-- BackPRO SEMSTORM metrics history
ALTER TABLE sites
    ADD COLUMN semstorm_domain VARCHAR(255) NULL AFTER url;

CREATE TABLE IF NOT EXISTS site_seo_metrics (
    id INT AUTO_INCREMENT PRIMARY KEY,
    site_id INT NOT NULL,
    metric_month DATE NOT NULL,
    top3 INT NOT NULL DEFAULT 0,
    top10 INT NOT NULL DEFAULT 0,
    top20 INT NOT NULL DEFAULT 0,
    top50 INT NOT NULL DEFAULT 0,
    traffic INT NOT NULL DEFAULT 0,
    source_payload TEXT NULL,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (site_id) REFERENCES sites(id) ON DELETE CASCADE,
    UNIQUE KEY uniq_site_month (site_id, metric_month),
    INDEX idx_site_month (site_id, metric_month)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;