catalyst

#!/bin/lua

-- The following is a cursed alternative to the current shebang, but it 
-- (probably) guarantees the correct path
-- #!/usr/bin/env -S sh -c 'RP="$(realpath "$0")"; cd "$(dirname "$RP")"; exec /bin/lua "$RP"'

-- 

local options = require("lua.option")

-- Exit early if bad script params (show usage blob)
local _, options_err = options:GetError()
if not options_err then
	_, options_err = options:Verify()
end
if options_err then
	print(options_err)
	options:Usage()
	return
end

-- Exit early if bad script env
local env = require("lua.env") -- Will assert in the main chunk!

-- Exit early if bad config spec
-- TODO: Do we want to check all spec files or just selected ones?
-- local features = require("lua.feature")
-- if features.error() then
	-- print(features.error())
	-- return
-- end

--

-- Script env good to go!
print("└── >>> CATALYST CONFIG HELPER\n")
-- print("───────────────────────────────────")
options:Dump()

-- Check for additional early-exit conditions
if options.mode == "USAGE" then
	print("───────────────────────────────────")
	options:Usage()
	return
elseif options.mode == "TEST" then
	print("───────────────────────────────────")
	require("lua.test")
	return
end

local manager = require("lua.manager")
-- Current use case means that any other option will at least build a feature
-- list and check the setup of those features
manager:ProcessSystem(options.system) -- NOTE: Specify only common features by setting the target system to NONE
manager:ModifySelected(options.features) -- Perform the initial list modification (per script argument)

if options.script then
	manager:PrintSelected()
	print() -- Formatting
else
	-- Prompt user for modifications
	manager:InteractiveSelect()
end

-- 

-- CORE "ACTUALLY DOES THE THING" LOOP

print("reminder to myself that the main file is truncated!!")
do return end

local did_something = false -- Just for friendly output
for feat, spec in pairs(features) do
	print("── INSTALLING", feat)
	local feature_dir = repo_dir .. "/" .. feat

	-- Copy/link common files (copy is TODO)
	local common_files = spec.location
	if type(common_files) == "string" then
		common_files = { ["."] = common_files }
	end
	if type(common_files) == "table" then
		for file, install_location in pairs(common_files) do
			local link_target = feature_dir .. "/common/" .. file

			-- While this would be a valid path, it means that a string was
			-- empty when it should not have been
			assert(not link_target:match("//"))

			local cmd = string.format("ln -s %s %s", link_target, install_location)
			print(cmd)
		end


	end

	did_something = true
end

if not did_something then
	print("No features were selected :(")
	return
end