from src.email_utils import format_onboarding_email, parse_contacts_from_array, get_email_addresses


class TestFormatOnboardingEmail:
    """Tests for email formatting function."""

    def test_empty_contacts_produces_safe_greeting(self):
        """Empty contacts should still produce valid email without PII leakage."""
        stores = [
            {
                "shop_domain": "store1.myshopify.com",
                "connect_card_uri": "https://card1",
                "link_expires_at": "2026-07-09T10:00:00+00:00",
            }
        ]
        contacts = []

        body = format_onboarding_email(stores, contacts)

        assert "Dear ," not in body
        assert "Dear Team," in body

    def test_happy_path_produces_valid_email(self):
        """Valid stores and contacts should produce well-formatted email."""
        stores = [
            {
                "shop_domain": "store1.myshopify.com",
                "connect_card_uri": "https://card1",
                "link_expires_at": "2026-07-09T10:00:00+00:00",
            }
        ]
        contacts = [{"name": "John", "role": "Admin", "company": "Acme", "email": "john@acme.com"}]

        body = format_onboarding_email(stores, contacts)

        assert "John" in body
        assert "store1.myshopify.com" in body
        assert "https://card1" in body
        assert "2026-07-09T10:00:00+00:00" in body


class TestParseContactsFromArray:
    """Tests for contact parsing."""

    def test_empty_array_returns_empty_list(self):
        result = parse_contacts_from_array([])
        assert result == []

    def test_none_returns_empty_list(self):
        result = parse_contacts_from_array(None)
        assert result == []

    def test_json_string_parsed_correctly(self):
        import json

        contacts_json = json.dumps([{"NAME": "Alice", "EMAIL": "alice@test.com"}])
        result = parse_contacts_from_array(contacts_json)

        assert len(result) == 1
        assert result[0]["name"] == "Alice"
        assert result[0]["email"] == "alice@test.com"


class TestGetEmailAddresses:
    """Tests for email extraction and validation."""

    def test_valid_emails_extracted(self):
        contacts = [
            {"name": "John", "email": "john@example.com"},
            {"name": "Jane", "email": "jane@example.com"},
        ]

        result = get_email_addresses(contacts)

        assert len(result) == 2
        assert "john@example.com" in result
        assert "jane@example.com" in result

    def test_invalid_emails_filtered(self):
        """Emails without domain should be filtered out."""
        contacts = [
            {"name": "John", "email": "john@example.com"},
            {"name": "Bad", "email": "nodomain"},
            {"name": "Invalid", "email": "noatsign.com"},
        ]

        result = get_email_addresses(contacts)

        assert len(result) == 1
        assert result[0] == "john@example.com"

    def test_empty_contacts_returns_empty_list(self):
        result = get_email_addresses([])
        assert result == []

    def test_duplicates_deduplicated(self):
        contacts = [
            {"name": "John1", "email": "john@example.com"},
            {"name": "John2", "email": "john@example.com"},
        ]

        result = get_email_addresses(contacts)

        assert len(result) == 1
        assert result[0] == "john@example.com"

    def test_emails_normalized_to_lowercase(self):
        contacts = [{"name": "John", "email": "JOHN@EXAMPLE.COM"}]

        result = get_email_addresses(contacts)

        assert result[0] == "john@example.com"