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-- Loaders_Up.eyeonscript
--
-- quick script that searches for _v##### in your path and filename to find the current version # of your loaders
-- script cycles through all loaders and checks for a newer version of the same element by looking for an identical path 
-- 		were current version has been replaced with currentVersion+1
--
-- has only been tested with image sequences, and they must include a string _v####, 
-- 		sub-versions or decimal version #'s not tested
--
-- example fileName = 
-- 		[[Z:\project\shots\Ep215\VFX-01\elements\VFX-01_v02\1920x1080\AC_Element_v02.0000.dpx]]
--
-- 
-- written by : Fred Pienkos (fpienkos@gmail.com)
-- written    : October 16, 2012 for Eden FX (www.edenfx.com)
--
-- Updates
-- October 17, 2012 - Script now retains Global In and ClipstartTime settings.  Some loader settings get reset
--						when a loader's clip is refreshed.  These two I have hard coded to retain.
--
--
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count = 0
changed_count = 0
verbose = 0
SetActiveComp(comp)

print("")
print("#####################################################################################################")
print("-----------------------------------------------------------------------------------------------------")
print("					Loaders Up! by Fred Pienkos 2012")
print("-----------------------------------------------------------------------------------------------------")
loaders = GetLoaders(composition)

	for i=1, table.getn(loaders) do
		gIn = loaders[i]:GetAttrs().TOOLNT_Clip_Start[1]
		cliptimeStart = loaders[i]:GetAttrs().TOOLIT_Clip_TrimIn[1]
		skipped_increments = false
		fileName = loaders[i]:GetAttrs().TOOLST_Clip_Name[1]
		count = count+1
		if verbose == 1 then
			print("")
			print("Checking file : "..loaders[i]:GetAttrs().TOOLS_Name)
		end
		oldfile = eyeon.parseFilename(fileName)
		
		--find the _v in the filename, and extract the character location for the version number inside the string.
		vposStart, vposEnd = string.find(fileName, "_v%d+")
		vStart = string.find(fileName, "%d+", vposStart)

		--Set current version # in string (currently deducted by the first _v found in path string, which is preferrable to us.
		version = string.sub(fileName, vStart, vposEnd)
		newVersion = string.format("%0"..string.len(version).."d", version+1)
		newfileName = string.gsub(fileName, "_v"..version, "_v"..newVersion)

		newfileName2 = string.gsub(newfileName, "\\", "\\\\")
		newfile = eyeon.parseFilename (newfileName)
		if verbose == 1 then
			print("Old:"..fileName)
			print("New:"..newfileName)
		end
		
		-- Check to see if new version exists
		if fileexists(newfileName) then
		
			while fileexists(newfileName) do
				newVersion = string.format("%0"..string.len(version).."d", newVersion+1)
				newfileName = string.gsub(fileName, "_v"..version, "_v"..newVersion)
				newfileName2 = string.gsub(newfileName, "\\", "\\\\")
				
				if verbose == 1 then
					print("New:"..newfileName)
				end
				
				newfile = eyeon.parseFilename (newfileName)
				skipped_increments = true
			end

	
			if skipped_increments then
				newVersion = string.format("%0"..string.len(version).."d", newVersion-1)
				newfileName = string.gsub(fileName, "_v"..version, "_v"..newVersion)
				newfileName2 = string.gsub(newfileName, "\\", "\\\\")
				
				if verbose == 1 then
					print("New:"..newfileName)
				end 
				
				newfile = eyeon.parseFilename (newfileName)
				
				if (newVersion+0) >= (version+2) then
					ret = composition:AskUser("Multiple new versions exist!", {
						{"Description", "Text", 
						Default = "For "..loaders[i]:GetAttrs().TOOLS_Name.."\nOriginal version was v"..version.."\nNext available version is v"..newVersion.."\n\n"..
						"Do you want to increment to this version?", 
						ReadOnly = true,  Lines = 6 , Wrap=true} 
						} )
					if ret == nil then
						print("Aborted.")
						return
					end
				end
			end
		else
			print(loaders[i]:GetAttrs().TOOLS_Name .."	:	NO NEW VERSION.")
		end
		
	if verbose == 1 then
		print(fileName.. " and " ..newfileName)
	end

	if fileexists(newfileName2) then
		print(loaders[i]:GetAttrs().TOOLS_Name .."	:	**NEW VERSION** (v"..newVersion..")")
				--Check current file count in Original directory
		o = readdir(oldfile.Path.."\\*.*")
		oNum = table.getn(o)
		--Check current file count in new directory
		n = readdir(newfile.Path.."\\*.*")
		nNum = table.getn(n)
		
		if nNum == oNum then
			print("			Frame count is equal between versions ("..oNum..").  Repathing from v"..version.." to v"..newVersion)
			changed_count = changed_count +1
			comp:Lock()
			loaders[i].Clip = newfileName
			-- These lines reset the Global In and CLip Start time to previous settings
			loaders[i].GlobalIn[TIME_UNDEFINED] = gIn
			loaders[i].ClipTimeStart[TIME_UNDEFINED] = cliptimeStart
				
			comp:Unlock()
		else
			s = comp:AskUser("FRAME COUNT DOESN'T MATCH", {{"Error", "Text", Default = 
				"For "..loaders[i]:GetAttrs().TOOLS_Name.."\n			Frame count differs from v"..version.." ("..oNum..") to  v"..newVersion.." ("..nNum..").\nClick OK to version up anyway.\nCancel aborts this process.", Lines = 6 }})
			if s then 
				comp:Lock()
				loaders[i].Clip = newfileName
				-- These lines reset the Global In and CLip Start time to previous settings
				loaders[i].GlobalIn[TIME_UNDEFINED] = gIn
				loaders[i].ClipTimeStart[TIME_UNDEFINED] = cliptimeStart
				changed_count = changed_count + 1
				comp:Unlock()
				print("		Repathing from v"..version.." to v"..newVersion.." ***Clip Length Changed! (" ..nNum.." frames)***")
			else
			--print("frame count is different from version "..version.." ("..oNum..") and "..newVersion.." ("..nNum..").  Changing nothing.")
			end
		end
	else
		--print(loaders[i]:GetAttrs().TOOLS_Name .." does not have a new version. v"..version.." is the most recent version.")		
	end
print("-----------------------------------------------------------------------------------------------------")		
end

if changed_count == 0 then
		ret = composition:AskUser("LoaderUp Results", {
				{"Description", "Text", 
				Default = changed_count.. " out of " ..count.. " loaders we LoaderUp'd.", 
				ReadOnly = true,  Lines = 4 , Wrap=true} 
				} )
			if ret == nil then
				print("Aborted.")
				--dofile [[S:\2d\eyeon\scripts\Comp\.EdenFX\.SubVersion_Up_Comp.eyeonscript]]
				return
			end
		else
		ret = composition:AskUser("LoaderUp Results", {
				{"Description", "Text", 
				Default = changed_count.. " out of " ..count.. " loaders we LoaderUp'd. \nSee console window for statistics\n\n", 
				ReadOnly = true,  Lines = 5 , Wrap=true} 
				} )
			if ret == nil then
				print("Aborted.")
				return
			end
		end
		
print("#####################################################################################################")