chore: Move avatars using cursor (calcom#14257)

Co-authored-by: Udit Takkar <[email protected]>

packages/prisma/migrations/20240321143215_move_avatars_cols_to_avatar_table/migration.sql

@@ -0,0 +1,49 @@
+DO $$
+DECLARE
+    cur CURSOR FOR SELECT "id", "avatar" FROM "users" WHERE "avatar" IS NOT NULL AND "avatar" != '';
+    rec RECORD;
+    objectKey UUID;
+BEGIN
+    OPEN cur;
+
+    LOOP
+        FETCH cur INTO rec;
+        EXIT WHEN NOT FOUND;
+
+        objectKey := gen_random_uuid();
+
+        BEGIN
+            INSERT INTO "avatars" ("userId", "data", "objectKey", "teamId")
+            VALUES (rec."id", rec."avatar", objectKey, 0)
+            ON CONFLICT ("teamId", "userId", "isBanner") DO NOTHING;
+
+            UPDATE "users"
+            SET "avatarUrl" = '/api/avatar/' || objectKey || '.png'
+            WHERE "id" = rec."id";
+        EXCEPTION WHEN UNIQUE_VIOLATION THEN
+            -- If there's a unique violation error, do nothing.
+        END;
+    END LOOP;
+
+    CLOSE cur;
+END $$;
+
+BEGIN;
+
+WITH inserted_avatars AS (
+    SELECT t."id", t."logo" as "data", gen_random_uuid() AS "objectKey"
+    FROM "Team" t WHERE t."logo" IS NOT NULL AND t."logo" != ''
+),
+inserted AS (
+    INSERT INTO "avatars" ("teamId", "data", "objectKey", "userId")
+    SELECT "id", "data", "objectKey", 0 AS "userId"
+    FROM inserted_avatars
+    ON CONFLICT ("teamId", "userId", "isBanner") DO NOTHING
+    RETURNING "teamId", "objectKey"
+)
+UPDATE "Team" t
+SET "logoUrl" = '/api/avatar/' || i."objectKey" || '.png'
+FROM inserted i
+WHERE t."id" = i."teamId";
+
+COMMIT;