package plugins

import (
	"fmt"

	"git.mstar.dev/mstar/goutils/other"
	"github.com/PeerDB-io/gluabit32"
	"github.com/cjoudrey/gluahttp"
	"github.com/cosmotek/loguago"
	"github.com/kohkimakimoto/gluatemplate"
	gluajson "github.com/layeh/gopher-json"
	"github.com/rs/zerolog/log"
	"github.com/yuin/gluare"
	lua "github.com/yuin/gopher-lua"

	webshared "git.mstar.dev/mstar/linstrom/web/shared"
)

// "github.com/CuberL/glua-async" // For async support, see module readme for how to
// Use "github.com/layeh/gopher-luar" for implementing interface

// Create a new "blank" lua state for future use.
// Each created state has to be properly closed.
// A "blank" state has the base libraries preloaded and is technically ready to use.
// Plugin specific functions and data is not yet included
func NewBlankState() (*lua.LState, error) {
	l := lua.NewState()
	for _, pair := range []struct {
		n string
		f lua.LGFunction
	}{
		{lua.LoadLibName, lua.OpenPackage}, // Must always be first
		{lua.BaseLibName, lua.OpenBase},
		{lua.TabLibName, lua.OpenTable},
		// {lua.IoLibName, lua.OpenIo},
		{lua.OsLibName, lua.OpenOs},
		{lua.StringLibName, lua.OpenString},
		{lua.MathLibName, lua.OpenMath},
		// {lua.DebugLibName, lua.OpenDebug},
		{lua.ChannelLibName, lua.OpenChannel},
		{lua.CoroutineLibName, lua.OpenCoroutine},
		{"bit32", gluabit32.Loader},
		{"json", gluajson.Loader},
		{"log", loguago.NewLogger(log.Logger).Loader},                     // TODO: Decide if used logger should be passed in via context
		{"http", gluahttp.NewHttpModule(&webshared.RequestClient).Loader}, // TODO: Modify this to support signing
		{"re", gluare.Loader},
		{"texttemplate", gluatemplate.Loader}, // TODO: Copy this lib, but modify to use html/template instead
	} {
		if err := l.CallByParam(lua.P{
			Fn:      l.NewFunction(pair.f),
			NRet:    0,
			Protect: true,
		}, lua.LString(pair.n)); err != nil {
			return nil, other.Error(
				"plugins",
				fmt.Sprintf("Failed to preload lua library %q into state", pair.n),
				err,
			)
		}
	}
	return l, nil
}