from app.services.human_handoff_service import (
    MESSAGE_SCOPE_EXTERNAL,
    MESSAGE_SCOPE_HANDOFF,
    build_handoff_subject,
    maybe_trigger_handoff,
    process_human_reply,
    redact_human_address,
    resolve_handoff_from_inbound,
    select_matching_handoff_rule,
)


def test_scope_constants_are_distinct():
    assert MESSAGE_SCOPE_EXTERNAL != MESSAGE_SCOPE_HANDOFF


def test_human_handoff_runtime_is_enabled():
    assert callable(maybe_trigger_handoff)
    assert callable(process_human_reply)
    assert callable(resolve_handoff_from_inbound)


def test_private_subject_contains_customer_name_and_external_subject():
    subject = build_handoff_subject(
        sender_name="Parth Dixit",
        external_sender="parthdixit091@gmail.com",
        external_subject="Invoice 42",
    )
    assert subject == (
        "Parth Dixit · handoff · parthdixit091@gmail.com · Invoice 42"
    )


def test_private_subject_removes_header_line_breaks():
    subject = build_handoff_subject(
        sender_name="Urgent\r\nBcc: attacker@example.com",
        external_sender="customer@example.com",
        external_subject="Help",
    )
    assert "\r" not in subject
    assert "\n" not in subject


def test_human_address_is_replaced_before_external_relay():
    value = "Regards,\nOwner <private.owner@example.com>"
    assert redact_human_address(
        value,
        human_email="private.owner@example.com",
        agent_email="agent@gentic.email",
    ) == "Regards,\nOwner <agent@gentic.email>"


def test_lowest_priority_matching_rule_wins():
    rules = [
        {
            "name": "Backup",
            "priority": 20,
            "labels": ["All mail"],
            "email_types": ["all"],
            "instructions": "",
        },
        {
            "name": "Primary",
            "priority": 1,
            "labels": ["All mail"],
            "email_types": ["all"],
            "instructions": "",
        },
    ]
    selected = select_matching_handoff_rule(
        rules,
        email={"subject": "Hello", "body_text": "Need help"},
    )
    assert selected["name"] == "Primary"