local C=require(script.Parent.Util)local function O(C)for O,V in ipairs({"\037\046";"\037\063";"\037\042";"\037\042\037\042"})do C=C:gsub("\092"..V,V:gsub("\037\037",""))end return C end local V={}V.__index=V function V.new(O,L,j)local W={Command=O;Type=nil,Name=L.Name,Object=L,Required=L.Default==nil and L.Optional~=true,Executor=O.Executor,RawValue=j,RawSegments={};TransformedValues={};Prefix="",TextSegmentInProgress="",RawSegmentsAreAutocomplete=false}if type(L.Type)=="\116\097\098\108\101"then W.Type=L.Type else local V,y,I=C.ParsePrefixedUnionType(O.Cmdr.Registry:GetTypeName(L.Type),j)W.Type=O.Dispatcher.Registry:GetType(V)W.RawValue=y W.Prefix=I if W.Type==nil then error(string.format("\037\115 \104\097\115 \097\110 \117\110\114\101\103\105\115\116\101\114\101\100 \116\121\112\101 \037\113",W.Name or"\060\110\111\110\101\062",V or"\060\110\111\110\101\062"))end end setmetatable(W,V)W:Transform()return W end function V.GetDefaultAutocomplete(C)if C.Type.Autocomplete then local O,V=C.Type.Autocomplete(C:TransformSegment(""))return O,V or{}end return{}end function V.Transform(V)if#V.TransformedValues~=0 then return end local L=V.RawValue if V.Type.ArgumentOperatorAliases then L=V.Type.ArgumentOperatorAliases[L]or L end if L=="\046"and V.Type.Default then L=V.Type.Default(V.Executor)or""V.RawSegmentsAreAutocomplete=true end if L=="\063"and V.Type.Autocomplete then local C,O=V:GetDefaultAutocomplete()if not O.IsPartial and#C>0 then L=C[math.random(1,#C)]V.RawSegmentsAreAutocomplete=true end end if V.Type.Listable and#V.RawValue>0 then local j=L:match("\094\037\063\040\037\100\043\041\036")if j then local C=tonumber(j)if C and C>0 then local O={}local j,W=V:GetDefaultAutocomplete()if not W.IsPartial and#j>0 then for C=1,math.min(C,#j),1 do table.insert(O,table.remove(j,math.random(1,#j)))end L=table.concat(O,"\044")V.RawSegmentsAreAutocomplete=true end end elseif L=="\042"or L=="\042\042"then local C,O=V:GetDefaultAutocomplete()if not O.IsPartial and#C>0 then if L=="\042\042"and V.Type.Default then local O=V.Type.Default(V.Executor)or""for V,L in ipairs(C)do if L==O then table.remove(C,V)end end end L=table.concat(C,"\044")V.RawSegmentsAreAutocomplete=true end end L=O(L)local W=C.SplitStringSimple(L,"\044")if#W==0 then W={""}end if L:sub(#L,#L)=="\044"then W[#W+1]=""end for C,O in ipairs(W)do V.RawSegments[C]=O V.TransformedValues[C]={V:TransformSegment(O)}end V.TextSegmentInProgress=W[#W]else L=O(L)V.RawSegments[1]=O(L)V.TransformedValues[1]={V:TransformSegment(L)}V.TextSegmentInProgress=V.RawValue end end function V.TransformSegment(O,C)if O.Type.Transform then return O.Type.Transform(C,O.Executor)else return C end end function V.GetTransformedValue(O,C)return unpack(O.TransformedValues[C])end function V.Validate(O,C)if O.RawValue==nil or#O.RawValue==0 and O.Required==false then return true end if O.Required and(O.RawSegments[1]==nil or#O.RawSegments[1]==0)then return false,"\084\104\105\115 \097\114\103\117\109\101\110\116 \105\115 \114\101\113\117\105\114\101\100\046"end if O.Type.Validate or O.Type.ValidateOnce then for V=1,#O.TransformedValues,1 do if O.Type.Validate then local C,L=O.Type.Validate(O:GetTransformedValue(V))if not C then return C,L or"\073\110\118\097\108\105\100 \118\097\108\117\101"end end if C and O.Type.ValidateOnce then local C,L=O.Type.ValidateOnce(O:GetTransformedValue(V))if not C then return C,L end end end return true else return true end end function V.GetAutocomplete(C)if C.Type.Autocomplete then return C.Type.Autocomplete(C:GetTransformedValue(#C.TransformedValues))else return{}end end function V.ParseValue(O,C)if O.Type.Parse then return O.Type.Parse(O:GetTransformedValue(C))else return O:GetTransformedValue(C)end end function V.GetValue(C)if#C.RawValue==0 and(not C.Required and C.Object.Default~=nil)then return C.Object.Default end if not C.Type.Listable then return C:ParseValue(1)end local O={}for V=1,#C.TransformedValues,1 do local L=C:ParseValue(V)if type(L)~="\116\097\098\108\101"then error(("\076\105\115\116\097\098\108\101 \116\121\112\101\115 \109\117\115\116 \114\101\116\117\114\110 \097 \116\097\098\108\101 \102\114\111\109 \080\097\114\115\101 \040\037\115\041"):format(C.Type.Name))end for C,V in pairs(L)do O[V]=true end end local V={}for C in pairs(O)do V[#V+1]=C end return V end return V
local Util = require(script.Parent.Util)

local function unescapeOperators(text)
	for _, operator in ipairs({"%.", "%?", "%*", "%*%*"}) do
		text = text:gsub("\\" .. operator, operator:gsub("%%", ""))
	end

	return text
end

local Argument = {}
Argument.__index = Argument

--// Returns a new ArgumentContext, an object that handles parsing and validating arguments
function Argument.new (command, argumentObject, value)
	local self = {
		Command = command; -- The command that owns this argument
		Type = nil; -- The type definition
		Name = argumentObject.Name; -- The name for this specific argument
		Object = argumentObject; -- The raw ArgumentObject (definition)
		Required = argumentObject.Default == nil and argumentObject.Optional ~= true; -- If the argument is required or not.
		Executor = command.Executor; -- The player who is running the command
		RawValue = value; -- The raw, unparsed value
		RawSegments = {}; -- The raw, unparsed segments (if the raw value was comma-sep)
		TransformedValues = {}; -- The transformed value (generated later)
		Prefix = ""; -- The prefix for this command (%Team)
		TextSegmentInProgress = ""; -- The text of the raw segment the user is currently typing.
		RawSegmentsAreAutocomplete = false;
	}

	if type(argumentObject.Type) == "table" then
		self.Type = argumentObject.Type
	else
		local parsedType, parsedRawValue, prefix = Util.ParsePrefixedUnionType(
			command.Cmdr.Registry:GetTypeName(argumentObject.Type),
			value
		)

		self.Type = command.Dispatcher.Registry:GetType(parsedType)
		self.RawValue = parsedRawValue
		self.Prefix = prefix

		if self.Type == nil then
			error(string.format("%s has an unregistered type %q", self.Name or "<none>", parsedType or "<none>"))
		end
	end

	setmetatable(self, Argument)

	self:Transform()

	return self
end

function Argument:GetDefaultAutocomplete()
	if self.Type.Autocomplete then
		local strings, options = self.Type.Autocomplete(self:TransformSegment(""))
		return strings, options or {}
	end

	return {}
end

--// Calls the transform function on this argument.
-- The return value(s) from this function are passed to all of the other argument methods.
-- Called automatically at instantiation
function Argument:Transform()
	if #self.TransformedValues ~= 0 then
		return
	end

	local rawValue = self.RawValue
	if self.Type.ArgumentOperatorAliases then
		rawValue = self.Type.ArgumentOperatorAliases[rawValue] or rawValue
	end

	if rawValue == "." and self.Type.Default then
		rawValue = self.Type.Default(self.Executor) or ""
		self.RawSegmentsAreAutocomplete = true
	end

	if rawValue == "?" and self.Type.Autocomplete then
		local strings, options = self:GetDefaultAutocomplete()

		if not options.IsPartial and #strings > 0 then
			rawValue = strings[math.random(1, #strings)]
			self.RawSegmentsAreAutocomplete = true
		end

	end

	if self.Type.Listable and #self.RawValue > 0 then
		local randomMatch = rawValue:match("^%?(%d+)$")
		if randomMatch then
			local maxSize = tonumber(randomMatch)

			if maxSize and maxSize > 0 then
				local items = {}
				local remainingItems, options = self:GetDefaultAutocomplete()

				if not options.IsPartial and #remainingItems > 0 then
					for _ = 1, math.min(maxSize, #remainingItems) do
						table.insert(items, table.remove(remainingItems, math.random(1, #remainingItems)))
					end

					rawValue = table.concat(items, ",")
					self.RawSegmentsAreAutocomplete = true
				end
			end
		elseif rawValue == "*" or rawValue == "**" then
			local strings, options = self:GetDefaultAutocomplete()

			if not options.IsPartial and #strings > 0 then
				if rawValue == "**" and self.Type.Default then
					local defaultString = self.Type.Default(self.Executor) or ""

					for i, string in ipairs(strings) do
						if string == defaultString then
							table.remove(strings, i)
						end
					end
				end

				rawValue = table.concat(
					strings,
					","
				)
				self.RawSegmentsAreAutocomplete = true
			end
		end

		rawValue = unescapeOperators(rawValue)

		local rawSegments = Util.SplitStringSimple(rawValue, ",")

		if #rawSegments == 0 then
			rawSegments = {""}
		end

		if rawValue:sub(#rawValue, #rawValue) == "," then
			rawSegments[#rawSegments + 1] = "" -- makes auto complete tick over right after pressing ,
		end

		for i, rawSegment in ipairs(rawSegments) do
			self.RawSegments[i] = rawSegment
			self.TransformedValues[i] = { self:TransformSegment(rawSegment) }
		end

		self.TextSegmentInProgress = rawSegments[#rawSegments]
	else
		rawValue = unescapeOperators(rawValue)

		self.RawSegments[1] = unescapeOperators(rawValue)
		self.TransformedValues[1] = { self:TransformSegment(rawValue) }
		self.TextSegmentInProgress = self.RawValue
	end
end

function Argument:TransformSegment(rawSegment)
	if self.Type.Transform then
		return self.Type.Transform(rawSegment, self.Executor)
	else
		return rawSegment
	end
end

--// Returns whatever the Transform method gave us.
function Argument:GetTransformedValue(segment)
	return unpack(self.TransformedValues[segment])
end

--// Validates that the argument will work without any type errors.
function Argument:Validate(isFinal)
	if self.RawValue == nil or #self.RawValue == 0 and self.Required == false then
		return true
	end

	if self.Required and (self.RawSegments[1] == nil or #self.RawSegments[1] == 0) then
		return false, "This argument is required."
	end

	if self.Type.Validate or self.Type.ValidateOnce then
		for i = 1, #self.TransformedValues do
			if self.Type.Validate then
				local valid, errorText = self.Type.Validate(self:GetTransformedValue(i))

				if not valid then
					return valid, errorText or "Invalid value"
				end
			end

			if isFinal and self.Type.ValidateOnce then
				local validOnce, errorTextOnce = self.Type.ValidateOnce(self:GetTransformedValue(i))

				if not validOnce then
					return validOnce, errorTextOnce
				end
			end
		end

		return true
	else
		return true
	end
end

--// Gets a list of all possible values that could match based on the current value.
function Argument:GetAutocomplete()
	if self.Type.Autocomplete then
		return self.Type.Autocomplete(self:GetTransformedValue(#self.TransformedValues))
	else
		return {}
	end
end

function Argument:ParseValue(i)
	if self.Type.Parse then
		return self.Type.Parse(self:GetTransformedValue(i))
	else
		return self:GetTransformedValue(i)
	end
end

--// Returns the final value of the argument.
function Argument:GetValue()
	if #self.RawValue == 0 and not self.Required and self.Object.Default ~= nil then
		return self.Object.Default
	end

	if not self.Type.Listable then
		return self:ParseValue(1)
	end

	local values = {}

	for i = 1, #self.TransformedValues do
		local parsedValue = self:ParseValue(i)

		if type(parsedValue) ~= "table" then
			error(("Listable types must return a table from Parse (%s)"):format(self.Type.Name))
		end

		for _, value in pairs(parsedValue) do
			values[value] = true -- Put them into a dictionary to ensure uniqueness
		end
	end

	local valueArray = {}

	for value in pairs(values) do
		valueArray[#valueArray + 1] = value
	end

	return valueArray
end

return Argument
