--[=[
	Promise resolution procedure, resolves the given values

	@param ... T
]=]

function Promise:Resolve(...)
	if not self._pendingExecuteList then
		return
	end

	local len = select("#", ...)
	if len == 0 then
		self:_fulfill({}, 0)
	elseif self == (...) then
		self:Reject("TypeError: Resolved to self")
	elseif Promise.isPromise(...) then
		if len > 1 then
			local message = ("When resolving a promise, extra arguments are discarded! See:\n\n%s")
				:format(self._source)
			warn(message)
		end

		local promise2 = (...)
		if promise2._pendingExecuteList then -- pending
			promise2._unconsumedException = false
			promise2._pendingExecuteList[#promise2._pendingExecuteList + 1] = {
				function(...)
					self:Resolve(...)
				end,
				function(...)
					-- Still need to verify at this point that we're pending!
					if self._pendingExecuteList then
						self:_reject({...}, select("#", ...))
					end
				end,
				nil
			}
		elseif promise2._rejected then -- rejected
			promise2._unconsumedException = false
			self:_reject(promise2._rejected, promise2._valuesLength)
		elseif promise2._fulfilled then -- fulfilled
			self:_fulfill(promise2._fulfilled, promise2._valuesLength)
		else
			error("[Promise.Resolve] - Bad promise2 state")
		end
	elseif type(...) == "function" then
		if len > 1 then
			local message = ("When resolving a function, extra arguments are discarded! See:\n\n%s")
				:format(self._source)
			warn(message)
		end

		local func = ...
		func(self:_getResolveReject())
	else
		-- TODO: Handle thenable promises!
		-- Problem: Lua has :andThen() and also :Then() as two methods in promise
		-- implementations.
		self:_fulfill({...}, len)
	end
end
