package handlers

import (
	"github.com/aziis98/lupus-lite/auth"
	"github.com/aziis98/lupus-lite/database"
	"github.com/aziis98/lupus-lite/events"
	"github.com/aziis98/lupus-lite/model"
	"github.com/aziis98/lupus-lite/util"
)

type Handler interface {
	DebugDatabase() any

	UserForSession(token string) (model.User, error)

	Login(username, password string) (string, error)
	Register(username, password, password2 string) error

	Partite() PartiteHandler
}

type server struct {
	DB   database.Database
	Auth auth.AuthService

	partiteHandler *partiteHandler
}

func NewServer(
	db database.Database,
	authServiceFunc func(database.Database) auth.AuthService) Handler {

	auth := authServiceFunc(db)

	s := &server{
		DB:   db,
		Auth: auth,
	}

	s.partiteHandler = &partiteHandler{
		server:   s,
		eventBus: events.NewEventBus(),
	}

	return s
}

func (s *server) DebugDatabase() any {
	return s.DB
}

func (s *server) UserForSession(token string) (model.User, error) {
	username, err := s.Auth.UserForSession(token)
	if err != nil {
		return model.User{}, err
	}

	user, err := s.DB.GetUser(username)
	if err != nil {
		return model.User{}, err
	}

	return user, nil
}

func (s *server) Login(username, password string) (string, error) {
	return s.Auth.Login(username, password)
}

func (s *server) Register(username, password, password2 string) error {
	if err := util.ValidateUsername(username); err != nil {
		return err
	}
	if err := util.ValidatePasswords(password, password2); err != nil {
		return err
	}

	return s.Auth.Register(username, password)
}

func (s *server) Partite() PartiteHandler {
	return s.partiteHandler
}