ai extraction

src/main/kotlin/com/android/trisolarisserver/component/DocumentStorage.kt

@@ -0,0 +1,51 @@
+package com.android.trisolarisserver.component
+
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Component
+import org.springframework.web.multipart.MultipartFile
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.Paths
+import java.util.UUID
+
+@Component
+class DocumentStorage(
+    @Value("\${storage.documents.root:/home/androidlover5842/docs}")
+    private val rootPath: String
+) {
+    fun store(
+        propertyId: UUID,
+        guestId: UUID,
+        bookingId: UUID,
+        file: MultipartFile
+    ): StoredDocument {
+        val safeExt = file.originalFilename?.substringAfterLast('.', "")?.takeIf { it.isNotBlank() }
+        val fileName = buildString {
+            append(UUID.randomUUID().toString())
+            if (safeExt != null) {
+                append('.')
+                append(safeExt.replace(Regex("[^A-Za-z0-9]"), ""))
+            }
+        }
+
+        val dir = Paths.get(rootPath, propertyId.toString(), guestId.toString(), bookingId.toString())
+        Files.createDirectories(dir)
+        val path = dir.resolve(fileName).normalize()
+        file.inputStream.use { input ->
+            Files.copy(input, path)
+        }
+        return StoredDocument(
+            storagePath = path.toString(),
+            originalFilename = file.originalFilename ?: fileName,
+            contentType = file.contentType,
+            sizeBytes = file.size
+        )
+    }
+}
+
+data class StoredDocument(
+    val storagePath: String,
+    val originalFilename: String,
+    val contentType: String?,
+    val sizeBytes: Long
+)