From 125b2568bbeb12f050cfb76b94e84232a6cc8cd5 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Sat, 30 Oct 2021 13:59:34 +0200
Subject: Try out sqlite's user_version pragma

I will not use it because the pragma does not appear in a .dump,
therefore complicating backup and restore procedure
---
 src/database.nim | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/database.nim b/src/database.nim
index 37ef8b4..3657fab 100644
--- a/src/database.nim
+++ b/src/database.nim
@@ -1,4 +1,4 @@
-import std / [options, times]
+import std / [options, strformat, times]
 
 import tiny_sqlite
 import uuids
@@ -7,9 +7,6 @@ import dbUtils
 
 const migrations = [
   """
-  CREATE TABLE schema_version (
-    version INTEGER NOT NULL
-  );
   CREATE TABLE url (
     id INTEGER PRIMARY KEY,
     token TEXT NOT NULL UNIQUE,
@@ -26,7 +23,7 @@ const latestVersion = migrations.len
 proc Migrate*(db: DbConn): bool {.raises: [].} =
   var currentVersion: int
   try:
-    currentVersion = db.value("SELECT version FROM schema_version;").get().fromDbValue(int)
+    currentVersion = db.value("PRAGMA user_version").get().fromDbValue(int)
   except SqliteError:
     discard
   if currentVersion != latestVersion:
@@ -34,9 +31,8 @@ proc Migrate*(db: DbConn): bool {.raises: [].} =
       db.exec("BEGIN")
       for v in currentVersion..<latestVersion:
         db.execScript(migrations[v])
-      db.exec("DELETE FROM schema_version;")
-      db.exec("INSERT INTO schema_version (version) VALUES (?);", latestVersion)
-      db.exec("COMMIT;")
+      db.exec(&"PRAGMA user_version={latestVersion}")
+      db.exec("COMMIT")
     except:
       let msg = getCurrentExceptionMsg()
       echo msg
-- 
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