-- Contact Persons Table
CREATE TABLE IF NOT EXISTS contact_persons (
    id INT AUTO_INCREMENT PRIMARY KEY,
    client_id INT NOT NULL,
    first_name VARCHAR(100) NOT NULL,
    last_name VARCHAR(100) NOT NULL,
    email VARCHAR(255),
    phone VARCHAR(50),
    position VARCHAR(100),
    department VARCHAR(100),
    is_primary BOOLEAN DEFAULT FALSE,
    notes TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (client_id) REFERENCES clients(id) ON DELETE CASCADE,
    INDEX idx_client_id (client_id),
    INDEX idx_name (first_name, last_name),
    INDEX idx_email (email)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;