Add simple db transaction controller

src/lib/database/index.ts

@@ -1,3 +1,30 @@
 import Database from 'tauri-plugin-sql-api'
+import { dbStateStore } from '$lib/store/dbState'
 
 export const db = await Database.load('sqlite:food.db')
+
+const DBService = {
+	Begin() {
+		dbStateStore.update((state) => {
+			state.transacting = true
+			return state
+		})
+		return db.execute('begin transaction')
+	},
+	Commit() {
+		dbStateStore.update((state) => {
+			state.transacting = false
+			return state
+		})
+		return db.execute('commit')
+	},
+	Rollback() {
+		dbStateStore.update((state) => {
+			state.transacting = false
+			return state
+		})
+		return db.execute('rollback')
+	}
+}
+
+export { DBService }