-- =============================================================================
-- Migration: 20260420000001_patient_intake_invite_info_rpc
-- A#31 — RPC read-only de lookup público do terapeuta/clínica a partir do
-- token do patient_invite. Consumida pela edge function get-intake-invite-info
-- para alimentar o "hero header" da página /cadastro/paciente.
--
-- Segurança:
--   • SECURITY DEFINER (ignora RLS de profiles/company_profiles)
--   • Valida token: existe, ativo, não-expirado, dentro do max_uses
--   • Retorna APENAS campos explicitamente seguros (não-sensíveis)
--   • Execute revogado de PUBLIC/anon; grantado só para service_role (edge)
--     e authenticated (usos internos futuros)
--
-- Payload devolvido:
--   { ok: true, info: { therapist: {...}, clinic: {...}|null } }
--   { error: 'invalid-token' }  — token inválido/expirado/esgotado
--   { error: 'missing-token' }  — input vazio
-- =============================================================================

CREATE OR REPLACE FUNCTION public.get_patient_intake_invite_info(p_token text)
RETURNS jsonb
LANGUAGE plpgsql
SECURITY DEFINER
SET search_path = public, pg_temp
AS $$
DECLARE
    v_token_clean text;
    v_invite      RECORD;
    v_result      jsonb;
BEGIN
    v_token_clean := nullif(trim(coalesce(p_token, '')), '');
    IF v_token_clean IS NULL THEN
        RETURN jsonb_build_object('error', 'missing-token');
    END IF;

    SELECT pi.owner_id, pi.tenant_id, pi.active, pi.expires_at, pi.max_uses, pi.uses
      INTO v_invite
      FROM public.patient_invites pi
     WHERE pi.token = v_token_clean
     LIMIT 1;

    IF v_invite.owner_id IS NULL THEN
        RETURN jsonb_build_object('error', 'invalid-token');
    END IF;

    IF v_invite.active IS DISTINCT FROM true THEN
        RETURN jsonb_build_object('error', 'invalid-token');
    END IF;

    IF v_invite.expires_at IS NOT NULL AND v_invite.expires_at < now() THEN
        RETURN jsonb_build_object('error', 'invalid-token');
    END IF;

    IF v_invite.max_uses IS NOT NULL AND v_invite.uses >= v_invite.max_uses THEN
        RETURN jsonb_build_object('error', 'invalid-token');
    END IF;

    SELECT jsonb_build_object(
        'therapist', jsonb_build_object(
            'display_name',      coalesce(
                                     nullif(trim(p.full_name), ''),
                                     nullif(trim(p.nickname), ''),
                                     'Profissional'
                                 ),
            'avatar_url',        nullif(trim(coalesce(p.avatar_url, '')), ''),
            'work_description',  nullif(trim(coalesce(p.work_description, '')), ''),
            'bio',               nullif(trim(coalesce(p.bio, '')), ''),
            'phone',             nullif(trim(coalesce(p.phone, '')), ''),
            'site_url',          nullif(trim(coalesce(p.site_url, '')), ''),
            'instagram',         nullif(trim(coalesce(p.social_instagram, '')), '')
        ),
        'clinic', CASE
            WHEN cp.tenant_id IS NOT NULL THEN jsonb_build_object(
                'name',       nullif(trim(coalesce(cp.nome_fantasia, '')), ''),
                'logo_url',   nullif(trim(coalesce(cp.logo_url, '')), ''),
                'email',      nullif(trim(coalesce(cp.email, '')), ''),
                'phone',      nullif(trim(coalesce(cp.telefone, '')), ''),
                'site',       nullif(trim(coalesce(cp.site, '')), ''),
                'city',       nullif(trim(coalesce(cp.cidade, '')), ''),
                'state',      nullif(trim(coalesce(cp.estado, '')), ''),
                'neighborhood', nullif(trim(coalesce(cp.bairro, '')), ''),
                'street',     nullif(trim(coalesce(cp.logradouro, '')), ''),
                'number',     nullif(trim(coalesce(cp.numero, '')), ''),
                'social',     coalesce(cp.redes_sociais, '[]'::jsonb)
            )
            ELSE NULL
        END
    )
    INTO v_result
    FROM public.profiles p
    LEFT JOIN public.company_profiles cp ON cp.tenant_id = v_invite.tenant_id
    WHERE p.id = v_invite.owner_id
    LIMIT 1;

    IF v_result IS NULL THEN
        RETURN jsonb_build_object('error', 'invalid-token');
    END IF;

    RETURN jsonb_build_object('ok', true, 'info', v_result);
END;
$$;

REVOKE EXECUTE ON FUNCTION public.get_patient_intake_invite_info(text) FROM PUBLIC, anon;
GRANT  EXECUTE ON FUNCTION public.get_patient_intake_invite_info(text) TO authenticated, service_role;

COMMENT ON FUNCTION public.get_patient_intake_invite_info(text) IS
'A#31 — Lookup público read-only (via edge function) dos dados de apresentação do terapeuta/clínica dono do link de cadastro externo. Só retorna campos não-sensíveis.';