posted at for sorting

prisma/migrations/20240414022802_add_timestamp_and_postedat/migration.sql

@@ -0,0 +1,25 @@
+/*
+  Warnings:
+
+  - Added the required column `postedAt` to the `attachments` table without a default value. This is not possible if the table is not empty.
+  - Added the required column `timestamp` to the `memes` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "attachments"
+  ADD COLUMN     "postedAt"
+  TIMESTAMP(3);
+
+UPDATE "attachments"
+  set "postedAt" = TIMESTAMP 'epoch' + ((id >> 22) + 1420070400000) * INTERVAL '1 millisecond';
+
+-- AlterTable
+ALTER TABLE "memes"
+  ADD COLUMN     "postedAt"
+  TIMESTAMP(3);
+
+UPDATE "memes"
+  set "postedAt" = TIMESTAMP 'epoch' + (("attachmentId" >> 22) + 1420070400000) * INTERVAL '1 millisecond';
+
+ALTER TABLE "attachments" ALTER COLUMN "postedAt" SET NOT NULL;
+ALTER TABLE "memes" ALTER COLUMN "postedAt" SET NOT NULL;

prisma/schema.prisma

@@ -27,6 +27,7 @@ model Attachment {
 
     createdAt  DateTime @default(now())
     updatedAt  DateTime @default(now())
+    postedAt   DateTime
 
     @@index([channelId])
     @@map("attachments")
@@ -38,6 +39,12 @@ model Meme {
     text       String
     tags       Json
 
+    // need an timestamp for giving to meili to sort by
+    // i think a usize would actually work but can't
+    // convince the meili-js lib to serialize it properly to json
+    // this one actually has to be .valueOf()'d before we send it
+    // cause js numbers are bigger than postgres int4
+    postedAt   DateTime
     createdAt  DateTime @default(now())
     updatedAt  DateTime @default(now())