-- ==========================================
-- Switchboard Core — 006 Audit (SQLite)
-- ==========================================

CREATE TABLE IF NOT EXISTS audit_log (
    id              TEXT PRIMARY KEY,
    actor_id        TEXT REFERENCES users(id) ON DELETE SET NULL,
    action          TEXT NOT NULL,
    resource_type   TEXT NOT NULL,
    resource_id     TEXT,
    metadata        TEXT DEFAULT '{}',
    ip_address      TEXT,
    user_agent      TEXT DEFAULT '',
    created_at      TEXT DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_audit_log_created ON audit_log(created_at);
CREATE INDEX IF NOT EXISTS idx_audit_log_actor ON audit_log(actor_id);
CREATE INDEX IF NOT EXISTS idx_audit_log_resource ON audit_log(resource_type, resource_id);
CREATE INDEX IF NOT EXISTS idx_audit_log_action ON audit_log(action);