"""Unit tests for SMTP settings helpers in app.api.v1.settings."""

from app.api.v1.settings import (
    SMTPSettingsUpdate,
    _build_smtp_payload,
    _serialize_smtp_payload,
)


def test_serialize_masks_password_and_reports_configured():
    serialized = _serialize_smtp_payload(
        {
            "host": "smtp.example.com",
            "port": 587,
            "username": "noreply@example.com",
            "password": "super-secret",
            "from_address": "noreply@example.com",
            "from_name": "Planet",
            "use_tls": False,
            "use_starttls": True,
            "timeout_seconds": 20,
        }
    )
    assert serialized["configured"] is True
    assert serialized["password"]["configured"] is True
    assert "secret" not in serialized["password"]["preview"]


def test_serialize_marks_unconfigured_when_host_missing():
    serialized = _serialize_smtp_payload(
        {
            "host": "",
            "port": 587,
            "from_address": "",
        }
    )
    assert serialized["configured"] is False
    assert serialized["password"]["configured"] is False


def test_build_payload_preserves_password_when_placeholder_submitted():
    current = {
        "host": "smtp.example.com",
        "port": 587,
        "username": "noreply@example.com",
        "password": "super-secret",
        "from_address": "noreply@example.com",
        "from_name": "Planet",
        "use_tls": False,
        "use_starttls": True,
        "timeout_seconds": 20,
    }
    preview = _serialize_smtp_payload(current)["password"]["preview"]
    update = SMTPSettingsUpdate(
        host="smtp.example.com",
        port=587,
        username="noreply@example.com",
        password=preview,
        from_address="noreply@example.com",
    )
    merged = _build_smtp_payload(current, update)
    assert merged["password"] == "super-secret"


def test_build_payload_replaces_password_when_new_value_submitted():
    current = {"password": "old", "host": "", "port": 587, "from_address": ""}
    update = SMTPSettingsUpdate(
        host="smtp.example.com",
        port=587,
        password="new-secret",
        from_address="noreply@example.com",
    )
    merged = _build_smtp_payload(current, update)
    assert merged["password"] == "new-secret"


def test_build_payload_clears_password_when_requested():
    current = {"password": "old"}
    update = SMTPSettingsUpdate(
        host="smtp.example.com",
        port=587,
        from_address="noreply@example.com",
        clear_password=True,
    )
    merged = _build_smtp_payload(current, update)
    assert merged["password"] == ""