Add zip export

app/src/main/kotlin/controllers/SettingsController.kt

@@ -7,10 +7,7 @@ import be.simplenotes.domain.security.JwtPayload
 import be.simplenotes.domain.usecases.UserService
 import be.simplenotes.domain.usecases.users.delete.DeleteError
 import be.simplenotes.domain.usecases.users.delete.DeleteForm
-import org.http4k.core.Method
-import org.http4k.core.Request
-import org.http4k.core.Response
-import org.http4k.core.Status
+import org.http4k.core.*
 import org.http4k.core.body.form
 import org.http4k.core.cookie.invalidateCookie
 
@@ -49,18 +46,29 @@ class SettingsController(
         )
     }
 
-    fun export(request: Request, jwtPayload: JwtPayload): Response {
-        val isDownload = request.form("download") != null
-        val json = userService.export(jwtPayload.userId)
-        val res = Response(Status.OK).body(json).header("Content-Type", "application/json")
-        return if (isDownload) res.header(
-            "Content-Disposition",
-            "attachment; filename=\"simplenotes-export-${sanitizeFilename(jwtPayload.username)}.json\""
-        )
-        else res
+    private fun attachment(filename: String, contentType: String) = { response: Response ->
+        val name = filename.replace("[^a-zA-Z0-9-_.]".toRegex(), "_")
+        response
+            .header("Content-Disposition", "attachment; filename=\"$name\"")
+            .header("Content-Type", contentType)
     }
 
-    private fun sanitizeFilename(inputName: String): String = inputName.replace("[^a-zA-Z0-9-_.]".toRegex(), "_")
+    fun export(request: Request, jwtPayload: JwtPayload): Response {
+        val isDownload = request.form("download") != null
+
+        return if (isDownload) {
+            val filename = "simplenotes-export-${jwtPayload.username}"
+            if (request.form("format") == "zip") {
+                val zip = userService.exportAsZip(jwtPayload.userId)
+                Response(Status.OK)
+                    .with(attachment("$filename.zip", "application/zip"))
+                    .body(zip)
+            } else
+                Response(Status.OK)
+                    .with(attachment("$filename.json", "application/json"))
+                    .body(userService.exportAsJson(jwtPayload.userId))
+        } else Response(Status.OK).body(userService.exportAsJson(jwtPayload.userId)).header("Content-Type", "application/json")
+    }
 
     private fun Request.deleteForm(jwtPayload: JwtPayload) =
         DeleteForm(jwtPayload.username, form("password"), form("checked") != null)