package service

import (
	"context"

	"github.com/cloudprint/cloudprint-backend/internal/repository"
	"github.com/cloudprint/cloudprint-backend/internal/service"
	pb "github.com/cloudprint/cloudprint-backend/proto/generated"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

type AdminServiceServer struct {
	pb.UnimplementedAdminServiceServer
	authService *service.AuthService
	orderRepo   *repository.OrderRepository
	printerRepo *repository.PrinterRepository
}

func NewAdminServiceServer(
	authService *service.AuthService,
	orderRepo *repository.OrderRepository,
	printerRepo *repository.PrinterRepository,
) *AdminServiceServer {
	return &AdminServiceServer{
		authService: authService,
		orderRepo:   orderRepo,
		printerRepo: printerRepo,
	}
}

func (s *AdminServiceServer) Login(ctx context.Context, req *pb.AdminLoginRequest) (*pb.AdminLoginResponse, error) {
	result, err := s.authService.AdminLogin(ctx, req.Username, req.Password)
	if err != nil {
		return nil, status.Errorf(codes.Unauthenticated, "login failed: %v", err)
	}

	return &pb.AdminLoginResponse{
		AccessToken: result.AccessToken,
		Admin: &pb.Admin{
			Id:       result.Admin.ID,
			Username: result.Admin.Username,
			Nickname: result.Admin.Nickname,
			Role:     int32(result.Admin.Role),
		},
	}, nil
}

func (s *AdminServiceServer) GetStatistics(ctx context.Context, req *pb.GetStatisticsRequest) (*pb.Statistics, error) {
	totalUsers, totalOrders, todayOrders, todayRevenue, pendingOrders, err := s.orderRepo.GetStatistics(ctx)
	if err != nil {
		return nil, status.Errorf(codes.Internal, "get statistics failed: %v", err)
	}

	activePrinters, err := s.printerRepo.CountActive(ctx)
	if err != nil {
		return nil, status.Errorf(codes.Internal, "get printer count failed: %v", err)
	}

	return &pb.Statistics{
		TotalUsers:     totalUsers,
		TotalOrders:    totalOrders,
		TodayOrders:    todayOrders,
		TodayRevenue:   todayRevenue,
		PendingOrders:  pendingOrders,
		ActivePrinters: int32(activePrinters),
	}, nil
}