CREATE TABLE IF NOT EXISTS settings (
    setting_key VARCHAR(255) NOT NULL,
    setting_value VARCHAR(255),
    PRIMARY KEY (setting_key)
);

CREATE TABLE IF NOT EXISTS users (
    user_id INT NOT NULL AUTO_INCREMENT,
    display_name VARCHAR(255),
    email VARCHAR(255) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    salt VARCHAR(255) NOT NULL,
    is_admin BOOLEAN,
    PRIMARY KEY (user_id)
);

CREATE TABLE IF NOT EXISTS user_sessions (
    session_id VARCHAR(255) NOT NULL,
    salt VARCHAR(255) NOT NULL,
    user_id INT NOT NULL,
    expiry DATETIME NOT NULL,
    PRIMARY KEY (session_id),
    FOREIGN KEY (user_id) REFERENCES users(user_id)
);

CREATE TABLE IF NOT EXISTS locations (
    location_id INT NOT NULL AUTO_INCREMENT,
    name VARCHAR(255) NOT NULL,
    logo BLOB,
    PRIMARY KEY (location_id)
);

CREATE TABLE IF NOT EXISTS permissions (
    user_id INT NOT NULL,
    location_id INT NOT NULL,
    is_owner BOOLEAN,
    PRIMARY KEY (user_id, location_id),
    FOREIGN KEY (user_id) REFERENCES users(user_id),
    FOREIGN KEY (location_id) REFERENCES locations(location_id)
);

CREATE TABLE IF NOT EXISTS visits (
    visit_id INT NOT NULL AUTO_INCREMENT,
    location_id INT NOT NULL,
    arrival DATETIME NOT NULL,
    departure DATETIME NOT NULL,
    PRIMARY KEY (visit_id),
    FOREIGN KEY (location_id) REFERENCES locations(location_id)
);

CREATE TABLE IF NOT EXISTS visitors (
    visitor_id INT NOT NULL AUTO_INCREMENT,
    visit_id INT NOT NULL,
    first_name VARCHAR(255) NOT NULL,
    last_name VARCHAR(255) NOT NULL,
    address1 VARCHAR(255),
    address2 VARCHAR(255),
    zip VARCHAR(255),
    city VARCHAR(255),
    country VARCHAR(255),
    phone VARCHAR(255),
    email VARCHAR(255),
    PRIMARY KEY (visitor_id),
    FOREIGN KEY (visit_id) REFERENCES visits(visit_id)
);