feat: drizzle schema + migrations for products/snapshots/alerts

drizzle/0000_motionless_beast.sql

@@ -0,0 +1,38 @@
+CREATE TABLE "alerts" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"product_id" uuid NOT NULL,
+	"type" text NOT NULL,
+	"config" jsonb NOT NULL,
+	"enabled" boolean DEFAULT true NOT NULL,
+	"last_triggered_at" timestamp with time zone,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "alert_type_check" CHECK ("alerts"."type" in ('target_price','all_time_low','percent_drop'))
+);
+--> statement-breakpoint
+CREATE TABLE "price_snapshots" (
+	"id" bigserial PRIMARY KEY NOT NULL,
+	"product_id" uuid NOT NULL,
+	"price" numeric(10, 2),
+	"currency" text DEFAULT 'EUR' NOT NULL,
+	"availability" text,
+	"error" text,
+	"scraped_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "products" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"url" text NOT NULL,
+	"shop" text NOT NULL,
+	"name" text NOT NULL,
+	"image_url" text,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"enabled" boolean DEFAULT true NOT NULL,
+	"last_scraped_at" timestamp with time zone,
+	"consecutive_failures" integer DEFAULT 0 NOT NULL,
+	CONSTRAINT "products_url_unique" UNIQUE("url"),
+	CONSTRAINT "shop_check" CHECK ("products"."shop" in ('amazon','idealo','geizhals'))
+);
+--> statement-breakpoint
+ALTER TABLE "alerts" ADD CONSTRAINT "alerts_product_id_products_id_fk" FOREIGN KEY ("product_id") REFERENCES "public"."products"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "price_snapshots" ADD CONSTRAINT "price_snapshots_product_id_products_id_fk" FOREIGN KEY ("product_id") REFERENCES "public"."products"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "snapshots_product_scraped_idx" ON "price_snapshots" USING btree ("product_id","scraped_at" DESC NULLS LAST);