package build

import (
	"os"
	"strings"

	lua "github.com/yuin/gopher-lua"
)

func (container Container) lRemove(L *lua.LState) int {
	filename := L.CheckString(1)

	err := container.FS.RemoveAll(filename)
	if err != nil {
		L.Push(lua.LFalse)
		L.Push(lua.LString(err.Error()))
		return 2
	}
	L.Push(lua.LTrue)
	L.Push(lua.LNil)
	return 2
}

func (container Container) lRename(L *lua.LState) int {
	oldname := L.CheckString(1)
	newname := L.CheckString(2)

	if err := container.FS.Rename(oldname, newname); err != nil {
		L.Push(lua.LFalse)
		L.Push(lua.LString(err.Error()))
		return 2
	}

	L.Push(lua.LTrue)
	return 1
}
func (container Container) lCopy(L *lua.LState) int {
	oldname := L.CheckString(1)
	newname := L.CheckString(2)

	if err := container.copyContainer(oldname, newname); err != nil {
		L.Push(lua.LFalse)
		L.Push(lua.LString(err.Error()))
		return 2
	}

	L.Push(lua.LTrue)
	L.Push(lua.LNil)
	return 2

}

func modeFlags(mode string) int {
	switch mode {
	case "r", "rb":
		return os.O_RDONLY
	case "w", "wb":
		return os.O_CREATE | os.O_WRONLY | os.O_TRUNC
	case "a", "ab":
		return os.O_CREATE | os.O_WRONLY | os.O_APPEND
	case "r+", "r+b", "rb+", "br+":
		return os.O_RDWR
	case "w+", "w+b", "wb+", "bw+":
		return os.O_CREATE | os.O_RDWR | os.O_TRUNC
	case "a+", "a+b", "ab+", "ba+":
		return os.O_CREATE | os.O_RDWR | os.O_APPEND
	default:
		return os.O_RDONLY
	}
}

func (container Container) lOpen(L *lua.LState) int {
	path := L.CheckString(1)
	mode := L.OptString(2, "r")

	file, err := container.FS.OpenFile(path, modeFlags(mode), 0644)
	if err != nil {
		L.Push(lua.LNil)
		L.Push(lua.LString(err.Error()))
		return 2
	}

	ud := L.NewUserData()
	ud.Value = file
	L.SetMetatable(ud, L.GetTypeMetatable("file"))
	L.Push(ud)
	L.Push(lua.LNil)
	return 2
}

func (container Container) lMkdir(L *lua.LState) int {
	path := L.CheckString(1)
	perm := L.CheckInt(2)

	if err := container.FS.MkdirAll(path, os.FileMode(perm)); err != nil {
		L.Push(lua.LFalse)
		L.Push(lua.LString(err.Error()))
		return 2
	}

	L.Push(lua.LTrue)
	L.Push(lua.LNil)
	return 2
}

func (container Container) lexecute(L *lua.LState) {
	cmdString := L.CheckString(1)

	cmdSlice := strings.Fields(cmdString)
}

func (container Container) GetLuaState() error {

	lua.NewState(lua.Options{})
	return nil
}