package v1

import (
	"context"

	"gitea.badhouseplants.net/softplayer/softplayer-backend/internal/controllers"
	"gitea.badhouseplants.net/softplayer/softplayer-backend/internal/tools/logger"
	accounts "gitea.badhouseplants.net/softplayer/softplayer-go-proto/pkg/accounts/v1"
	"github.com/golang/protobuf/ptypes/empty"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/grpc/status"
	"google.golang.org/protobuf/types/known/emptypb"
)

func NewAccountAuthRPCImpl(ctrl *controllers.AccountController) *AccountsAuthServer {
	return &AccountsAuthServer{
		ctrl: ctrl,
	}
}

type AccountsAuthServer struct {
	accounts.UnimplementedAccountsAuthServiceServer
	ctrl *controllers.AccountController
}

func (a *AccountsAuthServer) RefreshToken(ctx context.Context, in *empty.Empty) (*empty.Empty, error) {
	tokenID := ctx.Value("token_id").(string)
	userID := ctx.Value("user_id").(string)
	log := logger.FromContext(ctx)
	uuid, err := a.ctrl.ValidateRefreshToken(ctx, tokenID, userID)
	if err != nil {
		return nil, status.Error(codes.Unauthenticated, "refresh token is invalid")
	}
	accessToken, err := a.ctrl.GenerateAccessToken(uuid)
	if err != nil {
		log.Error(err, "Couldn't generate an access token")
		return nil, status.Error(codes.Aborted, "Couldn't generate Access Token")
	}

	refreshToken, err := a.ctrl.GenerateRefreshToken(ctx, uuid)
	if err != nil {
		log.Error(err, "Couldn't generate a refresh token")
		return nil, status.Error(codes.Aborted, "Couldn't generate Access Token")
	}

	header := metadata.Pairs(
		"access-token", accessToken,
		"refreshToken", refreshToken,
	)

	if err := grpc.SetHeader(ctx, header); err != nil {
		log.Error(err, "Couldn't set headers")
		return nil, status.Error(codes.Unknown, "Couldn't set headers")
	}

	return &emptypb.Empty{}, nil
}