import pytest

from tft.model.baseline import classify_role, unit_value
from tft.model.calibrate import spearman
from tft.model.score import active_trait_tiers, score_board

STATIC = {
    "units": {
        "TFT17_A": {
            "cost": 1,
            "traits": ["TFT17_Tank"],
            "role": "Tank",
            "stats": {"hp": 650, "armor": 40, "magicResist": 40, "damage": 50,
                      "attackSpeed": 0.6, "mana": 60, "initialMana": 0, "range": 1},
        },
        "TFT17_B": {
            "cost": 4,
            "traits": ["TFT17_Tank"],
            "role": "Marksman",
            "stats": {"hp": 700, "armor": 25, "magicResist": 25, "damage": 75,
                      "attackSpeed": 0.75, "mana": 100, "initialMana": 20, "range": 4},
        },
    },
    "traits": {
        "TFT17_Tank": {
            "breakpoints": [{"min_units": 2, "style": 1}, {"min_units": 4, "style": 3}],
        },
    },
}

ARTIFACT = {"meta": {"set": 17}, "static": {**STATIC, "items": {}, "augments": {}},
            "roles": {}, "learned": {}}


def test_unit_value():
    assert unit_value(1, 1) == 1
    assert unit_value(4, 2) == 12
    assert unit_value(3, 3) == 27


def test_classify_role_from_cdragon_role():
    assert classify_role(STATIC["units"]["TFT17_A"]) == "frontline"
    assert classify_role(STATIC["units"]["TFT17_B"]) == "ad_carry"


def test_trait_activation():
    board = [{"api_name": "TFT17_A", "stars": 1, "items": []},
             {"api_name": "TFT17_B", "stars": 1, "items": []}]
    tiers = active_trait_tiers(board, STATIC["traits"], STATIC["units"])
    assert tiers == {"TFT17_Tank": 1}
    assert active_trait_tiers(board[:1], STATIC["traits"], STATIC["units"]) == {}


def test_score_ordering():
    weak = [{"api_name": "TFT17_A", "stars": 1, "items": []}]
    strong = [{"api_name": "TFT17_B", "stars": 2, "items": []}]
    assert score_board(strong, [], ARTIFACT) > score_board(weak, [], ARTIFACT)


def test_active_trait_beats_inactive():
    pair = [{"api_name": "TFT17_A", "stars": 1, "items": []},
            {"api_name": "TFT17_B", "stars": 1, "items": []}]
    solo_sum = score_board(pair[:1], [], ARTIFACT) + score_board(pair[1:], [], ARTIFACT)
    assert score_board(pair, [], ARTIFACT) > solo_sum


def test_items_increase_score():
    bare = [{"api_name": "TFT17_B", "stars": 1, "items": []}]
    with_item = [{"api_name": "TFT17_B", "stars": 1, "items": ["TFT_Item_InfinityEdge"]}]
    assert score_board(with_item, [], ARTIFACT) > score_board(bare, [], ARTIFACT)


def test_spearman():
    assert spearman([1, 2, 3, 4], [10, 20, 30, 40]) == pytest.approx(1.0)
    assert spearman([1, 2, 3, 4], [40, 30, 20, 10]) == pytest.approx(-1.0)
    assert spearman([1, 2, 3, 4], [10, 10, 10, 10]) == 0.0