local M = {}

cmdsList = nil

function M.checkCommand(cmd, desc)
	local toRun = ""

	if IS_UNIX then
		toRun = "command -v " .. cmd
	else
		toRun = "where " .. cmd
	end

	local p = io.popen(toRun)
	local output = p:read("*l")
	p:close()

	if output == nil and desc ~= nil and desc ~= "" then
		vim.api.nvim_echo({ { " ✗ " .. cmd .. " [" .. desc .. "] - not found!", "DiagnosticError" } }, true, {})
	elseif output == nil then
		vim.api.nvim_echo({ { " ✗ " .. cmd .. " not found!", "DiagnosticError" } }, true, {})
	else
		vim.api.nvim_echo({ { " ✓ " .. cmd, "DiagnosticOk" } }, true, {})
	end
end

function M.run()
  print("Check installed system commands:")
	for i, cmd in ipairs(cmdsList) do
		M.checkCommand(cmd.cmd, cmd.desc)
	end
end

function M.setup(cmds)
	IS_UNIX = package.config:sub(1, 1) ~= "\\"
	cmdsList = cmds
	vim.api.nvim_create_user_command("DependenciesCheck", M.run, {})
end

return M