-- Create sessions table for Bearer token authentication
CREATE TABLE IF NOT EXISTS sessions (
    id BIGINT AUTO_INCREMENT PRIMARY KEY,
    session_id_hash VARCHAR(255) NOT NULL UNIQUE,
    user_id BIGINT NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    expires_at TIMESTAMP NOT NULL,
    INDEX idx_session_hash (session_id_hash),
    INDEX idx_expires_at (expires_at),
    INDEX idx_user_id (user_id),
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;