"""Unit-Tests für gewichtetes Fähigkeiten-Scoring (Phase 3)."""
from skill_scoring import (
    ExerciseOccurrence,
    compute_skill_profile,
    match_score_for_skill_ids,
    _level_range_multiplier,
    _skill_link_multiplier,
)


def test_skill_link_multiplier_intensity_and_levels():
    assert _skill_link_multiplier(intensity="hoch") == 1.2
    assert _skill_link_multiplier(intensity="niedrig") == 0.85
    wide = _skill_link_multiplier(
        intensity="mittel",
        required_level="basis",
        target_level="optimierung",
    )
    narrow = _skill_link_multiplier(
        intensity="mittel",
        required_level="grundlagen",
        target_level="grundlagen",
    )
    assert wide > narrow


def test_level_range_multiplier_span():
    assert _level_range_multiplier(None, None) == 1.0
    assert _level_range_multiplier("aufbau", "fortgeschritten") > _level_range_multiplier("basis", "basis")


def test_compute_skill_profile_aggregates_weights():
    occurrences = [
        ExerciseOccurrence(exercise_id=1, planned_duration_min=60),
        ExerciseOccurrence(exercise_id=1, planned_duration_min=30),
    ]
    skills_map = {
        1: [
            {
                "skill_id": 10,
                "skill_name": "Distanz",
                "category": "kihon",
                "intensity": "hoch",
                "required_level": "grundlagen",
                "target_level": "aufbau",
                "exercise_title": "Übung A",
            },
            {
                "skill_id": 11,
                "skill_name": "Balance",
                "category": "kihon",
                "intensity": "niedrig",
                "required_level": "basis",
                "target_level": "basis",
                "exercise_title": "Übung A",
            },
        ],
    }
    profile = compute_skill_profile(occurrences, skills_map)
    assert profile["scoring_version"] == "1.1"
    assert profile["exercise_occurrence_count"] == 2
    assert profile["distinct_exercise_count"] == 1
    assert len(profile["skills"]) == 2
    assert profile["skills"][0]["skill_id"] == 10
    assert profile["total_weight"] > profile["skills"][1]["weight"]
    assert abs(sum(s["share_percent"] for s in profile["skills"]) - 100.0) < 0.1


def test_match_score_for_skill_ids():
    profile = {
        "total_weight": 100.0,
        "skills": [
            {"skill_id": 1, "skill_name": "A", "weight": 40.0},
            {"skill_id": 2, "skill_name": "B", "weight": 60.0},
        ],
    }
    m = match_score_for_skill_ids(profile, [1])
    assert m["match_weight"] == 40.0
    assert m["match_percent"] == 40.0
    assert m["matched_skill_ids"] == [1]