package gluanetrc

import (
	"os"
	"path/filepath"

	"github.com/dickeyxxx/netrc"
	lua "github.com/yuin/gopher-lua"
	luar "layeh.com/gopher-luar"
)

var n *netrc.Netrc

func init() {
	var err error

	fname := filepath.Join(os.Getenv("HOME"), ".netrc")

	fout, err := os.Create(fname)
	if err != nil {
		panic(err)
	}
	fout.Close()

	n, err = netrc.Parse(filepath.Join(fname))
	if err != nil {
		panic(err)
	}
}

var exports = map[string]lua.LGFunction{
	"machine":        machine,
	"save":           save,
	"remove_machine": removeMachine,
	"add_machine":    addMachine,
}

func addMachine(L *lua.LState) int {
	name := L.ToString(1)
	login := L.ToString(2)
	password := L.ToString(3)

	n.AddMachine(name, login, password)

	L.Push(luar.New(L, n.Machine(name)))
	return 1
}

func removeMachine(L *lua.LState) int {
	name := L.ToString(1)

	n.RemoveMachine(name)

	return 0
}

func machine(L *lua.LState) int {
	name := L.ToString(1)

	m := n.Machine(string(name))

	L.Push(luar.New(L, m))
	return 1
}

func save(L *lua.LState) int {
	n.Save()
	return 0
}

// Preload loads netrc into a gopher-lua's LState module registry.
func Preload(L *lua.LState) {
	L.PreloadModule("netrc", Loader)
}

// Loader loads the netrc modules.
func Loader(L *lua.LState) int {
	mod := L.SetFuncs(L.NewTable(), exports)
	L.Push(mod)
	return 1
}