♻️ Update how we store poll status (#957)

packages/database/prisma/migrations/20231205043530_poll_status/migration.sql

@@ -0,0 +1,50 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `demo` on the `polls` table. All the data in the column will be lost.
+  - You are about to drop the column `legacy` on the `polls` table. All the data in the column will be lost.
+  - A unique constraint covering the columns `[event_id]` on the table `polls` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateEnum
+CREATE TYPE "poll_status" AS ENUM ('live', 'paused', 'finalized');
+
+-- AlterTable
+ALTER TABLE "polls" DROP COLUMN "demo",
+DROP COLUMN "legacy",
+ADD COLUMN     "status" "poll_status";
+
+-- CreateIndex
+CREATE UNIQUE INDEX "polls_event_id_key" ON "polls"("event_id");
+
+-- Fix an issue where the "event_id" column was not being set
+UPDATE "polls"
+SET "event_id" = "events"."id"
+FROM "events"
+WHERE "events"."poll_id" = "polls"."id";
+
+-- Set the "status" column to corressponding enum value
+-- If "closed" is true, set to "paused"
+-- If a poll has an "event_id", set to "finalized"
+-- If a poll has a "deletedAt" date, set to "deleted"
+-- Otherwise set to "live"
+UPDATE "polls"
+SET "status" = CASE
+  WHEN "closed" = true THEN 'paused'::poll_status
+  WHEN "event_id" IS NOT NULL THEN 'finalized'::poll_status
+  ELSE 'live'::poll_status
+END;
+
+-- Make the "status" column non-nullable and default to "live"
+ALTER TABLE "polls"
+ALTER COLUMN "status" SET NOT NULL,
+ALTER COLUMN "status" SET DEFAULT 'live';
+
+
+DROP INDEX "events_poll_id_idx";
+
+-- DropIndex
+DROP INDEX "events_poll_id_key";
+
+-- AlterTable
+ALTER TABLE "events" DROP COLUMN "poll_id";