CREATE DATABASE IF NOT EXISTS demo DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
USE demo;

DROP TABLE IF EXISTS order_items;
DROP TABLE IF EXISTS orders;
DROP TABLE IF EXISTS users;

CREATE TABLE users (
  id INT PRIMARY KEY AUTO_INCREMENT,
  name VARCHAR(64) NOT NULL,
  email VARCHAR(128) NULL,
  status TINYINT NOT NULL DEFAULT 1,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE orders (
  id INT PRIMARY KEY AUTO_INCREMENT,
  user_id INT NOT NULL,
  amount DECIMAL(12,2) NOT NULL DEFAULT 0,
  status VARCHAR(16) NOT NULL DEFAULT 'pending',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  INDEX idx_orders_user (user_id)
);

CREATE TABLE order_items (
  id INT PRIMARY KEY AUTO_INCREMENT,
  order_id INT NOT NULL,
  sku VARCHAR(64) NOT NULL,
  qty INT NOT NULL DEFAULT 1,
  price DECIMAL(12,2) NOT NULL DEFAULT 0,
  INDEX idx_items_order (order_id)
);

INSERT INTO users (name, email, status) VALUES
  ('alice', 'alice@demo.local', 1),
  ('bob', 'bob@demo.local', 1),
  ('carol', 'carol@demo.local', 1),
  ('dave', 'dave@demo.local', 0),
  ('erin', 'erin@demo.local', 1);

INSERT INTO orders (user_id, amount, status) VALUES
  (1, 99.50, 'paid'),
  (1, 12.00, 'pending'),
  (2, 250.00, 'paid'),
  (3, 8.80, 'cancelled'),
  (5, 41.20, 'paid');

INSERT INTO order_items (order_id, sku, qty, price) VALUES
  (1, 'SKU-A', 1, 99.50),
  (2, 'SKU-B', 2, 6.00),
  (3, 'SKU-C', 5, 50.00),
  (4, 'SKU-D', 1, 8.80),
  (5, 'SKU-E', 2, 20.60);