local ____lualib = require("lualib_bundle")
local __TS__Number = ____lualib.__TS__Number
local __TS__NumberIsFinite = ____lualib.__TS__NumberIsFinite
local ____exports = {}
local ____card_value_resolver = require("cards.card_value_resolver")
local getCardValueByLevel = ____card_value_resolver.getCardValueByLevel
____exports.MODIFIER_CARD_2 = "modifier_card_2"
____exports.MODIFIER_CARD_43 = "modifier_card_43"
local CARD_2_ID = 2
local MIN_BAT = 0.35
local DEFAULT_BAT = 1.7
--- BAT из KV юнита (AttackRate). GetBaseAttackTime() в рантайме — уже модифицированный интервал (~0.24), не подходит.
function ____exports.readHeroKVBaseAttackTime(self, parent)
    if not parent or not IsValidEntity(parent) then
        return DEFAULT_BAT
    end
    local unitName = parent:GetUnitName()
    if unitName ~= nil then
        local kv = GetUnitKeyValuesByName(unitName)
        local rateRaw = kv and kv.AttackRate
        local rate = tonumber(rateRaw) or __TS__Number(rateRaw)
        if __TS__NumberIsFinite(rate) and rate > 0 then
            return rate
        end
    end
    return DEFAULT_BAT
end
function ____exports.getCard2BatReductionPercent(self, hero)
    if not hero or not IsValidEntity(hero) then
        return 0
    end
    return math.max(
        0,
        getCardValueByLevel(
            nil,
            CARD_2_ID,
            hero,
            "attacktime",
            0
        )
    )
end
--- Целевой BAT после карт 2 (%) и суммарного flat с копий карты 43.
function ____exports.computeTargetBat(self, parent, card43FlatReduction)
    local baseBat = ____exports.readHeroKVBaseAttackTime(nil, parent)
    local card2Pct = ____exports.getCard2BatReductionPercent(nil, parent)
    local flat = math.max(0, card43FlatReduction)
    local targetBat = baseBat * (1 - card2Pct * 0.01) - flat
    return math.max(MIN_BAT, targetBat)
end
--- Прямое применение BAT на сервере (главный путь для карты 43).
function ____exports.applyHeroTargetBat(self, parent, card43FlatReduction)
    if not IsServer() or not parent or not IsValidEntity(parent) then
        return
    end
    parent:SetBaseAttackTime(____exports.computeTargetBat(nil, parent, card43FlatReduction))
end
--- Запасной IAS, если SetBaseAttackTime перезаписали.
function ____exports.computeAttackSpeedBonusForTargetBat(self, parent, card43FlatReduction)
    local currentBat = parent:GetBaseAttackTime()
    local targetBat = ____exports.computeTargetBat(nil, parent, card43FlatReduction)
    if not __TS__NumberIsFinite(currentBat) or currentBat <= 0 or targetBat >= currentBat - 0.001 then
        return 0
    end
    return 100 * (currentBat / targetBat - 1)
end
return ____exports