local ____lualib = require("lualib_bundle")
local __TS__Class = ____lualib.__TS__Class
local __TS__New = ____lualib.__TS__New
local __TS__ArrayIncludes = ____lualib.__TS__ArrayIncludes
local ____exports = {}
local ____difficulty_manager = require("difficulty_manager")
local Difficulty = ____difficulty_manager.Difficulty
local ____contracts_registry = require("death_sentence.contracts_registry")
local getDeathSentenceItemDropChanceMultiplier = ____contracts_registry.getDeathSentenceItemDropChanceMultiplier
local ____luck = require("utils.luck")
local getLuck = ____luck.getLuck
local rollLuckChance = ____luck.rollLuckChance
local ____get_true_hero_from_entity = require("utils.get_true_hero_from_entity")
local getTrueHeroFromEntity = ____get_true_hero_from_entity.getTrueHeroFromEntity
--- Маркер на CDOTA_Item: дроп из этой системы (KV без стакаемой шаряемости тоже обрабатываем по флагу).
local ITEM_DROP_SYSTEM_MARK = "_item_drop_system_world_loot"
local KV_FULLY_SHAREABLE_STACKING = "ITEM_FULLY_SHAREABLE_STACKING"
--- Скан слотов инвентаря героя (основной + рюкзак + нейтральные слоты при наличии).
local HERO_ITEM_SLOT_SCAN_MAX = 16
____exports.ItemDropSystem = __TS__Class()
local ItemDropSystem = ____exports.ItemDropSystem
ItemDropSystem.name = "ItemDropSystem"
ItemDropSystem.____file_path = "scripts/vscripts/item_drops.lua"
function ItemDropSystem.prototype.____constructor(self)
    ListenToGameEvent(
        "entity_killed",
        function(event) return ____exports.ItemDropSystem:OnEntityKilled(event) end,
        nil
    )
    ListenToGameEvent(
        "dota_item_picked_up",
        function(event) return ____exports.ItemDropSystem:OnItemPickedUp(event) end,
        nil
    )
end
function ItemDropSystem.Initialize(self)
    if not ____exports.ItemDropSystem.instance then
        ____exports.ItemDropSystem.instance = __TS__New(____exports.ItemDropSystem)
    end
end
function ItemDropSystem.spawnLootOnGround(self, position, itemName, quantity, despawnTime)
    if quantity <= 0 then
        return
    end
    local items = {}
    local first = CreateItem(itemName, nil, nil)
    if not first then
        return
    end
    if quantity > 1 and first:GetInitialCharges() == 1 then
        first:SetCurrentCharges(quantity)
        items[#items + 1] = first
    else
        items[#items + 1] = first
        do
            local i = 1
            while i < quantity do
                local extra = CreateItem(itemName, nil, nil)
                if extra then
                    items[#items + 1] = extra
                end
                i = i + 1
            end
        end
    end
    for ____, item in ipairs(items) do
        item[ITEM_DROP_SYSTEM_MARK] = true
        local physicalItem = CreateItemOnPositionForLaunch(position, item)
        local dropRadius = RandomFloat(50, 100)
        item:LaunchLootInitialHeight(
            false,
            0,
            150,
            0.5,
            position + RandomVector(dropRadius)
        )
        if despawnTime and despawnTime > 0 then
            Timers:CreateTimer(
                despawnTime,
                function()
                    if not physicalItem or not IsValidEntity(physicalItem) then
                        return
                    end
                    local owner = physicalItem:GetOwner()
                    if not owner then
                        UTIL_Remove(physicalItem)
                    end
                end
            )
        end
    end
end
function ItemDropSystem.SpawnRandomDropsOnDeath(self, unit, killingHero)
    if not unit then
        return
    end
    local position = unit:GetAbsOrigin()
    local unitName = unit:GetUnitName()
    local dsDropMult = getDeathSentenceItemDropChanceMultiplier(
        nil,
        Difficulty:getWinningContractSnapshot()
    )
    local luckHero = killingHero ~= nil and killingHero ~= nil and IsValidEntity(killingHero) and killingHero:IsRealHero() and not killingHero:IsIllusion() and killingHero or nil
    for ____, dropItem in ipairs(self.possibleDrops) do
        do
            if #dropItem.unitTypes > 0 and not __TS__ArrayIncludes(dropItem.unitTypes, unitName) then
                goto __continue22
            end
            local effectiveChance = dropItem.chance >= 100 and 100 or math.max(
                0,
                math.floor(dropItem.chance * dsDropMult + 1e-9)
            )
            if effectiveChance <= 0 then
                goto __continue22
            end
            local baseFraction = effectiveChance / 100
            local ____temp_0
            if luckHero ~= nil then
                ____temp_0 = rollLuckChance(nil, luckHero, baseFraction)
            else
                ____temp_0 = RandomInt(1, 100) <= effectiveChance
            end
            local dropped = ____temp_0
            if dropped then
                local quantity
                if type(dropItem.quantity) == "number" then
                    quantity = dropItem.quantity
                else
                    local q = dropItem.quantity
                    quantity = RandomInt(q.min, q.max)
                    if luckHero ~= nil and q.max > q.min then
                        local luckBonus = math.max(
                            0,
                            math.floor(getLuck(nil, luckHero) / 10)
                        )
                        quantity = quantity + luckBonus
                    end
                end
                ____exports.ItemDropSystem:spawnLootOnGround(position, dropItem.itemName, quantity, dropItem.despawnTime)
            end
        end
        ::__continue22::
    end
end
function ItemDropSystem.readItemShareabilityKv(self, item)
    do
        local ____try, ____hasReturned, ____returnValue = pcall(function()
            local kv = item:GetAbilityKeyValues()
            if kv and type(kv) == "table" then
                local v = kv.ItemShareability
                if v ~= nil and v ~= nil then
                    return true, tostring(v)
                end
            end
        end)
        if ____try and ____hasReturned then
            return ____returnValue
        end
    end
    do
        local ____try, ____hasReturned, ____returnValue = pcall(function()
            local anyItem = item
            local ____opt_1 = anyItem.GetAbilityKeyValue
            local v2 = ____opt_1 and ____opt_1(anyItem, "ItemShareability")
            if v2 ~= nil and v2 ~= nil then
                return true, tostring(v2)
            end
        end)
        if ____try and ____hasReturned then
            return ____returnValue
        end
    end
    return nil
end
function ItemDropSystem.isFullyShareableStackingKv(self, item)
    return ____exports.ItemDropSystem:readItemShareabilityKv(item) == KV_FULLY_SHAREABLE_STACKING
end
function ItemDropSystem.isKnownWorldDropItemName(self, itemName)
    for ____, row in ipairs(____exports.ItemDropSystem.possibleDrops) do
        if row.itemName == itemName then
            return true
        end
    end
    return false
end
function ItemDropSystem.slotQualifiesForPurchaserRefresh(self, it, itemName, includeDropTableName)
    if it:GetAbilityName() ~= itemName then
        return false
    end
    local mark = it
    if mark[ITEM_DROP_SYSTEM_MARK] == true then
        return true
    end
    if ____exports.ItemDropSystem:isFullyShareableStackingKv(it) then
        return true
    end
    return includeDropTableName and ____exports.ItemDropSystem:isKnownWorldDropItemName(itemName)
end
function ItemDropSystem.applyPurchaserToHeroSlotsForItem(self, hero, itemName, includeDropTableName)
    if not hero or not hero:IsRealHero() or not itemName then
        return
    end
    do
        local slot = 0
        while slot < HERO_ITEM_SLOT_SCAN_MAX do
            do
                local it = hero:GetItemInSlot(slot)
                if not it or it:IsNull() then
                    goto __continue47
                end
                if not ____exports.ItemDropSystem:slotQualifiesForPurchaserRefresh(it, itemName, includeDropTableName) then
                    goto __continue47
                end
                do
                    pcall(function()
                        local ____this_4
                        ____this_4 = it
                        local ____opt_3 = ____this_4.SetPurchaser
                        if ____opt_3 ~= nil then
                            ____opt_3(____this_4, hero)
                        end
                    end)
                end
            end
            ::__continue47::
            slot = slot + 1
        end
    end
end
function ItemDropSystem.schedulePurchaserRefreshAfterPickup(self, hero, itemName, includeDropTableName)
    local function run()
        return ____exports.ItemDropSystem:applyPurchaserToHeroSlotsForItem(hero, itemName, includeDropTableName)
    end
    run(nil)
    Timers:CreateTimer(
        0,
        function()
            run(nil)
            return nil
        end
    )
    Timers:CreateTimer(
        0.06,
        function()
            run(nil)
            return nil
        end
    )
    Timers:CreateTimer(
        0.15,
        function()
            run(nil)
            return nil
        end
    )
end
function ItemDropSystem.OnItemPickedUp(self, event)
    if not IsServer() then
        return
    end
    local heroIndex = event.HeroEntityIndex
    local itemIndex = event.ItemEntityIndex
    if heroIndex == nil or heroIndex == nil or itemIndex == nil or itemIndex == nil then
        return
    end
    local hero = EntIndexToHScript(heroIndex)
    local item = EntIndexToHScript(itemIndex)
    if not hero or not hero:IsRealHero() or not item or not IsValidEntity(item) then
        return
    end
    local itemName = item:GetAbilityName()
    if not itemName then
        return
    end
    local mark = item
    local fromWorldDrop = mark[ITEM_DROP_SYSTEM_MARK] == true
    local stackingShareable = ____exports.ItemDropSystem:isFullyShareableStackingKv(item)
    if not fromWorldDrop and not stackingShareable then
        return
    end
    ____exports.ItemDropSystem:schedulePurchaserRefreshAfterPickup(hero, itemName, fromWorldDrop)
end
function ItemDropSystem.OnEntityKilled(self, event)
    if not IsServer() then
        return
    end
    local killedUnit = EntIndexToHScript(event.entindex_killed)
    if not killedUnit or not killedUnit:IsBaseNPC() then
        return
    end
    local attackerIndex = event.entindex_attacker
    local ____temp_5
    if attackerIndex ~= nil and attackerIndex ~= nil and attackerIndex > 0 then
        ____temp_5 = EntIndexToHScript(attackerIndex)
    else
        ____temp_5 = nil
    end
    local attackerEnt = ____temp_5
    local ____attackerEnt_6
    if attackerEnt then
        ____attackerEnt_6 = getTrueHeroFromEntity(nil, attackerEnt)
    else
        ____attackerEnt_6 = nil
    end
    local killingHero = ____attackerEnt_6
    ____exports.ItemDropSystem:SpawnRandomDropsOnDeath(killedUnit, killingHero)
end
function ItemDropSystem.getInstance(self)
    if not ____exports.ItemDropSystem.instance then
        ____exports.ItemDropSystem.instance = __TS__New(____exports.ItemDropSystem)
    end
    return ____exports.ItemDropSystem.instance
end
ItemDropSystem.possibleDrops = {
    {
        itemName = "item_meat",
        chance = 50,
        quantity = {min = 1, max = 3},
        unitTypes = {"npc_pig"},
        despawnTime = 15
    },
    {
        itemName = "item_milk",
        chance = 50,
        quantity = {min = 1, max = 3},
        unitTypes = {"npc_sheep"},
        despawnTime = 15
    },
    {
        itemName = "item_wolf_claw",
        chance = 35,
        quantity = {min = 1, max = 2},
        unitTypes = {"npc_wolf"},
        despawnTime = 15
    },
    {
        itemName = "item_ent_heart",
        chance = 80,
        quantity = {min = 1, max = 2},
        unitTypes = {"npc_ent"},
        despawnTime = 15
    },
    {
        itemName = "item_frog_paw",
        chance = 20,
        quantity = {min = 1, max = 4},
        unitTypes = {"npc_frogman_magi"},
        despawnTime = 25
    },
    {
        itemName = "item_frog_paw",
        chance = 15,
        quantity = {min = 1, max = 4},
        unitTypes = {"npc_frop_tadpole"},
        despawnTime = 25
    },
    {
        itemName = "item_frog_paw",
        chance = 10,
        quantity = {min = 1, max = 4},
        unitTypes = {"npc_small_frog_froglet"},
        despawnTime = 25
    },
    {
        itemName = "item_frog_paw",
        chance = 5,
        quantity = {min = 1, max = 2},
        unitTypes = {"npc_mini_frog"},
        despawnTime = 25
    },
    {itemName = "item_poison", chance = 75, quantity = 1, unitTypes = {"npc_venomancer_brute", "npc_ravenous_woodfang", "npc_lycosidae_stalker"}},
    {itemName = "item_spider_legs_custom", chance = 40, quantity = {min = 1, max = 6}, unitTypes = {"npc_ravenous_woodfang", "npc_lycosidae_stalker"}},
    {itemName = "item_aghanims_shard_roshan", chance = 100, quantity = 1, unitTypes = {"npc_witch"}},
    {itemName = "item_lycan_horn", chance = 100, quantity = 1, unitTypes = {"npc_boss_lycan"}},
    {itemName = "item_wooden_katana", chance = 100, quantity = 1, unitTypes = {"npc_sakura_tree"}},
    {
        itemName = "item_egg",
        chance = 20,
        quantity = 1,
        unitTypes = {"npc_chicken"},
        despawnTime = 25
    }
}
return ____exports