/log/Log.kt

@@ -108,7 +108,7 @@ object Log {
     fun sql(execution: SqlExecution) {
         val failure = execution.error
         if (failure != null) {
-            if (isUpsertConflict(failure)) {
+            if (isUpsertConflict(execution.sql, failure)) {
                 d("sql", "upsert fallback conflict: ${shortSql(execution.sql)}")
             } else {
                 e("sql", "failed: ${shortSql(execution.sql)}", failure)
@@ -180,16 +180,18 @@ internal fun isSlowQuery(
     thresholdMs: Double,
 ): Boolean = execution.error == null && execution.durationMillis >= thresholdMs && isDataStatement(execution.sql)
 
-// Room's EntityUpsertAdapter implements @Upsert as an INSERT and, on a uniqueness conflict, catches
-// the error and runs an UPDATE instead (EntityUpsertAdapter.checkUniquenessException). That failure
-// is expected control flow, not an error worth alarming about.
+// Room's EntityUpsertAdapter implements @Upsert as an INSERT and treats a uniqueness conflict as the
+// signal to UPDATE instead (EntityUpsertAdapter.checkUniquenessException). Only downgrade a failed
+// INSERT whose error says the conflict was a unique/primary key; anything else stays an ERROR so a
+// genuine failure isn't hidden in release.
 private const val CONSTRAINT_UNIQUE_MESSAGE = "unique constraint failed"
-private const val SQLITE_CONSTRAINT_PRIMARYKEY = "1555"
-private const val SQLITE_CONSTRAINT_UNIQUE = "2067"
+private const val CONSTRAINT_PRIMARY_KEY_MESSAGE = "primary key constraint failed"
 
-internal fun isUpsertConflict(error: Throwable): Boolean {
+internal fun isUpsertConflict(
+    sql: String,
+    error: Throwable,
+): Boolean {
+    if (!sql.trimStart().uppercase().startsWith("INSERT")) return false
     val message = error.message?.lowercase() ?: return false
-    return message.contains(CONSTRAINT_UNIQUE_MESSAGE) ||
-        message.contains(SQLITE_CONSTRAINT_PRIMARYKEY) ||
-        message.contains(SQLITE_CONSTRAINT_UNIQUE)
+    return message.contains(CONSTRAINT_UNIQUE_MESSAGE) || message.contains(CONSTRAINT_PRIMARY_KEY_MESSAGE)
 }

app/src/main/kotlin/com/subtracks/log/LogFileStore.kt

@@ -25,6 +25,10 @@ class LogFileStore(
     private val lineFormat = SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS", Locale.US)
     private var current = currentFile()
 
+    init {
+        prune()
+    }
+
     fun write(
         level: LogLevel,
         tag: String,
@@ -66,6 +70,7 @@ class LogFileStore(
             val logs = files()
             if (logs.isEmpty()) return null
             destDir.mkdirs()
+            destDir.listFiles()?.forEach { if (it.isFile) it.delete() }
             val zip = File(destDir, "subtracks-logs-${System.currentTimeMillis()}.zip")
             ZipOutputStream(zip.outputStream().buffered()).use { out ->
                 logs.forEach { log ->
@@ -100,9 +105,18 @@ class LogFileStore(
                 append('\n')
             }
         rootDir.mkdirs()
-        if (current.length() >= maxFileBytes) roll()
+        var rolled = false
+        val today = currentFile()
+        if (current.name != today.name) {
+            current = today
+            rolled = true
+        }
+        if (current.length() >= maxFileBytes) {
+            roll()
+            rolled = true
+        }
         current.appendText(redactLogs(text))
-        prune()
+        if (rolled) prune()
     }
 
     private var rollSequence = 0

app/src/main/res/xml/file_paths.xml

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <paths>
-    <files-path name="logs" path="logs/" />
     <cache-path name="log_dumps" path="log_dumps/" />
 </paths>

app/src/test/kotlin/com/subtracks/log/LogFileStoreTest.kt

@@ -152,10 +152,21 @@ class LogFileStoreTest {
 
     @Test
     fun detectsUpsertConflictErrors() {
-        assertTrue(isUpsertConflict(IllegalStateException("UNIQUE constraint failed: playback_cursor.id")))
-        assertTrue(isUpsertConflict(IllegalStateException("Error code: 1555, message: UNIQUE constraint failed")))
-        assertTrue(isUpsertConflict(IllegalStateException("SQLITE_CONSTRAINT_UNIQUE 2067")))
-        assertFalse(isUpsertConflict(IllegalStateException("no such table: songs")))
+        assertTrue(
+            isUpsertConflict(
+                "INSERT INTO playback_cursor (id) VALUES (?)",
+                IllegalStateException("UNIQUE constraint failed: playback_cursor.id"),
+            ),
+        )
+        assertTrue(
+            isUpsertConflict(
+                "INSERT OR ABORT INTO t VALUES (?)",
+                IllegalStateException("PRIMARY KEY constraint failed"),
+            ),
+        )
+        assertFalse(isUpsertConflict("UPDATE t SET x = 1", IllegalStateException("UNIQUE constraint failed: t.x")))
+        assertFalse(isUpsertConflict("SELECT * FROM t", IllegalStateException("no such table: t")))
+        assertFalse(isUpsertConflict("INSERT INTO t VALUES (?)", IllegalStateException("Error code: 1555")))
     }
 
     private fun execution(