CREATE TABLE company (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    active BOOLEAN NOT NULL DEFAULT TRUE,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE employee (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    company_id BIGINT NOT NULL,
    first_name VARCHAR(255) NOT NULL,
    last_name VARCHAR(255) NOT NULL,
    active BOOLEAN NOT NULL DEFAULT TRUE,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_employee_company FOREIGN KEY (company_id) REFERENCES company(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE product (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    price_cents INT NOT NULL DEFAULT 0,
    icon_placeholder VARCHAR(50) DEFAULT 'coffee',
    active BOOLEAN NOT NULL DEFAULT TRUE,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE tally_entry (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    employee_id BIGINT NOT NULL,
    product_id BIGINT NOT NULL,
    month_key VARCHAR(7) NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_tally_employee FOREIGN KEY (employee_id) REFERENCES employee(id),
    CONSTRAINT fk_tally_product FOREIGN KEY (product_id) REFERENCES product(id),
    INDEX idx_tally_month (month_key),
    INDEX idx_tally_employee_month (employee_id, month_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE access_link (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    token VARCHAR(64) NOT NULL UNIQUE,
    role VARCHAR(20) NOT NULL,
    company_id BIGINT,
    description VARCHAR(255),
    active BOOLEAN NOT NULL DEFAULT TRUE,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_access_link_company FOREIGN KEY (company_id) REFERENCES company(id),
    CONSTRAINT chk_role CHECK (role IN ('COMPANY_ADMIN', 'PROVIDER_ADMIN'))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;