package main

import (
	"context"
	"flag"
	"fmt"
	"os"
	"path"

	"git.defalsify.org/vise.git/engine"
	"git.defalsify.org/vise.git/logging"
	"git.defalsify.org/vise.git/resource"
	"git.defalsify.org/vise.git/lang"
	"git.grassecon.net/urdt/ussd/config"
	"git.grassecon.net/urdt/ussd/initializers"
	"git.grassecon.net/urdt/ussd/internal/handlers"
	"git.grassecon.net/urdt/ussd/internal/storage"
	"git.grassecon.net/urdt/ussd/internal/args"
	"git.grassecon.net/urdt/ussd/remote"
	testdataloader "github.com/peteole/testdata-loader"
)

var (
	logg          = logging.NewVanilla()
	baseDir       = testdataloader.GetBasePath()
	scriptDir     = path.Join("services", "registration")
	menuSeparator = ": "
)

func init() {
	initializers.LoadEnvVariables(baseDir)
}

// TODO: external script automatically generate language handler list from select language vise code OR consider dynamic menu generation script possibility
func main() {
	config.LoadConfig()

	var connStr string
	var size uint
	var sessionId string
	var database string
	var dbSchema string
	var engineDebug bool
	var resourceDir string
	var err error
	var gettextDir string
	var langs args.LangVar

	flag.StringVar(&resourceDir, "resourcedir", scriptDir, "resource dir")
	flag.StringVar(&sessionId, "session-id", "075xx2123", "session id")
	flag.StringVar(&connStr, "c", "", "connection string")
	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
	flag.UintVar(&size, "s", 160, "max size of output")
	flag.StringVar(&gettextDir, "gettext", "", "use gettext translations from given directory")
	flag.Var(&langs, "language", "add symbol resolution for language")
	flag.Parse()

	if connStr != "" {
		connStr = config.DbConn
	}
	connData, err := storage.ToConnData(connStr)
	if err != nil {
		fmt.Fprintf(os.Stderr, "connstr err: %v", err)
		os.Exit(1)
	}

	logg.Infof("start command", "conn", connData, "outputsize", size)

	if len(langs.Langs()) == 0 {
		langs.Set(config.DefaultLanguage)
	}

	ctx := context.Background()
	ctx = context.WithValue(ctx, "SessionId", sessionId)
	ctx = context.WithValue(ctx, "Database", database)
	ctx = context.WithValue(ctx, "Schema", dbSchema)

	ln, err := lang.LanguageFromCode(config.DefaultLanguage)
	if err != nil {
		fmt.Fprintf(os.Stderr, "default language set error: %v", err)
		os.Exit(1)
	}
	ctx = context.WithValue(ctx, "Language", ln)

	pfp := path.Join(scriptDir, "pp.csv")

	cfg := engine.Config{
		Root:          "root",
		SessionId:     sessionId,
		OutputSize:    uint32(size),
		FlagCount:     uint32(128),
		MenuSeparator: menuSeparator,
	}

	menuStorageService := storage.NewMenuStorageService(connData, resourceDir)
	
	if gettextDir != "" {
		menuStorageService = menuStorageService.WithGettext(gettextDir, langs.Langs())
	}

	rs, err := menuStorageService.GetResource(ctx)
	if err != nil {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	pe, err := menuStorageService.GetPersister(ctx)
	if err != nil {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	userdatastore, err := menuStorageService.GetUserdataDb(ctx)
	if err != nil {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	dbResource, ok := rs.(*resource.DbResource)
	if !ok {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	lhs, err := handlers.NewLocalHandlerService(ctx, pfp, true, dbResource, cfg, rs)
	lhs.SetDataStore(&userdatastore)
	lhs.SetPersister(pe)

	if err != nil {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	accountService := remote.AccountService{}
	hl, err := lhs.GetHandler(&accountService)
	if err != nil {
		fmt.Fprintf(os.Stderr, err.Error())
		os.Exit(1)
	}

	en := lhs.GetEngine()
	en = en.WithFirst(hl.Init)
	if engineDebug {
		en = en.WithDebug(nil)
	}

	err = engine.Loop(ctx, en, os.Stdin, os.Stdout, nil)
	if err != nil {
		fmt.Fprintf(os.Stderr, "loop exited with error: %v\n", err)
		os.Exit(1)
	}
}