database.sql

CREATE TABLE "products" (
  "id" SERIAL PRIMARY KEY,
  "category_id" int NOT NULL,
  "user_id" int,
  "name" text NOT NULL,
  "description" text NOT NULL,
  "old_price" int,
  "price" int NOT NULL,
  "quantity" int DEFAULT 0,
  "status" int DEFAULT 1,
  "created_at" timestamp DEFAULT (now()),
  "updated_at" timestamp DEFAULT (now())
);

CREATE TABLE "categories" (
  "id" SERIAL PRIMARY KEY,
  "name" text NOT NULL
);

CREATE TABLE "files" (
  "id" SERIAL PRIMARY KEY,
  "name" text,
  "path" text NOT NULL,
  "product_id" int
);

ALTER TABLE "products" ADD FOREIGN KEY ("category_id") REFERENCES "categories" ("id");

ALTER TABLE "files" ADD FOREIGN KEY ("product_id") REFERENCES "products" ("id");

CREATE TABLE "users" (
  "id" SERIAL PRIMARY KEY,
  "name" text UNIQUE  NOT NULL,
  "email" text NOT NULL,
  "password" text NOT NULL,
  "cpf_cnpj" text UNIQUE NOT NULL,
  "cep" text,
  "address" text,
  "created_at" timestamp DEFAULT (now()),
  "updated_at" timestamp DEFAULT (now())
);

-- Foreign Key 
ALTER TABLE "products" ADD FOREIGN KEY ("user_id") REFERENCES "users" ("id")

-- create procedure
CREATE FUNCTION trigger_set_timestamp()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = NOW();
  RETURN NEW
END;
$$ LANGUAGE plpgsql;

-- connect pg simple table
CREATE TABLE "session" (
  "sid" varchar NOT NULL COLLATE "default",
	"sess" json NOT NULL,
	"expire" timestamp(6) NOT NULL
)
WITH (OIDS=FALSE);
ALTER TABLE "session" ADD CONSTRAINT "session_pkey" PRIMARY KEY ("sid") NOT DEFERRABLE INITIALLY IMMEDIATE;
CREATE INDEX "IDX_session_expire" ON "session" ("expire");

-- token password recovery
ALTER TABLE "users" ADD COLUMN reset_token text;
ALTER  TABLE "users" ADD COLUMN reset_token_expires text;

--auto updated_at products
CREATE TRIGGER set_timestamp
BEFORE UPDATE ON products 
FOR EACH ROW
EXECUTE PROCEDURE trigger_set_timestamp();

--auto updated_at users
CREATE TRIGGER set_timestamp
BEFORE UPDATE ON users 
FOR EACH ROW
EXECUTE PROCEDURE trigger_set_timestamp();


-- cascade efect when delete users 

ALTER TABLE "products"
DROP CONSTRAINT products_user_id_fkey
ADD CONSTRAINT products_user_id_fkey
FOREIGN KEY ("user_id")
REFERENCES "users" ("id")
ON DELETE CASCADE;

ALTER TABLE "files"
DROP CONSTRAINT files_product_id_fkey
ADD CONSTRAINT files_product_id_fkey
FOREIGN KEY ("product_id")
REFERENCES "products" ("id")
ON DELETE CASCADE