def suggested_numbers()

in phones/models.py [0:0]

• 40 lines of code
• 17 McCabe index (conditional complexity)

def suggested_numbers(user):
    try:
        real_phone = RealPhone.verified_objects.get_for_user(user)
    except RealPhone.DoesNotExist:
        raise BadRequest(
            "available_numbers: This user hasn't verified a RealPhone yet."
        )

    existing_number = RelayNumber.objects.filter(user=user)
    if existing_number:
        raise BadRequest(
            "available_numbers: Another RelayNumber already exists for this user."
        )

    real_num = real_phone.number
    client = twilio_client()
    avail_nums = client.available_phone_numbers(real_phone.country_code)

    # TODO: can we make multiple pattern searches in a single Twilio API request
    same_prefix_options = []
    # look for numbers with same area code and 3-number prefix
    contains = f"{real_num[:8]}****" if real_num else ""
    twilio_nums = avail_nums.local.list(contains=contains, limit=10)
    same_prefix_options.extend(convert_twilio_numbers_to_dict(twilio_nums))

    # look for numbers with same area code, 2-number prefix and suffix
    contains = f"{real_num[:7]}***{real_num[10:]}" if real_num else ""
    twilio_nums = avail_nums.local.list(contains=contains, limit=10)
    same_prefix_options.extend(convert_twilio_numbers_to_dict(twilio_nums))

    # look for numbers with same area code and 1-number prefix
    contains = f"{real_num[:6]}******" if real_num else ""
    twilio_nums = avail_nums.local.list(contains=contains, limit=10)
    same_prefix_options.extend(convert_twilio_numbers_to_dict(twilio_nums))

    # look for same number in other area codes
    contains = f"+1***{real_num[5:]}" if real_num else ""
    twilio_nums = avail_nums.local.list(contains=contains, limit=10)
    other_areas_options = convert_twilio_numbers_to_dict(twilio_nums)

    # look for any numbers in the area code
    contains = f"{real_num[:5]}*******" if real_num else ""
    twilio_nums = avail_nums.local.list(contains=contains, limit=10)
    same_area_options = convert_twilio_numbers_to_dict(twilio_nums)

    # look for any available numbers
    twilio_nums = avail_nums.local.list(limit=10)
    random_options = convert_twilio_numbers_to_dict(twilio_nums)

    return {
        "real_num": real_num,
        "same_prefix_options": same_prefix_options,
        "other_areas_options": other_areas_options,
        "same_area_options": same_area_options,
        "random_options": random_options,
    }