local json = require "cjson"

local taskwarrior = {}

local function shellescape(str)
	return "'"..str:gsub([[']], [['"'"']]).."'"
end

function taskwarrior.import(...)
	local filters = {...}
	for i, filter in ipairs(filters) do
		filters[i] = shellescape(filter)
	end
	return json.decode(io.popen("task "..table.concat(filters, " ").." export"):read("*a"))
end

function taskwarrior.export(items)
	local handle = assert(io.popen("task import"))
	handle:write(json.encode(items))
	handle:close()
end

return taskwarrior