package service

import (
	"context"
	"errors"

	"git.nmcnew.com/nmcnew/bracketeer/db"
	"golang.org/x/crypto/bcrypt"
)

var (
	ErrAuthFailed = errors.New("auth values don't match")
)

type AuthService interface {
	Login(ctx context.Context, username string, authValue string, authType string) (*db.User, error)
}
type authService struct {
	q *db.Queries
}

func NewAuthService(q *db.Queries) AuthService {
	return &authService{
		q: q,
	}
}

func (s *authService) Login(ctx context.Context, username, authValue, authType string) (*db.User, error) {
	dbValue, err := s.q.GetUserAuthValue(ctx, db.GetUserAuthValueParams{
		Name: username,
		Type: db.AuthTypeFromString(authType),
	})
	if err != nil {
		return nil, err
	}
	switch authType {
	case "password":
		err = bcrypt.CompareHashAndPassword([]byte(dbValue.AuthValue), []byte(authValue))
		if err != nil {
			return nil, ErrAuthFailed
		}
	default:
		if authValue != dbValue.AuthValue {
			return nil, ErrAuthFailed
		}
		user, err := s.q.GetUserFromId(ctx, dbValue.UserID)
		if err != nil {
			return nil, err
		}
		return &user, nil
	}

	return nil, ErrAuthFailed
}

func (s *authService) Register(ctx context.Context, username, email, bio, profileURL, authValue, authType string) (*db.User, error) {
	panic("unimplemented")
}