-- Migration: Unmatch and Block Features
CREATE TABLE IF NOT EXISTS blocked_users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    blocker_id INT NOT NULL,
    blocked_id INT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (blocker_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (blocked_id) REFERENCES users(id) ON DELETE CASCADE,
    UNIQUE KEY unique_block (blocker_id, blocked_id)
);

-- Add status to matches to allow unmatching without deleting history
ALTER TABLE matches ADD COLUMN status ENUM('active', 'unmatched') DEFAULT 'active';