local previousInventory = {}
---@type ccTweaked.peripheral.WiredModem
local modem = peripheral.find("modem");
local turtleId = modem.getNameLocal()
local turtleMoveAllowed = true
local config = require("../../config") ---@type Config

local abstractInventoryLib = require("lib.abstractInventoryLib")

local peripherals = peripheral.getNames();

---@type AbstractInventory
local ail = nil

local function sync()
    print("Syncing..")
    ---@type string[]
    local foundInventories = {}

    for _, invPattern in ipairs(config.inventories) do
        for _, inv in ipairs(peripherals) do
            if string.find(inv, invPattern) then
                table.insert(foundInventories, inv)
            end
        end
    end

    ail = abstractInventoryLib(foundInventories, true, {
      --[[cache = true,
      optimal = true,
      unoptimal = true,
      api = true,
      defrag = true,
      redirect = function (e)
        print(e)
      end,]]
    })

    print("Synced.");
end
---@param itemName string
---@param perip ccTweaked.peripheral.Inventory|string|nil
---@param maxAmount number|nil
local function sendItemToSelf(itemName, perip, maxAmount)
    if perip == nil then
        perip = turtleId
    end
    turtleMoveAllowed = false

    local remaining = maxAmount or 64
    local total = 0

    if remaining <= 0 then
        turtleMoveAllowed = true
        return
    end

    if ail.getItem(itemName) then
        local nbtList = ail.listNBT(itemName)
        local chosenNBT = nil
        if nbtList and #nbtList > 0 then
            chosenNBT = nbtList[math.random(1, #nbtList)]
        end

        if chosenNBT == "NONE" then
            chosenNBT = nil
        end

        while remaining > 0 do
            local toSend = math.min(64, remaining)

            local ok, moved = pcall(function()
                ail.performTransfer()

                local amount = ail.pushItems(perip, itemName, toSend, nil, chosenNBT, {
                    ["allowBadTransfers"] = true,
                    ["optimal"] = false
                })

                ail.performTransfer()

                return amount
            end)
            total = total + moved
            if ok and moved and moved > 0 then
                remaining = remaining - moved
            else
                break
            end
        end
    end
    --    sleep(0.1)
    turtleMoveAllowed = true

    return total
end

---@param slots ccTweaked.turtle.turtleSlot[]
---@param perip ccTweaked.peripheral.Inventory|nil
---@param id string|nil
---@param maxAmount number|nil
local function sendItemAwayMultiple(slots, perip, id, maxAmount)
    if perip == nil then
        perip = turtle
    end
    local srcId = id or turtleId

    if srcId == nil then return end

    local itemsInSlots = {}
    for _, slot in ipairs(slots) do
        local item = perip.getItemDetail(slot)
        if item then
            itemsInSlots[slot] = item
        end
    end

    local totalMoved = 0
    local remaining = maxAmount or math.huge

    if remaining <= 0 then
        return 0
    end

    for _, slot in ipairs(slots) do
        if remaining <= 0 then break end

        local toSend = math.min(64, remaining)

        local ok, pulled = pcall(function()
            ail.performTransfer()

            local moved = ail.pullItems(srcId, slot, toSend, nil, nil, {
                ["allowBadTransfers"] = true,
                ["optimal"] = false
            })

            ail.performTransfer()
            return moved
        end)

        if ok and pulled and pulled > 0 then
            totalMoved = totalMoved + pulled
            remaining = remaining - pulled
        end
    end

    local numItems = 0
    for _, _ in pairs(itemsInSlots) do
        numItems = numItems + 1
    end

    if numItems > 0 then
        os.queueEvent("update_ui")
    end

    return totalMoved
end

local function getTurtleInventory()
    local inventory = {}
    for slot = 1, 16 do
        local item = turtle.getItemDetail(slot, false)
        inventory[slot] = item
    end
    return inventory
end

local function detectPlayerInsert()
    previousInventory = getTurtleInventory()

    while true do
        os.pullEvent("turtle_inventory")

        local currentInventory = getTurtleInventory()

        if turtleMoveAllowed then
            local newlyAddedSlots = {}

            for slot = 1, 16 do
                local prev = previousInventory[slot]
                local curr = currentInventory[slot]

                if not prev and curr then
                    table.insert(newlyAddedSlots, slot)
                end
            end

            if #newlyAddedSlots > 0 then
                sendItemAwayMultiple(newlyAddedSlots)
            end
        end

        previousInventory = currentInventory
    end
end

local function getAIL()
    return ail
end


return {
    detectPlayerInsert = detectPlayerInsert,
    sendItemAwayMultiple = sendItemAwayMultiple,
    sendItemToSelf = sendItemToSelf,
    getTurtleInventory = getTurtleInventory,
    sync = sync,
    getAIL = getAIL,
}