--[[

This file is only loaded when the game is launched with the "--luadebug" launch option.
This allows mods to have access to your computer's files, which is necessary to read glitched item info that's printed to the game's log file.

Having --luadebug on would allow malicious mods to delete your files, execute command prompt commands, and probably much more.
USE AT YOUR OWN RISK.

]]

local game = Game()

-- glitched items start at 4294967295
local maxNumber = 4294967296
local spawnedItems = 0

local logLocation = os.getenv("SYSTEMDRIVE") .. "/Users/" .. os.getenv("USERNAME") .. "/Documents/My Games/Binding of Isaac Repentance/log.txt"
local logFound = false
local logCursor = 0

--currently english only
local attributeConversions = {
	--chain = "Then: ",
	chain = "",
	active = "On use:#",
	pickup_collected = "When you collect a pickup:#",
	enemy_kill = "On kill, chance to:#",
	damage_taken = "When you take damage:#",
	entity_spawned = "When a {T1} is spawned, chance to:#",
	tear_fire = "When you fire a tear, chance to:#",
	enemy_hit = "On hitting an enemy, chance to:#",
	room_clear = "On room clear:#",
	
	area_damage = "Deal {1} damage in an area around you", 
	add_temporary_effect = "Gain {1} for the room",
	convert_entities = "Convert all {1} in the room to {2}",
	use_active_item = "Use {1}",
	spawn_entity = "Spawn a {1}",
	fart = "Fart with size {1}",
}

local lastEffectTrigger = "chain"

local function parseEffectLine(raw)
	local words = {}
	for w in string.gmatch(raw,"%S+") do table.insert(words, w) end
	
	local triggerReplacements = {}
	local replacements = {}
	
	-- words[1] = "[INFO]", words[2] = "-"
	local effectTrigger = words[3]
	if (string.find(effectTrigger, "entity_spawned")) then
		effectTrigger = "entity_spawned"
		triggerReplacements[1] = string.sub(words[3], 16, -2)
	end
	-- words[4] = "->"
	local effectType = words[5]
	local fullEffect = ""
	for i=5,#words do fullEffect = fullEffect .. words[i] .. " " end
	
	
	local extraText = ""
	-- switch statement for how to handle the words after the effect type
	if effectType == "add_temporary_effect" or effectType == "use_active_item" then
		-- remainder of line = collectible name that's granted for the room
		local name = ""
		for i=6,#words do
			name = name .. words[i]
			if (i ~= #words) then name = name .. " " end
		end
		
		replacements[1] = "{{Collectible" .. Isaac.GetItemIdByName(name) .. "}}" .. name
	elseif effectType == "convert_entities" then
		--figure out how to convert entity numbers
		replacements[1] = words[6]
		replacements[2] = words[8]
	elseif effectType == "spawn_entity" then
		replacements[1] = words[6]
	elseif effectType == "fart" then
		replacements[1] = words[6]
	elseif effectType == "area_damage" then
		--I could check for 0 damage here and not show it
		--It also has flags in words[8] but they don't seem very useful, usually all zeroes
		replacements[1] = words[6]
	end
	
	local eidString = ""
	if effectTrigger ~= lastEffectTrigger then eidString = eidString .. (attributeConversions[effectTrigger] or (effectTrigger .. "#")) end
	eidString = eidString .. (attributeConversions[effectType] or fullEffect) .. extraText .. "#"
	for k,v in ipairs(triggerReplacements) do eidString = string.gsub(eidString, "{T" .. k .. "}", v) end
	for k,v in ipairs(replacements) do eidString = string.gsub(eidString, "{" .. k .. "}", v) end
	
	if effectTrigger ~= "chain" then lastEffectTrigger = effectTrigger end
	return eidString
end

--SOMETHING SCREWY WITH GLOWING HOURGLASS

local function CountLogItems()
	local theLog = io.open(logLocation, "r")
	theLog:seek("set", logCursor)
	
	local itemCount = 0
	
	local line = theLog:read()
	while line ~= nil do
		if string.find(line, "initialized with") then
			itemCount = itemCount + 1
		end
		line = theLog:read()
	end
	
	theLog:close()
	return itemCount
end

local function CheckLogForItems(_)
	if (not logFound or game:GetFrameCount() % 5 ~= 0 or not EID:PlayersHaveCollectible(CollectibleType.COLLECTIBLE_TMTRAINER)) then return end
	
	local numEffects = 0
	local itemScore = 0
	local effects = {}
	local eidDesc = ""
	
	local theLog = io.open(logLocation, "r")
	theLog:seek("set", logCursor)
	
	local logLines = {}
	local line = theLog:read()
	while line ~= nil do
		if string.find(line, "initialized with") then
			local count = 0
			spawnedItems = spawnedItems + 1
			lastEffectTrigger = "chain"
			eidDesc = ""
			-- find the number of effects, and the score given
			-- (this match gets every number in the line)
			for s in string.gmatch(line, "%d*%.?%d+") do
				if count == 0 then
					numEffects = tonumber(s)
					count = 1
				elseif count == 1 then
					itemScore = tonumber(s)
				end
			end
		elseif numEffects > 0 then
			numEffects = numEffects - 1
			table.insert(effects, line)
			eidDesc = eidDesc .. parseEffectLine(line)
			-- also display the unparsed line for debug purposes (REMOVE THIS)
			--eidDesc = eidDesc .. "(" .. line .. ")#"
			if numEffects == 0 then
				-- Glowing Hour Glass type effects will cause the game to reload all items, check if our desc is equal to the first one
				if (EID:getDescriptionObj(5, 100, maxNumber - 1).Description == eidDesc) then spawnedItems = 1 end
				EID:addCollectible(maxNumber - spawnedItems, eidDesc)
				print("adding " .. (maxNumber - spawnedItems))
			end
		end

		line = theLog:read()
	end
	
	logCursor = theLog:seek()
	theLog:close()
end
EID:AddCallback(ModCallbacks.MC_POST_UPDATE, CheckLogForItems)

-- figure out where to resume loading item descriptions when continuing a file
-- unfortunately, I'm not bothering to save descriptions if you close the game
local function GameStartTMTRAINER(_,isSave)
	local theLog = io.open(logLocation, "r")
	if (theLog == nil) then
		print("[EID] Could not find the log file at " .. logLocation .. "; glitched item descriptions won't work!")
		logFound = false
		return
	else
		logFound = true
	end
	spawnedItems = 0
	--[[if isSave then
		-- check what item ID we're on
		local config = Isaac.GetItemConfig()
		while config:GetCollectible(maxNumber - spawnedItems - 1) ~= nil do
			spawnedItems = spawnedItems + 1
		end
		-- if we exit and reload in a room with a new pedestal to spawn, that item's info is grabbable but spawnedItems would be too high
		spawnedItems = spawnedItems - CountLogItems()
		
		print("resuming at " .. (maxNumber - spawnedItems - 1))
	end]]
end
EID:AddCallback(ModCallbacks.MC_POST_GAME_STARTED, GameStartTMTRAINER)