CREATE TABLE IF NOT EXISTS drugs_groups (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name_en VARCHAR(255) NOT NULL,
    name_ar VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS drugs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    group_id INT,
    name_en VARCHAR(255) NOT NULL,
    name_ar VARCHAR(255) NOT NULL,
    description_en TEXT,
    description_ar TEXT,
    default_dosage VARCHAR(255),
    default_instructions TEXT,
    price DECIMAL(10, 2) DEFAULT 0.00,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (group_id) REFERENCES drugs_groups(id) ON DELETE SET NULL
);