make migration idempotent

Author: icecrasher321

apps/sim/db/migrations/0086_striped_supreme_intelligence.sql

@@ -1,4 +1,4 @@
-CREATE TABLE "workflow_deployment_version" (
+CREATE TABLE IF NOT EXISTS "workflow_deployment_version" (
 	"id" text PRIMARY KEY NOT NULL,
 	"workflow_id" text NOT NULL,
 	"version" integer NOT NULL,
@@ -8,12 +8,29 @@ CREATE TABLE "workflow_deployment_version" (
 	"created_by" text
 );
 --> statement-breakpoint
-DROP INDEX "workflow_blocks_parent_id_idx";--> statement-breakpoint
-DROP INDEX "workflow_blocks_workflow_parent_idx";--> statement-breakpoint
-ALTER TABLE "workflow_deployment_version" ADD CONSTRAINT "workflow_deployment_version_workflow_id_workflow_id_fk" FOREIGN KEY ("workflow_id") REFERENCES "public"."workflow"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX "workflow_deployment_version_workflow_id_idx" ON "workflow_deployment_version" USING btree ("workflow_id");--> statement-breakpoint
-CREATE UNIQUE INDEX "workflow_deployment_version_workflow_version_unique" ON "workflow_deployment_version" USING btree ("workflow_id","version");--> statement-breakpoint
-CREATE INDEX "workflow_deployment_version_workflow_active_idx" ON "workflow_deployment_version" USING btree ("workflow_id","is_active");--> statement-breakpoint
-CREATE INDEX "workflow_deployment_version_created_at_idx" ON "workflow_deployment_version" USING btree ("created_at");--> statement-breakpoint
-ALTER TABLE "workflow_blocks" DROP COLUMN "parent_id";--> statement-breakpoint
-ALTER TABLE "workflow_blocks" DROP COLUMN "extent";
+DROP INDEX IF EXISTS "workflow_blocks_parent_id_idx";--> statement-breakpoint
+DROP INDEX IF EXISTS "workflow_blocks_workflow_parent_idx";--> statement-breakpoint
+DO $$
+BEGIN
+	IF NOT EXISTS (
+		SELECT 1
+		FROM pg_constraint c
+		WHERE c.conname = 'workflow_deployment_version_workflow_id_workflow_id_fk'
+		AND c.conrelid = 'workflow_deployment_version'::regclass
+	) THEN
+		ALTER TABLE "workflow_deployment_version"
+			ADD CONSTRAINT "workflow_deployment_version_workflow_id_workflow_id_fk"
+			FOREIGN KEY ("workflow_id")
+			REFERENCES "public"."workflow"("id")
+			ON DELETE cascade
+			ON UPDATE no action;
+	END IF;
+END
+$$ LANGUAGE plpgsql;
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "workflow_deployment_version_workflow_id_idx" ON "workflow_deployment_version" USING btree ("workflow_id");--> statement-breakpoint
+CREATE UNIQUE INDEX IF NOT EXISTS "workflow_deployment_version_workflow_version_unique" ON "workflow_deployment_version" USING btree ("workflow_id","version");--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "workflow_deployment_version_workflow_active_idx" ON "workflow_deployment_version" USING btree ("workflow_id","is_active");--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "workflow_deployment_version_created_at_idx" ON "workflow_deployment_version" USING btree ("created_at");--> statement-breakpoint
+ALTER TABLE "workflow_blocks" DROP COLUMN IF EXISTS "parent_id";--> statement-breakpoint
+ALTER TABLE "workflow_blocks" DROP COLUMN IF EXISTS "extent";