from app.business.travel_calc import (
    compute_km_for_entry,
    compute_co2_grams,
    compute_frais_reels,
)

VEHICLES = {
    "familiale": {"co2_per_km": 142, "cv": 5, "type": "moteur"},
    "citadine": {"co2_per_km": 0, "cv": 3, "type": "moteur"},
    "velo": {"co2_per_km": 0, "type": "velo"},
}

JOURNEYS = {
    "moteur_seul": {"distances": {"moteur": 25}},
    "moteur_velo": {"distances": {"moteur": 14, "velo": 8}},
    "velo_seul": {"distances": {"velo": 24}},
}

TRANCHES_CV3 = [
    {"km_max": 5000,  "taux": 0.529, "forfait": 0},
    {"km_max": 20000, "taux": 0.316, "forfait": 1065},
    {"km_max": 0,     "taux": 0.370, "forfait": 0},
]

TRANCHES_CV5 = [
    {"km_max": 5000,  "taux": 0.636, "forfait": 0},
    {"km_max": 20000, "taux": 0.357, "forfait": 1395},
    {"km_max": 0,     "taux": 0.427, "forfait": 0},
]


def test_compute_km_moteur_seul_avec_vehicule():
    km = compute_km_for_entry("moteur_seul", JOURNEYS, "familiale")
    assert km == {"familiale": 25}


def test_compute_km_moteur_velo_avec_vehicule():
    km = compute_km_for_entry("moteur_velo", JOURNEYS, "citadine")
    assert km == {"citadine": 14, "velo": 8}


def test_compute_km_velo_seul():
    km = compute_km_for_entry("velo_seul", JOURNEYS)
    assert km == {"velo": 24}


def test_compute_km_sans_vehicule_moteur_ignore():
    km = compute_km_for_entry("moteur_seul", JOURNEYS, None)
    assert km == {}


def test_compute_km_no_journey():
    assert compute_km_for_entry(None, JOURNEYS) == {}


def test_compute_co2_familiale():
    assert compute_co2_grams({"familiale": 25}, VEHICLES) == 25 * 142


def test_compute_co2_citadine_electrique():
    assert compute_co2_grams({"citadine": 25}, VEHICLES) == 0


def test_compute_co2_velo():
    assert compute_co2_grams({"velo": 24}, VEHICLES) == 0


def test_frais_reels_tranche1():
    result = compute_frais_reels(2000, TRANCHES_CV5)
    assert abs(result - 1272.0) < 0.01  # 2000 × 0.636


def test_frais_reels_tranche2():
    result = compute_frais_reels(10000, TRANCHES_CV5)
    assert abs(result - 4965.0) < 0.01  # 10000 × 0.357 + 1395


def test_frais_reels_tranche3():
    result = compute_frais_reels(25000, TRANCHES_CV5)
    assert abs(result - 10675.0) < 0.01  # 25000 × 0.427


def test_frais_reels_electrique_majoration_20_pct():
    result = compute_frais_reels(2000, TRANCHES_CV3, electric=True)
    assert abs(result - 1269.6) < 0.01  # 2000 × 0.529 × 1.2


def test_frais_reels_non_electrique_sans_majoration():
    result = compute_frais_reels(2000, TRANCHES_CV3, electric=False)
    assert abs(result - 1058.0) < 0.01  # 2000 × 0.529