-- Create vouchers table
CREATE TABLE IF NOT EXISTS vouchers (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name VARCHAR(255) NOT NULL,
    email VARCHAR(255),
    phone_number VARCHAR(20),
    voucher_code VARCHAR(50) NOT NULL UNIQUE,
    winner_number INTEGER NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Create index on voucher_code for faster lookups
CREATE INDEX IF NOT EXISTS idx_vouchers_voucher_code ON vouchers(voucher_code);

-- Create index on winner_number for sorting
CREATE INDEX IF NOT EXISTS idx_vouchers_winner_number ON vouchers(winner_number);