local v=require(script.Parent.TestEnum)local E={}E.__index=E function E.new()local v={_stack={}}return setmetatable(v,E)end function E.getBeforeEachHooks(E)local n=v.NodeType.BeforeEach local f={}for v,E in ipairs(E._stack)do for v,E in ipairs(E[n])do table.insert(f,E)end end return f end function E.getAfterEachHooks(E)local n=v.NodeType.AfterEach local f={}for v,E in ipairs(E._stack)do for v,E in ipairs(E[n])do table.insert(f,1,E)end end return f end function E.popHooks(v)table.remove(v._stack,#v._stack)end function E.pushHooksFrom(n,E)assert(E~=nil)table.insert(n._stack,{[v.NodeType.BeforeAll]=n:_getHooksOfType(E.children,v.NodeType.BeforeAll),[v.NodeType.AfterAll]=n:_getHooksOfType(E.children,v.NodeType.AfterAll),[v.NodeType.BeforeEach]=n:_getHooksOfType(E.children,v.NodeType.BeforeEach),[v.NodeType.AfterEach]=n:_getHooksOfType(E.children,v.NodeType.AfterEach)})end function E.getBeforeAllHooks(E)return E._stack[#E._stack][v.NodeType.BeforeAll]end function E.getAfterAllHooks(E)return E._stack[#E._stack][v.NodeType.AfterAll]end function E._getHooksOfType(n,v,E)local f={}for v,n in ipairs(v)do if n.type==E then table.insert(f,n.callback)end end return f end return E
local TestEnum = require(script.Parent.TestEnum)

local LifecycleHooks = {}
LifecycleHooks.__index = LifecycleHooks

function LifecycleHooks.new()
	local self = {
		_stack = {},
	}
	return setmetatable(self, LifecycleHooks)
end

--[[
	Returns an array of `beforeEach` hooks in FIFO order
]]
function LifecycleHooks:getBeforeEachHooks()
	local key = TestEnum.NodeType.BeforeEach
	local hooks = {}

	for _, level in ipairs(self._stack) do
		for _, hook in ipairs(level[key]) do
			table.insert(hooks, hook)
		end
	end

	return hooks
end

--[[
	Returns an array of `afterEach` hooks in FILO order
]]
function LifecycleHooks:getAfterEachHooks()
	local key = TestEnum.NodeType.AfterEach
	local hooks = {}

	for _, level in ipairs(self._stack) do
		for _, hook in ipairs(level[key]) do
			table.insert(hooks, 1, hook)
		end
	end

	return hooks
end

--[[
	Pushes uncalled beforeAll and afterAll hooks back up the stack
]]
function LifecycleHooks:popHooks()
	table.remove(self._stack, #self._stack)
end

function LifecycleHooks:pushHooksFrom(planNode)
	assert(planNode ~= nil)

	table.insert(self._stack, {
		[TestEnum.NodeType.BeforeAll] = self:_getHooksOfType(planNode.children, TestEnum.NodeType.BeforeAll),
		[TestEnum.NodeType.AfterAll] = self:_getHooksOfType(planNode.children, TestEnum.NodeType.AfterAll),
		[TestEnum.NodeType.BeforeEach] = self:_getHooksOfType(planNode.children, TestEnum.NodeType.BeforeEach),
		[TestEnum.NodeType.AfterEach] = self:_getHooksOfType(planNode.children, TestEnum.NodeType.AfterEach),
	})
end

--[[
	Get the beforeAll hooks from the current level.
]]
function LifecycleHooks:getBeforeAllHooks()
	return self._stack[#self._stack][TestEnum.NodeType.BeforeAll]
end

--[[
	Get the afterAll hooks from the current level.
]]
function LifecycleHooks:getAfterAllHooks()
	return self._stack[#self._stack][TestEnum.NodeType.AfterAll]
end

function LifecycleHooks:_getHooksOfType(nodes, key)
	local hooks = {}

	for _, node in ipairs(nodes) do
		if node.type == key then
			table.insert(hooks, node.callback)
		end
	end

	return hooks
end

return LifecycleHooks
