database.sql

--Database
DROP DATABASE IF EXISTS launchstoredb
CREATE DATABASE launchstoredb

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

CREATE TABLE "users" (
  "id" SERIAL PRIMARY KEY,
  "name" text NOT NULL,
  "email" text UNIQUE 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())
);

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 
);


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

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

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


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


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

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

-- 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;


-- cascade effect 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;

-- create orders(pedidos)
CREATE TABLE "orders" (
  "id" SERIAL PRIMARY KEY,
  "seller_id" INT NOT NULL,
  "buyer_id" INT NOT NULL,
  "product_id" INT NOT NULL,
  "price" INT NOT NULL,
  "quantity" INT DEFAULT 0,
  "total" INT NOT NULL,
  "status" text NOT NULL,
  "created_at" TIMESTAMP DEFAULT (now()),
  "updated_at" TIMESTAMP DEFAULT (now())
);

ALTER TABLE "orders" ADD FOREIGN KEY ("seller_id") REFERENCES "users" ("id");
ALTER TABLE "orders" ADD FOREIGN KEY ("buyer_id") REFERENCES "users" ("id");
ALTER TABLE "orders" ADD FOREIGN KEY ("product_id") REFERENCES "products" ("id");

CREATE TRIGGER set_timestamp
BEFORE UPDATE ON orders
FOR EACH ROW
EXECUTE PROCEDURE trigger_set_timestamp();


-- SOFT DELETE 
-- Criar coluna deleted_at na table products
ALTER TABLE products ADD COLUMN "deleted_at" timestamp;
-- Criar Regra que vai rodas todas as vezes que solicitarmos o Delete
CREATE OR REPLACE RULE delete_product AS 
ON DELETE TO products DO INSTEAD
UPDATE products
SET deleted_at = now()
WHERE products.id = OLD.id;
-- Criar uma VIEW onde vamos puxar somente os dados que estão ativos
CREATE VIEW products_without_deleted AS
SELECT * FROM products WHERE deleted_at IS null;

-- Renomear a nossa VIEW e nosso TABLE
ALTER TABLE products RENAME TO products_with_deleted;
ALTER VIEW products_without_deleted RENAME TO products;

INSERT INTO categories
(name) VALUES ('Eletronicos');

INSERT INTO categories
(name) VALUES ('Esportes');

INSERT INTO categories
(name) VALUES ('Móveis');





-- DO NOT EXECUTE THE COMMANDS BELOW TO START THE APPLICATION, THEY ARE HERE TO WHEN YOU NEED TO RESTART DATA IN THE DATABASE

-- --clean data
-- DELETE FROM products;
-- DELETE FROM users;
-- DELETE FROM files;
-- DELETE FROM categories;
-- DELETE FROM orders;
-- DELETE FROM products_with_deleted;

-- -- restart sequence auto_increment from tables ids
-- ALTER SEQUENCE products_id_seq RESTART WITH 1;
-- ALTER SEQUENCE users_id_seq RESTART WITH 1;
-- ALTER SEQUENCE files_id_seq RESTART WITH 1;
-- ALTER SEQUENCE categories_id_seq RESTART WITH 1;
-- ALTER SEQUENCE orders_id_seq RESTART WITH 1;
-- ALTER SEQUENCE products_with_deleted_id_seq RESTART WITH 1;