-- supabase/migrations/20260709000006_notifications_audit.sql
CREATE TYPE notification_channel AS ENUM ('email', 'whatsapp', 'in_app');

CREATE TABLE notifications_log (
  id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  incident_id UUID REFERENCES incidents(id),
  capa_id     UUID REFERENCES capa_actions(id),
  channel     notification_channel NOT NULL,
  recipient   TEXT NOT NULL,
  sent_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
  status      TEXT NOT NULL DEFAULT 'sent'
);

CREATE TABLE audit_log (
  id         UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  table_name TEXT NOT NULL,
  record_id  UUID NOT NULL,
  action     TEXT NOT NULL,
  changed_by UUID REFERENCES users(id),
  changed_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  old_value  JSONB,
  new_value  JSONB
);

CREATE INDEX audit_log_table_record_idx ON audit_log(table_name, record_id);
CREATE INDEX audit_log_changed_by_idx   ON audit_log(changed_by);