# Feature: llm-fulltext-matching, Property 1: Profil-Serialisierung ist deterministisch und feldvollständig
"""Property-based tests for deterministic profile serialization.

These tests cover the deterministic serialization helpers
``serialize_capacity_profile`` and ``serialize_task_profile`` defined in
``teamlandkarte_mcp.matching.profiles``. They verify three core properties
that hold for every randomly generated profile:

1. **Determinism**: calling the serializer twice on the same profile yields
   exactly identical strings.
2. **Field-heading completeness**: the serialized output always contains
   every field heading required by the spec.
3. **Partner-name visibility**: when a ``CapacityReferenceEntry`` has a
   non-empty ``partner_name``, that name appears as a substring of the
   serialized capacity profile.

**Validates: Requirements 3.3, 3.4, 3.6, 3.7, 4.3, 4.4**
"""

from __future__ import annotations

from hypothesis import given, settings
from hypothesis import strategies as st

from teamlandkarte_mcp.matching.profiles import (
    CapacityProfile,
    CapacityReferenceEntry,
    TaskProfile,
    serialize_capacity_profile,
    serialize_task_profile,
)


# Small text strategy to keep generation fast and deterministic.
_text = st.text(max_size=40)

# `partner_name` may be empty (NULL `partner_id` / Join-Mismatch) or any
# short non-empty text.
_partner_name = st.one_of(st.just(""), st.text(min_size=1, max_size=20))

# The builder strips empty `projects`, but the serializer renders every
# entry it receives. Use non-whitespace projects so containment assertions
# are unambiguous.
_projects = st.text(min_size=1, max_size=40).filter(lambda s: s.strip() != "")

_reference = st.builds(
    CapacityReferenceEntry,
    partner_name=_partner_name,
    projects=_projects,
)

_capacity_profile = st.builds(
    CapacityProfile,
    id=_text,
    owner_name=_text,
    role_name=_text,
    competences=st.lists(_text, max_size=5),
    description=_text,
    references=st.lists(_reference, max_size=5),
    certificates=st.lists(
        _text.filter(lambda s: s.strip() != ""), max_size=5
    ),
)

_task_profile = st.builds(
    TaskProfile,
    id=_text,
    title=_text,
    description=_text,
    skills=st.lists(_text, max_size=5),
)


_CAPACITY_HEADINGS = (
    "Rolle:",
    "Kompetenzen:",
    "Beschreibung:",
    "Referenzen:",
    "Zertifikate:",
)

_TASK_HEADINGS = (
    "Titel:",
    "Beschreibung:",
    "Gesuchte Kompetenzen:",
)


@settings(max_examples=100, deadline=None)
@given(profile=_capacity_profile)
def test_capacity_profile_serialization_is_deterministic_and_complete(
    profile: CapacityProfile,
) -> None:
    """Property 1 (Capacity): determinism, heading completeness, partner name.

    For any :class:`CapacityProfile` (including references with empty or
    non-empty ``partner_name``) the serializer must:

    * produce identical strings on repeated calls (determinism),
    * always include every field heading required by the spec, and
    * include every non-empty ``partner_name`` from the references list as
      a substring of the serialized output.
    """
    first = serialize_capacity_profile(profile)
    second = serialize_capacity_profile(profile)

    # Determinism: two consecutive calls return the exact same string.
    assert first == second, "serialize_capacity_profile is not deterministic"

    # Every field heading must always be present.
    for heading in _CAPACITY_HEADINGS:
        assert heading in first, (
            f"Heading {heading!r} missing from capacity serialization: {first!r}"
        )

    # Each reference with a non-empty partner_name must appear verbatim.
    for ref in profile.references:
        if ref.partner_name:
            assert ref.partner_name in first, (
                f"Partner name {ref.partner_name!r} missing from "
                f"serialization: {first!r}"
            )


@settings(max_examples=100, deadline=None)
@given(profile=_task_profile)
def test_task_profile_serialization_is_deterministic_and_complete(
    profile: TaskProfile,
) -> None:
    """Property 1 (Task): determinism and heading completeness.

    For any :class:`TaskProfile` the serializer must produce identical
    strings on repeated calls and always include every field heading
    required by the spec.
    """
    first = serialize_task_profile(profile)
    second = serialize_task_profile(profile)

    # Determinism: two consecutive calls return the exact same string.
    assert first == second, "serialize_task_profile is not deterministic"

    # Every field heading must always be present.
    for heading in _TASK_HEADINGS:
        assert heading in first, (
            f"Heading {heading!r} missing from task serialization: {first!r}"
        )