Refactor convert.luau for external uses

src/convert.luau

@@ -32,13 +32,7 @@ local function headMeshFromHumanoidDescription(humDesc: HumanoidDescription): nu
 	return meshByName["RobloxClassic"]
 end
 
-function convert.convertCharacter(humanoid: Humanoid): ()
+function convert.applyHeadDescription(humDesc: HumanoidDescription): ()
-	local humDesc = humanoid:GetAppliedDescription()
-	if humDesc == nil then
-		warn(`rbx-reface: could not get applied description for {humanoid.Parent.Name}`)
-		return
-	end
-
 	local currentMesh = humDesc.Head
 	local targetMesh = headMeshFromHumanoidDescription(humDesc)
 	local face = faceByMesh[currentMesh]
@@ -50,16 +44,10 @@ function convert.convertCharacter(humanoid: Humanoid): ()
 
 	humDesc.Head = targetMesh
 	humDesc.Face = face
+	return targetMesh, face
+end
 
-	local ok, err = pcall(function()
+function convert.fixHeadTexture(humanoid: Humanoid, targetMesh: number): ()
-		humanoid:ApplyDescriptionResetAsync(humDesc)
-	end)
-
-	if not ok then
-		warn(`rbx-reface: failed to apply description: {err}`)
-		return
-	end
-
 	-- iBot's texture is not correctly restored
 	if targetMesh == meshByName["iBot"] then
 		local head = humanoid.Parent:FindFirstChild("Head")
@@ -71,4 +59,25 @@ function convert.convertCharacter(humanoid: Humanoid): ()
 	end
 end
 
+function convert.convertCharacter(humanoid: Humanoid): ()
+	local humDesc = humanoid:GetAppliedDescription()
+	if humDesc == nil then
+		warn(`rbx-reface: could not get applied description for {humanoid.Parent.Name}`)
+		return
+	end
+
+	local targetMesh = convert.applyHeadDescription(humDesc)
+
+	local ok, err = pcall(function()
+		humanoid:ApplyDescriptionResetAsync(humDesc)
+	end)
+
+	if not ok then
+		warn(`rbx-reface: failed to apply description: {err}`)
+		return
+	end
+
+	convert.fixHeadTexture(humanoid, targetMesh)
+end
+
 return convert