CREATE TYPE public.membership_role AS ENUM ('owner', 'admin', 'member', 'viewer');

CREATE TABLE public.profiles (
	id uuid PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE,
	email text NOT NULL,
	display_name text,
	created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE public.tenants (
	id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
	name text NOT NULL,
	slug text NOT NULL,
	status text NOT NULL DEFAULT 'active',
	created_at timestamptz NOT NULL DEFAULT now(),
	CONSTRAINT tenants_slug_format_check CHECK (slug ~ '^[a-z0-9]([a-z0-9-]*[a-z0-9])?$'),
	CONSTRAINT tenants_status_check CHECK (status IN ('active', 'suspended'))
);

CREATE UNIQUE INDEX tenants_slug_key ON public.tenants (slug);

CREATE TABLE public.memberships (
	profile_id uuid NOT NULL REFERENCES public.profiles(id) ON DELETE CASCADE,
	tenant_id uuid NOT NULL REFERENCES public.tenants(id) ON DELETE CASCADE,
	role public.membership_role NOT NULL DEFAULT 'member',
	created_at timestamptz NOT NULL DEFAULT now(),
	PRIMARY KEY (profile_id, tenant_id)
);

CREATE INDEX memberships_tenant_id_idx ON public.memberships (tenant_id);
CREATE INDEX memberships_profile_id_idx ON public.memberships (profile_id);