"""Faction ability system: applies passive bonuses."""


def get_passive_bonus(faction_id, bonus_type):
    """Get passive bonus value for a faction."""
    bonuses = {
        "zhao": {"cavalry_attack": 1},
        "wei": {"infantry_defense": 1},
    }
    return bonuses.get(faction_id, {}).get(bonus_type, 0)


def apply_faction_passive(unit, faction_id):
    """Apply faction passive to a unit at deploy time."""
    if faction_id == "zhao" and unit.unit_type == "cavalry":
        unit.attack += 1
    elif faction_id == "wei" and unit.unit_type == "infantry":
        unit.defense += 1
        unit.max_hp += 1
        unit.current_hp += 1