-- Add voice settings to users and create voice sessions table
ALTER TABLE users ADD COLUMN voice_mode ENUM('vox', 'ptt') DEFAULT 'vox';
ALTER TABLE users ADD COLUMN voice_ptt_key VARCHAR(20) DEFAULT 'v';
ALTER TABLE users ADD COLUMN voice_vox_threshold FLOAT DEFAULT 0.1;

CREATE TABLE IF NOT EXISTS voice_sessions (
    user_id INT PRIMARY KEY,
    channel_id INT NOT NULL,
    joined_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
    FOREIGN KEY (channel_id) REFERENCES channels(id) ON DELETE CASCADE
);