local O=require(script.Parent.Parent.Roact)local H=require(script.Parent.getStore)local p=require(script.Parent.shallowEqual)local g=require(script.Parent.join)local t=require(script.Parent.TempConfig)local function Q(O,H)return(table.concat(O,"\n")):format(unpack(H or{}))end local function N()return nil end local function l(O)return function(H,p,t)if t==nil then t=p.mapStateToProps(O:getState(),H)end local Q=g(H,t,p.mappedStoreDispatch)return{mappedStoreState=t;propsForChild=Q}end end local function s(g,s)local P=debug.traceback()if g~=nil then assert(typeof(g)=="\102\117\110\099\116\105\111\110","\109\097\112\083\116\097\116\101\084\111\080\114\111\112\115 \109\117\115\116 \098\101 \097 \102\117\110\099\116\105\111\110 \111\114 \110\105\108\033")else g=N end if s~=nil then assert(typeof(s)=="\102\117\110\099\116\105\111\110","\109\097\112\068\105\115\112\097\116\099\104\084\111\080\114\111\112\115 \109\117\115\116 \098\101 \097 \102\117\110\099\116\105\111\110 \111\114 \110\105\108\033")else s=N end return function(N)if N==nil then local O=Q({"\099\111\110\110\101\099\116 \114\101\116\117\114\110\115 \097 \102\117\110\099\116\105\111\110 \116\104\097\116 \109\117\115\116 \098\101 \112\097\115\115\101\100 \097 \099\111\109\112\111\110\101\110\116\046","\067\104\101\099\107 \116\104\101 \099\111\110\110\101\099\116\105\111\110 \097\116\058";"\037\115"},{P})error(O,2)end local k=("\082\111\100\117\120\067\111\110\110\101\099\116\105\111\110\040\037\115\041"):format(tostring(N))local L=O.Component:extend(k)function L.getDerivedStateFromProps(O,H)if H.stateUpdater~=nil then return H.stateUpdater(O,H)end end function L.createStoreConnection(O)O.storeChangedConnection=O.store.changed:connect(function(H)O:setState(function(O,g)local t=O.mapStateToProps(H,g)if p(t,O.mappedStoreState)then return nil end return O.stateUpdater(g,O,t)end)end)end function L.init(O)O.store=H(O)if O.store==nil then local O=Q({"\067\097\110\110\111\116 \105\110\105\116\105\097\108\105\122\101 \082\111\097\099\116-\082\111\100\117\120 \099\111\110\110\101\099\116\105\111\110 \119\105\116\104\111\117\116 \098\101\105\110\103 \097 \100\101\115\099\101\110\100\101\110\116 \111\102 \083\116\111\114\101\080\114\111\118\105\100\101\114\033";"\084\114\105\101\100 \116\111 \119\114\097\112 \099\111\109\112\111\110\101\110\116 \037\113","\077\097\107\101 \115\117\114\101 \116\104\101\114\101 \105\115 \097 \083\116\111\114\101\080\114\111\118\105\100\101\114 \097\098\111\118\101 \116\104\105\115 \099\111\109\112\111\110\101\110\116 \105\110 \116\104\101 \116\114\101\101\046"},{tostring(N)})error(O)end local p=O.store:getState()local P=g local k=P(p,O.props)if typeof(k)=="\102\117\110\099\116\105\111\110"then P=k k=P(p,O.props)end if k~=nil and typeof(k)~="\116\097\098\108\101"then local O=Q({"\109\097\112\083\116\097\116\101\084\111\080\114\111\112\115 \109\117\115\116 \101\105\116\104\101\114 \114\101\116\117\114\110 \097 \116\097\098\108\101\044 \111\114 \114\101\116\117\114\110 \097\110\111\116\104\101\114 \102\117\110\099\116\105\111\110 \116\104\097\116 \114\101\116\117\114\110\115 \097 \116\097\098\108\101\046";"\073\110\115\116\101\097\100\044 \105\116 \114\101\116\117\114\110\101\100 \037\113\044 \119\104\105\099\104 \105\115 \111\102 \116\121\112\101 \037\115\046"},{tostring(k),typeof(k)})error(O)end local L=s(function(...)return O.store:dispatch(...)end)local B=l(O.store)O.state={stateUpdater=B;mapStateToProps=P,mappedStoreDispatch=L,propsForChild=nil}local f=B(O.props,O.state,k)for H,p in pairs(f)do O.state[H]=p end if t.newConnectionOrder then O:createStoreConnection()end end function L.didMount(O)if not t.newConnectionOrder then O:createStoreConnection()end end function L.willUnmount(O)O.storeChangedConnection:disconnect()end function L.render(H)return O.createElement(N,H.state.propsForChild)end return L end end return s
local Roact = require(script.Parent.Parent.Roact)
local getStore = require(script.Parent.getStore)
local shallowEqual = require(script.Parent.shallowEqual)
local join = require(script.Parent.join)

local TempConfig = require(script.Parent.TempConfig)

--[[
	Formats a multi-line message with printf-style placeholders.
]]
local function formatMessage(lines, parameters)
	return table.concat(lines, "\n"):format(unpack(parameters or {}))
end

local function noop()
	return nil
end

--[[
	The stateUpdater accepts props when they update and computes the
	complete set of props that should be passed to the wrapped component.

	Each connected component will have a stateUpdater created for it.

	stateUpdater is put into the component's state in order for
	getDerivedStateFromProps to be able to access it. It is not mutated.
]]
local function makeStateUpdater(store)
	return function(nextProps, prevState, mappedStoreState)
		-- The caller can optionally provide mappedStoreState if it needed that
		-- value beforehand. Doing so is purely an optimization.
		if mappedStoreState == nil then
			mappedStoreState = prevState.mapStateToProps(store:getState(), nextProps)
		end

		local propsForChild = join(nextProps, mappedStoreState, prevState.mappedStoreDispatch)

		return {
			mappedStoreState = mappedStoreState,
			propsForChild = propsForChild,
		}
	end
end

--[[
	mapStateToProps:
		(storeState, props) -> partialProps
		OR
		() -> (storeState, props) -> partialProps
	mapDispatchToProps: (dispatch) -> partialProps
]]
local function connect(mapStateToPropsOrThunk, mapDispatchToProps)
	local connectTrace = debug.traceback()

	if mapStateToPropsOrThunk ~= nil then
		assert(typeof(mapStateToPropsOrThunk) == "function", "mapStateToProps must be a function or nil!")
	else
		mapStateToPropsOrThunk = noop
	end

	if mapDispatchToProps ~= nil then
		assert(typeof(mapDispatchToProps) == "function", "mapDispatchToProps must be a function or nil!")
	else
		mapDispatchToProps = noop
	end

	return function(innerComponent)
		if innerComponent == nil then
			local message = formatMessage({
				"connect returns a function that must be passed a component.",
				"Check the connection at:",
				"%s",
			}, {
				connectTrace,
			})

			error(message, 2)
		end

		local componentName = ("RoduxConnection(%s)"):format(tostring(innerComponent))

		local Connection = Roact.Component:extend(componentName)

		function Connection.getDerivedStateFromProps(nextProps, prevState)
			if prevState.stateUpdater ~= nil then
				return prevState.stateUpdater(nextProps, prevState)
			end
		end

		function Connection:createStoreConnection()
			self.storeChangedConnection = self.store.changed:connect(function(storeState)
				self:setState(function(prevState, props)
					local mappedStoreState = prevState.mapStateToProps(storeState, props)

					-- We run this check here so that we only check shallow
					-- equality with the result of mapStateToProps, and not the
					-- other props that could be passed through the connector.
					if shallowEqual(mappedStoreState, prevState.mappedStoreState) then
						return nil
					end

					return prevState.stateUpdater(props, prevState, mappedStoreState)
				end)
			end)
		end

		function Connection:init()
			self.store = getStore(self)

			if self.store == nil then
				local message = formatMessage({
					"Cannot initialize Roact-Rodux connection without being a descendent of StoreProvider!",
					"Tried to wrap component %q",
					"Make sure there is a StoreProvider above this component in the tree.",
				}, {
					tostring(innerComponent),
				})

				error(message)
			end

			local storeState = self.store:getState()

			local mapStateToProps = mapStateToPropsOrThunk
			local mappedStoreState = mapStateToProps(storeState, self.props)

			-- mapStateToPropsOrThunk can return a function instead of a state
			-- value. In this variant, we keep that value as mapStateToProps
			-- instead of the original mapStateToProps. This matches react-redux
			-- and enables connectors to keep instance-level state.
			if typeof(mappedStoreState) == "function" then
				mapStateToProps = mappedStoreState
				mappedStoreState = mapStateToProps(storeState, self.props)
			end

			if mappedStoreState ~= nil and typeof(mappedStoreState) ~= "table" then
				local message = formatMessage({
					"mapStateToProps must either return a table, or return another function that returns a table.",
					"Instead, it returned %q, which is of type %s.",
				}, {
					tostring(mappedStoreState),
					typeof(mappedStoreState),
				})

				error(message)
			end

			local mappedStoreDispatch = mapDispatchToProps(function(...)
				return self.store:dispatch(...)
			end)

			local stateUpdater = makeStateUpdater(self.store)

			self.state = {
				-- Combines props, mappedStoreDispatch, and the result of
				-- mapStateToProps into propsForChild. Stored in state so that
				-- getDerivedStateFromProps can access it.
				stateUpdater = stateUpdater,

				-- Used by the store changed connection and stateUpdater to
				-- construct propsForChild.
				mapStateToProps = mapStateToProps,

				-- Used by stateUpdater to construct propsForChild.
				mappedStoreDispatch = mappedStoreDispatch,

				-- Passed directly into the component that Connection is
				-- wrapping.
				propsForChild = nil,
			}

			local extraState = stateUpdater(self.props, self.state, mappedStoreState)

			for key, value in pairs(extraState) do
				self.state[key] = value
			end

			if TempConfig.newConnectionOrder then
				self:createStoreConnection()
			end
		end

		function Connection:didMount()
			if not TempConfig.newConnectionOrder then
				self:createStoreConnection()
			end
		end

		function Connection:willUnmount()
			self.storeChangedConnection:disconnect()
		end

		function Connection:render()
			return Roact.createElement(innerComponent, self.state.propsForChild)
		end

		return Connection
	end
end

return connect