CREATE EXTENSION IF NOT EXISTS pgcrypto;

CREATE TABLE IF NOT EXISTS nodes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  name TEXT UNIQUE NOT NULL,
  hostname TEXT NOT NULL,
  is_current BOOLEAN NOT NULL DEFAULT false,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS domains (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  domain TEXT UNIQUE NOT NULL,
  current_node TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'active',
  first_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  last_seen_at TIMESTAMPTZ,
  last_synced_at TIMESTAMPTZ,
  notes TEXT DEFAULT '',
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS mailboxes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  email_address TEXT UNIQUE NOT NULL,
  local_part TEXT NOT NULL,
  domain TEXT NOT NULL REFERENCES domains(domain) ON DELETE CASCADE,
  node_name TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'active',
  used_bytes BIGINT NOT NULL DEFAULT 0,
  usage_scanned_at TIMESTAMPTZ,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  deleted_at TIMESTAMPTZ
);

CREATE TABLE IF NOT EXISTS admin_users (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  email TEXT UNIQUE NOT NULL,
  password_hash TEXT NOT NULL,
  role TEXT NOT NULL DEFAULT 'super_admin',
  allowed_domains TEXT[] NOT NULL DEFAULT '{}',
  active BOOLEAN NOT NULL DEFAULT true,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS audit_log (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  actor_email TEXT,
  action TEXT NOT NULL,
  target_type TEXT NOT NULL,
  target_id TEXT NOT NULL,
  details JSONB NOT NULL DEFAULT '{}',
  ip_address TEXT,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_domains_node ON domains(current_node);
CREATE INDEX IF NOT EXISTS idx_mailboxes_domain ON mailboxes(domain);
CREATE INDEX IF NOT EXISTS idx_audit_created ON audit_log(created_at DESC);