filter for character list

backend/src/app.ts

@@ -20,14 +20,21 @@ app.get('/api/character/:characterId', async (req, res) => {
 
 app.post('/api/character', jsonParser, async (req, res) => {
   const page = req.body.page
-  const orderBy = req.body.orderBy
+  const orderBy = req.body.orderBy ? obp.parse(req.body.orderBy) : ['id']
   const count = req.body.count
+  const filter = req.body.filter ? fp.parse(req.body.filter) : {}
 
   const characterData = await Character.findAll({
     offset: page * count,
-    limit: count
+    limit: count,
+    order: orderBy,
+    where: filter
   })
-  const pageCount = Math.ceil((await Character.count()) / count)
+  const pageCount = Math.ceil(
+    (await Character.count({
+      where: filter
+    })) / count
+  )
 
   res.setHeader('Content-Type', 'application/json')
   res.json({ characterData, pageCount })