"""Tests for profile field validation."""

from validation import (
    validate_contact_email,
    validate_nostr_npub,
    validate_profile_fields,
    validate_signal,
    validate_telegram,
)


class TestValidateContactEmail:
    """Tests for contact email validation."""

    def test_none_is_valid(self):
        assert validate_contact_email(None) is None

    def test_empty_string_is_valid(self):
        assert validate_contact_email("") is None

    def test_valid_email(self):
        assert validate_contact_email("user@example.com") is None

    def test_valid_email_with_plus(self):
        assert validate_contact_email("user+tag@example.com") is None

    def test_valid_email_subdomain(self):
        assert validate_contact_email("user@mail.example.com") is None

    def test_invalid_email_no_at(self):
        result = validate_contact_email("userexample.com")
        assert result is not None
        assert "not valid" in result.lower() or "@" in result

    def test_invalid_email_no_domain(self):
        result = validate_contact_email("user@")
        assert result is not None

    def test_invalid_email_spaces(self):
        result = validate_contact_email("user @example.com")
        assert result is not None


class TestValidateTelegram:
    """Tests for Telegram handle validation."""

    def test_none_is_valid(self):
        assert validate_telegram(None) is None

    def test_empty_string_is_valid(self):
        assert validate_telegram("") is None

    def test_valid_handle(self):
        assert validate_telegram("@alice") is None

    def test_valid_handle_with_numbers(self):
        assert validate_telegram("@alice123") is None

    def test_valid_handle_with_underscore(self):
        assert validate_telegram("@alice_bob") is None

    def test_valid_handle_min_length(self):
        # 1 character after @
        assert validate_telegram("@a") is None

    def test_valid_handle_max_length(self):
        # 32 characters after @
        assert validate_telegram("@" + "a" * 32) is None

    def test_missing_at_prefix(self):
        result = validate_telegram("alice")
        assert result is not None
        assert "@" in result

    def test_just_at_sign(self):
        result = validate_telegram("@")
        assert result is not None

    def test_too_long(self):
        # More than 32 characters after @
        result = validate_telegram("@" + "a" * 33)
        assert result is not None
        assert "32" in result

    def test_starts_with_number_is_valid(self):
        # Now allowed - any character is valid
        assert validate_telegram("@1alice") is None

    def test_special_characters_are_valid(self):
        # Now allowed - any character is valid
        assert validate_telegram("@alice-bob") is None
        assert validate_telegram("@test.user") is None


class TestValidateSignal:
    """Tests for Signal username validation."""

    def test_none_is_valid(self):
        assert validate_signal(None) is None

    def test_empty_string_is_valid(self):
        assert validate_signal("") is None

    def test_valid_username(self):
        assert validate_signal("alice.42") is None

    def test_valid_simple_username(self):
        assert validate_signal("alice") is None

    def test_valid_with_numbers(self):
        assert validate_signal("alice123") is None

    def test_whitespace_only_invalid(self):
        result = validate_signal("   ")
        assert result is not None
        assert "empty" in result.lower()

    def test_too_long(self):
        result = validate_signal("a" * 65)
        assert result is not None
        assert "64" in result


class TestValidateNostrNpub:
    """Tests for Nostr npub validation."""

    # Valid npub for testing (32 zero bytes encoded as bech32)
    VALID_NPUB = "npub1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzqujme"

    def test_none_is_valid(self):
        assert validate_nostr_npub(None) is None

    def test_empty_string_is_valid(self):
        assert validate_nostr_npub("") is None

    def test_valid_npub(self):
        # Generate a valid npub for testing
        # This is the npub for 32 zero bytes
        assert validate_nostr_npub(self.VALID_NPUB) is None

    def test_wrong_prefix(self):
        result = validate_nostr_npub(
            "nsec1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqwcv5dz"
        )
        assert result is not None
        assert "npub" in result.lower()

    def test_invalid_checksum(self):
        # Change last character to break checksum
        result = validate_nostr_npub(
            "npub1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsutgpd"
        )
        assert result is not None
        assert "checksum" in result.lower()

    def test_too_short(self):
        result = validate_nostr_npub("npub1short")
        assert result is not None

    def test_not_starting_with_npub1(self):
        result = validate_nostr_npub(
            "npub2qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsutgpc"
        )
        assert result is not None
        assert "npub1" in result

    def test_random_string(self):
        result = validate_nostr_npub("not_a_valid_npub_at_all")
        assert result is not None


class TestValidateProfileFields:
    """Tests for validating all profile fields together."""

    def test_all_none_is_valid(self):
        errors = validate_profile_fields()
        assert errors == {}

    def test_all_valid(self):
        errors = validate_profile_fields(
            contact_email="user@example.com",
            telegram="@alice",
            signal="alice.42",
            nostr_npub="npub1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzqujme",
        )
        assert errors == {}

    def test_single_invalid_field(self):
        errors = validate_profile_fields(
            contact_email="user@example.com",
            telegram="alice",  # Missing @
            signal="alice.42",
        )
        assert "telegram" in errors
        assert len(errors) == 1

    def test_multiple_invalid_fields(self):
        errors = validate_profile_fields(
            contact_email="not-an-email",
            telegram="alice",  # Missing @
        )
        assert "contact_email" in errors
        assert "telegram" in errors
        assert len(errors) == 2

    def test_empty_values_are_valid(self):
        errors = validate_profile_fields(
            contact_email="",
            telegram="",
            signal="",
            nostr_npub="",
        )
        assert errors == {}